Subsequent Events [Abstract] Subsequent Event [Table] Subsequent Event [Table] Credit Facility [Axis] Credit Facility [Axis] Credit Facility [Domain] Credit Facility [Domain] Committed Loan Repurchase Facility Committed Loan Repurchase Facility [Member] Committed Loan Repurchase Facility [Member] Name of Property [Axis] Name of Property [Axis] Name of Property [Domain] Name of Property [Domain] Wayne, New Jersey Wayne, New Jersey [Member] Wayne, New Jersey [Member] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Subsequent Event Subsequent Event [Member] Subsequent Event [Line Items] Subsequent Event [Line Items] Proceeds from lease Proceeds from Lease Payments Real estate and related lease intangibles, net Real Estate Investment Property, Net Less: Accumulated depreciation and amortization Real Estate Investment Property, Accumulated Depreciation Mortgage Loan Related to Property Sales Mortgage Loan Related to Property Sales Gain (loss) on extinguishment/defeasance of debt Gain (Loss) on Extinguishment of Debt Number of committed loan repurchase facilities executed Number of Committed Loan Repurchase Facilities Executed Number of Committed Loan Repurchase Facilities Executed Number of additional extension periods Number of Additional Extension Periods Number of Additional Extension Periods Line of credit facility, period of additional extensions of maturity Line of Credit Facility, Period of Additional Extensions of Maturity Line of Credit Facility, Period of Additional Extensions of Maturity Debt Disclosure [Abstract] Schedule of repurchase agreement Schedule of Repurchase Agreements [Table Text Block] Schedule of contractual payments under all borrowings by maturity Schedule of Maturities of Long-term Debt [Table Text Block] Noncontrolling Interest [Abstract] NONCONTROLLING INTERESTS Noncontrolling Interest Disclosure [Text Block] DEBT OBLIGATIONS, NET Debt Disclosure [Text Block] Earnings Per Share [Abstract] Schedule of Earnings Per Share, Basic, by Common Class, Including Two Class Method [Table] Schedule of Earnings Per Share, Basic, by Common Class, Including Two Class Method [Table] Class of Stock [Axis] Class of Stock [Axis] Class of Stock [Domain] Class of Stock [Domain] Class A Common Stock Common Class A [Member] Earnings Per Share Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] Basic Net Income (Loss) Per Share of Class A Common Stock Earnings Per Share, Basic [Abstract] Numerator: Net Income (Loss) Available to Common Stockholders, Basic [Abstract] Net income (loss) attributable to Class A common shareholders Net Income (Loss) Available to Common Stockholders, Basic Denominator: Weighted Average Number of Shares Outstanding, Basic [Abstract] Weighted average number of shares of Class A common stock outstanding (in shares) Weighted Average Number of Shares Outstanding, Basic Basic (in dollars per share) Earnings Per Share, Basic Diluted Net Income (Loss) Per Share of Class A Common Stock Earnings Per Share, Diluted [Abstract] Numerator: Net Income (Loss) Available to Common Stockholders, Diluted [Abstract] Amounts attributable to operating partnership’s share of Ladder Capital Corp net income (loss) Adjustment for Noncontrolling Interest in Net Income (Loss) Operating Partnerships Nonredeemable Represents the adjustment for income (loss) attributable to the nonredeemable noncontrolling partner in an operating partnership due to its potentially dilutive effect. Additional corporate tax (expense) benefit Adjustment for Income Tax Expense (Benefit) Represents the adjustment for corporate income tax pertaining to the potentially dilutive effect of the income (loss) added back. Diluted Net income (loss) available for Class A common shareholders Net Income (Loss) Available to Common Stockholders, Diluted Denominator: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Shares issuable relating to converted Class B common shareholders (in shares) Incremental Common Shares Attributable to Conversion of Common Stock Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of conversion of common stock from one class to another class. Incremental shares of unvested Class A restricted stock (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements Diluted weighted average number of shares of Class A common stock outstanding (in shares) Weighted Average Number of Shares Outstanding, Diluted Diluted (in dollars per share) Earnings Per Share, Diluted SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Abstract] SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate Schedule [Table] SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate Schedule [Table] SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Loan Type [Axis] SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Loan Type [Axis] SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Loan Type [Domain] SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Loan Type [Domain] Mortgage loans held by consolidated subsidiaries Mortgage Loans Held By Consolidated Subsidiaries [Member] Mortgage Loans Held By Consolidated Subsidiaries [Member] First mortgage loans First Mortgage Held-for-Investment [Member] Loan secured by real property that has a first (highest) lien on such property in the event of default by the borrower and is held by the entity for investment. Mezzanine loans Mezzanine Loan [Member] A mortgage loan secured by the equity of a company owning real property. Mortgage loan receivables held for investment, net, at amortized cost Mortgage Loan Receivables Held-for-Investment [Member] Represents the mortgage loans receivable held for investment at amortized cost. First mortgage loans First Mortgage Held-for-sale [Member] Loan secured by real property that has a first (highest) lien on such property in the event of default by the borrower and is held for sale by the entity. Mortgage loan receivables held for sale Mortgage Loan Receivables Held-for-sale [Member] Represents the mortgage loans receivable held for sale. SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items] SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items] Realized gain on sale of mortgage loan receivables SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Foreclosure Mortgage loans held by consolidated subsidiaries, beginning balance SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate Origination of mortgage loan receivables SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, New Mortgage Loan Purchases of mortgage loan receivables Mortgage Loans on Real Estate, Purchases of Mortgage Loans Mortgage Loans on Real Estate, Purchases of Mortgage Loans Proceeds from sales of mortgage loan receivables(3) SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Collections of Principal Sale of loans, net Gain (Loss) on Sales of Loans, Net Transfer between held for investment and held for sale Transfer To (From) Loans Held-for-sale to Portfolio Loans Transfer To (From) Loans Held-for-sale to Portfolio Loans Accretion/amortization of discount, premium and other fees Mortgage Loans on Real Estate Accretion Amortization of Discounts Premiums and Other Fees on Mortgage Loans Represents the amount of accretion/ amortization of discount, premium and other fees on mortgage loans on real estate accreted/ amortized during the reporting period. Provision for loan and lease losses Provision for Loan and Lease Losses Mortgage loans held by consolidated subsidiaries, ending balance Outstanding Face Amount Mortgage Loans On Real Estate Face Amount Of Mortgages Balance Sheet Date Amount of the contractual principal due as of the balance sheet date of the mortgage loan (face amount). Provision for loan losses Loans and Leases Receivable, Allowance Carrying value Loans Receivable, Gross, Commercial, Real Estate Provision for loan losses Allowance for Loan and Lease Losses, Real Estate Carrying Value Mortgage Loans on Real Estate, Commercial and Consumer, Net Loans held for sale transferred to loans held for investments, fair value Loans Held-for-sale Transferred to Portfolio Loans, Fair Value Loans Held-for-sale Transferred to Portfolio Loans, Fair Value Loans from held for sale transferred to portfolio loans, remaining maturity Loans From Held For Sale Transferred To Portfolio Loans, Remaining Maturity Loans From Held For Sale Transferred To Portfolio Loans, Remaining Maturity Investments, Debt and Equity Securities [Abstract] REAL ESTATE SECURITIES Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] Unrealized gain (loss) on equity securities Equity Securities, FV-NI, Realized Gain (Loss) Other than temporary impairment losses included in consolidated statements of income Other-than-temporary Impairment Loss, Debt Securities, Portion Recognized in Earnings Segment Reporting [Abstract] SEGMENT REPORTING Segment Reporting Disclosure [Text Block] Income Tax Disclosure [Abstract] Income Tax Expense (Benefit), Continuing Operations [Abstract] Income Tax Expense (Benefit), Continuing Operations [Abstract] Current Income Tax Expense (Benefit), Continuing Operations [Abstract] Current Income Tax Expense (Benefit), Continuing Operations [Abstract] U.S. Federal Current Federal Tax Expense (Benefit) State and local Current State and Local Tax Expense (Benefit) Total current expense (benefit) Current Income Tax Expense (Benefit) Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract] Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract] U.S. Federal Deferred Federal Income Tax Expense (Benefit) State and local Deferred State and Local Income Tax Expense (Benefit) Total deferred expense (benefit) Deferred Income Tax Expense (Benefit) Provision for income tax expense (benefit) Income Tax Expense (Benefit) Equity [Abstract] Schedule of Stock by Class [Table] Schedule of Stock by Class [Table] Tax Period [Axis] Tax Period [Axis] Tax Period [Domain] Tax Period [Domain] Tax Year 2018 Tax Year 2018 [Member] Tax Year 2017 Tax Year 2017 [Member] Tax Year 2016 Tax Year 2016 [Member] Class A common stock, par value $0.001 per share, 600,000,000 shares authorized; 106,642,335 and 96,258,847 shares issued and 103,941,173 and 93,641,260 shares outstanding Class B Common Stock Common Class B [Member] Series REIT LP Units Series REIT LP Units [Member] Series REIT LP Units [Member] Class of Stock [Line Items] Class of Stock [Line Items] Common Stock, Dividends, Per Share, Cash Paid Common Stock, Dividends, Per Share, Cash Paid Dividends per share of Class A common stock (in dollars per share) Common Stock, Dividends, Per Share, Declared Ordinary Dividends, Per Share, Common Stock Ordinary Dividends, Per Share, Common Stock Ordinary Dividends, Per Share, Common Stock Ordinary Dividends Treated as Qualified Dividends, Per Share, Common Stock Ordinary Dividends Treated as Qualified Dividends, Per Share, Common Stock Ordinary Dividends Treated as Qualified Dividends, Per Share, Common Stock Ordinary Dividends Treated as Capital Gain Per Share Common Stock Ordinary Dividends Treated as Capital Gain Per Share Common Stock Ordinary Dividends Treated as Capital Gain Per Share Common Stock Ordinary Dividends Treated as Capital Gain Unrecaptured 1250Gain Per Share Common Stock Ordinary Dividends Treated as Capital Gain Unrecaptured 1250Gain Per Share Common Stock Ordinary Dividends Treated as Capital Gain Unrecaptured 1250Gain Per Share Common Stock Equity Method Investments and Joint Ventures [Abstract] Schedule of Equity Method Investments [Table] Schedule of Equity Method Investments [Table] Investment, Name [Axis] Investment, Name [Axis] Investment, Name [Domain] Investment, Name [Domain] Grace Lake JV, LLC Grace Lake JV, LLC [Member] Represents information pertaining to Grace Lake JV, LLC. 24 Second Avenue Holdings LLC 24 Second Avenue Holdings LLC [Member] 24 Second Avenue Holdings LLC [Member] Schedule of Equity Method Investments [Line Items] Schedule of Equity Method Investments [Line Items] Investment in unconsolidated joint ventures Equity Method Investments SUBSEQUENT EVENTS Subsequent Events [Text Block] Share Repurchase Program [Axis] Share Repurchase Program [Axis] Share Repurchase Program [Domain] Share Repurchase Program [Domain] 2014 Share Repurchase Authorization Program 2014 Share Repurchase Authorization Program [Member] 2014 Share Repurchase Authorization Program Purchase of treasury stock (in shares) Treasury Stock, Shares, Acquired Treasury Stock [Roll Forward] Treasury Stock [Roll Forward] Treasury Stock [Roll Forward] Remaining amount available for repurchase Stock Repurchase Program, Remaining Authorized Repurchase Amount Additional authorizations Stock Repurchase Program, Authorized Amount Repurchases paid Treasury Stock, Value, Acquired, Cost Method Repurchases unsettled Treasury Stock, Value, Not Settled, Cost Method Treasury Stock, Value, Not Settled, Cost Method Remaining amount available for repurchase Real Estate [Abstract] Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Above Market Leases Above Market Leases [Member] Business Acquisition [Line Items] Business Acquisition [Line Items] Gross intangible assets Finite-Lived Intangible Assets, Gross Accumulated amortization Finite-Lived Intangible Assets, Accumulated Amortization Net intangible assets Finite-Lived Intangible Assets, Net Unamortized favorable/unfavorable lease intangibles Favorable (Unfavorable) Lease Intangibles Represents the amount of favorable or unfavorable lease intangibles as of the balance sheet date. Decrease in operating lease income, amortization of above market lease intangibles acquired Amortization of Intangible Assets Increase in operating lease income, amortization of below market lease intangibles acquired Amortization of Below Market Lease Unbilled rent receivables Unbilled Rent Receivables Represents the amount of unbilled rent receivables. Unencumbered real estates Real Estates, Unencumbered Real Estates, Unencumbered Weighted average amortization period for intangible assets acquired Acquired Finite-lived Intangible Assets, Weighted Average Useful Life Revenues from acquisitions Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual Net earnings (loss) Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual Income Tax Contingency [Table] Income Tax Contingency [Table] Income Tax Authority [Axis] Income Tax Authority [Axis] Income Tax Authority [Domain] Income Tax Authority [Domain] Income Tax Authority, Name [Axis] Income Tax Authority, Name [Axis] Income Tax Authority, Name [Domain] Income Tax Authority, Name [Domain] Income Tax Contingency [Line Items] Income Tax Contingency [Line Items] US statutory tax rate Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent REIT income not subject to corporate income tax Effective Income Tax Rate Reconciliation, Tax Exempt Income, Percent Increase due to state and local taxes Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent Change in valuation allowance Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Percent Impact of Tax Cuts and Jobs Act Effective Income Tax Rate Reconciliation, Tax Cuts And Jobs Act Of 2017, Percent Effective Income Tax Rate Reconciliation, Tax Cuts And Jobs Act Of 2017, Percent Other Effective Income Tax Rate Reconciliation, Other Adjustments, Percent Effective income tax rate Effective Income Tax Rate Reconciliation, Percent Effective Income Tax Rate Reconciliation, Tax Settlement, State and Local, Amount Effective Income Tax Rate Reconciliation, Tax Settlement, State and Local, Amount Fees And Other Income Fees And Other Income Fees and Other Income Carrying Value Mortgage Loans on Real Estate, Gross, Commercial and Consumer, Net Mortgage Loans on Real Estate, Gross, Commercial and Consumer, Net Carrying Value Weighted Average Yield SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Interest Rate Remaining Maturity (years) Mortgage Loans on Real Estate Remaining Maturity Represents the remaining maturity period of mortgage loans. Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Securities Financing Transaction [Axis] Securities Financing Transaction [Axis] Securities Financing Transaction [Domain] Securities Financing Transaction [Domain] Senior Unsecured Notes Senior Unsecured Notes [Member] Senior Unsecured Notes CLO debt Collateralized Debt Obligations [Member] Mortgage Loan Financing Mortgage Loan Receivable Financing [Member] Mortgage Loan Receivable Financing Debt Instrument [Line Items] Debt Instrument [Line Items] Long-term Debt, Fiscal Year Maturity [Abstract] Long-term Debt, Fiscal Year Maturity [Abstract] 2018 (Last 3 months) Long-term Debt, Maturities, Repayments of Principal, Remainder of Fiscal Year 2019 Long-term Debt, Maturities, Repayments of Principal in Year Two 2020 Long-term Debt, Maturities, Repayments of Principal in Year Three 2021 Long-term Debt, Maturities, Repayments of Principal in Year Four 2022 Long-term Debt, Maturities, Repayments of Principal in Year Five Thereafter Long-term Debt, Maturities, Repayments of Principal after Year Five Subtotal Debt and Capital Lease Obligations Debt issuance costs Debt Issuance Costs, Net Premiums included in mortgage loan financing Debt Instrument, Unamortized Premium Debt obligations Debt Obligations Debt Obligations Length of extension options Debt Instrument Length of Period of Extension Options Represents the length of period of the extension options. SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation Disclosure [Abstract] SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, by Property [Table] SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, by Property [Table] Geographical [Axis] Geographical [Axis] Geographical [Domain] Geographical [Domain] Pelican Rapids, MN Pelican Rapids, MN [Member] Pelican Rapids, MN [Member] Carthage, MO Carthage, MO [Member] Carthage, MO [Member] Bolivar, MO Bolivar, MO [Member] Bolivar, MO [Member] Pinconning, MI Pinconning, MI [Member] Pinconning, MI [Member] New Hampton, IA New Hampton, IA [Member] New Hampton, IA [Member] Ogden, IA Ogden, IA [Member] Ogden, IA [Member] Wonder Lake, IL Wonder Lake, IL [Member] Wonder Lake, IL [Member] Moscow Mills, MO Moscow Mills, MO [Member] Moscow Mills, MO [Member] Foley, MN Foley, MN [Member] Foley, MN [Member] Kirbyville, MO Kirbyville, MO [Member] Kirbyville, MO [Member] Gladwin, MI Gladwin, MI [Member] Gladwin, MI [Member] Rockford, MN Rockford, Minnesota [Member] Rockford, Minnesota [Member] Winterset, IA Winterset, Iowa [Member] Winterset, Iowa [Member] Kawkawlin, MI Kawkawlin, Michigan [Member] Kawkawlin, Michigan [Member] Aroma Park, IL Aroma Park, Illinois [Member] Aroma Park, Illinois [Member] East Peoria, IL East Peoria, Illinois [Member] East Peoria, Illinois [Member] Milford, IA Milford, Iowa [Member] Milford, Iowa [Member] Jefferson City, MO Jefferson City, Missouri [Member] Jefferson City, Missouri [Member] Denver, IA Denver, Iowa [Member] Denver, Iowa [Member] Port O'Connor, TX Port O'Connor, Texas [Member] Port O'Connor, Texas [Member] Wabasha, MN Wabasha, Minnesota [Member] Wabasha, Minnesota [Member] Jacksonville, FL Jacksonville, Florida [Member] Jacksonville, Florida [Member] Shelbyville, IL Shelbyville, Illinois [Member] Shelbyville, Illinois [Member] Jessup, IA Jesup, Iowa [Member] Jesup, Iowa [Member] Hanna City, IL Hanna City, Illinois [Member] Hanna City, Illinois [Member] Ridgedale, MO Ridgedale, Missouri [Member] Ridgedale, Missouri [Member] Peoria, IL Peoria, Illinois [Member] Peoria, Illinois [Member] Carmi, IL Carmi, Illinois [Member] Carmi, Illinois Springfield, IL Springfield, Illinois [Member] Springfield, Illinois Fayetteville, NC Fayetteville, North Carolina [Member] Fayetteville, North Carolina Retail Property in Dryden Township, MI Dryden, Michigan [Member] Dryden, Michigan Lamar, MO Lamar, Missouri [Member] Lamar, Missouri Union, MO Union, Missouri [Member] Union, Missouri Pawnee, IL Pawnee, Illinois [Member] Pawnee, Illinois Linn, MO Linn, Missouri [Member] Linn, Missouri Cape Girardeau, MO Cape Girardeau, Missouri [Member] Cape Girardeau, Missouri Retail Property in Decatur-Pershing, IL Decatur, Illinois One [Member] Decatur, Illinois One Rantoul, IL Rantoul, Illinois [Member] Rantoul, Illinois Flora Vista, NM Flora Vista, New Mexico [Member] Flora Vista, New Mexico Mountain Grove, MO Mountain Grove, Missouri [Member] Mountain Grove, Missouri Retail Property in Decatur-Sunnyside, IL Decatur, Illinois Two [Member] Decatur, Illinois Two Champaign, IL Champaign, Illinois [Member] Champaign, Illinois Retail Property in San Antonio, TX San Antonio, Texas [Member] San Antonio, Texas Retail Property in Borger, TX Borger, Texas [Member] Borger, Texas Retail Property in Dimmitt, TX Dimmitt, Texas [Member] Dimmitt, Texas St. Charles, Minnesota St. Charles, Minnesota [Member] St. Charles, Minnesota Philo, Illinois Philo, Illinois [Member] Philo, Illinois Radford, Virginia Radford, Virginia [Member] Radford, Virginia [Member] Rural Retreat, Virginia Rural Retreat, Virginia [Member] Rural Retreat, Virginia [Member] Albion, Pennsylvania Albion, Pennsylvania [Member] Albion, Pennsylvania [Member] Mount Vernon, Alabama Mount Vernon, Alabama [Member] Mount Vernon, Alabama [Member] Malone, New York Malone, New York [Member] Malone, New York [Member] Mercedes, Texas Mercedes, Texas [Member] Mercedes, Texas [Member] Gordonville, Missouri Gordonville, Missouri [Member] Gordonville, Missouri [Member] Rice, Minnesota Rice, Minnesota [Member] Rice, Minnesota [Member] Bixby, Oklahoma Bixby, Oklahoma [Member] Bixby, Oklahoma [Member] Farmington, Illinois Farmington, Illinois [Member] Farmington, Illinois [Member] Grove, Oklahoma Grove, Oklahoma [Member] Grove, Oklahoma [Member] Jenks, Oklahoma Jenks, Oklahoma [Member] Jenks, Oklahoma [Member] Bloomington, Illinois Bloomington, Illinois [Member] Bloomington, Illinois [Member] Montrose, Minnesota Montrose, Minnesota [Member] Montrose, Minnesota [Member] Lincoln County, Missouri Lincoln County, Missouri [Member] Lincoln County, Missouri [Member] Wilmington, Illinois Wilmington, Illinois [Member] Wilmington, Illinois [Member] Danville, Illinois Danville, Illinois [Member] Danville, Illinois [Member] Moultrie, Georgia Moultrie, Georgia [Member] Moultrie, Georgia [Member] Rose Hill, North Carolina Rose Hill, North Carolina [Member] Rose Hill, North Carolina [Member] Rockingham, North Carolina Rockingham, North Carolina [Member] Rockingham, North Carolina [Member] Biscoe, North Carolina Biscoe, North Carolina [Member] Biscoe, North Carolina [Member] DeSotaIowaMember DeSotaIowaMember [Member] DeSotaIowaMember [Member] Kerrville, Texas Kerrville, Texas [Member] Kerrville, Texas [Member] Floresville, Texas Floresville, Texas [Member] Floresville, Texas [Member] Minot, North Dakota Minot, North Dakota [Member] Minot, North Dakota [Member] Lebanon, Michigan Lebanon, Michigan [Member] Lebanon, Michigan [Member] Effingham County, Illinois Effingham County, Illinois [Member] Effingham County, Illinois [Member] Ponce, Puerto Rico Ponce, Puerto Rico [Member] Ponce, Puerto Rico [Member] Tremont, Illinois Tremont, Illinois [Member] Tremont, Illinois [Member] Pleasanton, Texas Pleasanton, Texas [Member] Pleasanton, Texas [Member] Peoria, Illinois, 2 Peoria, Illinois, 2 [Member] Peoria, Illinois, 2 [Member] Bridgeport, Illinois Bridgeport, Illinois [Member] Bridgeport, Illinois [Member] Warren, Minnesota Warren, Minnesota [Member] Warren, Minnesota [Member] Canyon Lake, Texas Canyon Lake, Texas [Member] Canyon Lake, Texas [Member] Wheeler, Texas Wheeler, Texas [Member] Wheeler, Texas [Member] Aurora, Minnesota Aurora, Minnesota [Member] Aurora, Minnesota [Member] Red Oak, Iowa Red Oak, Iowa [Member] Red Oak, Iowa [Member] Zapata, Texas Zapata, Texas [Member] Zapata, Texas [Member] St. Francis, Minnesota St. Francis, Minnesota [Member] St. Francis, Minnesota [Member] Yorktown, Texas Yorktown, Texas [Member] Yorktown, Texas [Member] Battle Lake, Minnesota Battle Lake, Minnesota [Member] Battle Lake, Minnesota [Member] Paynesville, Minnesota Paynesville, Minnesota [Member] Paynesville, Minnesota [Member] Wheaton, Missouri Wheaton, Missouri [Member] Wheaton, Missouri [Member] Rotterdam, New York Rotterdam, New York [Member] Rotterdam, New York [Member] Hilliard, Ohio Hilliard, Ohio [Member] Hilliard, Ohio [Member] Niles, Ohio Niles, Ohio [Member] Niles, Ohio [Member] Youngstown, Ohio Youngstown, Ohio [Member] Youngstown, Ohio [Member] Kings Mountain, North Carolina Kings Mountain, North Carolina [Member] Kings Mountain, North Carolina [Member] Iberia, Missouri Iberia, Missouri [Member] Iberia, Missouri [Member] Pine Island, Minnesota Pine Island, Minnesota [Member] Pine Island, Minnesota [Member] Isle, Minnesota Isle, Minnesota [Member] Isle, Minnesota [Member] Jacksonville, North Carolina Jacksonville, North Carolina [Member] Jacksonville, North Carolina [Member] Evansville, Indiana Evansville, Indiana [Member] Evansville, Indiana [Member] Woodland Park, Colorado Woodland Park, Colorado [Member] Woodland Park, Colorado [Member] Bellport, New York Bellport, New York [Member] Bellport, New York [Member] Ankeny, Iowa Ankeny, Iowa [Member] Ankeny, Iowa [Member] Springfield, Missouri Springfield, Missouri [Member] Springfield, Missouri [Member] Cedar Rapids, Iowa Cedar Rapids, Iowa [Member] Cedar Rapids, Iowa [Member] Fairfield, Iowa Fairfield, Iowa [Member] Fairfield, Iowa [Member] Owatonna, Minnesota Owatonna, Minnesota [Member] Owatonna, Minnesota [Member] Muscatine, Iowa Muscatine, Iowa [Member] Muscatine, Iowa [Member] Sheldon, Iowa Sheldon, Iowa [Member] Sheldon, Iowa [Member] Memphis, Tennessee Memphis, Tennessee [Member] Memphis, Tennessee [Member] Bennett, Colorado Bennett, Colorado [Member] Bennett, Colorado [Member] Conyers, Georgia Conyers, Georgia [Member] Conyers, Georgia [Member] O'Fallon, Illinois O'Fallon, Illinois [Member] O'Fallon, Illinois [Member] El Centro, California El Centro, California [Member] El Centro, California [Member] Durant, Oklahoma Durant, Oklahoma [Member] Durant, Oklahoma [Member] Gallatin, Tennessee Gallatin, Tennessee [Member] Gallatin, Tennessee [Member] Mt. Airy, North Carolina Mt. Airy, North Carolina [Member] Mt. Airy, North Carolina [Member] Aiken, South Carolina Aiken, South Carolina [Member] Aiken, South Carolina [Member] Johnson City, Tennessee Johnson City, Tennessee [Member] Johnson City, Tennessee [Member] Palmview, Texas Palmview, Texas [Member] Palmview, Texas [Member] Ooltewah, Tennessee Ooltewah, Tennessee [Member] Ooltewah, Tennessee [Member] Abingdon, Virginia Abingdon, Virginia [Member] Abingdon, Virginia [Member] Wichita, Kansas Wichita, Kansas [Member] Wichita, Kansas [Member] North Dartsmouth, Massachusetts North Dartsmouth, Massachusetts [Member] North Dartsmouth, Massachusetts [Member] Vineland, New Jersey Vineland, New Jersey [Member] Vineland, New Jersey [Member] Saratoga Springs, New York Saratoga Springs, New York [Member] Saratoga Springs, New York [Member] Waldorf, Maryland Waldorf, Maryland [Member] Waldorf, Maryland [Member] Mooresville, North Carolina Mooresville, North Carolina [Member] Mooresville, North Carolina [Member] Sennett, New York Sennett, New York [Member] Sennett, New York [Member] DeLeon Springs, Florida DeLeon Springs, Florida [Member] DeLeon Springs, Florida [Member] Orange City, Florida Orange City, Florida [Member] Orange City, Florida [Member] Satsuma, Florida Satsuma, Florida [Member] Satsuma, Florida [Member] Greenwood, Arkansas Greenwood, Arkansas [Member] Greenwood, Arkansas [Member] Snellville, Georgia Snellville, Georgia [Member] Snellville, Georgia [Member] Columbia, South Carolina Columbia, South Carolina [Member] Columbia, South Carolina [Member] Millbrook, Alabama Millbrook, Alabama [Member] Millbrook, Alabama [Member] Pittsfield, Massachusetts Pittsfield, Massachusetts [Member] Pittsfield, Massachusetts [Member] Spartanburg, South Carolina Spartanburg, South Carolina [Member] Spartanburg, South Carolina [Member] Tupelo, Mississippi Tupelo, Mississippi [Member] Tupelo, Mississippi [Member] Lilburn, Georgia Lilburn, Georgia [Member] Lilburn, Georgia [Member] Douglasville, Georgia Douglasville, Georgia [Member] Douglasville, Georgia [Member] Elkton, Maryland Elkton, Maryland [Member] Elkton, Maryland [Member] Lexington, South Carolina Lexington, South Carolina [Member] Lexington, South Carolina [Member] Isla Vista, California Isla Vista, California [Member] Isla Vista, California [Member] Lithia Springs, Georgia Lithia Springs, Georgia [Member] Lithia Springs, Georgia [Member] Crum Lynne, PA Crum Laynne, Pennsylvania [Member] Crum Laynne, Pennsylvania [Member] Miami, Florida, 2 Miami, Florida, 2 [Member] Miami, Florida, 2 [Member] Office in Peoria IL Peoria, IL 3 [Member] Peoria, IL 3 [Member] Carmel, New York Carmel, New York [Member] Carmel, New York [Member] Wayne, New Jersey 2 WayneNewJerseyMemberTwo [Member] WayneNewJerseyMemberTwo [Member] Grand Rapids, Michigan, Two Grand Rapids, Michigan, Two [Member] Grand Rapids, Michigan, Two Grand Rapids, Michigan, One Grand Rapids, Michigan, One [Member] Grand Rapids, Michigan, One Richmond, VA Richmond, Virginia [Member] Richmond, Virginia [Member] Richmond, Virginia 2 Richmond, Virginia 2 [Member] Richmond, Virginia 2 [Member] Oakland County, Michigan Oakland County, Michigan [Member] Oakland County, Michigan [Member] Miami, FL Miami, Florida [Member] Miami, Florida [Member] Las Vegas, Nevada Las Vegas, Nevada [Member] Las Vegas, Nevada [Member] Real Estate, Type of Property [Axis] Real Estate, Type of Property [Axis] Real Estate [Domain] Real Estate [Domain] Retail Site Retail Site [Member] Office building Office Building [Member] Shopping Center Shopping Center [Member] Shopping Center [Member] Warehouse Warehouse [Member] Multi-family Multifamily [Member] Other Other Property [Member] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Minimum Minimum [Member] Maximum Maximum [Member] SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items] SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items] Encumbrances SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Amount of Encumbrances Initial Cost to Company SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract] Land SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land Building SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements Intangibles SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Intangibles SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Intangibles Costs Capitalized Subsequent to Acquisition SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Cost Capitalized Subsequent to Acquisition, Improvements Land SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Land, Amount Building SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Building and Improvements, Amount Intangibles SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Intangibles SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Intangibles Total SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Gross Accumulated Depreciation and Amortization SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation Life on which Depreciation in Latest Statement of Income is Computed SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Life Used for Depreciation Tax Basis SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Federal Income Tax Basis Offsetting [Abstract] Offsetting of derivative assets Offsetting Derivative Assets [Abstract] Gross amounts of recognized assets Derivative Asset, Fair Value, Gross Asset Gross amounts offset in the balance sheet Derivative Asset, Fair Value, Gross Liability Net amounts of assets presented in the balance sheet Derivative Asset Gross amounts not offset in the balance sheet Derivative Asset, Fair Value, Amount Not Offset Against Collateral [Abstract] Financial instruments Derivative Collateral Obligation to Return Financial Instruments Amount of obligation to return financial instruments collateral under master netting arrangements that have not been offset against derivative assets. Cash collateral received/(posted) Derivative, Collateral, Obligation to Return Cash Net amount Derivative Asset, Fair Value, Amount Offset Against Collateral Fair Value Disclosures [Abstract] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Beginning balance Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value Transfer from level 2 Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3 Purchases Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases Sales Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales Paydowns/maturities Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements Amortization of premium/discount Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Amortization of Premium or Discount Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Amortization of Premium or Discount Unrealized gain/(loss) Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Other Comprehensive Income (Loss) Realized gain/(loss) on sale Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings Ending balance Income Statement [Abstract] Statement [Table] Statement [Table] Statement Statement [Line Items] Net interest income Interest Income (Expense), Net [Abstract] Interest income Interest and Dividend Income, Operating Interest expense Interest Expense Net interest income Interest Income (Expense), Net Provision for loan losses Provision for Loan Losses Expensed Net interest income after provision for loan losses Interest Income (Expense), after Provision for Loan Loss Other income Noninterest Income [Abstract] Operating lease income Operating Leases, Income Statement, Lease Revenue Tenant recoveries Tenant Recoveries Tenant Recoveries Sale of loans, net Realized gain (loss) on securities Debt and Equity Securities, Realized Gain (Loss) Unrealized gain (loss) on equity securities Equity Securities, FV-NI, Unrealized Gain (Loss) Unrealized gain (loss) on Agency interest-only securities Debt and Equity Securities, Unrealized Gain (Loss) Realized gain on sale of real estate, net Gain (Loss) on Sale of Properties Fee and other income Interest and Fee Income, Loans and Leases Net result from derivative transactions Gain (Loss) on Derivative Instruments, Net, Pretax Earnings (loss) from investment in unconsolidated joint ventures Income (Loss) from Equity Method Investments Total other income Nonoperating Income (Expense) Costs and expenses Costs and Expenses [Abstract] Salaries and employee benefits Labor and Related Expense Operating expenses Operating Expenses Real estate operating expenses Real Estate Operating Expenses Represents the amount of operating expenses related to real estate investments incurred during the period. Fee expense Fee Expenses Represents the amount of expense in the period for fees paid related to purchases of real estate and referral fees for origination of loans. Depreciation and amortization Depreciation, Depletion and Amortization Total costs and expenses Costs and Expenses Income (loss) before taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Income tax expense (benefit) Net income (loss) Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Net (income) loss attributable to noncontrolling interest in consolidated joint ventures Noncontrolling Interest in Net Income (Loss) Joint Venture Partners, Nonredeemable Net (income) loss attributable to noncontrolling interest in operating partnership Noncontrolling Interest in Net Income (Loss) Operating Partnerships, Nonredeemable Net income (loss) attributable to Class A common shareholders Earnings per share: Weighted average shares outstanding: Basic (in shares) Diluted (in shares) Summary of fair value Fair Value, by Balance Sheet Grouping [Table Text Block] Summary of financial assets and liabilities, both reported at fair value on a recurring basis or amortized cost/par Schedule of Fair Value Assets and Liabilities Measured on Recurring or Amortized Cost Basis [Table Text Block] Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis or on an amortized cost basis.. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). Schedule of changes in Level 3 of financial instruments Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] Schedule of quantitative information Fair Value Measurement Inputs and Valuation Techniques [Table Text Block] Schedule of Real Estate Properties [Table] Schedule of Real Estate Properties [Table] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Domain] Property, Plant and Equipment, Type [Domain] Land Land [Member] Building Building [Member] In-place leases and other intangibles In Place Leases and other Intangibles [Member] Represents information pertaining to in-place leases and other intangibles. Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Real estate and related lease intangibles, net Real Estate Investment Property, Net [Abstract] Real estate Real Estate Investment Property, at Cost Less: Accumulated depreciation and amortization Real estate and related lease intangibles, net Below market lease intangibles, net (other liabilities) Below Market Lease, Net Quarterly Financial Information Disclosure [Abstract] Quarterly Financial Information Quarterly Financial Information [Text Block] Disclosure of Compensation Related Costs, Share-based Payments [Abstract] Stock based compensation plans summary Schedule of Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan [Table Text Block] Summary of the grants Schedule of Share Based Compensation Arrangement by Share Based Payment Award Other than Options Grants in Period and Amortization to Compensation Expense [Table Text Block] Tabular disclosure of grants during the period and amortization to compensation expense for the grants for non-vested equity-based payment instruments, excluding stock (or unit) options that validly exist and are outstanding as of the balance sheet date. Schedule of nonvested shares activity Schedule of Nonvested Share Activity [Table Text Block] Schedule of the Company's net income and weighted average shares outstanding Schedule of Net Income and Weighted Average Shares Outstanding [Table Text Block] Tabular disclosure of information pertaining to net income and weighted average shares outstanding. Schedule of calculation of basic and diluted net income per share amounts Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Ownership [Axis] Ownership [Axis] Ownership [Domain] Ownership [Domain] LCFH Ladder Capital Finance Holdings LLLP [Member] Represents information concerning Ladder Capital Finance Holdings LLLP. Receivable Type [Axis] Receivable Type [Axis] Receivable [Domain] Receivable [Domain] B Participation Interest B Participation Interest [Member] B Participation Interest Scenario [Axis] Scenario [Axis] Scenario, Unspecified [Domain] Scenario, Unspecified [Domain] Scenario, Forecast Scenario, Forecast [Member] Related Party [Axis] Related Party [Axis] Related Party [Domain] Related Party [Domain] Affiliated Entity Affiliated Entity [Member] LCFC Ladder Capital Financial Corporation [Member] Ladder Capital Financial Corporation Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Mortgage loan financing Mortgages [Member] Borrowings from the Federal Home Loan Bank Federal Home Loan Bank Advances [Member] Senior Unsecured Notes Unsecured Debt [Member] Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Credit Agreement and Revolving Credit Facility Credit Agreement and Revolving Credit Facility [Member] Credit Agreement and Revolving Credit Facility [Member] Senior Notes Due, 2017 Senior Notes Due, 2017 [Member] Represents information pertaining to the senior notes due October 1, 2017. Securities or Other Assets Sold under Agreements to Repurchase, Maturity Periods [Axis] Repurchase Agreements and Similar Transactions, Maturity Periods [Axis] Repurchase Agreements and Similar Transactions, Maturity Periods [Domain] Repurchase Agreements and Similar Transactions, Maturity Periods [Domain] 2/29/2020 Maturing on 29 February 2020 [Member] Maturing on 29 February 2020 4/10/2018 Maturing 10 April 2018 [Member] Maturing 10 April 2018 [Member] 2/28/2022 Maturing on February 2022 [Member] Maturing on February 2022 10/1/2020 Maturing On 1 October 2020 [Member] Maturing On 1 October 2020 [Member] Various Date Maturing on Various Date [Member] Represents the group of securities or other assets sold under repurchase agreements which mature on various date. 4/7/2019 Maturing 7 April 2019 [Member] Maturing 7 April 2019 [Member] 5/6/2021 Maturing on 6 May 2021 [Member] Maturing on 6 May 2021 [Member] Committed Loan Repurchase Facility Committed Master Repurchase Agreements [Member] Represents information pertaining to committed master repurchase agreements. Term master repurchase agreement Term Master Repurchase Agreement [Member] Represents information pertaining to term master repurchase agreement. Revolving credit facility Revolving Credit Facility [Member] Total Repurchase Facilities Repurchase Agreements [Member] Uncommitted securities Repurchase Facilities Uncommitted Securities Repurchase Facilities [Member] Represents information pertaining to uncommitted securities repurchase facilities. CLO Debt Collateralized Loan Obligations [Member] Participation Financing - Mortgage Loan Receivable Participation Financing, Mortgage Loan Receivable [Member] Participation Financing, Mortgage Loan Receivable [Member] Letters of credit Letter of Credit [Member] Legal Entity [Axis] Legal Entity [Axis] Entity [Domain] Entity [Domain] Tuebor Tuebor Captive Insurance Company LLC [Member] Represents the information pertaining to Tuebor Captive Insurance Company LLC. Financial Instrument [Axis] Financial Instrument [Axis] Financial Instruments [Domain] Financial Instruments [Domain] CMBS and U.S. Agency Securities Commercial Mortgage Backed Securities and US Agency Securities [Member] Represents information pertaining to CMBS and U.S. Agency Securities. First mortgage commercial real estate loans First Mortgage [Member] Weighted Average Weighted Average [Member] Variable Rate [Axis] Variable Rate [Axis] Variable Rate [Domain] Variable Rate [Domain] One-Month LIBOR London Interbank Offered Rate (LIBOR) [Member] Counterparty Name [Axis] Counterparty Name [Axis] Counterparty Name [Domain] Counterparty Name [Domain] Bank Bank [Member] Bank Deutshe Bank, J.P. Morgan and Wells Fargo Deutshe Bank, J.P. Morgan and Wells Fargo [Member] Deutshe Bank, J.P. Morgan and Wells Fargo Related Reserve IV LLC Related Reserve IV LLC [Member] Related Reserve IV LLC Committed Loan and Securities Repurchase Facilities Securities Sold under Agreements to Repurchase [Abstract] Number of agreements Debt Instrument Number of Agreements Represents number of agreements executed during the period. Committed amount on credit agreement Line of Credit Facility, Maximum Borrowing Capacity Committed financing Securities Sold under Agreements to Repurchase Committed Amount Represents the committed amount as of the balance sheet date of securities that an institution sells and agrees to repurchase (the identical or substantially the same securities) as a seller-borrower at a specified date for a specified price, also known as a repurchase agreement, or repo. Debt borrowings term Debt Instrument, Term Number of additional extension maturity periods Line of Credit Facility, Number of Additional Extensions of Maturity Period Line of Credit Facility, Number of Additional Extensions of Maturity Period Number of extension options Debt Instrument, Number Of Extension Options Debt Instrument, Number of Extension Options Length of additional extension maturity periods Debt Instrument Length of Additional Period of Extension Options Debt Instrument Length of Additional Period of Extension Options Repurchase agreements, number of counterparties Repurchase Agreements, Number of Counterparties Repurchase Agreements, Number of Counterparties Gross amounts of recognized liabilities Securities Sold under Agreements to Repurchase, Gross Excess collateral over amounts borrowed under repurchase agreements Repurchase Agreement Counterparty, Amount at Risk Ratio indebtedness over total equity (as a percent) Concentration Risk, Percentage Haircut on repurchase agreements (as a percent) Repurchase Agreements, Collateral Value in Excess of Loan Amount, Percent Repurchase Agreements, Collateral Value in Excess of Loan Amount, Percent Borrowing Under Credit Facilties and Debt Issuance Costs [Abstract] Borrowing Under Credit Facilties and Debt Issuance Costs [Abstract] Borrowing Under Credit Facilties and Debt Issuance Costs [Abstract] Number of extension maturity periods Line of Credit Facility, Number of Extensions of Maturity Period Represents the number of twelve-month extension maturity periods, subject to the satisfaction of customary conditions under the new revolving credit facility. Basis spread on variable rate (as a percent) Debt Instrument, Basis Spread on Variable Rate Unamortized debt issuance costs Unamortized Debt Issuance Expense Advance rates (as a percent) Debt Instrument Advance Rates as A Percentage of Collateral Represents the advance rates as a percentage of collateral. Mortgage loan receivables held for investment, net, at amortized cost: Mortgage loan financing Secured Debt Net unamortized premiums Debt Instrument, Unamortized Discount (Premium), Net Amortization of premiums Amortization of Debt Discount (Premium) Pledged assets, real estate and lease intangibles, net Pledged Assets, Not Separately Reported, Real Estate and Lease Intangibles, Net Pledged Assets, Not Separately Reported, Real Estate and Lease Intangibles, Net Collateralized Debt Obligations [Abstract] Collateralized Debt Obligations [Abstract] Collateralized Debt Obligations [Abstract] Unamortized debt issuance costs Interest rate Assets Sold under Agreements to Repurchase, Interest Rate Gross amounts offset in the balance sheet Securities Sold under Agreements to Repurchase, Asset Ownership percentage Ownership Percentage Ownership Percentage Proceeds from borrowings under debt obligations Proceeds from Borrowing Under Debt Obligations Proceeds from Borrowing Under Debt Obligations Interest expense, debt Interest Expense, Debt Debt Instrument, Face Amount Debt Instrument, Face Amount Borrowings from Federal Home Loan Bank (FHLB) [Abstract] Federal Home Loan Banks [Abstract] Maximum advance limit Federal Home Loan Bank, Advances, General Debt Obligations, Maximum Amount Available Advance rates of total assets (as a percent) Debt Instrument Advance Rates as a Percentage of Total Assets Represents the advance rates as a percentage of total assets. Advance rates of total equity (as a percent) Debt Instrument Advance Rates as a Percentage of Total Equity Debt Instrument Advance Rates as a Percentage of Total Equity FHLB borrowings outstanding Long-term Federal Home Loan Bank Advances Additional committed term financing available from FHLB Federal Home Loan Bank Advances Additional Committed Available Amount Represents the amount of additional committed term financing available from Federal Home Loan Bank. Weighted average term Debt Instrument, Weighted Average Term Debt Instrument, Weighted Average Term Stated interest rate on debt instrument (as a percent) Debt Instrument, Interest Rate, Stated Percentage Weighted average interest rate Debt, Weighted Average Interest Rate Collateral for debt instrument Debt Instrument, Collateral Amount Amount restricted from transfer Amount of Restricted Net Assets Consolidated and Unconsolidated Subsidiaries Amount of restricted net assets of consolidated and unconsolidated subsidiaries. Maximum percent of FHLB advances to total assets Maximum Percent of FHLB Advances to Total Assets Maximum Percent of FHLB Advances to Total Assets Percent of FHLB advances to total debt obligations outstanding Percent of FHLB Advances to Total Debt Obligations Outstanding Percent of FHLB Advances to Total Debt Obligations Outstanding Ownership interest in LCFH Noncontrolling Interest, Ownership Percentage by Parent Retained earnings, appropriated Retained Earnings, Appropriated Debt instrument, minimum number of days to give notice for redemption without penalty Debt Instrument, Redemption Period, Minimum Days to Give Notice Debt Instrument, Redemption Period, Minimum Number of Days to Give Notice Debt instrument, maximum number of days to give notice for redemption without penalty Debt Instrument, Redemption Period, Maximum Days to Give Notice Debt Instrument, Redemption Period, Maximum Number of Days to Give Notice Debt instrument, repurchase price amount Debt Instrument, Repurchase Amount Debt instrument, repurchased face amount Debt Instrument, Repurchased Face Amount Debt instrument, redemption price percentage Debt Instrument, Redemption Price, Percentage Proceeds from Issuance of Senior Long-term Debt Proceeds from Issuance of Senior Long-term Debt Derivative Instruments and Hedging Activities Disclosure [Abstract] DERIVATIVE INSTRUMENTS Derivative Instruments and Hedging Activities Disclosure [Text Block] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Consolidated Joint Ventures Noncontrolling Interest in Consolidated Joint Ventures [Member] This element represents that portion of equity (net assets) in a subsidiary related to consolidated joint ventures not attributable, directly or indirectly, to the parent. A noncontrolling interest is sometimes called a minority interest. Adjustments for Error Corrections [Axis] Adjustments for Error Corrections [Axis] Adjustments for Error Correction [Domain] Adjustments for Error Correction [Domain] Out-of-Period Adjustment Related to Prior Years Out-of-Period Adjustment Related to Prior Years [Member] Out-of-Period Adjustment Related to Prior Years Apartment Building Apartment Building [Member] Ladder Capital Realty Income Partnership I LP Ladder Capital Realty Income Partnership ILP [Member] Represents the information pertaining to Ladder Capital Realty Income Partnership I LP. LP Units Limited Partner [Member] Limited liability company Limited Liability Company [Member] Co-venturer Co-venturer [Member] Partner Type [Axis] Partner Type [Axis] Partner Type of Partners' Capital Account, Name [Domain] Partner Type of Partners' Capital Account, Name [Domain] Operating Partner Other Ownership Interest [Member] Construction Loan Construction Loan Payable [Member] First mortgage loan Mezzanine Loan Mezzaine Loan [Member] Mezzanine Loan [Member] Investments in unconsolidated joint ventures Ownership interest (as a percent) Equity Method Investment, Ownership Percentage Minimum Average Net Equity Partnership Investment as Basis for Management Fee Reduction Minimum Average Net Equity Partnership Investment as Basis for Management Fee Reduction Minimum Average Net Equity Partnership Investment as Basis for Management Fee Reduction Distributions from operations of investment in unconsolidated joint ventures Proceeds from Equity Method Investment, Distribution Sales Commissions and Fees Sales Commissions and Fees Percentage of equity kicker received with right to convert upon capital event Percentage of Equity Interest Received with Right to Convert upon Capital Event Associated with Loan Origination Percentage of Equity Interest Received with Right to Convert upon Capital Event Associated with Loan Origination Preferred return used to determine distribution of excess cash flow (as a percent) Equity Method Investments Preferred Return Rate used to Determine Distribution of Excess Cash Flow Percent Percentage of preferred return used to determine distribution of excess cash flow under an equity method investment of the entity. Percentage of distribution of all excess cash flows and all disposition proceeds upon any sale entitled after consideration of preferred return and return of equity remaining in the property to operating partner Equity Method Investments Percentage of Distribution of Excess Cash Flows and All Disposition Proceeds upon any Sale Represents the percentage of distribution of all excess cash flows and all disposition proceeds upon any sale entitled after consideration of preferred return and return of equity remaining in the property to operating partner under an equity method investment of the entity. Percentage of investment of operating partner Limited Liability Company (LLC) or Limited Partnership (LP), Managing Member or General Partner, Ownership Interest Amount contributed Equity Method Investment, Aggregate Cost Profit multiplier ratio Profit Multiplier Ratio Profit Multiplier Ratio Ownership percentage after achievement of profit multiplier ratio Equity Method Investment, Ownership Percentage After Achievement of Profit Multiplier Equity Method Investment, Ownership Percentage After Achievement of Profit Multiplier Expenses from investment Equity Method Investment Summarized Financial Information Expenses Represents the amount of expenses reported by an equity method investment of the entity. Interest costs capitalized Interest Costs Capitalized Loans payable outstanding from unconsolidated joint venture Contractual Obligation Number of real estate properties Number of Real Estate Properties Number of real estate properties, under contract Number Of Real Estate Properties, Under Contract Number Of Real Estate Properties, Under Contract Real estate properties, under contract Real Estate Sales, Under Contract Real Estate Sales, Under Contract Real estate properties, under contract, deposit Real Estate Sales, Under Contract, Deposit Percentage Real Estate Sales, Under Contract, Deposit Percentage Outstanding amount under credit agreement Line of Credit, Current Remaining capital commitment to operating partner Partner Capital Commitment Partner Capital Commitment EARNINGS PER SHARE Earnings Per Share [Text Block] Related Party Transactions [Abstract] Schedule of Related Party Transactions, by Related Party [Table] Schedule of Related Party Transactions, by Related Party [Table] Brickell Heights Commercial LLC Brickell Heights Commercial LLC [Member] Brickell Heights Commercial LLC [Member] Related Related [Member] Related Consolidated Joint Venture Corporate Joint Venture [Member] Andrew Steiner Andrew Steiner [Member] Andrew Steiner [Member] Related Special Assets LLC Related Special Assets LLC [Member] Related Special Assets LLC [Member] The Related Group of Florida The Related Group of Florida [Member] The Related Group of Florida [Member] DLA Piper LLP (US) DLA Piper LLP (US) [Member] DLA Piper LLP (US) [Member] Mr. Steiner Mr. Steiner [Member] Mr. Steiner [Member] RELATED PARTY TRANSACTIONS Related Party Transaction [Line Items] Investment in mutual fund Investment Owned, at Cost Fee earned on assets under management (as percentage) Asset Management Fees, Percentage Asset Management Fees, Percentage Fund's cap expense (as percentage) Asset Management Expense Cap, Percentage Asset Management Expense Cap, Percentage Related party purchases of shares from shareholders Related Party Transaction, Related Party Purchases of Shares From Shareholders Related Party Transaction, Related Party Purchases of Shares From Shareholders Mortgage loan participation purchased by related party Loans and Leases Receivable, Related Parties, Mortgage Participation Purchased Loans and Leases Receivable, Related Parties, Mortgage Participation Purchased Participating mortgage loan amount (up to) Loans and Leases Receivable, Related Parties, Participating Mortgage Loan Loans and Leases Receivable, Related Parties, Participating Mortgage Loan Percentage of loans receivable with fixed rates of interest Loans Receivable With Fixed Rates Of Interest, Percentage Loans Receivable With Fixed Rates Of Interest, Percentage Loans receivable from related party Loans and Leases Receivable, Related Parties Ownership Interest (percent) Real Estate Properties, Ownership Interest Real Estate Properties, Ownership Interest Interest income, related party Interest Income, Related Party Fees for legal expenses Related Party Transaction, Expenses from Transactions with Related Party Compensation amount (more than) Related Party Transaction, Compensation Amount Related Party Transaction, Compensation Amount Schedule of offsetting of financial assets Offsetting Assets [Table Text Block] Schedule of offsetting of financial liabilities Offsetting Liabilities [Table Text Block] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Plan Name [Axis] Plan Name [Axis] Plan Name [Domain] Plan Name [Domain] 2014 Omnibus Incentive Plan Omnibus Incentive Plan 2014 [Member] Represents information concerning the 2014 Omnibus Incentive Plan. Other Employee/Director Awards Other Employee and Director Awards [Member] Other Employee and Director Awards [Member] Phantom Equity Investment Plan Phantom Equity Investment Plan [Member] Represents information concerning the Phantom Equity Investment plan. Award Date [Axis] Award Date [Axis] Award Date [Domain] Award Date [Domain] Annual Incentive Awards Granted in 2015 with Respect to 2014 Performance 2015 Annual Restricted Stock, Option Awards [Member] 2015 Annual Restricted Stock, Option Awards [Member] Annual Incentive Awards Granted in 2016 with Respect to 2015 Performance 2016 Annual Restricted Stock, Option Awards [Member] 2016 Annual Restricted Stock, Option Awards [Member] Annual Incentive Awards Granted in 2017 With Respect to 2016 Performance 2017 Annual Restricted Stock Awards [Member] 2017 Annual Restricted Stock Awards [Member] Other 2017 Restricted Stock Awards 2017 Other Restricted Stock Awards [Member] 2017 Other Restricted Stock Awards [Member] Annual Incentive Awards Granted in 2017 With Respect to 2017 Performance 2017 Annual Incentive Awards [Member] 2017 Annual Incentive Awards [Member] 2018 Restricted Stock Awards 2018 Annual Restricted Stock Awards [Member] 2018 Annual Restricted Stock Awards [Member] Other 2018 Restricted Stock Awards Other 2018 Restricted Stock Awards [Member] Other 2018 Restricted Stock Awards [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Recognized equity based compensation expense Allocated Share-based Compensation Expense Ladder Capital Corp Deferred Compensation Plan Deferred Compensation Arrangement with Individual, Compensation Expense Bonus Expense Bonus Expense Bonus Expense Statement of Comprehensive Income [Abstract] Net income (loss) Other comprehensive income (loss) Other Comprehensive Income (Loss), Net of Tax [Abstract] Unrealized gain (loss) on securities, net of tax: Other Comprehensive Income (Loss), Securities, Available-for-sale, Adjustment, after Tax [Abstract] Unrealized gain (loss) on real estate securities, available for sale Other Comprehensive Income (Loss), Securities, Available-for-Sale, Unrealized Holding Gain (Loss) Arising During Period, after Tax Reclassification adjustment for (gains) included in net income Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax Total other comprehensive income (loss) Other Comprehensive Income (Loss), Net of Tax Comprehensive income Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Comprehensive (income) loss attributable to noncontrolling interest in consolidated joint ventures Comprehensive income of combined Class A common shareholders and Operating Partnership unitholders Comprehensive Income Net of Tax Including Noncontrolling Interest in Operating Partnership Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity and noncontrolling interest in operating partnership. Excludes changes in equity resulting from investments by owners and distributions to owners. Comprehensive (income) attributable to noncontrolling interest in operating partnership Noncontrolling Interest in Comprehensive Income (Loss) Operating Partnerships Nonredeemable Amount after tax of comprehensive income (loss) attributable to nonredeemable noncontrolling partner in an operating partnership. Comprehensive income attributable to Class A common shareholders Comprehensive Income (Loss), Net of Tax, Attributable to Parent FAIR VALUE OF FINANCIAL INSTRUMENTS Fair Value Disclosures [Text Block] 2021 Notes Senior Notes Due 2021 [Member] Represents information pertaining to the senior notes that mature August 1, 2021. 2022 Notes Senior Notes Due 2022 [Member] Senior Notes Due 2022 2025 Notes Senior Notes Due 2025 [Member] Senior Notes Due 2025 [Member] Repurchase Agreements and Similar Transactions, Maturity Periods [Axis] Unamortized debt issuance costs Debt issued Debt instrument, authorized repurchase amount Debt Instrument, Authorized Repurchase Amount Debt Instrument, Authorized Repurchase Amount INVESTMENT IN UNCONSOLIDATED JOINT VENTURES Equity Method Investments and Joint Ventures Disclosure [Text Block] Schedule of Finite-Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [Table] In-place leases intangibles In Place Leases Intangibles [Member] Represents information pertaining to in-place leases intangibles. Amortization Expense Amortization Expense [Member] Amortization Expense [Member] Finite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] 2019 Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year 2020 Finite-Lived Intangible Assets, Amortization Expense, Year Two 2021 Finite-Lived Intangible Assets, Amortization Expense, Year Three 2022 Finite-Lived Intangible Assets, Amortization Expense, Year Four 2023 Finite-Lived Intangible Assets, Amortization Expense, Year Five Thereafter Finite-Lived Intangible Assets, Amortization Expense, after Year Five Total Commitments and Contingencies Disclosure [Abstract] Schedule of Fair Value, Off-balance Sheet Risks [Table] Schedule of Fair Value, Off-balance Sheet Risks [Table] Provision for loan losses Unfunded Loan Commitments Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] Number of extension options Operating Lease Number of Extension Options Represents the number of extension options available under operating lease. Rent expense Operating Leases, Rent Expense Unfunded commitments of mortgage loan receivables held for investment Fair Value Disclosure, Off-balance Sheet Risks, Amount, Asset Statement of Cash Flows [Abstract] Consolidated Entities [Axis] Consolidated Entities [Axis] Consolidated Entities [Domain] Consolidated Entities [Domain] Operating Partnership Partnership Interest [Member] Cash flows from operating activities: Net Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] (Gain) loss on extinguishment/defeasance of debt Depreciation and amortization Unrealized (gain) loss on derivative instruments Unrealized Gain (Loss) on Derivatives Unrealized (gain) loss on equity securities Unrealized (gain) loss on Agency interest-only securities Debt Securities, Available-for-sale, Unrealized Gain (Loss) Unrealized (gain) loss on investment in mutual fund Unrealized Gain (Loss) on Investments Provision for loan losses Amortization of equity based compensation Share-based Compensation Amortization of deferred financing costs included in interest expense Amortization of Debt Issuance Costs and Discounts Amortization of premium on mortgage loan financing Amortization of above- and below-market lease intangibles Amortization of above and below Market Leases Amortization of premium/(accretion) of discount and other fees on loans Accretion (Amortization) of Discounts and Premiums, Loans Accretion (Amortization) of Discounts and Premiums, Loans Amortization of premium/(accretion) of discount and other fees on securities Accretion (Amortization) of Discounts and Premiums, Investments Realized (gain) loss on sale of mortgage loan receivables held for sale Realized (gain) loss on real estate securities Realized gain on sale of real estate, net Realized gain on sale of derivative instruments Gain (Loss) on Sale of Derivatives Origination of mortgage loan receivables held for sale Payments for Origination of Mortgage Loans Held-for-sale Purchases of mortgage loan receivables held for sale Payments to Purchase Mortgage Loans Held-for-sale Repayment of mortgage loan receivables held for sale Proceeds from Collection of Mortgage Loans Held-for-sale Proceeds from sales of mortgage loan receivables held for sale Proceeds from Sale of Mortgage Loans Held-for-sale (Income) loss from investments in unconsolidated joint ventures in excess of distributions received Deferred tax asset (liability) Increase (Decrease) in Deferred Income Taxes Payments pursuant to tax receivable agreement Payments Pursuant To Tax Receivable Agreement Payments Pursuant To Tax Receivable Agreement Changes in operating assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] Accrued interest receivable Increase (Decrease) in Accrued Interest Receivable, Net Other assets Increase (Decrease) in Other Operating Assets Accrued expenses and other liabilities Increase (Decrease) in Accrued Liabilities Net cash provided by (used in) operating activities Net Cash Provided by (Used in) Operating Activities Cash flows from investing activities: Net Cash Provided by (Used in) Investing Activities [Abstract] Purchase of derivative instruments Payments for (Proceeds from) Derivative Instrument, Investing Activities Sale of derivative instruments Proceeds from Derivative Instrument, Investing Activities Purchases of real estate securities Payments to Acquire Real Estate Securities Payments to Acquire Real Estate Securities Repayment of real estate securities Proceeds from Maturities, Prepayments and Calls of Debt Securities, Available-for-sale Proceeds from sales of real estate securities Proceeds from Sale of Real Estate Securities Proceeds from Sale of Real Estate Securities Proceeds from sale of FHLB stock Proceeds from Sale of Federal Reserve Bank Stock Origination of mortgage loan receivables held for investment Payments to Acquire Loans and Leases Held For Investment and Origination of Loans The cash outflow from purchases of loans held-for-investment or purchases of leases held-for-investment or origination of loans. Purchases of mortgage loan receivables held for investment Payments to Acquire Loans and Leases Held-for-investment Repayment of mortgage loan receivables held for investment Proceeds from Principal Repayments on Loans and Leases Held-for-investment Basis recovery of Agency interest-only securities Proceeds Of Basis Recovery Of Agency Interest-Only Securities Proceeds Of Basis Recovery Of Agency Interest-Only Securities Capital contributions to investment in unconsolidated joint ventures Payments to Acquire Equity Method Investments Distributions received from investments in unconsolidated joint ventures in excess of income Proceeds from Equity Method Investment, Distribution, Return of Capital Capitalization of interest on investment in unconsolidated joint ventures Interest Paid, Capitalized, Investing Activities Capital contributions to investment in mutual fund Payments to Acquire Investments Purchases of real estate Payments to Acquire Real Estate Held-for-investment Capital improvements of real estate Payments for Capital Improvements Proceeds from sale of real estate Proceeds from Sale of Real Estate Held-for-investment Net cash provided by (used in) investing activities Net Cash Provided by (Used in) Investing Activities Cash flows from financing activities: Net Cash Provided by (Used in) Financing Activities [Abstract] Deferred financing costs paid Payments of Financing Costs Repayment of borrowings under debt obligations Repayments of Borrowings Under Debt Obligations Repayments of Borrowings Under Debt Obligations Cash dividends paid to Class A common shareholders Payments of Ordinary Dividends Capital contributed by noncontrolling interests in consolidated joint ventures Proceeds from Noncontrolling Interests Capital distributed to noncontrolling interests Payments to Noncontrolling Interests Payment of liability assumed in exchange for shares for the minimum withholding taxes on vesting restricted stock Payments Related to Tax Withholding for Share-based Compensation Purchase of treasury stock Payments for Repurchase of Common Stock Issuance of common stock Proceeds from Issuance of Common Stock Common stock offering costs Payments of Stock Issuance Costs Net cash provided by (used in) financing activities Net Cash Provided by (Used in) Financing Activities Net increase (decrease) in cash, cash equivalents and restricted cash Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Excluding Exchange Rate Effect Cash, cash equivalents and restricted cash at beginning of period Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Cash, cash equivalents and restricted cash at end of period Supplemental information: Supplemental Cash Flow Information [Abstract] Cash paid for interest, net of amounts capitalized Interest Paid, Excluding Capitalized Interest, Operating Activities Cash paid (received) for income taxes Income Taxes Paid, Net Non-cash investing and financing activities: Supplemental Disclosure of Non Cash Investing Activities [Abstract] Supplemental Disclosure of Non Cash Investing Activities [Abstract] Securities and derivatives purchased, not settled Other Significant Noncash Transaction, Securities and Derivatives Purchased Other Significant Noncash Transaction, Securities and Derivatives Purchased Securities and derivatives sold, not settled Other Significant Noncash Transaction, Securities Sold Other Significant Noncash Transaction, Securities Sold Origination of mortgage loans receivable held for investment Origination of Mortgage Loans Receivable Held for Investment Origination of Mortgage Loans Receivable Held for Investment Repayment in transit of mortgage loans receivable held for investment (other assets) Increase (Decrease), In Transit Of Mortgage Loans Receivable Held For Investment Increase (Decrease), In Transit Of Mortgage Loans Receivable Held For Investment Transfer from mortgage loans receivable held for sale to mortgage loans receivable held for investment, at amortized cost Transfer from Mortgage Loans Receivable Held for Sale to Mortgage Loans Receivable Held for Investment, at Amortized Cost Transfer from Mortgage Loans Receivable Held for Sale to Mortgage Loans Receivable Held for Investment, at Amortized Cost Proceeds from sale of real estate