Fair Value Disclosures [Abstract] Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Measurement Frequency [Axis] Measurement Frequency [Axis] Fair Value, Measurement Frequency [Domain] Fair Value, Measurement Frequency [Domain] Fair Value, Measurements, Recurring [Member] Fair Value, Measurements, Recurring [Member] Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Fixed Rate Debt Fixed Rate Debt [Member] Fixed Rate Debt [Member] Floating Rate Debt Floating Rate Debt [Member] Floating Rate Debt [Member] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Notes Payable Excluding Interest Rate Swaps and Cap Agreements Notes Payable Excluding Interest Rate Swaps and Cap Agreements Notes Payable Excluding Interest Rate Swaps and Cap Agreements Notes Payable, Fair Value Disclosure Notes Payable, Fair Value Disclosure Interest Rate Derivative Assets, at Fair Value Interest Rate Derivative Assets, at Fair Value Interest Rate Derivative Liabilities, at Fair Value Interest Rate Derivative Liabilities, at Fair Value Preferred Stock, Redemption Date Preferred Stock, Redemption Date Preferred Stock, Redemption Price Per Share Preferred Stock, Redemption Price Per Share Embedded Derivative, Fair Value of Embedded Derivative Asset Embedded Derivative, Fair Value of Embedded Derivative Asset Subsequent Events [Abstract] Subsequent Event [Table] Subsequent Event [Table] Mortgages Mortgages [Member] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Subsequent Event [Member] Subsequent Event [Member] Legal Entity [Axis] Legal Entity [Axis] Entity [Domain] Entity [Domain] Post Soho Square [Member] Post Soho Square [Member] Post Soho Square [Member] Subsequent Event [Line Items] Subsequent Event [Line Items] Area of Land Area of Land Gain on sale of non-depreciable real estate assets Gain (Loss) on Disposition of Other Assets SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate Debt Instrument, Interest Rate, Effective Percentage Debt Instrument, Interest Rate, Effective Percentage Real Estate Acquisitions and Dispositions [Abstract] Real Estate Acquisitions and Dispositions [Abstract] Mergers, Acquisitions and Dispositions Disclosures [Text Block] Mergers, Acquisitions and Dispositions Disclosures [Text Block] Earnings Per Unit [Abstract] Earnings per OP Unit Earnings Per Unit [Text Block] Earnings Per Unit [Text Block] Statement of Cash Flows [Abstract] Statement [Table] Statement [Table] Partner Type [Axis] Partner Type [Axis] Partner Type of Partners' Capital Account, Name [Domain] Partner Type of Partners' Capital Account, Name [Domain] Limited Partner [Member] Limited Partner [Member] Consolidated Entities [Axis] Consolidated Entities [Axis] Consolidated Entities [Domain] Consolidated Entities [Domain] Parent Company [Member] Parent Company [Member] Statement [Line Items] Statement [Line Items] Restricted Cash Restricted Cash Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Cash flows from operating activities: Net Cash Provided by (Used in) Operating Activities [Abstract] Consolidated net income Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Adjustments to reconcile net income to net cash provided by operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Depreciation and amortization Depreciation, Depletion and Amortization Stock compensation expense Share-based Compensation Amortization of debt premium Amortization of Debt Discount (Premium) Settlement of Forward Swaps Settlement of Forward Swaps Settlement of Forward Swaps Gain on sale of non-depreciable real estate assets Gain on Sale of Non-Depreciable Assets Gain on Sale of Non-Depreciable Assets Gain on sale of depreciable real estate assets excluded from discontinued operations Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property Proceeds from Other Operating Activities Proceeds from Other Operating Activities Changes in assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities Cash flows from investing activities: Net Cash Provided by (Used in) Investing Activities [Abstract] Purchases of real estate and other assets Payments To Acquire Real Estate And Other Assets The cash outflow from the acquisition of a piece of land, anything permanently fixed to it, including buildings, structures, and other related assets such as intangibles (in-place-leases) on it and so forth; includes real estate and other assets intended to generate income for the owner; excludes real estate acquired for use by the owner. Payments for Capital Improvements Payments for Capital Improvements Proceeds from Equity Method Investment, Distribution, Return of Capital Proceeds from Equity Method Investment, Distribution, Return of Capital Contributions to Real Estate Joint Ventures Contributions to Real Estate Joint Ventures Contributions to Real Estate Joint Ventures Proceeds from disposition of real estate assets Proceeds from Sale of Real Estate Held-for-investment Payments to Acquire Businesses, Net of Cash Acquired Payments to Acquire Businesses, Net of Cash Acquired Net cash 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] Proceeds from Lines of Credit Proceeds from Lines of Credit Repayments of Lines of Credit Repayments of Lines of Credit Proceeds from notes payable Proceeds from Notes Payable Principal payments on notes payable Repayments of Notes Payable Payment of deferred financing costs Payments of Financing Costs Repurchase of common stock Payments for Repurchase of Common Stock Payment for Debt Extinguishment or Debt Prepayment Cost Payment for Debt Extinguishment or Debt Prepayment Cost Repurchase of common units Payments for Repurchase of Common Units Payments for Repurchase of Common Units Proceeds from issuances of common shares Proceeds from Issuance of Common Stock Proceeds from issuance of common units Proceeds from Issuance of Common Limited Partners Units Proceeds from Stock Options Exercised Proceeds from Stock Options Exercised Dividends, Preferred Stock, Cash Dividends, Preferred Stock, Cash Distributions paid on common units Distributions Paid on Common Units Distributions Paid on Common Units Distributions to noncontrolling interests Payments of Ordinary Dividends, Noncontrolling Interest Dividends paid on common shares Payments of Ordinary Dividends, Common Stock Net cash (used in) provided by financing activities Net Cash Provided by (Used in) Financing Activities Net (decrease) increase in cash, cash equivalents and restricted cash Cash and Cash Equivalents, Period Increase (Decrease) Cash and cash equivalents, beginning of period Cash and Cash Equivalents, at Carrying Value Cash and cash equivalents, end of period Supplemental disclosure of cash flow information: Supplemental Cash Flow Information [Abstract] Interest paid Interest Paid, Excluding Capitalized Interest, Operating Activities Income Taxes Paid Income Taxes Paid Supplemental disclosure of noncash investing and financing activities: Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Conversion of units to shares of common stock Conversion of Stock, Amount Converted Accrued construction in progress Construction in Progress Expenditures Incurred but Not yet Paid Interest capitalized Interest Costs Capitalized Marked-to-market adjustment on derivative instruments Marked To Market Adjustment On Derivative Instruments Marked to Market Adjustment on Derivative Instruments Fair value adjustment on debt assumed Fair value adjustment on debt assumed Fair value adjustment on debt assumed Loan assumption from the Post Properties merger Notes Assumed Purchase Price Post Purchase Price Post Purchase Price Post SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation Disclosure [Abstract] 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] Phase [Axis] Phase [Axis] Phase [Axis] Phase [Domain] Phase [Domain] [Domain] for Phase [Axis] Phase I Phase I [Member] Phase I [Member] Phase II Phase II [Member] Phase II [Member] Phase III [Member] Phase III [Member] Phase III [Member] Real Estate Property Ownership [Axis] Real Estate Property Ownership [Axis] Real Estate Properties [Domain] Real Estate Properties [Domain] Wholly Owned Properties - Residential Wholly Owned Properties [Member] Retail Properties Retail Properties [Member] Retail Properties [Member] Development Properties [Member] Development Properties [Member] Development Properties [Member] Other Property [Member] Other Property [Member] Total Properties Real Estate [Member] Land Held for Future Developments Land Improvements [Member] Total Other Other Real Estate Owned [Member] Other Real Estate Owned [Member] Corporate Real Estate Owned Corporate Real Estate Owned [Domain] Corporate Real Estate Owned [Domain] 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] Buildings and Fixtures Building and Building Improvements [Member] Real Estate and Accumulated Depreciation, Description of Property [Axis] Name of Property [Axis] Real Estate and Accumulated Depreciation, Name of Property [Domain] Name of Property [Domain] Colonial Grand at Quarterdeck [Member] Colonial Grand at Quarterdeck [Member] Colonial Grand at Quarterdeck [Member] Colonial Village at Westchase [Member] Colonial Village at Westchase [Member] Colonial Village at Westchase [Member] River's Walk [Member] River's Walk [Member] River's Walk [Member] 1201 Midtown [Member] 1201 Midtown [Member] 1201 Midtown [Member] Fairways [Member] Fairways [Member] Fairways [Member] Paddock Club Columbia [Member] Paddock Club Columbia [Member] Paddock Club Columbia [Member] Colonial Village at Windsor Place [Member] Colonial Village at Windsor Place [Member] Colonial Village at Windsor Place [Member] Highland Ridge [Member] Highland Ridge [Member] Highland Ridge [Member] Howell Commons [Member] Howell Commons [Member] Howell Commons [Member] Paddock Club Greenville [Member] Paddock Club Greenville [Member] Paddock Club Greenville [Member] Park Haywood [Member] Park Haywood [Member] Park Haywood [Member] Spring Creek [Member] Spring Creek [Member] Spring Creek [Member] Innovation Apartment Homes [Member] Innovation Apartment Homes [Member] Innovation Apartment Homes [Member] Runaway Bay [Member] Runaway Bay [Member] Runaway Bay [Member] Acklen West End [Member] Acklen West End [Member] Acklen West End [Member] Tanglewood [Member] Tanglewood [Member] Tanglewood [Member] Birchall at Ross Bridge Birchall At Ross Bridge [Member] Birchall at Ross Bridge [Member] Colonial Grand at Riverchase Trails Colonial Grand at Riverchase Trails [Member] Colonial Grand at Riverchase Trails [Member] Colonial Village at Trussville Colonial Village at Trussville [Member] Colonial Village at Trussville [Member] Eagle Ridge Eagle Ridge [Member] Eagle Ridge [Member] Colonial Grand at Traditions Colonial Grand at Traditions [Member] Colonial Grand at Traditions [Member] Colonial Grand at Edgewater [Member] Colonial Grand at Edgewater [Member] Colonial Grand at Edgewater [Member] Paddock Club Huntsville Paddock Club at Providence [Member] Paddock Club at Providence [Member] Colonial Grand at Madison Colonial Grand at Madison [Member] Colonial Grand at Madison [Member] Cypress Village at Cypress Village Cypress Village [Member] Cypress Village [Member] Colonial Grand at Liberty Park [Member] Colonial Grand at Liberty Park [Member] Colonial Grand at Liberty Park [Member] Colonial Grand at OldTown Scottsdale [Member] Colonial Grand at OldTown Scottsdale [Member] Colonial Grand at OldTown Scottsdale [Member] Calais Forest [Member] Calais Forest [Member] Calais Forest [Member] SkySong [Member] SkySong [Member] SkySong [Member] Napa Valley [Member] Napa Valley [Member] Napa Valley [Member] Palisades At Chenal Valley [Member] Palisades At Chenal Valley [Member] Palisades at Chenal Valley [Member] Ridge at Chenal Valley Ridge at Chenal Valley [Member] Ridge at Chenal Valley [Member] Westside Creek I & II Westside Creek I And I I [Member] Westside Creek I and II [Member] Edge at Lyon's Gate Edge At Lyons Gate [Member] Edge at Lyon's Gate [Member] Residences at Fountainhead [Member] Residences at Fountainhead [Member] Residences at Fountainhead [Member] Sky View Ranch Sky View Ranch [Member] Sky View Ranch [Member] Talus Ranch Talus Ranch [Member] Talus Ranch [Member] Colonial Grand at Inverness Commons Colonial Grand at Inverness Commons [Member] Colonial Grand at Inverness Commons [Member] Colonial Grand at Scottsdale Colonial Grand at Scottsdale [Member] Colonial Grand at Scottsdale [Member] Tiffany Oaks Tiffany Oaks [Member] Tiffany Oaks [Member] Indigo Point Indigo Point [Member] Indigo Point [Member] Paddock Club Brandon Paddock Club Brandon [Member] Paddock Club Brandon [Member] Colonial Grand at Lakewood Ranch [Member] Colonial Grand at Lakewood Ranch [Member] Colonial Grand at Lakewood Ranch [Member] Preserve at Coral Square Preserve At Coral Square [Member] Preserve at Coral Square [Member] Paddock Club Gainesville Paddock Club Gainesville [Member] Paddock Club Gainesville [Member] The Retreat at Magnolia Parke Retreat At Magnolia Parke [Member] Retreat at Magnolia Parke [Member] Colonial Grand at Heathrow Colonial Grand at Heathrow [Member] Colonial Grand at Heathrow [Member] Atlantic Crossing Atlantic Crossing [Member] Atlantic Crossing [Member] Cooper's Hawk Coopers Hawk [Member] Cooper's Hawk [Member] Hunter's Ridge at Deerwood Hunters Ridge At Deerwood [Member] Hunter's Ridge at Deerwood [Member] Lakeside Lakeside [Member] Lakeside [Member] Lighthouse at Fleming Island Lighthouse At Fleming Island [Member] Lighthouse at Fleming Island [Member] Paddock Club Mandarin Paddock Club Mandarin [Member] Paddock Club Mandarin [Member] St Augustine St Augustine [Member] St. Augustine [Member] Tattersall at Tapestry Park Tattersall At Tapestry Park [Member] Tattersall at Tapestry Park [Member] Woodhollow Woodhollow [Member] Woodhollow [Member] Colonial Grand at Lake Mary Colonial Grand at Lake Mary [Member] Colonial Grand at Lake Mary [Member] Colonial Grand at Town Park Colonial Grand at Town Park [Member] Colonial Grand at Town Park [Member] Colonial Grand at Town Park Reserve Colonial Grand at Town Park Reserve [Member] Colonial Grand at Town Park Reserve [Member] Retreat at Lake Nona Retreat at Lake Nona [Member] Retreat at Lake Nona [Member] Colonial Grand at Heather Glen Colonial Grand at Heather Glen [Member] Colonial Grand at Heather Glen [Member] The Club at Panama Beach Club At Panama Beach [Member] Club at Panama Beach [Member] Colonial Village at Twin Lakes Colonial Village at Twin Lakes [Member] Colonial Village at Twin Lakes [Member] Paddock Club Tallahassee Paddock Club Tallahassee [Member] Paddock Club Tallahassee [Member] Verandas at Southwood [Member] Verandas at Southwood [Member] Verandas at Southwood [Member] Belmere Belmere [Member] Belmere [Member] Links at Carrollwood Links At Carrollwood [Member] Links at Carrollwood [Member] Post Bay at Rocky Point [Member] Post Bay at Rocky Point [Member] Post Bay at Rocky Point [Member] Post Harbour Place [Member] Post Harbour Place [Member] Post Harbour Place [Member] Post Hyde Park [Member] Post Hyde Park [Member] Post Hyde Park [Member] Post Rocky Point [Member] Post Rocky Point [Member] Post Rocky Point [Member] Post Training Facility [Member] Post Training Facility [Member] Post Training Facility [Member] Post Parkside Atlanta [Member] Post Parkside Atlanta [Member] Post Parkside Atlanta [Member] Post Uptown Place [Member] Post Uptown Place [Member] Post Uptown Place [Member] Post Park Maryland [Member] Post Park Maryland [Member] Post Park Maryland [Member] Village Oaks Village Oaks [Member] Village Oaks [Member] Colonial Grand at Hampton Preserve Colonial Grand at Hampton Preserve (Tampa, FL) [Member] Colonial Grand at Hampton Preserve (Tampa, FL) [Member] Colonial Grand at Seven Oaks Colonial Grand at Seven Oaks [Member] Colonial Grand at Seven Oaks [Member] Colonial Grand at Windermere Colonial Grand at Windermere (Orlando, FL) [Member] Colonial Grand at Windermere (Orlando, 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Centennial Park [Member] Post Centennial Park [Member] Post Centennial Park [Member] Prescott Prescott [Member] Prescott [Member] Colonial Grand at Berkeley Lake Colonial Grand at Berkeley Lake [Member] Colonial Grand at Berkeley Lake [Member] Lake Lanier Club [Member] Lake Lanier Club [Member] Lake Lanier Club [Member] Colonial Grand at River Oaks Colonial Grand at River Oaks [Member] Colonial Grand at River Oaks [Member] Colonial Grand at River Plantation Colonial Grand at River Plantation [Member] Colonial Grand at River Plantation [Member] Colonial Grand at McDaniel Farm Colonial Grand at McDaniel Farm [Member] Colonial Grand at McDaniel Farm [Member] Colonial Grand at Pleasant Hill Colonial Grand at Pleasant Hill [Member] Colonial Grand at Pleasant Hill [Member] Colonial Grand at Mount Vernon Colonial Grand at Mount Vernon [Member] Colonial Grand at Mount Vernon [Member] Colonial Grand at Shiloh Colonial Grand at Shiloh [Member] Colonial Grand at Shiloh [Member] Milstead Village Milstead Village [Member] Milstead Village [Member] Colonial Grand at Barrett Creek Colonial Grand at Barrett Creek [Member] Colonial Grand at Barrett Creek [Member] Colonial Grand at Godley Station Colonial Grand at Godley Station [Member] Colonial Grand at Godley Station [Member] Colonial Village at Godley Lake Colonial Village at Godley Lake [Member] Colonial Village at Godley Lake [Member] Avala at Savannah Quarters Avala At Savannah Quarters [Member] Avala at Savannah Quarters [Member] Georgetown Grove Georgetown Grove [Member] Georgetown Grove [Member] Colonial Grand at Hammocks Colonial Grand at Hammocks [Member] Colonial Grand at Hammocks [Member] Haven at Prairie Trace [Member] Haven at Prairie Trace [Member] Haven at Prairie Trace [Member] Colonial Village at Greentree Colonial Village at Greentree [Member] Colonial Village at Greentree [Member] Grand Reserve at Pinnacle [Member] Grand Reserve at Pinnacle [Member] Grand Reserve at Pinnacle [Member] Colonial Village at Huntington Colonial Village at Huntington [Member] Colonial Village at Huntington [Member] Colonial Village at Marsh Cove Colonial Village at Marsh Cove [Member] Colonial Village at Marsh Cove [Member] Oaks at Wilmington Island Oaks At Wilmington Island [Member] Oaks at Wilmington Island [Member] Highlands of West Village I [Member] Highlands of West Village I [Member] Highlands of West Village I [Member] The Denton III [Member] The Denton III [Member] The Denton III [Member] Lakepointe [Member] Lakepointe [Member] Lakepointe [Member] The Denton [Member] The Denton [Member] The Denton [Member] Mansion [Member] Mansion [Member] Mansion [Member] Village [Member] Village [Member] Village [Member] Stonemill Village [Member] Stonemill Village [Member] Stonemill Village [Member] Crosswinds [Member] Crosswinds [Member] Crosswinds [Member] Pear Orchard [Member] Pear Orchard [Member] Pear Orchard [Member] Reflection Pointe [Member] Reflection Pointe [Member] Reflection Pointe [Member] Lakeshore Landing [Member] Lakeshore Landing [Member] Lakeshore Landing [Member] Market Station [Member] Market Station [Member] Market Station [Member] Colonial Grand at Desert Vista [Member] Colonial Grand at Desert Vista [Member] Colonial Grand at Desert Vista [Member] Colonial Grand at Palm Vista [Member] Colonial Grand at Palm Vista [Member] Colonial Grand at Palm Vista [Member] Colonial Village at Beaver Creek (Raleigh, NC) [Member] Colonial Village at Beaver Creek (Raleigh, NC) [Member] Colonial Village at Beaver Creek [Member] Hermitage at Beechtree Hermitage At Beechtree [Member] Hermitage at Beechtree [Member] Waterford Forest Waterford Forest [Member] Waterford Forest [Member] 1225 South Church I South Church 1225 I [Member] South Church 1225 I [Member] Colonial Grand at Ayrsley [Member] Colonial Grand at Ayrsley [Member] Colonial Grand at Ayrsley [Member] Colonial Grand at Beverly Crest [Member] Colonial Grand at Beverly Crest [Member] Colonial Grand at Beverly Crest [Member] Colonial Grand at Legacy Park [Member] Colonial Grand at Legacy Park [Member] Colonial Grand at Legacy Park [Member] Colonial Grand at Mallard Creek [Member] Colonial Grand at Mallard Creek [Member] Colonial Grand at Mallard Creek [Member] Colonial Village at South Tryon Colonial Village at South Tryon [Member] Colonial Village at South Tryon [Member] Colonial Village at Timber Crest [Member] Colonial Village at Timber Crest [Member] Colonial Village at Timber Crest [Member] Enclave [Member] Enclave [Member] Enclave [Member] Post Ballantyne [Member] Post Ballantyne [Member] Post Ballantyne [Member] Post Gateway Place [Member] Post Gateway Place [Member] Post Gateway Place [Member] Post Park at Phillips Place [Member] Post Park at Phillips Place [Member] Post Park at Phillips Place [Member] Post Parkside at Wade [Member] Post Parkside at Wade [Member] Post Parkside at Wade [Member] Post Parkside Orlando [Member] Post Parkside Orlando [Member] Post Parkside Orlando [Member] Post South End [Member] Post South End [Member] Post South End [Member] Post Uptown [Member] Post Uptown [Member] Post Uptown [Member] Colonial Grand at Cornelius [Member] Colonial Grand at Cornelius [Member] Colonial Grand at Cornelius [Member] Colonial Grand at Patterson Place [Member] Colonial Grand at Patterson Place [Member] Colonial Grand at Patterson Place [Member] Colonial Village at Deerfield [Member] Colonial Village at Deerfield [Member] Colonial Village at Deerfield [Member] Colonial Grand at Research Park [Member] Colonial Grand at Research Park [Member] Colonial Grand at Research Park [Member] Colonial Grand at Huntersville [Member] Colonial Grand at Huntersville [Member] Colonial Grand at Huntersville [Member] Colonial Village at Matthews [Member] Colonial Village at Matthews [Member] Colonial Village at Matthews [Member] Colonial Grand at Matthews Commons [Member] Colonial Grand at Matthews Commons [Member] Colonial Grand at Matthews Commons [Member] Colonial Grand at Arringdon [Member] Colonial Grand at Arringdon [Member] Colonial Grand at Arringdon [Member] Colonial Grand at Brier Creek (Raleigh, NC) [Member] Colonial Grand at Brier Creek (Raleigh, NC) [Member] Colonial Grand at Brier Creek [Member] Colonial Grand at Brier Falls (Raleigh, NC) [Member] Colonial Grand at Brier Falls (Raleigh, NC) [Member] Colonial Grand at Brier Falls (Raleigh, NC) [Member] Colonial Grand at Crabtree Valley [Member] Colonial Grand at Crabtree Valley [Member] Colonial Grand at Crabtree Valley [Member] Hue [Member] Hue [Member] Hue [Member] Colonial Grand at Trinity Commons [Member] Colonial Grand at Trinity Commons [Member] Colonial Grand at Trinity Commons [Member] Preserve At Brier Creek [Member] Preserve At Brier Creek [Member] Preserve at Brier Creek [Member] Providence At Brier Creek [Member] Providence At Brier Creek [Member] Providence at Brier Creek [Member] Woodwinds [Member] Woodwinds [Member] Woodwinds [Member] 535 Brookwood Brookwood 535 [Member] Brookwood 535 [Member] Park Place Park Place [Member] Park Place [Member] Charlotte at MIdtown [Member] Charlotte at MIdtown [Member] Charlotte at MIdtown [Member] Farmington Village [Member] Farmington Village [Member] Farmington Village [Member] Colonial Village at Waters Edge Colonial Village at Waters Edge [Member] Colonial Village at Waters Edge [Member] Hamilton Pointe Hamilton Pointe [Member] Hamilton Pointe [Member] Hidden Creek Hidden Creek [Member] Hidden Creek [Member] Steeplechase Steeplechase [Member] Steeplechase [Member] Windridge Windridge [Member] Windridge [Member] Kirby Station Kirby Station [Member] Kirby Station [Member] Lincoln on the Green Lincoln On Green [Member] Lincoln on the Green [Member] Park Estate Park Estate [Member] Park Estate [Member] Reserve at Dexter Lake Reserve At Dexter Lake [Member] Reserve at Dexter Lake [Member] Post West Austin [Member] Post West Austin [Member] Post West Austin [Member] Post Park Mesa [Member] Post Park Mesa [Member] Post Park Mesa [Member] Paddock Club Murfreesboro Paddock Club Murfreesboro [Member] Paddock Club Murfreesboro [Member] Aventura at Indian Lake Village Aventura At Indian Lake Village [Member] Aventura at Indian Lake Village [Member] Avondale at Kennesaw Avondale At Kennesaw [Member] Avondale at Kennesaw [Member] Brentwood Downs Brentwood Downs [Member] Brentwood Downs [Member] Colonial Grand at Bellevue Colonial Grand at Bellevue [Member] Colonial Grand at Bellevue [Member] Grand View Nashville Grand View Nashville [Member] Grand View Nashville [Member] Monthaven Park Monthaven Park [Member] Monthaven Park [Member] Park at Hermitage Park At Hermitage [Member] Park at Hermitage [Member] Venue at Cool Springs Venue at Cool Springs [Member] Venue at Cool Springs [Member] Verandas at Sam Ridley Verandas At Sam Ridley [Member] Verandas at Sam Ridley [Member] Balcones Woods Balcones Woods [Member] Balcones Woods [Member] Colonial Grand at Canyon Creek Colonial Grand at Canyon Creek (Austin, TX) [Member] Colonial Grand at Canyon Creek (Austin, TX) [Member] Colonial Grand at Canyon Pointe Colonial Grand at Canyon Pointe [Member] Colonial Grand at Canyon Pointe [Member] Post Abbey [Member] Post Abbey [Member] Post Abbey [Member] Post Addison Circle [Member] Post Addison Circle [Member] Post Addison Circle [Member] Post Cole's Corner [Member] Post Cole's Corner [Member] Post Cole's Corner [Member] Colonial Grand at Double Creek Colonial Grand at Double Creek (Austin, TX) [Member] Colonial Grand at Double Creek (Austin, TX) [Member] Colonial Grand at Onion Creek Colonial Grand at Onion Creek [Member] Colonial Grand at Onion Creek [Member] Post Eastside [Member] Post Eastside [Member] Post Eastside [Member] Post Gallery [Member] Post Gallery [Member] Post Gallery [Member] Post Heights [Member] Post Heights [Member] Post Heights [Member] Post Katy Trail [Member] Post Katy Trail [Member] Post Katy Trail [Member] Post Legacy [Member] Post Legacy [Member] Post Legacy [Member] Post Meridian [Member] Post Meridian [Member] Post Meridian [Member] Post Sierra at Frisco Bridges [Member] Post Sierra at Frisco Bridges [Member] Post Sierra at Frisco Bridges [Member] Post Square [Member] Post Square [Member] Post Square [Member] Post Uptown Village [Member] Post Uptown Village [Member] Post Uptown Village [Member] Post Vineyard [Member] Post Vineyard [Member] Post Vineyard [Member] Post Vintage [Member] Post Vintage [Member] Post Vintage [Member] Post Worthington [Member] Post Worthington [Member] Post Worthington [Member] Grand Reserve at Sunset Valley Grand Reserve At Sunset Valley [Member] Grand Reserve at Sunset Valley [Member] Colonial Village at Quarry Oaks Colonial Village at Quarry Oaks [Member] Colonial Village at Quarry Oaks [Member] Colonial Grand at Wells Branch Colonial Grand at Wells Branch [Member] Colonial Grand at Wells Branch [Member] Legacy at Western Oaks Legacy at Western Oaks [Member] Legacy at Western Oaks [Member] Post South Lamar [Member] Post South Lamar [Member] Post South Lamar [Member] Post Barton Creek [Member] Post Barton Creek [Member] Post Barton Creek [Member] Silverado Silverado [Member] Silverado [Member] Stassney Woods Stassney Woods [Member] Stassney Woods [Member] Travis Station Sixty 600 [Member] Sixty 600 [Member] Woods, The Woods [Member] Woods, The [Member] Colonial Village at Shoal Creek Colonial Village at Shoal Creek [Member] Colonial Village at Shoal Creek [Member] Colonial Village at Willow Creek Colonial Village at Willow Creek [Member] Colonial Village at Willow Creek [Member] Post Midtown Square [Member] Post Midtown Square [Member] Post Midtown Square [Member] Rise Condo Development [Member] Rise Condo Development [Member] Rise Condo Development [Member] Post 510 [Member] Post 510 [Member] Post 510 [Member] Colonial Grand at Hebron (Dallas, TX) [Member] Colonial Grand at Hebron (Dallas, TX) [Member] Colonial Grand at Hebron (Dallas, TX) [Member] Colonial Grand at Silverado [Member] Colonial Grand at Silverado [Member] Colonial Grand at Silverado [Member] Colonial Grand at Silverado Reserve [Member] Colonial Grand at Silverado Reserve [Member] Colonial Grand at Silverado Reserve [Member] Yale at 6th [Member] Yale at 6th [Member] Yale at 6th [Member] Grand Cypress [Member] Grand Cypress [Member] Grand Cypress [Member] Courtyards at Campbell Courtyards At Campbell [Member] Courtyards at Campbell [Member] Deer Run Deer Run [Member] Deer Run [Member] Grand Courtyard Grand Courtyard [Member] Grand Courtyard [Member] Legends at Lowe's Farm Legends At Lowe Farm [Member] Legends at Lowe Farm [Member] Colonial Reserve at Medical District Colonial Reserve at Medical District (Dallas, TX) [Member] Colonial Reserve at Medical District (Dallas, TX) [Member] Watermark Watermark [Member] Watermark [Member] Colonial Grand at Bear Creek Colonial Grand at Bear Creek [Member] Colonial Grand at Bear Creek [Member] Colonial Grand at Fairview Colonial Grand at Fairview (Dallas, TX) [Member] Colonial Grand at Fairview (Dallas, TX) [Member] La Valencia At Starwood La Valencia At Starwood [Member] La Valencia at Starwood [Member] Colonial Reserve at Frisco Bridges Colonial Reserve at Frisco Bridges (Dallas, TX) [Member] Colonial Reserve at Frisco Bridges (Dallas, TX) Colonial Village at Grapevine Colonial Village at Grapevine [Member] Colonial Village at Grapevine [Member] Greenwood Forest Greenwood Forest [Member] Greenwood Forest [Member] Legacy Pines Legacy Pines [Member] Legacy Pines [Member] Park Place (Houston) Park Place Houston [Member] Park Place Houston [Member] Ranchstone Ranchstone [Member] Ranchstone [Member] Retreat at Vintage Park [Member] Retreat at Vintage Park [Member] Retreat at Vintage Park [Member] Cascade at Fall Creek Cascade At Fall Creek [Member] Cascade at Fall Creek [Member] Bella Casita at Las Colinas Bella Casita At Las Colinas [Member] Bella Casita at Las Colinas [Member] Remington Hills Remington Hills [Member] Remington Hills [Member] Colonial Reserve at Las 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[Member] Venue at Stonebridge Ranch [Member] Venue at Stonebridge Ranch [Member] Highwood Highwood [Member] Highwood [Member] Cityscape at Market Center [Member] Cityscape at Market Center [Member] Cityscape at Market Center [Member] Los Rios Park [Member] Los Rios Park [Member] Los Rios Park [Member] Boulder Ridge Boulder Ridge [Member] Boulder Ridge [Member] Copper Ridge Copper Ridge [Member] Copper Ridge [Member] Colonial Grand at Ashton Oaks Colonial Grand at Ashton Oaks [Member] Colonial Grand at Ashton Oaks [Member] Colonial Grand at Round Rock Colonial Grand at Round Rock [Member] Colonial Grand at Round Rock [Member] Cobblestone Square [Member] Cobblestone Square [Member] Cobblestone Square [Member] Colonial Village at Sierra Vista Colonial Village at Sierra Vista [Member] Colonial Village at Sierra Vista [Member] Alamo Ranch Alamo Ranch [Member] Alamo Ranch [Member] Haven at Blanco The Haven at Blanco [Member] The Haven at Blanco [Member] Stone Ranch at Westover Hills Stone 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Ashley Park Ashley Park [Member] Ashley Park [Member] Colonial Village at Chase Gayton Colonial Village at Chase Gayton [Member] Colonial Village at Chase Gayton [Member] Hamptons at Hunton Park Hamptons At Hunton Park [Member] Hamptons at Hunton Park [Member] Highlands of West Village [Member] Highlands of West Village [Member] Highlands of West Village [Member] Allure at Buckhead Allure at Buckhead [Member] Allure at Buckhead [Member] 1225 South Church 1225 South Church [Member] 1225 South Church [Member] Colonial Grand at Randal Lakes Colonial Grand at Randal Lakes [Member] Colonial Grand at Randal Lakes [Member] Post Lake at Baldwin Park [Member] Post Lake at Baldwin Park [Member] Post Lake at Baldwin Park [Member] Post Lakeside [Member] Post Lakeside [Member] Post Lakeside [Member] Post Parkside [Member] Post Parkside [Member] Post Parkside [Member] Post Peachtree Hills [Member] Post Peachtree Hills [Member] Post Peachtree Hills [Member] Post Riverside [Member] Post Riverside [Member] Post Riverside [Member] Post Spring [Member] Post Spring [Member] Post Spring [Member] Post Stratford [Member] Post Stratford [Member] Post Stratford [Member] Colonial Village at Chancellor Park [Member] Colonial Village at Chancellor Park [Member] Colonial Village at Chancellor Park [Member] 220 Riverside 220 Riverside [Member] 220 Riverside [Member] Colonial Grand at Mallard Lake [Member] Colonial Grand at Mallard Lake [Member] Colonial Grand at Mallard Lake [Member] Colonial Grand at University Center [Member] Colonial Grand at University Center [Member] Colonial Grand at University Center [Member] Colonial Reserve at South End (Charlotte, NC) [Member] Colonial Reserve at South End (Charlotte, NC) [Member] Colonial Reserve at South End (Charlotte, NC) [Member] Retreat at West Creek II [Member] Retreat at West Creek II [Member] Retreat at West Creek II [Member] Colonial Grand at Cypress Cove [Member] Colonial Grand at Cypress Cove [Member] Colonial Grand at Cypress Cove [Member] Colonial Village at Hampton Pointe [Member] Colonial Village at Hampton Pointe [Member] Colonial Village at Hampton Pointe [Member] Colonial Grand at Commerce Park (Charleston, SC) [Member] Colonial Grand at Commerce Park (Charleston, SC) [Member] Colonial Grand at Commerce Park (Charleston, SC) [Member] Sync 36 I [Member] [Member] Sync 36 I [Member] [Member] Post River North [Member] Post River North [Member] Post River North [Member] 1201 Midtown II [Member] [Member] 1201 Midtown II [Member] [Member] 1201 Midtown II [Member] [Member] Post Parkside at Wade III [Member] Post Parkside at Wade III [Member] Post Sierra at Frisco Bridges II [Member] Post Sierra at Frisco Bridges II [Member] Post Sierra at Frisco Bridges II [Member] Sync 36 II [Member] Sync 36 II [Member] Sync 36 II [Member] Range [Axis] Range [Axis] Range Range [Domain] Maximum Maximum [Member] Minimum Minimum [Member] 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 Land SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land Initial Cost Buildings and Fixtures SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Cost Capitalized Subsequent to Acquisition, Land SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Cost Capitalized Subsequent to Acquisition, Land Cost Capitalized subsequent to Acquisition SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Cost Capitalized Subsequent to Acquisition, Cost Gross Amount, Land SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Land, Amount Gross Amount, Buildings and Fixtures SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Building and Improvements, Amount Total SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Gross Accumulated Depreciation SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation Net Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements Net Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements Net SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired Disclosure of Compensation Related Costs, Share-based Payments [Abstract] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Award Type [Axis] Award Type [Axis] Equity Award [Domain] Equity Award [Domain] Restricted Stock [Member] Restricted Stock [Member] Employee Stock Option [Member] Employee Stock Option [Member] Vesting [Axis] Vesting [Axis] Vesting [Domain] Vesting [Domain] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Minimum Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Minimum Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Maximum Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Maximum Share-based Compensation Arrangement by Share-based Payment Award, Award Requisite Service Period Share-based Compensation Arrangement by Share-based Payment Award, Award Requisite Service Period Employee Benefit Plans [Abstract] Employee Benefit Plans [Abstract] EMPLOYEE BENEFIT PLANS Compensation and Employee Benefit Plans [Text Block] Net Loss or Income Per Unit Disclosure [Table] Net Loss or Income Per Unit Disclosure [Table] Net Loss or Income Per Unit Disclosure [Table] Antidilutive Securities [Axis] Antidilutive Securities [Axis] Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Scenario [Axis] Scenario [Axis] Scenario, Unspecified [Domain] Scenario, Unspecified [Domain] Calculation of Basic Earnings Per Unit [Member] Calculation of Basic Earnings Per Unit [Member] Calculation of Basic Earnings Per Unit [Member] Calculation of Diluted Earnings Per Unit [Member] Calculation of Diluted Earnings Per Unit [Member] Calculation of Diluted Earnings Per Unit [Member] Earnings Per Unit Disclosure Earnings Per Share Disclosure [Line Items] Earnings Per Share Disclosure [Line Items] Earnings Per Share, Basic [Abstract] Earnings Per Share, Basic [Abstract] Income from Continuing Operations, Including Portion Attributable to Noncontrolling Interest Income from Continuing Operations, Including Portion Attributable to Noncontrolling Interest Income from Continuing Operations, Including Portion Attributable to Noncontrolling Interest Income from continuing operations allocated to unvested restricted shares Income from continuing operations allocated to unvested restricted shares Income from continuing operations allocated to unvested restricted shares Dividends, Preferred Stock, Cash Income from continuing operations available for common unitholders, adjusted Adjusted Income (Loss) from Continuing Operations Available for Common Unitholders Adjusted Income (Loss) from Continuing Operations Available for Common Unitholders Weighted average common units - basic Weighted Average Number of Limited Partnership and General Partnership Unit Outstanding, Basic and Diluted Earnings per unit - basic Basic Earnings Per Unit Basic Earnings Per Unit Weighted Average Number Diluted Shares Outstanding Adjustment Weighted Average Number Diluted Shares Outstanding Adjustment Weighted average common shares - diluted Weighted Average Number of Shares Outstanding, Diluted Diluted Earnings Per Unit Diluted Earnings Per Unit Diluted Earnings Per Unit Effect of dilutive securities (units) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Disclosure - Unaudited Pro forma Information [Abstract] Disclosure - Unaudited Pro forma Information [Abstract] Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Balance Sheet Location [Axis] Balance Sheet Location [Axis] Balance Sheet Location [Domain] Balance Sheet Location [Domain] Building and Building Improvements Construction in Progress Construction in Progress [Member] Unimproved Land Unimproved Land [Member] Unimproved Land [Member] Real Estate Investment [Member] Real Estate Investment [Member] Cash and Cash Equivalents [Member] Cash and Cash Equivalents [Member] Restricted Cash Restricted Cash [Member] Restricted Cash Other Assets Other Assets [Member] Debt Debt [Member] Other Liabilities Other Liabilities [Member] Noncontrolling Interest Noncontrolling Interest [Member] Business Acquisition [Axis] Business Acquisition [Axis] Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] Post [Member] [Domain] Post [Member] [Domain] Post [Member] [Member] Business Acquisition [Line Items] Business Acquisition [Line Items] Business Acquisition, PPA, Assets Acquired Business Acquisition, PPA, Assets Acquired Business Acquisition, PPA, Assets Acquired Business Acquisition, Purchase Price Allocation, Assets Acquired Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets Business Acquisition, PPA, Liabilities Assumed Business Acquisition, PPA, Liabilities Assumed Business Acquisition, PPA, Liabilities Assumed Business Acquisition, Purchase Price Allocation, Liabilities Assumed Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities Business Acquisition, Cost of Entity Acquired, Purchase Price Business Acquisition, Cost of Entity Acquired, Purchase Price Business Acquisition, Cost of Entity Acquired, Purchase Price Document and Entity Information [Abstract] Document and Entity Information [Abstract] Entities [Table] Entities [Table] Document Information [Line Items] Document Information [Line Items] Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Trading Symbol Trading Symbol Amendment Flag Amendment Flag Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Entity Filer Category Entity Filer Category Document Type Document Type Document Period End Date Document Period End Date Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Entity Well-known Seasoned Issuer Entity Well-known Seasoned Issuer Entity Voluntary Filers Entity Voluntary Filers Entity Current Reporting Status Entity Current Reporting Status Entity Public Float Entity Public Float Entity Emerging Growth Company Entity Emerging Growth Company Entity Small Business Entity Small Business Entity Shell Company Entity Shell Company Disclosure Income Taxes Additional Information [Abstract] Disclosure - INCOME TAXES - Additional Information [Abstract] Federal Income Tax Note [Table] Federal Income Tax Note [Table] Hedging Designation [Axis] Hedging Designation [Axis] Hedging Designation Hedging Designation [Domain] Designated as Hedging Instrument Designated as Hedging Instrument [Member] Subsidiary of Common Parent Subsidiary of Common Parent [Member] Derivative Instrument Derivative Instrument [Axis] Derivative Contract [Domain] Derivative Contract [Domain] Interest Rate Swap Interest Rate Swap [Member] Investments, Owned, Federal Income Tax Note Investments, Owned, Federal Income Tax Note [Line Items] Income tax expense/(benefit) Income Tax Expense (Benefit) Operating Loss Carryforwards Operating Loss Carryforwards Income tax expense Income Tax Expense Income Tax Expense Notes To Financial Statements [Abstract] Notes to Financial Statements [Abstract] SEGMENT INFORMATION Segment Reporting Disclosure [Text Block] Key Assumptions for Restricted Stock Grants [Abstract] Key Assumptions for Restricted Stock Grants [Abstract] Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Issues in Period Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Issues in Period Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Issues in Period Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Issues in Period, Weighted Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Issues in Period, Weighted Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Issues in Period, Weighted Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Earnings per share of the trust [Abstract] Earnings per share of the trust [Abstract] Earnings per share Earnings Per Share [Text Block] Disclosure Revenues And NOI For Reportable Segment [Abstract] Disclosure - Revenues and NOI for Reportable Segment [Abstract] Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table] Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table] Statement, Business Segments [Axis] Segments [Axis] Segment [Domain] Segments [Domain] Same Store [Member] Same Store [Member] Same Store [Member] Non Same Store And Other Non Same Store And Other [Member] Non Same Store and Other [Member] Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] Revenues Revenues [Abstract] Total operating revenues Revenues Net operating income Operating Income Before Depreciation Represents total operating revenues less property operating expenses, excluding depreciation. Depreciation and amortization Depreciation, Depletion and Amortization, Nonproduction Other Cost and Expense, Operating Other Cost and Expense, Operating General and administrative expense General and Administrative Expense Business Combination, Merger and Integration Related Expenses Business Combination, Merger and Integration Related Expenses Business Combination, Merger and Integration Related Expenses Interest expense Interest Expense Gain on sale of depreciable real estate assets excluded from discontinued operations Gain (Loss) on Disposition of Property Plant Equipment Other Nonoperating Income (Expense) Other Nonoperating Income (Expense) Gain (loss) from real estate joint ventures Income (Loss) from Equity Method Investments Net income attributable to noncontrolling interests Net Income (Loss) Attributable to Noncontrolling Interest Preferred Stock Dividends, Income Statement Impact Preferred Stock Dividends, Income Statement Impact Net income attributable to MAA Net Income (Loss) Attributable to Parent Revenue from Contract with Customer, Including Assessed Tax Revenue from Contract with Customer, Including Assessed Tax Property Management Fee Revenue Property Management Fee Revenue Other Operating Income Other Operating Income Income Taxes [Abstract] Income Taxes [Abstract] Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Taxability Of Cash Distributions Table [Text Block] Taxability Of Cash Distributions Table [Text Block] Taxability of cash distributions, table. SUBSEQUENT EVENTS Subsequent Events [Text Block] Related Party Transactions [Abstract] Schedule of Related Party Transactions, by Related Party [Table] Schedule of Related Party Transactions, by Related Party [Table] Related Party Transactions, by Related Party [Axis] Related Party [Axis] Related Party [Domain] Related Party [Domain] Related Party Transaction [Line Items] Related Party Transaction [Line Items] Due to Related Parties, Current Due to Related Parties, Current Schedule of Significant Acquisitions and Disposals [Table] Sync 36 I [Member] [Member] Hue [Member] Long Point Road - Houston [Member] Houston - Outparcel [Member] Houston - Outparcel [Member] Westminster - Denver [Member] Westminster - Outparcel [Member] Westminster - Outparcel [Member] Craft Farms Residential - Outparcel [Member] Craft Farms Residential - Outparcel [Member] Craft Farms Residential - Outparcel [Member] Randal Park - Outparcel [Member] Randal Park - Outparcel [Member] Randal Park - Outparcel [Member] CG at Azure - Outparcel [Member] CG at Azure - Outparcel [Member] CG at Azure - Outparcel [Member] Spring Hill - Outparcel [Member] Spring Hill - Outparcel [Member] Spring Hill - Outparcel [Member] Spring Hill - Outparcel 2 [Member] Spring Hill - Outparcel 2 [Member] Spring Hill - Outparcel 2 Significant Acquisitions and Disposals [Line Items] Acquisitions and Disposals [Line Items] Acquisitions and Disposals [Line Items] Number of units in real estate property Number of Units in Real Estate Property Square footage of real estate property (square foot) Area of Real Estate Property Stock Based Compensation [Abstract] Stock Based Compensation [Abstract] Valuation Assumption [Axis] Valuation Assumption [Axis] Valuation Assumption [Axis] Valuation Assumption [Domain] Valuation Assumption [Domain] Valuation Assumption [Domain] Risk Free Rate [Member] Risk Free Rate [Member] Risk Free Rate [Member] Volatility [Member] Volatility [Member] Volatility [Member] Plan Name [Axis] Plan Name [Axis] Plan Name [Domain] Plan Name [Domain] 2013 Stock Incentive Plan [Member] Second Amended and Restated 2013 Stock Incentive Plan [Member] Stock Incentive Plan 2013 [Member] Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized Allocated Share-based Compensation Expense Allocated Share-based Compensation Expense Employee Service Share-based Compensation, Allocation of Recognized Period Costs, Capitalized Amount Employee Service Share-based Compensation, Allocation of Recognized Period Costs, Capitalized Amount Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition Employee Service Share-based Compensation, Cash Flow Effect, Cash Used to Settle Awards Employee Service Share-based Compensation, Cash Flow Effect, Cash Used to Settle Awards Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term Proceeds from Stock Options Exercised Disclosure Outstanding Interest Rate Derivatives Designated As Cash Flow Hedges Of Interest Rate Risk [Abstract] Disclosure - Outstanding Interest Rate Derivatives Designated as Cash Flow Hedges of Interest Rate Risk [Abstract] Derivative [Table] Derivative [Table] Interest Rate Cap Interest Rate Cap [Member] Derivative Derivative [Line Items] Cash Flow Hedges Derivative Instruments at Fair Value, Net Cash Flow Hedges Derivative Instruments at Fair Value, Net Number of Instruments Derivative, Number of Instruments Held Derivative, Notional Amount Derivative, Notional Amount Maximum Length of Time Hedged in Cash Flow Hedge Maximum Length of Time Hedged in Cash Flow Hedge Schedule of Calculation of Numerator and Denominator in Earnings Per Share [Table Text Block] Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Summary and rollforward of real estate investments and accumulated depreciation Summary and Rollforward of Real Estate Investments and Accumulated Depreciation [Text Block] Summary and Rollforward of Real Estate Investments and Accumulated Depreciation [Text Block] DERIVATIVES AND HEDGING ACTIVITIES Derivative Instruments and Hedging Activities Disclosure [Text Block] Investment Type [Axis] Investment Type [Axis] Investment Type Categorization [Domain] Investments [Domain] Assets Held-for-sale Disposal Group, Held-for-sale, Not Discontinued Operations [Member] Real Estate Property Ownership [Axis] Commercial Commercial Real Estate [Member] Real Estate Investments [Abstract] SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] Balance at beginning of year Acquisitions SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Other Acquisition Less: FMV of Leases included in Acquisitions Capital Leased Assets, Gross Improvement and development Real Estate, Improvements and Developments Real Estate, Improvements and Developments Disposition of real estate assets SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Cost of Investment in Real Estate Sold Balance at end of year Real Estate and Accumulated Depreciation Disclosure [Abstract] SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward] Balance at beginning of year Depreciation SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation, Depreciation Expense Accumulated depreciation Real Estate Investment Property, Accumulated Depreciation Disposition of real estate assets SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation, Investment in Real Estate Sold Balance at end of year Disclosure - Consolidation and Basis of Presentation and Significant Accounting Policies - Additional Information [Abstract] Disclosure - Consolidation and Basis of Presentation and Significant Accounting Policies - Additional Information [Abstract] Schedule of Real Estate Properties [Table] Schedule of Real Estate Properties [Table] Leases, Acquired-in-Place [Member] Leases, Acquired-in-Place [Member] Litigation Status [Axis] Litigation Status [Axis] Litigation Status [Domain] Litigation Status [Domain] Adjustments for New Accounting Pronouncements [Axis] Adjustments for New Accounting Pronouncements [Axis] Type of Adoption [Domain] Type of Adoption [Domain] Accounting Standards Update 2016-15 [Member] Accounting Standards Update 2016-15 [Member] Accounting Standards Update 2016-18 [Member] Accounting Standards Update 2016-18 [Member] Accounting Standards Update 2016-02 [Member] Accounting Standards Update 2016-02 [Member] Utility Revenue [Axis] Utility Revenue [Axis] Revenue collected from tenants for the cost of provided utilities. Utility Revenue [Domain] Utility Revenue [Domain] [Domain] for Revenue collected from tenants for the cost of provided utilities. Water Utility Revenue [Member] Water Utility Revenue [Member] Reimbursement revenue from tenant for the cost of water utilities. Cable Utility Revenue [Member] Cable Utility Revenue [Member] Reimbursement revenue from tenant for the cost of cable utilities. Accrued Liabilities [Member] Accrued Liabilities [Member] Post Massachusetts Avenue Post Massachusetts Avenue [Member] Post Massachusetts Avenue [Member] Real Estate Technology Ventures, L.P. [Member] Real Estate Technology Ventures, L.P. [Member] Real Estate Technology Ventures, L.P. [Member] Development Properties Retail Retail [Member] Commercial Properties Expected Costs Expected Costs [Member] Expected Costs [Member] Costs Incurred to Date Costs Incurred to Date [Member] Costs Incurred to Date [Member] Limited Partner Capital Contribution, Future Obligation [Member] Limited Partner Capital Contribution, Future Obligation [Member] Limited Partner Capital Contribution, Future Obligation [Member] Real Estate Properties Real Estate Properties [Line Items] Net Cash Provided by (Used in) Operating Activities Percentage Of Rental Revenue And Other Income From Leasing Of Apartment Homes Percentage Of Rental Revenue And Other Income From Leasing Of Apartment Homes Percentage of our total property revenues and total non-property income from leasing of apartment homes, excluding income on deferred compensation plans. Percentage of Rental Revenue and Other Income From Non-leasing Activities Percentage of Rental Revenue and Other Income From Non-leasing Activities Percentage of Rental Revenue and Other Income From Non-leasing Activities Capitalized Development Costs, Period Capitalized Development Costs, Period Capitalized costs incurred during the period for development properties including capitalized interest, capitalized salaries, and capitalized real estate taxes. Dividends Payable Dividends Payable Accrued Real Estate Taxes Accrued Real Estate Taxes Accrued Real Estate Taxes Unearned Income Unearned Income Unearned Income Loss Contingency Accrual Loss Contingency Accrual Loss Contingency, Loss in Period Loss Contingency, Loss in Period Security Deposit Liability Security Deposit Liability Interest Payable Interest Payable General partners' capital account, units outstanding General Partners' Capital Account, Units Outstanding Limited Liability Company (LLC) or Limited Partnership (LP), Managing Member or General Partner, Ownership Interest Limited Liability Company (LLC) or Limited Partnership (LP), Managing Member or General Partner, Ownership Interest Number of Real Estate Properties Number of Real Estate Properties Equity Method Investment, Ownership Percentage Equity Method Investment, Ownership Percentage Number of units under development community Number of units under development community Property Held for Development Development and capital improvements in progress Construction in Progress, Gross Buildings, Improvements, and Other Buildings, Improvements, and Other Amount before accumulated depreciation of building structures held for productive use including addition, improvement, or renovation to the structure, including, but not limited to, interior masonry, interior flooring, electrical, and plumbing, equipment commonly used in offices and stores that have no permanent connection to the structure of a building or utilities. Examples include, but are not limited to, desks, chairs, tables, and bookcases. Also includes amount of investment in certain other real estate investments not specifically identified elsewhere in the existing taxonomy. Percentage of ownership interests of all consolidated subsidiaries (percent) Percentage Of Ownership Interests Percentage Of Ownership Interests Advertising expenses Advertising Expense Estimated useful lives (years) Property, Plant and Equipment, Useful Life Total interest capitalized during period Lease Intangibles, Gross Real Estate Investment Property, at Cost Depreciation and amortization Real Estate Investments, Joint Ventures Real Estate Investments, Joint Ventures Land Land Accrued Liabilities Accrued Liabilities Net Cash Provided by (Used in) Investing Activities Net Cash Provided by (Used in) Financing Activities Restricted Cash and Cash Equivalents Restricted Cash and Cash Equivalents New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification Operating Lease, Right-of-Use Asset Operating Lease, Right-of-Use Asset Operating Lease, Liability Operating Lease, Liability Number of States in which Entity Operates Number of States in which Entity Operates Statement of Financial Position [Abstract] Assets: Assets [Abstract] Real estate investment property, at cost Less accumulated depreciation Real Estate Investment Property, Net Real Estate Investment Property, Net Undeveloped land Land Available for Development Investments in real estate joint ventures Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures Real estate assets, net Real Estate Assets Net Real Estate Assets, Net Cash and cash equivalents Other assets Other Assets Real Estate Held-for-sale Real Estate Held-for-sale Total assets Assets Liabilities and Equity [Abstract] Liabilities and Equity [Abstract] Liabilities and Capital [Abstract] Liabilities and Capital [Abstract] Liabilities and Capital [Abstract] Liabilities: Liabilities [Abstract] Unsecured notes payable Unsecured Debt Secured notes payable Secured Debt Accrued expenses and other liabilities Due to general partner Total liabilities Liabilities Redeemable units Temporary Equity, Carrying Amount, Including Portion Attributable to Noncontrolling Interests Capital [Abstract] Capital [Abstract] Preferred Stock, Liquidation Preference, Value Preferred Units, Preferred Partners' Capital Accounts General Partner: 113,844,267 and 113,643,166 OP Units outstanding as of December 31, 2018 and December 31, 2017, respectively General Partners' Capital Account Limited Partners: 4,111,301 and 4,191,586 OP Units outstanding as of December 31, 2018 and December 31, 2017, respectively Limited Partners' Capital Account Accumulated other comprehensive (loss) income Accumulated Other Comprehensive Income (Loss), Net of Tax Capital Capital Noncontrolling Interest in Joint Ventures Noncontrolling Interest in Joint Ventures Partners' Capital, Including Portion Attributable to Noncontrolling Interest Partners' Capital, Including Portion Attributable to Noncontrolling Interest Liabilities and capital Liabilities and Capital Liabilities and Capital Redeemable stock, shares/units issued and outstanding Temporary Equity, Shares Outstanding Consolidation and Basis of Presentation and Significant Accounting Policies [Abstract] Consolidation and Basis of Presentation and Significant Accounting Policies [Abstract] ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block] Schedule of Business Acquisitions, by Acquisition [Table Text Block] Schedule of Business Acquisitions, by Acquisition [Table Text Block] Disposal Groups, Including Discontinued Operations [Table Text Block] Disposal Groups, Including Discontinued Operations [Table Text Block] Legal Proceedings [Abstract] Note 12 — Legal Proceedings [Abstract] Legal Proceedings Disclosure [Table] Legal Proceedings Disclosure [Table] Legal Proceedings Disclosure [Table] Litigation Case [Axis] Litigation Case [Axis] Litigation Case [Domain] Litigation Case [Domain] Cleven Litigation Case [Member] Cleven Litigation Case [Member] Cleven Litigation Case [Member] Brown Litigation Case [Member] Brown Litigation Case [Member] Brown Litigation Case [Member] Legal Proceedings Legal Proceedings [Line Items] [Line Items] for Legal Proceedings Disclosure Loss Contingency, Estimate of Possible Loss Loss Contingency, Estimate of Possible Loss Operating Leases, Future Minimum Payments Due, Next Twelve Months Operating Leases, Future Minimum Payments Due, Next Twelve Months Operating Leases, Future Minimum Payments, Due in Two Years Operating Leases, Future Minimum Payments, Due in Two Years Operating Leases, Future Minimum Payments, Due in Three Years Operating Leases, Future Minimum Payments, Due in Three Years Operating Leases, Future Minimum Payments, Due in Four Years Operating Leases, Future Minimum Payments, Due in Four Years Operating Leases, Future Minimum Payments, Due in Five Years Operating Leases, Future Minimum Payments, Due in Five Years Operating Leases, Future Minimum Payments, Due Thereafter Operating Leases, Future Minimum Payments, Due Thereafter Operating Leases, Future Minimum Payments Due Operating Leases, Future Minimum Payments Due