Equity [Abstract] Nonvested Stock Activity Schedule of Nonvested Share Activity [Table Text Block] Summary of Shares Issued Under Employee Stock Purchase Plan Schedule of Share-based Compensation, Employee Stock Purchase Plan, Activity [Table Text Block] Statement of Financial Position [Abstract] ASSETS Assets [Abstract] Current assets: Assets, Current [Abstract] Cash Cash Receivables: Receivables, Net, Current [Abstract] Patient accounts receivable, less allowance for uncollectible accounts of $23,556 and $29,036, respectively Accounts Receivable, Net, Current Other receivables Other Receivables Amounts due from governmental entities Amounts Due From Governmental Entities Amounts expected to be reimbursed by governmental entities based on annual reports filed at the balance sheet date. Total receivables, net Receivables, Net, Current Prepaid income taxes Prepaid Taxes Prepaid expenses Prepaid Expense, Current Other current assets Other Assets, Current Total current assets Assets, Current Property, building and equipment, net of accumulated depreciation of $43,565 and $35,226, respectively Property, Plant and Equipment, Net Goodwill Goodwill Intangible assets, net of accumulated amortization of $13,041 and $10,968, respectively Intangible Assets, Net (Excluding Goodwill) Other assets Other Assets, Noncurrent Total assets Assets LIABILITIES AND STOCKHOLDERS' EQUITY Liabilities and Equity [Abstract] Current liabilities: Liabilities, Current [Abstract] Accounts payable and other accrued liabilities Accounts Payable and Other Accrued Liabilities, Current Salaries, wages and benefits payable Employee-related Liabilities, Current Self insurance reserve Self Insurance Reserve, Current Current portion of long-term debt Long-term Debt, Current Maturities Amounts due to governmental entities Amounts Due To Governmental Entities Amounts to be paid to governmental entities for payments received in excess of hospice cap limits and prior year costs report settlements. Income tax payable Taxes Payable, Current Total current liabilities Liabilities, Current Deferred income taxes Deferred Tax Liabilities, Net, Noncurrent Revolving credit facility Long-term Line of Credit, Noncurrent Long-term debt, less current portion Long-term Debt, Excluding Current Maturities Total liabilities Liabilities Noncontrolling interest-redeemable Redeemable Noncontrolling Interest, Equity, Carrying Amount Stockholders' equity: Stockholders' Equity Attributable to Parent [Abstract] LHC Group, Inc. stockholders' equity: Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Preferred stock – $0.01 par value: 5,000,000 shares authorized; none issued or outstanding Preferred Stock, Value, Outstanding Common stock - $0.01 par value: 40,000,000 shares authorized; 22,640,046 and 22,429,041 shares issued in 2017 and 2016, respectively Common Stock, Value, Outstanding Treasury stock - 4,890,504 and 4,828,679 shares at cost, respectively Treasury Stock, Value Additional paid-in capital Additional Paid in Capital, Common Stock Retained earnings Retained Earnings (Accumulated Deficit) Total LHC Group, Inc. stockholders' equity Stockholders' Equity Attributable to Parent Nonredeemable Noncontrolling Interest Nonredeemable Noncontrolling Interest Total stockholders' equity Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Total liabilities and stockholders' equity Liabilities and Equity Accounting Policies [Abstract] Health Care Organization, Revenue [Abstract] Concentration Risk [Table] Legal Entity [Axis] Legal Entity [Axis] Entity [Domain] Entity [Domain] Equity Joint Ventures [Member] Equity Joint Ventures [Member] Equity Joint Ventures [Member] Other Arrangements [Member] Other Arrangements [Member] [Domain] Other arrangements including license leasing arrangements and management services agreements. Consolidated Entities [Axis] Consolidated Entities [Axis] Consolidated Entities [Domain] Consolidated Entities [Domain] Wholly-owned Subsidiaries [Member] Subsidiaries [Member] Health Care organization, Revenue [Abstract] Concentration Risk [Line Items] Percentage of Net Service Revenue Revenue By Ownership Type Percentage of net service revenue by ownership type. Leases [Abstract] Statement [Table] Statement [Table] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Minimum [Member] Minimum [Member] Maximum [Member] Maximum [Member] Statement [Line Items] Statement [Line Items] Operating Leases, Rent Expense Operating Leases, Rent Expense Operating Lease Period Minimum Operating Lease Period Minimum Operating lease period minimum. Operating Lease Period Maximum Operating Lease Period Maximum Operating lease period maximum. Minimum Miles Required per Year for the Fleet Lease Minimum Miles Required per Year for the Fleet Lease Minimum Miles Required per Year for the Fleet Lease Minimum Period of the Fleet Lease Minimum Period of the Fleet Lease Minimum Period of the Fleet Lease Fleet Lease's Expense Fleet Lease's Expense Fleet Lease's Expense Nonvested Shares Outstanding, Number of Shares, Beginning Balance Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Granted, Number of Shares Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Vested, Number of Shares Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Forfeited, Number of Shares Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Nonvested Shares Outstanding, Number of Shares, Ending Balance Nonvested Shares Outstanding, Weighted Average Grant Date Fair Value, Beginning Balance Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Grants, 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 Vested, 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 Forfeited, 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 Nonvested Shares Outstanding, Weighted Average Grant Date Fair Value, Ending Balance Use of Estimates Use of Estimates, Policy [Policy Text Block] Principles of Consolidation Consolidation, Policy [Policy Text Block] Revenue Recognition Revenue Recognition, Policy [Policy Text Block] Account Receivable and Allowances for Uncollectible Accounts Receivables, Policy [Policy Text Block] Business Combinations Policy Business Combinations Policy [Policy Text Block] Goodwill and Intangible Assets Goodwill and Intangible Assets, Policy [Policy Text Block] Due To And Due From Governmental Entities Due To And Due From Governmental Entities Policy [Text Block] Disclosure of accounting policy for due to/from governmental entities. Property, Plant and Equipment Property, Plant and Equipment, Policy [Policy Text Block] Noncontrolling Interest Noncontrolling Interest Policy [Text Block] Disclosure of accounting policy for noncontrolling interest - nonredeemable and noncontrolling interest- redeemable. Share-based Compensation, Option and Incentive Plans Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block] Earnings Per Share Earnings Per Share, Policy [Policy Text Block] Recently Adopted and Issued Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Business Combinations [Abstract] Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Business Acquisition [Axis] Business Acquisition [Axis] Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] 2017 Acquisitions [Member] 2017 Acquisitions [Member] 2017 Acquisitions [Member] 2016 Acquisitions [Member] Halycon Healthcare, LLC and Other Acquisitions [Member] Halycon Healthcare, LLC and Other Acquisitions [Member] Segments [Axis] Segments [Axis] Segments [Domain] Segments [Domain] Community-Based Services [Member] Community-Based Services [Member] Community-Based Services [Member] Home Health Reporting Unit [Member] Home Health Reporting Unit [Member] Home Health Reporting Unit [Member] Community Based Reporting Unit [Member] Community Based Reporting Unit [Member] Community Based Reporting Unit [Member] Hospice Reporting Unit [Member] Hospice Reporting Unit [Member] Hospice Reporting Unit [Member] Inpatient Hospice [Member] Inpatient Hospice [Member] Inpatient Hospice [Member] LTACH Agency [Member] LTACH Agency [Member] LTACH Agency [Member] Pharmacy [Member] Pharmacy [Member] Pharmacy [Member] Business Acquisition [Line Items] Business Acquisition [Line Items] Intangible Assets, Net (Excluding Goodwill) Number of entities acquired Number of Businesses Acquired Goodwill Current Year Acquisition Total purchase price for acquisitions Aggregate Purchase Price Of Acquisitions Aggregate purchase price of acquisitions. Cash paid for acquisitions Payments to Acquire Businesses, Gross Noncompete agreement estimated useful life Noncompete Agreement, Useful Life The estimated useful life for noncompete agreements classified as intangible assets. Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract] 2018 Operating Leases, Future Minimum Payments Due, Next Twelve Months 2019 Operating Leases, Future Minimum Payments, Due in Two Years 2020 Operating Leases, Future Minimum Payments, Due in Three Years 2021 Operating Leases, Future Minimum Payments, Due in Four Years 2022 Operating Leases, Future Minimum Payments, Due in Five Years Thereafter Operating Leases, Future Minimum Payments, Due Thereafter Operating Leases, Future Minimum Payments Due, Total Operating Leases, Future Minimum Payments Due Income Tax Disclosure [Abstract] Deferred Tax Assets and Liabilities [Table Text Block] Schedule of Deferred Tax Assets and Liabilities [Table Text Block] Income Tax Expense (benefit) from Continuing operations, Less Noncontrolling Interest Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] Statutory Rate and Provisions for Income Taxes Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Total amounts of Unrecognized Tax Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block] Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Commitments and Contingencies Disclosure [Abstract] Litigation Settlement, Amount From Government Payors Other Assets, Amount From Government Payors Other Assets, Amount From Government Payors Joint Venture Buy Sell Option Period Joint Venture Buy Sell Option Period Time frame in which the other joint venture party must either purchase all of the exercising member's membership interests or sell to the exercising member all of the non-exercising member's membership interests in the exercise of a joint venture buy/sell option. Debt Disclosure [Abstract] Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Variable Rate [Axis] Variable Rate [Axis] Variable Rate [Domain] Variable Rate [Domain] Debt Instrument, Redemption, Period [Axis] Debt Instrument, Redemption, Period [Axis] Debt Instrument, Redemption, Period [Domain] Debt Instrument, Redemption, Period [Domain] Debt Instrument [Line Items] Debt Instrument [Line Items] 2018 Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months 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 Total Long-term Debt Statement of Stockholders' Equity [Abstract] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Common Stock [Member] Common Stock [Member] Treasury [Member] Treasury Stock [Member] Additional Paid-in Capital [Member] Additional Paid-in Capital [Member] Retained Earnings [Member] Retained Earnings [Member] Non-controlling Interest Non Redeemable [Member] Noncontrolling Interest [Member] Total Equity [Member] Net Equity [Member] Net Equity [Member] Non-Controlling Interest - Redeemable [Member] Non Controlling Interest Redeemable [Member] Non controlling interest redeemable. Net Income (Loss) [Member] Net Income Loss [Member] Net Income Loss [Member] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Balances, Amount Balances, Shares Shares, Issued Net Income Equity Profit Loss The consolidated profit or loss for the period, net of income taxes, excluding the portion attributable to noncontrolling interest - redeemable shown in the mezzanine section of the balance sheet. Income from continuing operations Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Noncontrolling interest acquired Noncontrolling Interest, Increase from Business Combination Noncontrolling interest distributions Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders Stock options exercised, Shares Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Stock options exercised Stock Issued During Period, Value, Stock Options Exercised Purchase of additional controlling interest Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests Sale of noncontrolling interest Noncontrolling Interest, Increase from Sale of Parent Equity Interest Nonvested Stock Compensation Adjustments to Additional Paid in Capital, Share-based Compensation, Restricted Stock Unit or Restricted Stock Award, Requisite Service Period Recognition Issuance of vested stock Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures Issuance of vested stock, shares Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures Treasury shares redeemed to pay income tax Adjustments Related to Tax Withholding for Share-based Compensation Treasury shares redeemed to pay income tax, shares Shares Paid for Tax Withholding for Share Based Compensation Excess tax benefits-vesting nonvested stock Adjustment to Additional Paid in Capital, Income Tax Effect from Share-based Compensation, Net Issuance of common stock under Employee Stock Purchase Plan Stock Issued During Period, Value, Employee Stock Purchase Plan Shares Issued during Period (Shares) Stock Issued During Period, Shares, Employee Stock Purchase Plans Balances, Amount Balances, Shares Ending Balance, Treasury Shares Treasury Stock, Shares Risks and Uncertainties [Abstract] Concentration of Risk Concentration Risk Disclosure [Text Block] Income Statement [Abstract] Net service revenue Health Care Organization, Patient Service Revenue Cost of service revenue Cost of Services Gross margin Gross Profit Provision for bad debts Provision for Doubtful Accounts General and administrative expenses General and Administrative Expense Impairment of intangibles and other Asset Impairment Charges Loss on disposal of assets Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property Operating income Operating Income (Loss) Interest expense Interest Expense Non-operating income Nonoperating Income (Expense) Income from continuing operations before income taxes and noncontrolling interests Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest Income tax expense Income Tax Expense (Benefit) Income from continuing operations Less net income attributable to noncontrolling interests Net Income (Loss) Attributable to Noncontrolling Interest Net Income Attributable to LHC Group Inc.'s Common Stockholders Net Income (Loss) Available to Common Stockholders, Basic Earnings Per Share - Basic: Earnings Per Share, Basic [Abstract] Net income attributable to LHC Group, Inc.' common stockholders Earnings Per Share, Basic Earnings Per Share - Diluted: Earnings Per Share, Diluted [Abstract] Net income attributable to LHC Group, Inc.' common stockholders Earnings Per Share, Diluted Weighted Average Shares Outstanding: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Basic Weighted Average Number of Shares Outstanding, Basic Diluted Weighted Average Number of Shares Outstanding, Diluted Schedule of Future Minimum Rental Payments for Operating Leases Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block] Schedule Of Purchase Price Allocations Table Schedule of Business Acquisitions, by Acquisition [Table Text Block] Pro Forma Consolidated Income Statement Information Business Acquisition, Pro Forma Information [Table Text Block] Valuation and Qualifying Accounts [Abstract] Allowance for Doubtful Accounts Receivable [Roll Forward] Allowance for Doubtful Accounts Receivable [Roll Forward] Beginning balance Allowance for Doubtful Accounts Receivable, Current Additions Deductions Allowance for Doubtful Accounts Receivable, Recoveries Ending balance Quarterly Financial Information Disclosure [Abstract] Unaudited Summarized Quarterly Financial Information Quarterly Financial Information [Text Block] Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Current: Current Income Tax Expense (Benefit), Continuing Operations [Abstract] Federal Current Federal Tax Expense (Benefit) State Current State and Local Tax Expense (Benefit) Total Current Current Income Tax Expense (Benefit) Deferred: Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract] Federal Deferred Federal Income Tax Expense (Benefit) State Deferred State and Local Income Tax Expense (Benefit) Total Deferred Deferred Income Tax Expense Deferred Income Tax Expense Total Income Tax Expense Significant Accounting Policies [Table] Significant Accounting Policies [Table] Significant Accounting Policies [Table] Health Care Organization, Revenue Sources [Axis] Health Care Organization, Revenue Sources [Axis] Health Care Organization, Revenue Sources [Domain] Health Care Organization, Revenue Sources [Domain] Medicare [Member] Medicare [Member] Medicare. Medicaid [Member] Medicaid [Member] Medicaid. Other [Member] Other Payor [Member] Other payor. Significant Accounting Policies [Line Items] Significant Accounting Policies [Line Items] Significant Accounting Policies [Line Items] Percentage of net service revenue Revenue By Payor Percentage of net service revenue by payor category. Gross margin Net Income Attributable to LHC Group Inc.'s Common Stockholders Net income attributable to LHC Group, Inc.' common stockholders Net income attributable to LHC Group, Inc.' common stockholders Segment Reporting [Abstract] Segment Information Segment Reporting Disclosure [Text Block] Number Of Service Providers Number Of Service Providers The number of locations the entity operates as of the balance sheet date. Number of States in which Entity Operates Number of States in which Entity Operates Business Acquisition, Pro Forma Information [Abstract] Net Service Revenue Business Acquisition, Pro Forma Revenue Operating income Business Acquisitions Pro Forma Operating Income Loss The pro forma operating income (loss) for the period as if the business combination or combinations had been completed at the beginning of the period. Net income Business Acquisition, Pro Forma Net Income (Loss) Business Acquisition, Pro Forma Earnings Per Share, Diluted Business Acquisition, Pro Forma Earnings Per Share, Diluted Business Acquisition, Pro Forma Earnings Per Share, Basic Business Acquisition, Pro Forma Earnings Per Share, Basic Federal Funds Rate [Member] Federal Funds Rate [Member] Federal Funds Rate [Member] Eurodollar [Member] Eurodollar [Member] Base Rate [Member] Base Rate [Member] Line of Credit Facility, Maximum Borrowing Capacity Line of Credit Facility, Maximum Borrowing Capacity Letters Of Credit Sublimit Letters Of Credit Sublimit Letters Of Credit Sublimit Line of Credit Facility, Expiration Date Line of Credit Facility, Expiration Date Debt Instrument, Basis Spread on Variable Rate Debt Instrument, Basis Spread on Variable Rate Number Of Outstanding Debt Instrument Number Of Outstanding Debt Instrument Maximum number of SwingLine loans the Company can have outstanding at the same time. Percentage of credit fee on unused amount Line of Credit Facility, Unused Capacity, Commitment Fee Percentage Debt Instrument, Interest Rate, Effective Percentage Debt Instrument, Interest Rate, Effective Percentage Line of credit facility drawn Letter of credit outstanding Letters of Credit Outstanding, Amount Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Home-based services [Member] Home Based Services [Member] Home Based Services [Member] Facility-based services [Member] Facility Based Services [Member] Facility Based Services [Member] Hospice Entity [Member] Hospice Entity [Member] Hospice entity. Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Segment Reporting, Disclosure of Entity's Reportable Segments [Abstract] Segment Reporting, Disclosure of Entity's Reportable Segments [Abstract] Loss (gain) on disposal of assets Gain (Loss) on Disposition of Property Plant Equipment Interest expense Total assets Percentage Of Net Service Revenue Accounted By Facility Percentage Of Net Service Revenue Accounted By Facility Percentage of net service revenue generated from Louisiana, Mississippi, Alabama, Arkansas, and Tennessee facilities. Allowance for Uncollectible Accounts Schedule of Valuation and Qualifying Accounts Disclosure [Text Block] Subsequent Event [Abstract] Subsequent Event [Abstract] Proposed Merger with Almost Family Subsequent Events [Text Block] Schedule of Segment Reporting Information, by Segment [Table Text Block] Schedule of Segment Reporting Information, by Segment [Table Text Block] Goodwill and Intangible Assets Disclosure [Abstract] 2018 Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months 2019 Finite-Lived Intangible Assets, Amortization Expense, Year Two 2020 Finite-Lived Intangible Assets, Amortization Expense, Year Three 2021 Finite-Lived Intangible Assets, Amortization Expense, Year Four 2022 Finite-Lived Intangible Assets, Amortization Expense, Year Five Total Future Finite Lived Intangible Assets Amortization Five Year Expense Total Total amortization expense for finite-lived intangible assets for the next five years subsequent to current fiscal year end. Schedule of Indefinite-Lived Intangible Assets [Table] Schedule of Indefinite-Lived Intangible Assets [Table] Indefinite-lived Intangible Assets [Axis] Indefinite-lived Intangible Assets [Axis] Indefinite-lived Intangible Assets, Major Class Name [Domain] Indefinite-lived Intangible Assets, Major Class Name [Domain] Licensing Agreements [Member] Licensing Agreements [Member] 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] Trade Names [Member] Trade Names [Member] Noncompete Agreements [Member] Noncompete Agreements [Member] Hospice Entity [Member] Indefinite-lived Intangible Assets [Line Items] Indefinite-lived Intangible Assets [Line Items] Disposal Group, Including Discontinued Operation, Goodwill Disposal Group, Including Discontinued Operation, Goodwill Amortization Amortization Fair Value Disclosures [Abstract] Fair Value of Financial Instruments Fair Value Disclosures [Text Block] Deferred tax assets: Components of Deferred Tax Assets [Abstract] Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Allowance for Doubtful Accounts Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Allowance for Doubtful Accounts Accrued employee benefits Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Employee Benefits Stock compensation Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost Accrued self-insurance Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Self Insurance Acquisition costs Acquisition Costs, Cumulative Net operating loss carry forward Deferred Tax Assets, Operating Loss Carryforwards Intangible asset impairment Intangible Asset Impairment Amount of deferred tax asset due to impairment of intangible asset that will be amortized over the estimated tax useful life. Uncertain tax position-state tax portion Deferred Tax Assets, State Taxes Uncertain tax position-interest expense Deferred Tax Assets, Interest Expense Amount before allocation allowances of deferred tax asset attributable to deductible temporary differences from interest expense. Other Deferred Tax Assets, Other Capital loss carryforward Deferred Tax Assets, Capital Loss Carryforwards Valuation allowance Deferred Tax Assets, Valuation Allowance Deferred tax assets Deferred Tax Assets, Net of Valuation Allowance Deferred tax liabilities: Components of Deferred Tax Liabilities [Abstract] Amortization of intangible assets Deferred Tax Liabilities Amortization Of Intangible Assets Amortization of intangible assets. Tax depreciation in excess of book depreciation Deferred Tax Liabilities, Property, Plant and Equipment Prepaid expenses Deferred Tax Liabilities, Prepaid Expenses Non-accrual experience accounting method Non Accrual Experience Accounting Method Non-accrual experience accounting method. Deferred tax liabilities Deferred Tax Liabilities, Gross Net deferred tax liability Deferred Tax Liabilities, Net Operating Cash Flows, Direct Method [Abstract] Operating activities Net Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net income to net cash provided by (used in) operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Depreciation and Amortization Expense Depreciation, Depletion and Amortization, Nonproduction Stock-based compensation expense Share-based Compensation Deferred income taxes Deferred Income Tax Expense (Benefit) Loss on disposal of assets Impairment of intangibles and other Other Asset Impairment Charges Changes in operating assets and liabilities, net of acquisitions: Increase (Decrease) in Operating Capital [Abstract] Receivables Increase (Decrease) in Accounts Receivable Prepaid expenses and other assets Increase (Decrease) in Prepaid Expense and Other Assets Prepaid income taxes Increase (Decrease) in Prepaid Taxes Accounts payable and accrued expenses Increase (Decrease) in Accounts Payable and Accrued Liabilities Income tax payable Increase (Decrease) in Income Taxes Payable Net amounts due to/from governmental entities lhcg_IncreaseDecreaseInNetAmountsDueToFromGovernmentalEntities Increase (decrease) in net amounts due to/from governmental entities. Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities Investing activities Net Cash Provided by (Used in) Investing Activities [Abstract] Cash paid for acquisitions, primarily goodwill and intangible assets Purchases of property, building and equipment Payments to Acquire Property, Plant, and Equipment Advanced payments on acquisitions Other Payments to Acquire Businesses Goodwill related to prior year adjustments Payments for (Proceeds from) Other Investing Activities Net cash (used in) investing activities Net Cash Provided by (Used in) Investing Activities Financing activities Net Cash Provided by (Used in) Financing Activities [Abstract] Proceeds from line of credit Proceeds from Lines of Credit Payments on line of credit Repayments of Lines of Credit Excess tax benefits from vesting of stock awards Excess Tax Benefit from Share-based Compensation, Financing Activities Proceeds from employee stock purchase plan Proceeds from Stock Plans Payments on debt Proceeds from (Repayments of) Notes Payable Noncontrolling interest distributions Payments of Ordinary Dividends, Noncontrolling Interest Purchase of additional controlling interest Payments to Noncontrolling Interests Sale of noncontrolling interest Proceeds from Noncontrolling Interests Withholding taxes paid on stock-based compensation Payments Related to Tax Withholding for Share-based Compensation Proceeds from exercise of stock options Proceeds from Stock Options Exercised Net cash (used in) provided by financing activities Net Cash Provided by (Used in) Financing Activities Change in cash Cash and Cash Equivalents, Period Increase (Decrease) Cash at beginning of period Cash at end of period Supplemental disclosures of cash flow information Supplemental Cash Flow Information [Abstract] Interest paid Interest Paid, Net Income taxes paid Income Taxes Paid, Net Supplemental Cash Flow Elements [Abstract] Treasury Stock [Member] Disclosure of Compensation Related Costs, Share-based Payments [Abstract] Participants contribution Defined Contribution Plan, Maximum Annual Contributions Per Employee, Amount Employer contribution Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent Employer contribution Defined Contribution Plan, Employers Matching Contribution, Annual Vesting Percentage Initial vesting period of employer contribution Defined Contribution Plan Initial Vesting Period Defined contribution plan initial vesting period. Full vesting period of employer contribution Defined Contribution Plan Full Vesting Period Defined contribution plan full vesting period. Contribution expenses Defined Contribution Plan, Employer Discretionary Contribution Amount Unaudited Quarterly Results of Operations Quarterly Financial Information [Table Text Block] Debt Debt Disclosure [Text Block] Unrecognized Tax Benefits, Income Tax Penalties Expense, Increase Unrecognized Tax Benefits, Income Tax Penalties Expense, Increase Unrecognized Tax Benefits, Income Tax Penalties Expense, Increase Unrecognized Tax Benefits, Income Tax Penalties Expense Unrecognized Tax Benefits, Income Tax Penalties Expense Tax Cuts And Jobs Act Of 2017, Incomplete Accounting, Change In Tax Rate, Deferred Tax Asset, Provisional Income Tax Expense Tax Cuts And Jobs Act Of 2017, Change In Tax Rate, Deferred Tax Asset, Provisional Income Tax Expense Tax Cuts And Jobs Act Of 2017, Change In Tax Rate, Deferred Tax Asset, Provisional Income Tax Expense Unrecognized Tax Benefits Unrecognized Tax Benefits Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Percent Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Percent Unrecognized Tax Benefits that Would Impact Effective Tax Rate Unrecognized Tax Benefits that Would Impact Effective Tax Rate Allowance for Credit Losses on Financing Receivables Allowance for Credit Losses on Financing Receivables [Table Text Block] Text Block [Abstract] Defined Contribution Plan Disclosure [Text Block] Defined Contribution Plan Disclosure [Text Block] The entire disclosure related to Company's defined contribution plan. Schedule of Maturities of Long-term Debt [Table Text Block] Schedule of Maturities of Long-term Debt [Table Text Block] Goodwill And Other Intangible Assets [Table] Goodwill And Other Intangible Assets [Table] Goodwill And Other Intangible Assets [Table] Facility Based Reporting Unit [Member] Facility Based Reporting Unit [Member] Facility Based Reporting Unit [Member] Goodwill And Other Intangible Assets [Line Items] Goodwill And Other Intangible Assets [Line Items] Goodwill And Other Intangible Assets [Line Items] Goodwill [Roll Forward] Goodwill [Roll Forward] Balance at beginning of period Goodwill from acquisitions Goodwill, Acquired During Period Goodwill related to noncontrolling interests Business Acquisition Purchase Price Allocation Noncontrolling Goodwill Amount of goodwill arising from a business combination that is attributable to the noncontrolling interest in the acquiree. Goodwill related to impairment on disposals Goodwill, Written off Related to Sale of Business Unit Goodwill related to prior period net working capital adjustments Goodwill Related to Prior Period Net Working Capital Adjustments Amount of increase (decrease) from adjustments after acquisition date under the acquisition method of accounting of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Goodwill related to prior year adjustments Goodwill, Purchase Accounting Adjustments Balance at end of period Schedule of Acquired Finite-Lived Intangible Asset by Major Class [Table] Schedule of Acquired Finite-Lived Intangible Asset by Major Class [Table] Other Identifiable Intangible Assets [Member] Other Identifiable Intangible Assets [Member] Other identifiable intangible assets. Acquired Finite-Lived Intangible Assets [Line Items] Acquired Finite-Lived Intangible Assets [Line Items] Gross Payments to Acquire Businesses Gross Payments to Acquire Businesses Gross payments to acquire businesses. Recognized amounts of identifiable assets acquired and liabilities assumed Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net [Abstract] Recognized amounts of identifiable assets acquired and liabilities assumed Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill [Abstract] Patient account receivable Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables Certificates of needs/licenses Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Indefinite-Lived Intangible Assets Business acquisition, purchase price allocation, Intangible Assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles Other assets and (liabilities), net Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Assets (Liabilities) Net Amount recognized as of the acquisition date for other assets, net liabilities, not separately stated. Total identifiable assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net Noncontrolling interest Business Combination, Acquisition of Less than 100 Percent, Noncontrolling Interest, Fair Value Goodwill, including noncontrolling interest of $34,409 Goodwill Including Noncontrolling Interest Goodwill Including Noncontrolling Interest Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward] Increase Decrease in Unrecognized Tax Benefits [Abstract] Increase Decrease in Unrecognized Tax Benefits [Abstract] Increase Decrease in Unrecognized Tax Benefits as Result of Abstract Increases (decreases) in unrecognized tax benefits as a result of: Increases Decreases In Unrecognized Tax Benefits As Result Of [Abstract] Increases Decreases in Unrecognized Tax Benefits as Result of [Abstract] Tax positions taken during the current period Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions Schedule of Goodwill Schedule of Goodwill [Table Text Block] Schedule Of Acquired Finite And Indefinite Lived Intangible Assets By Major Class Table Schedule Of Acquired Finite And Indefinite Lived Intangible Assets By Major Class Table [Table Text Block] Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance arranged by finite life and indefinite life category, by either major class or business segment. Schedule of Intangible Asset Future Amortization Expense Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] Percentage of Net Service Revenue Earned By Type Of Ownership Or Relationship With Operating Entity Schedule Of Service Revenue Earned By Type Of Ownership Or Relationship With Operating Entity Table [Table Text Block] Tabular disclosure of the percentage of net service revenue earned by type of ownership or relationship with operating entity. Percentage Of Net Service Revenue Earned By Category Of Payor Tabular Disclosure Of Percentage Of Net Service Revenue Earned By Category Of Payor Table [Table Text Block] Tabular disclosure of percentage of net service revenue earned by category of payor. Property, Plant and Equipment Property, Plant and Equipment [Table Text Block] Shares Used in Computation of Basic and Diluted per Share Information Schedule of Weighted Average Number of Shares [Table Text Block] Income Tax Income Tax Disclosure [Text Block] Document And Entity Information [Abstract] Document And Entity Information [Abstract] Document Information [Table] Document Information [Table] Document Information, Document [Axis] Document Information, Document [Axis] Document [Domain] Document [Domain] Document Information [Line Items] Document Information [Line Items] Document Type Document Type Amendment Flag Amendment Flag Document Period End Date Document Period End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Trading Symbol Trading Symbol 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 Well-known Seasoned Issuer Entity Well-known Seasoned Issuer Entity Current Reporting Status Entity Current Reporting Status Entity Voluntary Filers Entity Voluntary Filers Entity Filer Category Entity Filer Category Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Entity Public Float Entity Public Float Summary Of Significant Accounting Policies [Table] Summary Of Significant Accounting Policies [Table] Summary Of Significant Accounting Policies [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] Building [Member] Building [Member] Transportation, Furniture And Other Equipment [Member] Transportation Furniture And Other Equipment [Member] Transportation, Furniture And Other Equipment [Member] Medicare Cap Period [Axis] Medicare Cap Period [Axis] Medicare Cap Period [Axis] Medicare Cap Period [Domain] Medicare Cap Period [Domain] Medicare Cap Period [Domain] Summary Of Significant Accounting Policies [Line Items] Summary Of Significant Accounting Policies [Line Items] Summary Of Significant Accounting Policies [Line Items] License Leasing Arrangements License Leasing Ownership The Company's percentage of ownership interest in license leasing arrangements. Selected Medicare home health resource group Selected Number of Medicare Home Health Resource Groups Selected Number of Medicare Home Health Resource Groups Number of Medicare home health resource groups Number Of Medicare Home Health Resource Groups Number of Medicare home health resource groups. Number of days from date RAP paid to submit final Medicare bill Delivering Period For Prospective Medicare Payment Number of days delivering for prospective Medicare payment. Low utilization adjustment visits Minimum Number Of Visits For Low Utilization Adjustment Number of visits at which low utilization adjustment is no longer applicable. Minimum percentage of Medicare reimbursement from inpatient care services that subjects individual programs to inpatient cap Percentage Subject To Inpatient Cap Minimum percentage of Medicare reimbursement from inpatient care services that subjects individual programs to inpatient cap. Determination period for hospice Medicare inpatient reimbursement cap Determination Period For Hospice Medicare Inpatient Reimbursement Cap Determination period ending October 31 of each year for hospice Medicare inpatient reimbursement cap. Medicare credit risk for accounts receivable Medicare Credit Risk For Accounts Receivable Percentage of patient accounts receivable attributable to Medicare at balance sheet date. Reimbursement for initial episode of care Reimbursement For Initial Episode Of Care Percentage of estimated reimbursement submitted on RAP for initial episode at start of care. Number of days from start of episode to submit final Medicare bill Period From Start Of Episode To Submit Final Medicare Bill Number of days from start of episode to submit final Medicare bill. Reimbursement for subsequent episodes of care Reimbursement For Subsequent Episodes Of Care Percentage of estimated reimbursement submitted on RAP for subsequent episodes of care contiguous with the first episode for a particular patient. Loss on impairment of intangible assets Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill) Intangible asset estimated useful life Finite-Lived Intangible Asset, Useful Life Estimated useful lives Property, Plant and Equipment, Useful Life Depreciation expense Depreciation, Depletion and Amortization Selected Hospice, Periodic Rate Used to Calculate Revenue Selected Hospice, Periodic Rate Used to Calculate Revenue Selected Hospice, Periodic Rate Used to Calculate Revenue Number of Hospice, Periodic Rates Used to Calculate Revenue Number of Hospice, Periodic Rates Used to Calculate Revenue Number of Hospice, Periodic Rates Used to Calculate Revenue Excess tax benefits, amount Effective Income Tax Rate Reconciliation, Share-based Compensation, Excess Tax Benefits, Amount Effective Income Tax Rate Reconciliation, Share-based Compensation, Excess Tax Benefits, Amount Schedule Of Acquired Finite And Indefinite Lived Intangible Asset By Major Class [Table] Schedule Of Acquired Finite And Indefinite Lived Intangible Asset By Major Class [Table] Schedule Of Acquired Finite And Indefinite Lived Intangible Asset By Major Class [Table] Finite and Indefinite Lived Intangible Assets [Line Items] Finite And Indefinite Lived Intangible Assets [Line Items] Finite And Indefinite Lived Intangible Assets [Line Items] Indefinite-lived assets, carrying amount Indefinite-Lived Intangible Assets (Excluding Goodwill) Definite-lived assets, gross carrying amount Finite-Lived Intangible Assets, Gross Intangible assets, gross carrying amount Intangible Assets, Gross (Excluding Goodwill) Definite-lived assets, accumulated amortization Finite-Lived Intangible Assets, Accumulated Amortization Intangible assets, accumulated amortization ending balance Amortization of Intangible Assets Definite-lived assets, net carrying amount Finite-Lived Intangible Assets, Net Intangible assets, net carrying amount Weighted average number of shares outstanding for basic per share calculation Effect of dilutive potential shares: Dilutive Securities, Effect on Basic Earnings Per Share [Abstract] Options Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements Nonvested Stock Awards Nonvested Stock Awards Nonvested stock awards. Weighted Average Number of Shares Outstanding, Diluted (shares) Antidilutive shares Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Effective Income Tax Rate Reconciliation, Percent [Abstract] Federal Statutory Tax Rate Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent State Income Taxes, net of federal benefit Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent Nondeductible Expense Effective Income Tax Rate Reconciliation, Nondeductible Expense, Percent Uncertain tax position Effective Income Tax Rate Reconciliation, Tax Contingency, Other, Percent TCJA Enactment Excess Tax Benefit Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Percent Credits and other Effective Income Tax Rate Reconciliation, Other Adjustments, Percent Effective Tax Rate Effective Income Tax Rate Reconciliation, Percent Leases Leases of Lessee Disclosure [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] Employee [Member] Employee [Member] Employee [Member] Title of Individual [Axis] Title of Individual [Axis] Relationship to Entity [Domain] Relationship to Entity [Domain] Director [Member] Director [Member] New Director [Member] New Director [Member] Person in his first year of serving on the Board of Directors. Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Par value of common stock repurchased Common Stock, Par or Stated Value Per Share Common stock reserved for issuance 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 Available for Grant Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant Vesting period of non-vested shares Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Nonvested stock grants to employees Nonvested Stock Grants To Employees Number of shares issued during the period to employees related to Restricted stock awards. Non vested stock grants to Independent director Nonvested Stock Grants To Independent Directors Number of shares issued during the period to independent directors. Total unrecognized compensation cost related to nonvested shares of common stock granted Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized Weighted average period of cost recognized Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition Total fair value of shares of common stock vested Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value Compensation expense related to nonvested stock grants Employee Benefits and Share-based Compensation Price of shares issued under Employee Stock Purchase Plan as a percentage of FMV Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price of Common Stock, Percent Number of shares reserved for the Employee Stock Purchase Plan Number Of Shares Reserved For Employee Stock Purchase Plan Number of shares reserved for the Employee Stock Purchase Plan. Shares authorized for issuance under Employee Stock Purchase Plan Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized Shares redeemed to satisfy personal tax obligations Subsequent Events [Abstract] Subsequent Event [Table] Subsequent Event [Table] Related Party [Axis] Related Party [Axis] Related Party [Domain] Related Party [Domain] Almost Family [Member] Almost Family [Member] Almost Family [Member] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Subsequent Event [Member] Subsequent Event [Member] Subsequent Event [Line Items] Subsequent Event [Line Items] Equity interest issued or issuable, number of shares Business Acquisition, Equity Interest Issued or Issuable, Number of Shares LHCG Stockholder Ownership LHCGStockholderOwnership LHCG Stockholder Ownership AFAM Stockholder Ownership AFAMStockholderOwnership AFAM Stockholder Ownership Contingent termination fee Business Combination, Contingent Termination Fee Business Combination, Contingent Termination Fee Contingent termination fee by parties Business Combination, Contingent Termination Fee by parties Business Combination, Contingent Termination Fee by parties. Goodwill and Other Intangibles, Net Goodwill and Intangible Assets Disclosure [Text Block] Patient accounts receivable, allowance for uncollectible accounts Property, building and equipment, accumulated depreciation Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Intangible assets, accumulated amortization Common stock, par value Common stock, shares authorized Common Stock, Shares Authorized Common stock, shares issued Common Stock, Shares, Issued Treasury stock at cost, shares Preferred stock, par value Preferred Stock, Par or Stated Value Per Share Preferred stock, shares authorized Preferred Stock, Shares Authorized Preferred stock, shares issued Preferred Stock, Shares Issued Preferred stock, shares outstanding Preferred Stock, Shares Outstanding Acquisitions and Joint Ventures Business Combination Disclosure [Text Block] Shares Available, Beginning Balance Shares Available Under Employee Stock Purchase Plan Shares available under employee stock purchase plan. Shares Available, Ending Balance Shares Issued during Period (per Share Price) Price Of Share Issued Under Employee Stock Purchase Plan Weighted average per share price for shares issued during the period as a result of the employee stock purchase plan. Stockholders' Equity Note Disclosure [Text Block] Stockholders' Equity Note Disclosure [Text Block] Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] Regulatory Assets [Abstract] Regulatory Assets [Abstract] Property Plant And Equipment Estimated Useful Lives [Table] Property Plant And Equipment Estimated Useful Lives [Table] Property Plant And Equipment Estimated Useful Lives [Table] Land [Member] Land [Member] Building and improvements [Member] Building and Building Improvements [Member] Transportation equipment [Member] Transportation Equipment [Member] Fixed equipment [Member] Equipment [Member] Office furniture and medical equipment [Member] Office Furniture Medical And Transport Equipment [Member] Office furniture and medical equipment. Other Long Term Assets [Line Items] Other Long Term Assets [Line Items] Other Long Term Assets [Line Items] Property, building and equipment, gross Property, Plant and Equipment, Gross Less accumulated depreciation Property, Plant and Equipment, Net