Letters Of Credit Sublimit

No definition available.

Name:	lhcg_LettersOfCreditSublimit
Namespace Prefix:	lhcg_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

LineOfCreditFacilityMaximumBorrowingCapacityUnderAccordionFeature

+ References

No definition available.

+ Details

Name:	lhcg_LineOfCreditFacilityMaximumBorrowingCapacityUnderAccordionFeature
Namespace Prefix:	lhcg_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Maximum number of SwingLine loans the Company can have outstanding at the same time.

+ References

No definition available.

+ Details

Name:	lhcg_NumberOfOutstandingDebtInstrument
Namespace Prefix:	lhcg_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentDescriptionOfVariableRateBasis
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

+ References

+ Details

Name:	us-gaap_DebtInstrumentInterestRateEffectivePercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the charge against earnings during the period for commitment fees and debt issuance expenses.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.8)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

+ Details

Name:	us-gaap_DebtRelatedCommitmentFeesAndDebtIssuanceCosts
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

Name:	us-gaap_LettersOfCreditOutstandingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Date the credit facility terminates, in CCYY-MM-DD format.

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityExpirationDate1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

+ References

No definition available.

+ Details

Name:	us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The carrying value as of the balance sheet date of the noncurrent portion of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 10
-Section 45
-Paragraph 13
-URI http://asc.fasb.org/extlink&oid=99376301&loc=d3e1314-112600

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 10
-Section 45
-Paragraph 14
-URI http://asc.fasb.org/extlink&oid=99376301&loc=d3e1336-112600

+ Details

Name:	us-gaap_LongTermLineOfCredit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

Name:	us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=us-gaap_EurodollarMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=us-gaap_BaseRateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=us-gaap_LondonInterbankOfferedRateLIBORMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	lhcg_PriorCreditFacilityAxis=lhcg_AlmostFamilyMemberMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	lhcg_PriorCreditFacilityAxis=lhcg_LHCGroupMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Debt - Additional Information (Detail) $ in Thousands		3 Months Ended	6 Months Ended	9 Months Ended
Debt - Additional Information (Detail) $ in Thousands	Apr. 02, 2018 USD ($) Instruments	Jun. 30, 2018 USD ($)	Jun. 30, 2018 USD ($)	Sep. 30, 2014	Dec. 31, 2017 USD ($)
Debt Instrument [Line Items]
Line of credit facility drawn	$ 247,400	$ 242,000	$ 242,000		$ 144,000
Letter of credit outstanding		$ 25,100	$ 25,100		$ 9,600
Line of credit facility interest rate	0.00%
Interest rate percentage		3.85%	3.85%
Available credit under agreement	$ 500,000	$ 232,900	$ 232,900
Credit facility maximum borrowing capacity under accordion feature	200,000
Letter of credit, sub-limit amount	$ 50,000
Line of Credit Facility, Expiration Date		Mar. 30, 2023
Debt Related Commitment Fees and Debt Issuance Costs			$ 1,900
Line of credit facility, description				(a) the Federal Funds Rate in effect on such day plus 0.5% (b) the Prime Rate in effect on such day and (c) the Eurodollar Rate for a one month interest period on such day plus 1.0%, plus a margin ranging from 0.75% to 1.5% per annum or Eurodollar rate plus a margin ranging from 1.75% to 2.5% per annum. Swing line loans bear interest at the Base Rate.
Minimum
Debt Instrument [Line Items]
Commitment fee rates for unused commitments	0.20%
Maximum
Debt Instrument [Line Items]
Commitment fee rates for unused commitments	0.35%
Eurodollar
Debt Instrument [Line Items]
Line of credit facility interest rate	1.50%
Line of credit facility, borrowing outstanding \| Instruments	15
Eurodollar \| Minimum
Debt Instrument [Line Items]
Line of credit facility interest rate	1.50%
Eurodollar \| Maximum
Debt Instrument [Line Items]
Line of credit facility interest rate	2.25%
Base rate
Debt Instrument [Line Items]
Line of credit facility interest rate			5.75%
Base rate \| Minimum
Debt Instrument [Line Items]
Line of credit facility interest rate	0.50%
Base rate \| Maximum
Debt Instrument [Line Items]
Line of credit facility interest rate	1.25%
LIBOR
Debt Instrument [Line Items]
Line of credit facility interest rate			3.88%
Almost Family
Debt Instrument [Line Items]
Line of credit facility drawn	$ 107,300
Credit facility, borrowing capacity	350,000
LHC Group
Debt Instrument [Line Items]
Line of credit facility drawn	$ 125,100