Allowance for Uncollectible Accounts - Additional Information (Details)	Mar. 31, 2017	Dec. 31, 2016
Valuation and Qualifying Accounts [Abstract]
Allowance for uncollectible accounts, percent of accounts receivable	18.10%	18.90%

The percentage of allowance for uncollectible accounts relative to accounts receivable.

No definition available.

Name:	lhcg_AllowanceforUncollectibleAccountsPercentofAccountsReceivable
Namespace Prefix:	lhcg_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant