Supplemental Cash Flow Information (Details Textual) (USD $) In Thousands, unless otherwise specified	6 Months Ended
Jun. 30, 2012
Supplemental Cash Flow Information (Textual) [Abstract]
Company redeemed treasury shares for tax payments	$ 562

Equity impact of the cost of common and preferred stock that were repurchased during the period from recipients to satisfy personal tax obligations on the vesting of common stock.

No definition available.

Name:	lhcg_TreasurySharesRedeemedToPayIncomeTax
Namespace Prefix:	lhcg_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration