Commitments and Contingencies (Details Textual)	9 Months Ended
Sep. 30, 2012
Commitments and Contingencies (Textual) [Abstract]
Period of joint venture buy/sell option	30 days

Time frame in which 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.

No definition available.

Name:	lhcg_PeriodOfJointVentureBuySellOption
Namespace Prefix:	lhcg_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration