Unaudited Summarized Quarterly Financial Information - Unaudited Quarterly Results of Operations (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Quarterly Financial Information Disclosure [Abstract]
Net service revenue	$ 165,280	$ 164,748	$ 166,302	$ 161,953	$ 161,827	$ 158,926	$ 158,055	$ 158,761	$ 658,283	$ 637,569	$ 633,872
Gross margin	70,039	66,782	69,293	68,705	69,386	67,692	65,837	68,902	274,819	271,817	281,526
Net income attributable to LHC Group, Inc.'s common stockholders	$ 4,969	$ 5,297	$ 5,790	$ 6,286	$ 7,400	$ 6,336	$ 5,963	$ 7,741
Basic earnings per share:
Net income attributable to LHC Group, Inc.'s common stockholders	$ 0.29	$ 0.31	$ 0.34	$ 0.37	$ 0.43	$ 0.36	$ 0.32	$ 0.42	$ 1.31	$ 1.54	$ (0.73)
Diluted earnings per share:
Net income attributable to LHC Group, Inc.'s common stockholders	$ 0.29	$ 0.31	$ 0.34	$ 0.37	$ 0.43	$ 0.36	$ 0.32	$ 0.42	$ 1.30	$ 1.53	$ (0.73)
Weighted average shares outstanding:
Basic	17,096,360	17,083,201	17,055,619	16,966,525	17,056,611	17,656,842	18,385,783	18,333,838	17,049,794	17,853,321	18,265,118
Diluted	17,228,499	17,182,013	17,127,017	17,073,543	17,155,909	17,726,819	18,423,258	18,399,608	17,132,751	17,899,195	18,265,118