Goodwill and Other Intangibles, Net - Schedule of Changes in Goodwill by Segment (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Goodwill [Roll Forward]
Balance at beginning of period	$ 240,019	$ 194,893
Goodwill from acquisitions	51,050	45,213
Goodwill related to noncontrolling interests	36	113
Goodwill related to disposal	(411)	(200)
Balance at end of period	290,694	240,019
Home Health Reporting Unit [Member]
Goodwill [Roll Forward]
Balance at beginning of period	196,296	173,574
Goodwill from acquisitions	7,069	22,809
Goodwill related to noncontrolling interests	14	113
Goodwill related to disposal	(384)	(200)
Balance at end of period	202,995	196,296
Hospice Reporting Unit [Member]
Goodwill [Roll Forward]
Balance at beginning of period	14,793	9,463
Goodwill from acquisitions	43,343	5,330
Goodwill related to noncontrolling interests	0	0
Goodwill related to disposal	0	0
Balance at end of period	58,136	14,793
Community Based Reporting Unit [Member]
Goodwill [Roll Forward]
Balance at beginning of period	17,339	265
Goodwill from acquisitions	638	17,074
Goodwill related to noncontrolling interests	22	0
Goodwill related to disposal	(27)	0
Balance at end of period	17,972	17,339
Facility Based Reporting Unit [Member]
Goodwill [Roll Forward]
Balance at beginning of period	11,591	11,591
Goodwill from acquisitions	0	0
Goodwill related to noncontrolling interests	0	0
Goodwill related to disposal	0	0
Balance at end of period	$ 11,591	$ 11,591