Goodwill and Intangibles - Schedule of Changes in Recorded Goodwill by Reporting Unit (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2016 USD ($)
Goodwill [Roll Forward]
Balance at beginning of period	$ 290,694
Goodwill from acquisitions	5,511
Goodwill related to noncontrolling interests	308
Other	273
Balance at end of period	296,240
Home health reporting unit [Member]
Goodwill [Roll Forward]
Balance at beginning of period	202,995
Goodwill from acquisitions	721
Goodwill related to noncontrolling interests	0
Balance at end of period	203,716
Hospice reporting unit
Goodwill [Roll Forward]
Balance at beginning of period	58,136
Goodwill from acquisitions	4,790
Goodwill related to noncontrolling interests	308
Other	273
Balance at end of period	62,961
Community-based reporting unit
Goodwill [Roll Forward]
Balance at beginning of period	17,972
Goodwill from acquisitions	0
Goodwill related to noncontrolling interests	0
Balance at end of period	17,972
Facility-based reporting unit
Goodwill [Roll Forward]
Balance at beginning of period	11,591
Goodwill from acquisitions	0
Goodwill related to noncontrolling interests	0
Balance at end of period	$ 11,591