Goodwill and Intangibles - Schedule of Changes in Recorded Goodwill by Reporting Unit (Detail) $ in Thousands	9 Months Ended
	Sep. 30, 2016 USD ($)
Goodwill [Roll Forward]
Balance at beginning of period	$ 290,694
Goodwill from acquisitions	14,116
Goodwill related to noncontrolling interests	710
Other	219
Balance at end of period	305,739
Home health reporting unit [Member]
Goodwill [Roll Forward]
Balance at beginning of period	202,995
Goodwill from acquisitions	5,809
Goodwill related to noncontrolling interests	354
Other	504
Balance at end of period	209,662
Hospice reporting unit
Goodwill [Roll Forward]
Balance at beginning of period	58,136
Goodwill from acquisitions	7,459
Goodwill related to noncontrolling interests	356
Other	(285)
Balance at end of period	65,666
Community-based reporting unit
Goodwill [Roll Forward]
Balance at beginning of period	17,972
Goodwill from acquisitions	848
Goodwill related to noncontrolling interests	0
Balance at end of period	18,820
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