Goodwill and Intangibles - Schedule of Changes in Recorded Goodwill by Reporting Unit (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2017 USD ($)
Goodwill [Roll Forward]
Balance at beginning of period	$ 307,317
Goodwill from acquisitions	6,430
Goodwill related to noncontrolling interests	4,956
Other	342
Balance at end of period	319,045
Home health reporting unit
Goodwill [Roll Forward]
Balance at beginning of period	210,839
Goodwill from acquisitions	3,092
Goodwill related to noncontrolling interests	2,529
Other	(5)
Balance at end of period	216,455
Hospice reporting unit
Goodwill [Roll Forward]
Balance at beginning of period	64,234
Goodwill from acquisitions	2,966
Goodwill related to noncontrolling interests	2,427
Other	0
Balance at end of period	69,627
Community-based reporting unit
Goodwill [Roll Forward]
Balance at beginning of period	18,820
Goodwill from acquisitions	0
Goodwill related to noncontrolling interests	0
Other	0
Balance at end of period	18,820
Facility-based reporting unit
Goodwill [Roll Forward]
Balance at beginning of period	13,424
Goodwill from acquisitions	372
Goodwill related to noncontrolling interests	0
Other	347
Balance at end of period	$ 14,143