Goodwill and Intangibles - Schedule of Changes in Recorded Goodwill by Reporting Unit (Detail) $ in Thousands	6 Months Ended
	Jun. 30, 2015 USD ($)
Goodwill [Roll Forward]
Balance at beginning of period	$ 240,019
Goodwill from acquisitions	342
Goodwill related to noncontrolling interests	36
Goodwill related to disposal	(183)
Balance at end of period	240,214
Home health reporting unit
Goodwill [Roll Forward]
Balance at beginning of period	196,296
Goodwill from acquisitions	138
Goodwill related to noncontrolling interests	14
Goodwill related to disposal	(156)
Balance at end of period	196,292
Hospice reporting unit
Goodwill [Roll Forward]
Balance at beginning of period	14,793
Goodwill from acquisitions	0
Goodwill related to noncontrolling interests	0
Goodwill related to disposal	0
Balance at end of period	14,793
Community-based reporting unit
Goodwill [Roll Forward]
Balance at beginning of period	17,339
Goodwill from acquisitions	204
Goodwill related to noncontrolling interests	22
Goodwill related to disposal	(27)
Balance at end of period	17,538
Facility-based reporting unit
Goodwill [Roll Forward]
Balance at beginning of period	11,591
Goodwill from acquisitions	0
Goodwill related to noncontrolling interests	0
Goodwill related to disposal	0
Balance at end of period	$ 11,591