Goodwill and Intangibles - Schedule of Changes in Recorded Goodwill by Reporting Unit (Detail) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2014 Home-Based reporting unit	Sep. 30, 2014 Community Based reporting unit	Sep. 30, 2014 Hospice reporting unit	Sep. 30, 2014 Facility-Based reporting unit	Dec. 31, 2013 Facility-Based reporting unit
Goodwill [Roll Forward]
Balance at beginning of period	$ 194,893	$ 173,574	$ 265	$ 9,463	$ 11,591	$ 11,591
Goodwill from acquisitions	47,337	26,899	16,874	3,564
Goodwill related to noncontrolling interests	38	38
Balance at end of period	242,218	200,461	17,139	13,027	11,591	11,591
Goodwill, written-off related to sale of business unit	$ (50)	$ (50)