Goodwill and Other Intangibles, Net - Schedule of Changes in Goodwill by Segment (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Goodwill [Roll Forward]
Balance at beginning of period	$ 169,150,000
Goodwill from acquisitions	25,743,000
Goodwill related to noncontrolling interest	622,000
Balance at end of period	194,893,000
Home-based services [Member]
Goodwill [Roll Forward]
Balance at beginning of period	157,559,000	153,140,000
Goodwill from acquisitions	25,121,000	3,517,000
Goodwill related to noncontrolling interest	622,000	902,000	658,000
Balance at end of period	183,302,000	157,559,000	153,140,000
Facility-based services segment [Member]
Goodwill [Roll Forward]
Balance at end of period	$ 11,591,000	$ 11,591,000	$ 11,591,000