Goodwill and Other Intangibles, Net - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Indefinite-lived Intangible Assets [Line Items]
Goodwill impairment charges	$ 0	$ 0	$ 0
Impairment of intangible assets	500,000	650,000
Intangible assets net of accumulated amortization	62,184,000	62,042,000
General and Administrative Expense [Member]
Indefinite-lived Intangible Assets [Line Items]
Impairment of intangible assets	500,000	650,000
Home-based services [Member]
Indefinite-lived Intangible Assets [Line Items]
Intangible assets net of accumulated amortization	61,100,000
Facility-based services [Member]
Indefinite-lived Intangible Assets [Line Items]
Impairment of intangible assets		400,000
Intangible assets net of accumulated amortization	$ 1,100,000