Goodwill and Intangibles - Additional Information (Detail) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Indefinite-lived Intangible Assets [Line Items]
Document Period End Date	Sep. 30, 2015
Intangible assets net of accumulated amortization	$ 80,731	$ 79,685
Home health services
Indefinite-lived Intangible Assets [Line Items]
Intangible assets net of accumulated amortization	66,900
Hospice services
Indefinite-lived Intangible Assets [Line Items]
Intangible assets net of accumulated amortization	5,600
Community-based services
Indefinite-lived Intangible Assets [Line Items]
Intangible assets net of accumulated amortization	7,300
Facility- based services
Indefinite-lived Intangible Assets [Line Items]
Intangible assets net of accumulated amortization	$ 900