Goodwill and Intangibles - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Indefinite-lived Intangible Assets [Line Items]
Intangible assets, net carrying amount	$ 79,504	$ 79,685
Home health services
Indefinite-lived Intangible Assets [Line Items]
Intangible assets, net carrying amount	66,100
Hospice Services
Indefinite-lived Intangible Assets [Line Items]
Intangible assets, net carrying amount	5,100
Community-based services
Indefinite-lived Intangible Assets [Line Items]
Intangible assets, net carrying amount	7,300
Facility-based services
Indefinite-lived Intangible Assets [Line Items]
Intangible assets, net carrying amount	$ 1,000