Goodwill and Intangibles - Additional Information (Detail) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Indefinite-lived Intangible Assets [Line Items]
Intangible assets, net carrying amount	$ 79,027	$ 79,685
Home health services
Indefinite-lived Intangible Assets [Line Items]
Intangible assets, net carrying amount	65,700
Hospice services
Indefinite-lived Intangible Assets [Line Items]
Intangible assets, net carrying amount	5,000
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