Acquisitions and Disposals - Additional Information (Detail) (USD $)	3 Months Ended
	Mar. 31, 2014
Business Acquisition [Line Items]
Total purchase price for acquisitions	$ 1,700,000
Cash paid for acquisitions, primarily goodwill and intangible assets	1,621,000
Proceeds from sale of additional ownership interests in joint ventures	200,000
Home-based services [Member]
Business Acquisition [Line Items]
Number of entities acquired	2
Goodwill Recognized	500,000
General and Administrative Expense [Member]
Business Acquisition [Line Items]
Acquisition-related costs	200,000
Hospice-based services [Member]
Business Acquisition [Line Items]
Number of entities acquired	1
Goodwill Recognized	1,000,000
Deaconess HomeCare, LLC [Member]
Business Acquisition [Line Items]
Cash paid for acquisitions, primarily goodwill and intangible assets	$ 59,500,000
Date of acquisition	Mar. 31, 2014
Minimum [Member]
Business Acquisition [Line Items]
Estimated useful life	2 years
Maximum [Member]
Business Acquisition [Line Items]
Estimated useful life	5 years