Acquisitions and Disposals - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013 JointVenture	Dec. 31, 2012 Subsidiary JointVenture	Dec. 31, 2011 JointVenture
Business Acquisition [Line Items]
Total purchase price for acquisitions	$ 27,300,000	$ 5,100,000	$ 12,300,000
Acquisition price paid in cash	26,920,000
Acquisition paid in assumed liabilities	380,000
Noncontrolling goodwill	622,000
Purchase price to acquire additional ownership interests in joint ventures	1,900,000	309,000	891,000
Number of joint ventures in which additional ownership interests were acquired	6	3	3
Decrease in noncontrolling interest redeemable	612,000	120,000
Reduction in additional paid in capital as a result of the purchase of additional ownership interests	1,300,000	189,000	641,000
Number of subsidiaries in which membership interests were sold		1
Total sale price of acquisitions		80,000	308,000
Percentage of membership interest for sale		40.00%	26.00%
Ownership transfer as consideration for acquisition			26.32%
Change in additional paid in capital due to a transfer of ownership interests as consideration for an acquisition			206,000
Settlement of working capital amounts			155,000
Additional Paid-in Capital [Member]
Business Acquisition [Line Items]
Change in Additional Paid in Capital as a result of the sale of membership interests		80,000	212,000
Minimum [Member]
Business Acquisition [Line Items]
Estimated useful life	2 years
Maximum [Member]
Business Acquisition [Line Items]
Estimated useful life	5 years
Home-based services [Member]
Business Acquisition [Line Items]
Goodwill Recognized	25,700,000	4,400,000	7,400,000
Noncontrolling goodwill	622,000	902,000	658,000
General and Administrative Expense [Member]
Business Acquisition [Line Items]
Acquisition-related costs	$ 590,000
Home health agencies [Member]
Business Acquisition [Line Items]
Number of entities acquired	19
Number of additional entities acquired	4
Hospice agency [Member]
Business Acquisition [Line Items]
Number of entities acquired	1
Number of additional entities acquired	1