Acquisitions and Disposals - Additional Information (Detail) (USD $)	9 Months Ended
	Sep. 30, 2013 Joint_Ventures
Business Combination Summary Of Acquisition [Abstract]
Total purchase price for acquisitions	$ 27,300,000
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
Number of joint ventures in which additional ownership interests were acquired	6
Decrease in noncontrolling interest redeemable	612,000
Reduction in additional paid in capital as a result of the purchase of additional ownership interests	1,300,000
Noncompete Agreements [Member] | Minimum [Member]
Business Combination Summary Of Acquisition [Abstract]
Life of the non-compete agreements	2 years
Noncompete Agreements [Member] | Maximum [Member]
Business Combination Summary Of Acquisition [Abstract]
Life of the non-compete agreements	5 years
Home health agencies [Member]
Business Combination Summary Of Acquisition [Abstract]
Number of entities acquired	19
Number of additional entities acquired	4
Hospice agency [Member]
Business Combination Summary Of Acquisition [Abstract]
Number of entities acquired	1
Number of additional entities acquired	1
General and Administrative Expense [Member]
Business Combination Summary Of Acquisition [Abstract]
Acquisition-related costs	569,000
Home-based services segment [Member]
Business Combination Summary Of Acquisition [Abstract]
Goodwill Recognized	25,700,000
Noncontrolling goodwill	$ 622,000