Summary of Significant Accounting Policies - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013 D Number_of_Visits	Jun. 30, 2012	Dec. 31, 2012
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Episode of care as episodic-based revenue, days			60
Percentage of total reimbursement of outlier payment			10.00%
Low utilization payment adjustment, maximum number of visits			5
First threshold of therapy services required, visits			6
Second threshold of services required, visits			14
Third threshold of therapy services required, visits			20
Historical collection rate from Medicare			99.00%
Episodes of progress that begin during reporting period, days			60
Hospice Medicare revenue rate accounted for routine care	99.00%	97.00%	99.00%	98.00%
Estimated amounts due back to Medicare	$ 4.0		$ 4.0		$ 4.8
Percentage of patient receivables outstanding			10.00%
Minimum days for accounts receivable outstanding to be fully reserved			365
Portion of accounts receivable derived from Medicare			71.00%		68.00%
Revenue adjustment to Medicare revenue	$ 2.8	$ 2.1	$ 6.6	$ 4.7
Rate of request for anticipated payment submitted for the initial episode of care			60.00%
Rate of request for anticipated payment submitted for subsequent episodes of care			50.00%
Maximum days to submit final bill from the start of episode			120
Maximum days to submit final bill from the date the request for anticipated payment was paid			60