Summary of Significant Accounting Policies (Narrative) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended				3 Months Ended
	Dec. 31, 2012 Center Entity	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2012 Leases, Acquired-in-Place	Dec. 31, 2010 Skilled Nursing Center North Carolina	Dec. 31, 2012 Leased Center	Dec. 31, 2012 Leased Leases, Acquired-in-Place Center	Dec. 31, 2012 Omega Healthcare Investors, Inc Leased Center	Dec. 31, 2012 Omega Healthcare Investors, Inc Leased Leases, Acquired-in-Place Facility	Dec. 31, 2012 Pharmacy Partnership
Accounting Policies [Line Items]
Number of variable interest entities	1
Percentage of owned joint venture Investment in nonconsolidated affiliate										50.00%
Period of retroactive adjustment for reimbursements	3 years
Net favorable (unfavorable) estimated settlements from federal and state programs	$ (279)	$ 663	$ (2)
Provision for doubtful accounts	3,581	2,223	2,105
Provision for doubtful accounts as a percentage of net revenue	1.20%	0.70%	0.70%
Number of nursing centers	48					40	7	36	1
Asset impairment	0	344	0
Impairment					402
Remaining life of the acquired lease				28 years
Amortization of intangible asset	384	384,000	384,000
Stock based compensation	$ 580	$ 537	$ 597