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Allowance For Doubtful Accounts (Allowance For Doubtful Debts) (Details) (USD $) In Thousands, unless otherwise specified	1 Months Ended	12 Months Ended			1 Months Ended
	Jul. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Jan. 31, 2013 Maximum [Member] Subsequent Event [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of reduction of Medicare payments to nursing centers	11.10%
Percentage of reduction of Medicare payments to plans and providers					2.00%
Bad debt provision		$ 2,160	$ 2,450	$ 2,200

Amount of the current period expense charged against operations, the offset which is generally to the allowance for doubtful accounts for the purpose of reducing receivables, including notes receivable, to an amount that approximates their net realizable value (the amount expected to be collected).

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