Income Taxes (Significant Components Of Federal And State Deferred Tax Assets And Liabilities) (Details) (USD $)	Dec. 31, 2012	Dec. 31, 2011
Income Tax Disclosure [Abstract]
Allowance for doubtful accounts	$ 1,580,000	$ 1,794,000
Accrued insurance claims — current	2,727,000	2,108,000
Expensing of housekeeping supplies	(4,432,000)	(4,176,000)
Other	(450,000)	(677,000)
Net current deferred assets (liabilities)	(575,000)	(951,000)
Deferred compensation	7,095,000	6,046,000
Non-deductible reserves	8,000	11,000
Depreciation of property and equipment	(3,028,000)	(3,019,000)
Accrued insurance claims — noncurrent	6,255,000	4,920,000
Amortization of intangibles	522,000	(78,000)
Other	363,000	301,000
Net noncurrent deferred assets	$ 11,215,000	$ 8,181,000