Income Taxes (Significant Components of Federal and State Deferred Tax Assets And Liabilities) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
Net current deferred assets (liabilities):
Allowance for doubtful accounts	$ 1,560,000	$ 1,580,000
Accrued insurance claims — current	3,574,000	2,727,000
Expensing of housekeeping supplies	(5,059,000)	(4,432,000)
Other	2,264,000	(450,000)
Net current deferred assets (liabilities)	2,339,000	(575,000)
Net noncurrent deferred assets (liabilities):
Deferred compensation	7,987,000	7,095,000
Non-deductible reserves	5,000	8,000
Depreciation of property and equipment	(2,933,000)	(3,028,000)
Accrued insurance claims — noncurrent	6,848,000	6,255,000
Amortization of intangibles	1,015,000	522,000
Other	352,000	363,000
Net noncurrent deferred assets	$ 13,274,000	$ 11,215,000