Consolidated Statements of Income (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Revenues:
Net patient revenues	$ 705,386,000	$ 715,489,000	$ 663,629,000
Other revenues	55,876,000	58,048,000	57,024,000
Net operating revenues	761,262,000	773,537,000	720,653,000
Costs and Expenses:
Salaries, wages and benefits	426,934,000	428,672,000	400,270,000
Other operating	198,691,000	198,439,000	197,016,000
Rent	39,355,000	39,736,000	38,086,000
Depreciation and amortization	29,792,000	28,901,000	27,141,000
Interest	455,000	443,000	513,000
Total costs and expenses	695,227,000	696,191,000	663,026,000
Income Before Non-Operating Income	66,035,000	77,346,000	57,627,000
Non-Operating Income	25,245,000	20,533,000	23,340,000
Income Before Income Taxes	91,280,000	97,879,000	80,967,000
Income Tax Provision	(33,323,000)	(33,807,000)	(28,272,000)
Net Income	57,957,000	64,072,000	52,695,000
Dividends to Preferred Stockholders	(8,671,000)	(8,671,000)	(8,673,000)
Net Income Available to Common Stockholders	$ 49,286,000	$ 55,401,000	$ 44,022,000
Earnings Per Common Share:
Basic (in Dollars per share)	$ 3.56	$ 4.02	$ 3.22
Diluted (in Dollars per share)	$ 3.49	$ 3.90	$ 3.22
Weighted Average Common Shares Outstanding:
Basic (in Shares)	13,852,709	13,774,628	13,671,053
Diluted (in Shares)	16,598,816	16,414,023	13,676,476