Condensed Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data	Sep. 30, 2011	Dec. 31, 2010
Condensed Consolidated Balance Sheets [Abstract]
Patient accounts receivable, allowance for uncollectible accounts	$ 10,808	$ 9,769
Property, building and equipment, accumulated depreciation	20,163	15,329
Intangible assets, accumulated amortization	$ 2,129	$ 1,499
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	40,000,000	40,000,000
Common stock, shares issued	21,352,211	21,180,286
Common stock, shares outstanding	18,281,181	18,172,022
Treasury stock at cost, shares	3,071,030	3,008,264