Consolidated Balance Sheets (Unaudited) (Parenthetical) (USD $) In Thousands, except Share data	Jun. 30, 2011	Dec. 31, 2010
Assets:
Property and equipment, less accumulated depreciation and amortization	$ 8,959	$ 8,095
Stockholders' equity:
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	50,000,000	50,000,000
Common stock, shares issued	34,596,809	34,508,932
Common stock, shares outstanding	34,596,809	34,508,932