Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Consolidated Balance Sheets
Accumulated depreciation and amortization of property and equipment (in dollars)	$ 8,872	$ 8,501
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	125,000,000	125,000,000
Common stock, shares issued	49,631,672	49,631,672
Common stock, shares outstanding	49,631,672	49,631,672