CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) [Parenthetical] (USD $)	Mar. 31, 2012	Dec. 31, 2011
Common stock, par value per share (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	30,000,000	30,000,000
Common stock, shares issued	18,688,837	18,325,529
Treasury stock, shares	801,920	801,920