Condensed Consolidated Balance Sheets (unaudited) (Parenthetical) (USD $)	Jun. 30, 2011	Dec. 31, 2010
Stockholders' equity:
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	75,000,000	75,000,000
Common stock, shares issued	13,865,574	12,731,287
Common stock, shares outstanding	13,865,574	12,731,287