CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Dec. 31, 2011	Dec. 31, 2010
CONSOLIDATED BALANCE SHEETS
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, non-convertible shares authorized	32,000,000	32,000,000
Common stock, shares issued	15,249,829	15,117,029
Common stock, shares outstanding	15,249,829	15,117,029