CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Jun. 30, 2013	Dec. 31, 2012
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	580,000,000	580,000,000
Common stock, shares issued	12,717,088	12,807,673
Common stock, shares outstanding	12,717,088	12,807,673