Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Sep. 30, 2013	Dec. 31, 2012
Statement of Financial Position [Abstract]
Common stock, par value (USD per share)	$ 0.001	$ 0.001
Common stock, shares authorized	33,333,333	33,333,333
Common stock, shares issued	21,528,284	21,278,606
Common stock, shares outstanding	21,528,284	21,278,606
Treasury stock, shares	1,118,222	1,118,222