Net Income (Loss) Per Share (Details Textual)	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Net Income (Loss) Per Share (Textual) [Abstract]
Antidilutive securities excluded from computation of earning per share	7,371,471	7,463,668	7,371,471	7,463,668