BASIC AND DILUTED NET INCOME (LOSS) PER SHARE (Tables)

9 Months Ended

Sep. 30, 2013

BASIC AND DILUTED NET INCOME (LOSS) PER SHARE

Schedule of shares used to calculate diluted earnings per share

	Three Months Ended						Nine Months Ended
	September 30,						September 30,
	2013			2012			2013			2012
Numerator:
Net income (loss)	$	(7,251	)	$	(7,745	)	$	(21,879	)	$	13,147
Denominator:
Weighted average number of common shares outstanding	34,516,051			34,243,792			34,435,129			34,188,146
Effect of dilutive securities:
Stock options	—			—			—			82,309
Dilutive potential common shares	—			—			—			82,309
Shares used in calculating diluted earnings per share	34,516,051			34,243,792			34,435,129			34,270,455

Schedule of number of shares of potentially dilutive common stock related to options and warrants that were excluded from the calculation of dilutive shares

	Three Months Ended		Nine Months Ended
	September 30,		September 30,
	2013	2012	2013	2012
Options	6,195,437	5,665,046	5,675,833	5,413,073
Warrants	4,086	4,086	4,086	4,086
Total	6,199,523	5,669,132	5,679,919	5,417,159