EMPLOYEE STOCK PLANS (Tables)

12 Months Ended

Dec. 31, 2015

Employee Service Share-based Compensation, Aggregate Disclosures [Abstract]

Summary of Stock Option Activity

The following table summarizes the stock option activity under all of our equity incentive plans for the years ended December 31, 2015 and 2014:

	Number of Shares		Weighted- Average Exercise Price Per Share		Weighted Average Remaining Contractual Life	Aggregate Intrinsic Value
	(thousands)				(years)	(thousands)
Outstanding at December 31, 2013	4,993		$	2.18	4.9	$	5,281
Granted	746		2.42
Exercised	(486	)	1.03
Forfeited or expired	(333	)	7.01
Outstanding at December 31, 2014	4,920		$	2.01	4.2	$	7,513
Granted	716		3.37
Exercised	(1,017	)	1.91
Forfeited or expired	(447	)	4.16
Outstanding at December 31, 2015	4,172		$	2.04	4.1	$	6,254
Vested and expected to vest at December 31, 2015	3,928		$	2.00	4.0	$	6,059
Exercisable at December 31, 2015	2,785		$	1.80	3.5	$	4,818

Schedule of Supplemental Information Pertaining to Stock Options

The following table provides supplemental information pertaining to our stock options for the years ended December 31 (in thousands, except weighted-average fair values):

	2015		2014		2013
Weighted-average fair value of options granted	$	1.70	$	1.24	$	0.87
Intrinsic value of options exercised	$	2,449	$	685	$	386
Cash received from options exercised	$	1,940	$	502	$	445

Summary of Restricted Stock Unit Activity

The following table summarizes RSU activity under all of our equity incentive plans for the years ended December 31, 2015 and 2014:

	Number of Shares		Weighted Average Grant Date Fair Value
	(thousands)
Outstanding at December 31, 2013	429		$	1.45
Granted	697		2.42
Released	(232	)	1.99
Forfeited or Expired	(17	)	2.49
Outstanding at December 31, 2014	877		$	2.06
Granted	994		3.33
Released	(462	)	2.57
Forfeited or Expired	(120	)	2.86
Outstanding at December 31, 2015	1,289		$	2.78