STOCK-BASED COMPENSATION (Notes)

3 Months Ended

Mar. 31, 2015

Disclosure of Compensation Related Costs, Share-based Payments [Text Block]

STOCK-BASED COMPENSATION

Information with respect to option shares granted under all the Company’s stock incentive plans for the three months endedMarch 31, 2015 was as follows:

	Time-Based Shares		Performance-Based Shares	Total Shares		Weighted- Average Exercise Price	Weighted- Average Remaining Contractual Term (years)	Aggregate Intrinsic Value (in thousands)
Options outstanding at January 1, 2015	5,564,111		—	5,564,111		$11.20
Granted	—		—	—		$—
Exercised	(39,361	)	—	(39,361	)	$11.96
Forfeited or canceled	(73,078	)	—	(73,078	)	$24.00
Options outstanding at March 31, 2015	5,451,672		—	5,451,672		$11.02	4.60	$27,893
Options vested at March 31, 2015 or expected to vest				5,274,698		$11.13	4.55	$26,637
Options exercisable at March 31, 2015				3,773,237		$12.38	4.06	$16,193

Information with respect to the Company’s non-vested restricted stock units for the three months endedMarch 31, 2015 was as follows:

	Non-Vested Restricted Stock Units
	Time-Based Shares		Performance-Based Shares	Total Shares		Weighted- Average Grant-Date Fair Value	Weighted- Average Remaining Contractual Term (years)	Aggregate Intrinsic Value (in thousands)
Non-vested at January 1, 2015	811,880		—	811,880		$10.01
Granted	369,597		342,697	712,294		$15.17
Vested	(171,938	)	—	(171,938	)	$10.31
Forfeited	—		—	—		$—
Non-vested at March 31, 2015	1,009,539		342,697	1,352,236		$12.69	1.05	$20,135
Expected to vest				1,213,944		$12.64	1.00	$18,076

Stock-based compensation was included in the following captions in the Company’s condensed consolidated statements of operations for the three months endedMarch 31, 2015 and 2014 (in thousands):

	Three Months Ended March 31,
	2015		2014
Cost of products revenues	$	95	$	76
Cost of services revenues	159		77
Research and development expenses	107		127
Marketing and selling expenses	690		292
General and administrative expenses	1,410		690
	$	2,461	$	1,262