STOCKHOLDERS' EQUITY (Tables)

12 Months Ended

Feb. 28, 2017

Equity [Abstract]

Summary of Stock Option Activity

The following table summarizes stock option activity for fiscal years 2017, 2016 and 2015 (options in thousands):

			Weighted
	Number of		Average
	Options		Exercise Price
Outstanding at February 28, 2014	1,093		$	5.04
Granted	61			17.47
Exercised	(143	)		5.01
Forfeited or expired	(4	)		6.88
Outstanding at February 28, 2015	1,007			5.80
Granted	82			17.54
Exercised	(228	)		5.62
Forfeited or expired	(1	)		1.80
Outstanding at February 28, 2016	860			6.96
Granted	227			14.49
Exercised	(125	)		7.67
Forfeited or expired	(7	)		15.70
Outstanding at February 28, 2017	955		$	8.60
Exercisable at February 28, 2017	624		$	5.03

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

The weighted average fair value for stock options granted in fiscal years 2017, 2016 and 2015 was $6.69, $9.39 and $11.02, respectively. The fair value of options at the grant date was determined using the Black-Scholes option pricing model with the following assumptions:

	Year Ended February 28,
Black-Scholes Valuation Assumptions	2017		2016		2015
Expected life (years) (1)	6		6		6
Expected volatility (2)	48	%	56	%	70	%
Risk-free interest rates (3)	1.3	%	1.8	%	1.9	%
Expected dividend yield	0	%	0	%	0	%

Summary of Restricted Stock Shares, Performance Stock Units (PSU's) and RSUs Activity

Changes in the Company's outstanding restricted stock shares, PSUs and RSUs during fiscal years 2017, 2016 and 2015 were as follows (shares, PSUs and RSUs in thousands):

	Number of
	Restricted		Weighted
	Shares,		Average Grant
	PSUs and		Date Fair
	RSUs		Value
Outstanding at February 28, 2014	1,024		$	8.02
Granted	365			17.92
Vested	(471	)		6.28
Forfeited	(32	)		11.69
Outstanding at February 28, 2015	886			12.90
Granted	517			17.75
Vested	(407	)		9.97
Forfeited	(43	)		15.55
Outstanding at February 28, 2016	953			16.66
Granted	766			14.63
Vested	(382	)		15.18
Forfeited	(98	)		15.64
Outstanding at February 28, 2017	1,239		$	15.94

Schedule of Stock-based Compensation Expense

Stock-based compensation expense during fiscal years 2017, 2016 and 2015 is included in the following captions of the consolidated statements of comprehensive income (loss) (in thousands):

	Year Ended February 28,
	2017		2016		2015
Cost of revenues	$	374	$	229	$	241
Research and development		1,033		781		613
Selling		1,655		1,208		591
General and administrative		4,771		3,636		2,655
	$	7,833	$	5,854	$	4,100