CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Feb. 28, 2013	Feb. 29, 2012	Feb. 28, 2011
Revenues	$ 180,579	$ 138,728	$ 114,333
Cost of revenues	123,686	96,709	84,775
Gross profit	56,893	42,019	29,558
Operating expenses:
Research and development	14,291	11,328	11,125
Selling	12,725	11,060	10,503
General and administrative	12,154	10,984	8,858
Intangible asset amortization	1,743	1,277	1,132
Total operating expenses	40,913	34,649	31,618
Operating income (loss)	15,980	7,370	(2,060)
Non-operating income (expense):
Interest expense, net	(487)	(1,261)	(1,445)
Foreign currency translation account write-off		(801)
Other income (expense), net	(45)	(29)	50
Total non-operating expense	(532)	(2,091)	(1,395)
Income (loss) before income taxes	15,448	5,279	(3,455)
Income tax benefit (provision)	29,178	(61)	172
Net income (loss)	$ 44,626	$ 5,218	$ (3,283)
Earnings (loss) per share:
Basic	$ 1.54	$ 0.19	$ (0.12)
Diluted	$ 1.49	$ 0.18	$ (0.12)
Shares used in computing basic and diluted earnings (loss) per share:
Basic	28,886	27,658	27,181
Diluted	29,982	28,458	27,181