CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Feb. 28, 2012	Feb. 28, 2011	Feb. 28, 2010
Revenues	$ 138,728	$ 114,333	$ 112,113
Cost of revenues	96,709	84,775	89,723
Gross profit	42,019	29,558	22,390
Operating expenses:
Research and development	11,328	11,125	10,943
Selling	11,060	10,503	9,542
General and administrative	10,984	8,858	10,523
Intangible asset amortization	1,277	1,132	1,367
Total operating expenses	34,649	31,618	32,375
Operating income (loss)	7,370	(2,060)	(9,985)
Non-operating income (expense):
Interest expense, net	(1,261)	(1,445)	(940)
Foreign currency translation account write-off	(801)	0	0
Loss on sale of investment	0	0	(1,008)
Other income (expense), net	(29)	50	(292)
Total non-operating expense	(2,091)	(1,395)	(2,240)
Income (loss) before income taxes	5,279	(3,455)	(12,225)
Income tax benefit (provision)	(61)	172	1,374
Net income (loss)	$ 5,218	$ (3,283)	$ (10,851)
Earnings (loss) per share:
Basic (in dollars per share)	$ 0.19	$ (0.12)	$ (0.43)
Diluted (in dollars per share)	$ 0.18	$ (0.12)	$ (0.43)
Shares used in computing basic and diluted earnings (loss) per share:
Basic (in shares)	27,658	27,181	25,309
Diluted (in shares)	28,458	27,181	25,309