OTHER FINANCIAL INFORMATION (Schedule of Valuation and Qualifying Accounts) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Feb. 28, 2013	Feb. 29, 2012	Feb. 28, 2011
Allowance for Doubtful Accounts [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at beginning of period	$ 254	$ 290	$ 413
Charged (credited) to costs and expenses	241	114	386
Deductions	(34)	(150)	(509)
Balance at end of period	461	254	290
Warranty Reserve [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at beginning of period	994	700	1,231
Charged (credited) to costs and expenses	910	635	647
Deductions	(576)	(341)	(1,178)
Balance at end of period	1,328	994	700
Deferred Tax Assets Valuation Allowance [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at beginning of period	39,054	41,182	41,297
Charged (credited) to costs and expenses	(35,095)	1,816	1,652
Deductions		(3,944)	(1,767)
Balance at end of period	$ 3,959	$ 39,054	$ 41,182