CONSOLIDATED CASH FLOW STATEMENTS (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Feb. 29, 2012	Feb. 28, 2011	Feb. 28, 2010
Cash flows from operating activities:
Net income (loss)	$ 10,662	$ 10,627	$ (7,978)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	30,424	25,518	25,354
Impairment losses	0	6,739	0
Foreign exchange loss (gain)	340	(520)	88
Excess tax benefits from stock-based compensation	(264)	(299)	(100)
Stock-based compensation	7,884	24,106	17,602
Deferred income taxes	9,573	(2,007)	(10,065)
Loss (gain) on sales of property, plant and equipment	63	(14)	(70)
Deferred income on shipments to distributors	2,277	42	4,356
Non cash restructuring charges	73	1,044	336
Provision for (recoveries of) sales returns and allowances	155	(106)	(41)
Changes in operating assets and liabilities, net of effects of business acquisitions:
Accounts receivable	14,887	(12,664)	(19,337)
Inventories	11,598	914	10,513
Accounts payable, accrued expenses and other liabilities	(16,968)	(8,746)	15,890
Accrued restructuring charges	(2,093)	1,730	(4,294)
Income taxes receivable and payable	(4,851)	(3,322)	6,532
Other changes, net	(2,708)	1,933	1,167
Net cash provided by operating activities	61,052	44,975	39,953
Cash flows from investing activities:
Capital expenditures	(11,706)	(12,396)	(8,616)
Purchase of technology patent rights	0	0	(1,200)
Acquisition of business, net of cash acquired (Symwave)	0	1,517	0
Acquisition of business, net of cash acquired (STS)	0	(21,891)	0
Acquisition of business, net of cash acquired (Kleer)	0	0	(5,176)
Acquisition of business, net of cash acquired (Tallika)	0	0	(1,825)
Acquisition of business, net of cash acquired (K2L)	0	0	(5,277)
Acquisition of business, net of cash acquired (BridgeCo)	(40,968)	0	0
Investments in non-marketable debt securities (Symwave)	0	(3,125)	0
Proceeds from sale of non-marketable equity investment (Canesta)	0	2,320	0
Investment in non-marketable equity investments (Symwave, Canesta and EqcoLogic)	0	(2,042)	(7,238)
Purchases of short-term and long-term investments	0	(14,900)	(32,275)
Sales and maturities of short-term and long-term investments	3,628	60,617	31,525
Net cash (used in) provided by investing activities	(49,046)	10,100	(30,082)
Cash flows from financing activities:
Excess tax benefits from stock-based compensation	264	299	100
Proceeds from issuance of common stock	7,700	9,791	4,243
Purchases of treasury stock	(30,973)	(212)	0
Payments of contingent consideration	(5,752)	0	0
Repayments of obligations under supplier financing arrangements	(7,288)	(4,382)	(3,955)
Net cash (used in) provided by financing activities	(36,049)	5,496	388
Effect of foreign exchange rate changes on cash and cash equivalents	710	675	1,726
Net (decrease) increase in cash and cash equivalents	(23,333)	61,246	11,985
Cash and cash equivalents at beginning of year	170,387	109,141	97,156
Cash and cash equivalents at end of year	$ 147,054	$ 170,387	$ 109,141