CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (unaudited) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Nov. 30, 2011	Nov. 30, 2010
Cash flows provided by operating activities:
Net income	$ 14,792	$ 8,955
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	22,453	18,383
Foreign exchange loss (gain)	533	(305)
Excess tax benefits from stock-based compensation	(190)	(91)
Stock-based compensation	5,442	22,285
Deferred income taxes	13,074	(3,469)
Losses on sales of property, plant and equipment	7	40
Deferred income from distribution	511	2,929
Non-cash restructuring charges	73	0
Provision for sales returns and allowances	200	91
Impairment loss on equity investment	0	3,208
Changes in operating assets and liabilities, net of effects of business acquisitions:
Accounts receivable	14,879	(13,373)
Inventories	4,459	(2,032)
Accounts payable, accrued expenses and other liabilities	(23,064)	52
Accrued restructuring charges	(2,400)	(711)
Income taxes receivable and payable	(6,794)	(997)
Other changes, net	582	(1,203)
Net cash provided by operating activities	44,557	33,762
Cash flows from investing activities:
Capital expenditures	(7,953)	(9,795)
Disposals of fixed assets	28	0
Acquisition of business, net of cash acquired (BridgeCo)	(40,968)	0
Acquisition of business, net of cash acquired (Symwave)	0	1,517
Acquisition of business, net of cash acquired (STS)	0	(21,891)
Investments in non-marketable debt securities (Symwave)	0	(3,125)
Proceeds from sale of non-marketable equity investment (Canesta)	0	2,248
Investment in non-marketable equity investments (EqcoLogic)	0	(2,042)
Purchases of short-term and long-term investments	0	(14,900)
Sales and maturities of short-term and long-term investments	2,600	59,750
Net cash (used in) provided by investing activities	(46,293)	11,762
Cash flows from financing activities:
Excess tax benefits from stock-based compensation	190	91
Proceeds from issuance of common stock	4,710	6,454
Purchases of treasury stock	(25,868)	(96)
Repayments of obligations under supplier financing arrangements	(4,961)	(3,267)
Net cash (used in) provided by financing activities	(25,929)	3,182
Effect of foreign exchange rate changes on cash and cash equivalents	(881)	162
Net (decrease) increase in cash and cash equivalents	(28,546)	48,868
Cash and cash equivalents at beginning of period	170,387	109,141
Cash and cash equivalents at end of period	$ 141,841	$ 158,009