Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Feb. 29, 2012	Feb. 28, 2011	Feb. 28, 2010
Net income	$ 25,649	$ 23,031	$ 22,483
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	10,295	7,865	7,694
Bad debt expense	1,771	1,022	221
Equity in income of equity investee	(4,035)	(2,905)	(1,657)
Distribution of income from equity investees	1,906	1,413	2,199
Deferred income tax (benefit) expense, net	4,075	(13,566)	1,594
Loss on disposal of property, plant and equipment	237	64	32
Non-cash compensation adjustment	(139)	717	1,696
Non-cash stock based compensation expense	1,082	1,284	1,138
Realized loss on sale of investment	0	182	0
Gain on bargain purchase	0	0	(5,447)
Impairment loss on marketable securities	1,225	1,600	1,000
Tax benefit on stock options exercised	(1,846)	0	0
Changes in operating assets and liabilities (net of assets and liabilities acquired):
Accounts receivable	(8,834)	22,462	(22,451)
Inventory	13,269	(12,007)	32,849
Receivables from vendors	4,363	2,802	1,176
Prepaid expenses and other	(8,511)	4,657	(1,890)
Investment securities-trading	357	(646)	(615)
Accounts payable, accrued expenses, accrued sales incentives and other current liabilities	12,698	(9,273)	(6,251)
Income taxes payable	6,022	3,428	(5,549)
Net cash provided by operating activities	59,584	32,130	28,222
Cash flows from investing activities:
Purchases of property, plant and equipment	(12,364)	(3,055)	(5,017)
Proceeds from distribution from an equity investee	0	0	1,304
Proceeds from repayment of notes receivable	0	0	511
Purchase of short-term investments	0	(23,981)	0
Sale of short-term investments	0	24,210	0
Sale of long-term investment	0	4,368	0
Purchase of long-term investment	0	(245)	(7,498)
Purchase of patents	0	0	348
Borrowing on short-term note	214	180	0
Purchase of acquired businesses, less cash acquired	(167,260)	(57)	(14,657)
Net cash provided by (used in) investing activities	(179,410)	1,420	(25,009)
Cash flows from financing activities:
Repayment of short-term debt	(927)	(3,950)	0
Borrowings from bank obligations	89,248	285	114
Repayments on bank obligations	(55,765)	(1,479)	(1,452)
Principal payments on capital lease obligation	(102)	(180)	22
Proceeds from exercise of stock options and warrants	392	932	84
Reissue of treasury stock	7	10	10
Tax expense on stock options exercised	1,846	0	0
Net cash (used in) provided by financing activities	34,699	(4,382)	(1,222)
Effect of exchange rate changes on cash	103	(49)	(1,984)
Net increase in cash and cash equivalents	(85,024)	29,119	7
Cash and cash equivalents	13,606	98,630	69,511
Supplemental Cash Flow Information:
Interest, excluding bank charges	3,520	2,138	1,310
Income taxes (net of refunds)	$ 1,499	$ 1,257	$ (7,838)