Consolidated Condensed Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
May 31, 2012	May 31, 2011
Cash provided (used) by operating activities:
Net income	$ 23,472	$ 24,605
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization	9,100	7,094
Provision for doubtful receivables	(168)	227
Share-based compensation	1,602	466
Gain on the sale of property and equipment	(4)	(24)
Realized and unrealized loss on investments		56
Deferred income taxes and tax credits	(1,804)	1,373
Changes in operating capital:
Receivables	7,187	(8,634)
Inventories	(13,742)	(11,004)
Prepaid expenses and other current assets	(675)	(2,862)
Other assets and liabilities, net	(779)	(543)
Accounts payable	3,066	4,224
Accrued expenses and other current liabilities	(18,206)	(11,002)
Accrued income taxes	(28)	447
Net cash provided by operating activities	9,021	4,423
Cash provided (used) by investing activities:
Capital and intangible asset expenditures	(3,368)	(2,036)
Proceeds from the sale of property and equipment	7	24
Proceeds from note receivable related to land sale	737
Proceeds from sale of investments		3,050
Net cash provided (used) by investing activities	(2,624)	1,038
Cash provided (used) by financing activities:
Proceeds from line of credit	59,950	142,700
Repayment of line of credit	(73,050)	(160,500)
Payments of financing costs	(28)	(24)
Proceeds from exercise of stock options and employee stock purchases, including tax benefits	5,537	1,182
Directors' stock repurchased	(37)
Share-based compensation tax benefit	265	25
Net cash used by financing activities	(7,363)	(16,617)
Net decrease in cash and cash equivalents	(966)	(11,156)
Cash and cash equivalents, beginning balance	21,846	27,193
Cash and cash equivalents, ending balance	$ 20,880	$ 16,037

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Includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Entity may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Compensating balance arrangements that do not legally restrict the withdrawal or usage of cash amounts may be reported as Cash and Cash Equivalents, while legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or company statements of intention with regard to particular deposits are not generally reported as cash and cash equivalents. Includes cash and cash equivalents associated with the entity's continuing operations. Excludes cash and cash equivalents associated with the disposal group (and discontinued operation).