Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Aug. 31, 2014		Sep. 01, 2013
Cash flows from operating activities:
Net earnings	$ 13,171		$ 12,974
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	1,763		1,963
Stock-based compensation	605		547
Amortization of bond premium	530		680
Changes in operating assets and liabilities	2,081		(3,199)
Net cash provided by operating activities	18,150		12,965
Cash flows from investing activities:
Purchase of property, plant and equipment	(232)		(613)
Purchases of marketable securities	(75,978)		(170,696)
Proceeds from sales and maturities of marketable securities	41,936		85,530
Net cash used in investing activities	(34,274)		(85,779)
Cash flows from financing activities:
Dividends paid	(4,179)		(4,167)
Proceeds from exercise of stock options	1,580		297
Net cash used in financing activities	(2,599)		(3,870)
Change in cash and cash equivalents before effect of exchange rate changes	(18,723)		(76,684)
Effect of exchange rate changes on cash and cash equivalents	12		502
Change in cash and cash equivalents	(18,711)		(76,182)
Cash and cash equivalents, beginning of period	133,150	[1]	186,117
Cash and cash equivalents, end of period	114,439		109,935
Supplemental cash flow information:
Cash paid during the period for income taxes, net of refunds	459		2,265
Cash paid during the period for interest	$ 692		$ 364

[1] The balance sheet at March 2, 2014 has been derived from the audited financial statements at that date.