Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Nov. 30, 2014		Dec. 01, 2013
Cash flows from operating activities:
Net earnings	$ 15,202		$ 17,695
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	2,653		2,975
Stock-based compensation	912		787
Benefit for deferred income taxes	(1,900)
Amortization of bond premium	658		886
Changes in operating assets and liabilities	3,436		332
Net cash provided by operating activities	20,961		22,675
Cash flows from investing activities:
Purchase of property, plant and equipment	(381)		(773)
Purchases of marketable securities	(75,979)		(198,485)
Proceeds from sales and maturities of marketable securities	77,619		124,417
Net cash provided by (used in) investing activities	1,259		(74,841)
Cash flows from financing activities:
Dividends paid	(6,274)		(6,252)
Proceeds from exercise of stock options	1,609		987
Tax benefits from stock-based compensation	38
Purchase of treasury stock	(172)
Net cash used in financing activities	(4,799)		(5,265)
Change in cash and cash equivalents before effect of exchange rate changes	17,421		(57,431)
Effect of exchange rate changes on cash and cash equivalents	(315)		(7)
Change in cash and cash equivalents	17,106		(57,438)
Cash and cash equivalents, beginning of period	133,150	[1]	186,117
Cash and cash equivalents, end of period	150,256		128,679
Supplemental cash flow information:
Cash paid during the period for income taxes, net of refunds	3,779		4,465
Cash paid during the period for interest	$ 924		$ 486

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