Note 5 - Long-Term Debt (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended				6 Months Ended									6 Months Ended								6 Months Ended		0 Months Ended		1 Months Ended	6 Months Ended
	Aug. 31, 2014	Sep. 01, 2013	Aug. 31, 2014	Sep. 01, 2013	Mar. 02, 2014		Aug. 31, 2014 Letter of Credit [Member] PNC Bank, National Association [Member]	Feb. 12, 2014 Letter of Credit [Member] PNC Bank, National Association [Member]	Jan. 30, 2013 Letter of Credit [Member] PNC Bank, National Association [Member]	Aug. 31, 2014 Through February 28, 2015 [Member]	Aug. 31, 2014 March 1, 2015 Through February 27, 2016 [Member]	Aug. 31, 2014 February 28, 2016 Through February 25, 2017 [Member]	Aug. 31, 2014 All Periods Thereafter [Member]	Aug. 31, 2014 Through November 27, 2016 [Member] Minimum [Member]	Aug. 31, 2014 Through November 27, 2016 [Member] Maximum [Member]	Aug. 31, 2014 Special Dividend [Member] Minimum [Member]	Aug. 31, 2014 Special Dividend [Member] Maximum [Member]	Aug. 31, 2014 Installment 1 [Member]	Aug. 31, 2014 Installment 2 [Member]	Aug. 31, 2014 London Interbank Offered Rate (LIBOR) [Member] PNC Bank, National Association [Member]	Aug. 31, 2014 Federal Funds Rate [Member] PNC Bank, National Association [Member]	Aug. 31, 2014 Daily LIBOR Plus [Member] PNC Bank, National Association [Member]	Aug. 31, 2014 Minimum [Member]	Aug. 31, 2014 Maximum [Member]	Aug. 31, 2014 Nelco Products Pte. Ltd. [Member]	Feb. 12, 2014 PNC Bank, National Association [Member]	Jan. 30, 2013 PNC Bank, National Association [Member]	Mar. 03, 2013 PNC Bank, National Association [Member]	Aug. 31, 2014 PNC Bank, National Association [Member]	Aug. 31, 2014 PNC Bank, National Association [Member]	Feb. 12, 2014 PNC Bank, National Association [Member]	Jan. 30, 2013 PNC Bank, National Association [Member]
Note 5 - Long-Term Debt (Details) [Line Items]
Line of Credit Facility, Expiration Period																										4 years	5 years
Line of Credit Facility, Maximum Borrowing Capacity								$ 2,000	$ 2,000																						$ 104,000	$ 52,000
Proceeds from Lines of Credit																												52,000	52,000
Long-term Line of Credit	104,000		104,000				1,100																						52,000	52,000
Number Of Stand by Letter Of Credit Issued							2
Long-term Debt	104,000		104,000
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months	10,000		10,000
Number of Quarterly Installments																		4	8
Debt Instrument, Periodic Payment, Principal																		2,500	3,750
Debt Instrument, Basis Spread on Variable Rate																				1.10%	0.50%	1.00%
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage																														0.20%
Minimum Interest Coverage Ratio	1.10		1.10
Maximum Funded Debt Ratio										3.75	3.50	3.00	2.25
Restricted Cash and Cash Equivalents, Noncurrent	25,000		25,000		25,000	[1]																	25,000
Quick Ratio													3.25	8.00	8.50
Dividend Covenant Maximum Quarterly Dividend (in Dollars per share)																$ 1.00	$ 2.50							$ 0.10
Pledge Of Stock Percentage As Guarantee For Credit Agreement																									65.00%
Line of Credit Facility, Interest Rate at Period End	1.30%		1.30%
Interest Expense	$ 360	$ 185	$ 713	$ 356

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