Note 7 - Restructuring Charges - Restructuring Charges (Details) - USD ($) $ in Thousands	3 Months Ended
	May 27, 2018	May 28, 2017
Current Period Charges	$ 183	$ 1,361
Consolidation of Nelco Products, Inc. and Neltec, Inc. [Member]
Accrued, Beginning Balance	2,238
Current Period Charges	52	$ 1,250
Cash Payments	(325)
Non-Cash Charges
Accrued, Ending Balance	1,965
Total Costs Accrued to Date	4,481
Total Expected Costs	5,500
Consolidation of Nelco Products, Inc. and Neltec, Inc. [Member] | Facility Lease Costs [Member]
Accrued, Beginning Balance	2,238
Current Period Charges
Cash Payments	(273)
Non-Cash Charges
Accrued, Ending Balance	1,965
Total Costs Accrued to Date	2,749
Total Expected Costs	2,749
Consolidation of Nelco Products, Inc. and Neltec, Inc. [Member] | Employee Severance [Member]
Accrued, Beginning Balance
Current Period Charges
Cash Payments
Non-Cash Charges
Accrued, Ending Balance
Total Costs Accrued to Date	1,081
Total Expected Costs	1,081
Consolidation of Nelco Products, Inc. and Neltec, Inc. [Member] | Equipment Removal [Member]
Accrued, Beginning Balance
Current Period Charges
Cash Payments
Non-Cash Charges
Accrued, Ending Balance
Total Costs Accrued to Date
Total Expected Costs	700
Consolidation of Nelco Products, Inc. and Neltec, Inc. [Member] | Other Restructuring [Member]
Accrued, Beginning Balance
Current Period Charges	52
Cash Payments	(52)
Non-Cash Charges
Accrued, Ending Balance
Total Costs Accrued to Date	651
Total Expected Costs	$ 970