Note 11 - Discontinued Operations - Restructuring Charges (Details) - Consolidation of Nelco Products, Inc. and Neltec, Inc. [Member] $ in Thousands	6 Months Ended
	Aug. 30, 2020 USD ($)
Accrued, Beginning Balance	$ 432
Current Period Charges	284
Cash Payments	(649)
Non-Cash Charges
Accrued, Ending Balance	67
Total Costs Accrued to Date	5,807
Total Expected Costs	5,943
Facility Lease Costs [Member]
Accrued, Beginning Balance	432
Current Period Charges	24
Cash Payments	(389)
Non-Cash Charges
Accrued, Ending Balance	67
Total Costs Accrued to Date	2,953
Total Expected Costs	3,079
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
Equipment Removal [Member]
Accrued, Beginning Balance
Current Period Charges	224
Cash Payments	(224)
Non-Cash Charges
Accrued, Ending Balance
Total Costs Accrued to Date	810
Total Expected Costs	816
Other Restructuring [Member]
Accrued, Beginning Balance
Current Period Charges	36
Cash Payments	(36)
Non-Cash Charges
Accrued, Ending Balance
Total Costs Accrued to Date	963
Total Expected Costs	$ 967