Note 11 - Discontinued Operations - Restructuring Charges (Details) - Consolidation of Nelco Products, Inc. and Neltec, Inc. [Member] $ in Thousands	9 Months Ended
	Nov. 29, 2020 USD ($)
Accrued, Beginning Balance	$ 432
Current Period Charges	427
Cash Payments	(851)
Non-Cash Charges
Accrued, Ending Balance	8
Total Costs Accrued to Date	5,939
Total Expected Costs	5,939
Facility Lease Costs [Member]
Accrued, Beginning Balance	432
Current Period Charges	151
Cash Payments	(580)
Non-Cash Charges
Accrued, Ending Balance	3
Total Costs Accrued to Date	3,080
Total Expected Costs	3,080
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	229
Cash Payments	(224)
Non-Cash Charges
Accrued, Ending Balance	5
Total Costs Accrued to Date	815
Total Expected Costs	815
Other Restructuring [Member]
Accrued, Beginning Balance
Current Period Charges	47
Cash Payments	(47)
Non-Cash Charges
Accrued, Ending Balance
Total Costs Accrued to Date	963
Total Expected Costs	$ 963