Note 11 - Discontinued Operations - Restructuring Charges (Details) - Consolidation of Nelco Products, Inc. and Neltec, Inc. [Member] $ in Thousands	6 Months Ended
	Sep. 01, 2019 USD ($)
Accrued, Beginning Balance	$ 1,324
Current Period Charges	115
Cash Payments	(500)
Non-Cash Charges
Accrued, Ending Balance	939
Total Costs Accrued to Date	4,805
Total Expected Costs	5,500
Facility Lease Costs [Member]
Accrued, Beginning Balance	1,324
Current Period Charges	25
Cash Payments	(410)
Non-Cash Charges
Accrued, Ending Balance	939
Total Costs Accrued to Date	2,854
Total Expected Costs	2,854
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	15
Cash Payments	(15)
Non-Cash Charges
Accrued, Ending Balance
Total Costs Accrued to Date	15
Total Expected Costs	700
Other Restructuring [Member]
Accrued, Beginning Balance
Current Period Charges	75
Cash Payments	(75)
Non-Cash Charges
Accrued, Ending Balance
Total Costs Accrued to Date	855
Total Expected Costs	$ 865