Note 11 - Discontinued Operations - Restructuring Charges (Details) - Consolidation of Nelco Products, Inc. and Neltec, Inc. [Member] $ in Thousands	3 Months Ended
	Jun. 02, 2019 USD ($)
Accrued, Beginning Balance	$ 1,324
Current Period Charges	33
Cash Payments	(225)
Non-Cash Charges
Accrued, Ending Balance	1,132
Total Costs Accrued to Date	4,722
Total Expected Costs	5,500
Facility Lease Costs [Member]
Accrued, Beginning Balance	1,324
Current Period Charges	13
Cash Payments	(205)
Non-Cash Charges
Accrued, Ending Balance	1,132
Total Costs Accrued to Date	2,842
Total Expected Costs	2,842
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
Cash Payments
Non-Cash Charges
Accrued, Ending Balance
Total Costs Accrued to Date
Total Expected Costs	700
Other Restructuring [Member]
Accrued, Beginning Balance
Current Period Charges	20
Cash Payments	(20)
Non-Cash Charges
Accrued, Ending Balance
Total Costs Accrued to Date	799
Total Expected Costs	$ 877