Note 9 - Restructuring Charges - Restructuring Charges (Details) - USD ($) $ in Thousands	3 Months Ended
	May 30, 2021	May 31, 2020
Current Period Charges	$ 14
Closure of Park Advanced Composite Materials, Inc. Business Unit [Member]
Accrued, Beginning Balance	252
Current Period Charges	14
Cash Payments	(28)
Non-Cash Charges	(22)
Accrued, Ending Balance	216
Total Costs Accrued to Date	1,584
Facility Lease Costs [Member] | Closure of Park Advanced Composite Materials, Inc. Business Unit [Member]
Accrued, Beginning Balance	252
Current Period Charges
Cash Payments	(14)
Non-Cash Charges	(22)
Accrued, Ending Balance	216
Total Costs Accrued to Date	252
Asset Impairment [Member] | Closure of Park Advanced Composite Materials, Inc. Business Unit [Member]
Accrued, Beginning Balance
Current Period Charges
Cash Payments
Non-Cash Charges
Accrued, Ending Balance
Total Costs Accrued to Date	1,318
Other Restructuring [Member] | Closure of Park Advanced Composite Materials, Inc. Business Unit [Member]
Accrued, Beginning Balance
Current Period Charges	14
Cash Payments	(14)
Non-Cash Charges
Accrued, Ending Balance
Total Costs Accrued to Date	$ 14