Note 4 - Income Taxes (Details Textual) - USD ($) $ in Thousands	2 Months Ended	12 Months Ended
	Mar. 01, 2020	Mar. 01, 2020	Mar. 01, 2020	Mar. 03, 2019	Feb. 25, 2018	Mar. 03, 2020	Feb. 25, 2019	Feb. 26, 2017
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent		21.00%		21.00%	32.90%
Tax Cuts and Jobs Act, Transition Tax for Accumulated Foreign Earnings, Income Tax Expense					$ 23,139
One-time Transition Tax Provision, Current Income Tax Expense on Untaxed Foreign Earnings, Payment Period (Year)					8 years
Tax Cuts and Jobs Act, Transition Tax for Accumulated Foreign Earnings, Liability, Total					$ 21,887
Tax Cuts and Jobs Act, Transition Tax for Accumulated Foreign Earnings, Liability, Current					1,751
Tax Cuts and Jobs Act, Transition Tax for Accumulated Foreign Earnings, Liability, Noncurrent					20,136
Deferred Tax Liability Reversed					44,309
Income Tax Benefit, Reversal of Deferred Tax Liability					18,456
Income Tax Expense (Benefit), Continuing Operations, Adjustment of Deferred Tax (Asset) Liability					1,963
Undistributed Earnings, Basic, Total		$ 25,000
Foreign Earnings Repatriated		100,216		$ 113,600	135,300
Effective Income Tax Rate Reconciliation, Operating Loss Carryforwards, Amount	$ 64	64	$ 64
Effective Income Tax Rate Reconciliation, Tax Credit, Research, Amount	191
Deferred Tax Assets, Valuation Allowance, Total						$ 3,175	$ 2,755
Unrecognized Tax Benefits, Ending Balance	4,164	4,164	4,164	937	$ 314
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued, Total	193	193	193	79
Other Noncurrent Liabilities [Member]
Unrecognized Tax Benefits, Ending Balance	4,356	4,356	4,356	1,016
Research Tax Credit Carryforward [Member]
Tax Credit Carryforward, Amount	45	45	45	236
State and Local Jurisdiction [Member]
Operating Loss Carryforwards, Total	2,515	2,515	2,515	3,161
State and Local Jurisdiction [Member] | Arizona Department of Revenue [Member]
Tax Credit Carryforward, Amount	576	576	576	135
State and Local Jurisdiction [Member] | New York State Division of Taxation and Finance [Member] | Nelco Technology Zhuhai FTZ Ltd [Member]
Deferred Tax Assets, Valuation Allowance, Total	3,175	3,175	$ 3,175
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount				420
State and Local Jurisdiction [Member] | Minimum [Member]
Operating Loss Carryforwards Expiration Year			2021
State and Local Jurisdiction [Member] | Maximum [Member]
Operating Loss Carryforwards Expiration Year			2039
Foreign Tax Authority [Member]
Operating Loss Carryforwards, Total	$ 7,798	$ 7,798	$ 7,798	$ 7,862