Note 3 - Divestiture of Subsidiary - Assets and Liabilities Included in Sale (Details) - Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] - Bel Stewart s.r.o. [Member] - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Jun. 01, 2023
Cash and cash equivalents	$ 2,072
Accounts receivable	1,030
Inventories	1,310
Property, plant and equipment	326
Other assets	48
Accounts payable	441
Accrued expenses	126
Income taxes payable	100
Other current liabilities	13
Other long-term liabilities	23
Total net assets transferred	4,083
Consideration received	5,063	$ 5,100
Gain on sale recognized	$ 980