Note 10 - Income Taxes (Details Textual) - USD ($) $ in Thousands				3 Months Ended			9 Months Ended
	Jul. 28, 2023	Jun. 27, 2023	Jun. 26, 2023	Sep. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Effective Income Tax Rate Reconciliation, Percent				24.10%		26.10%	2.40%	28.50%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent					21.00%
Income Tax Expense (Benefit)				$ (7,134)		$ 7,227	$ (2,205)	$ 23,520
Kenya [Member]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	30.00%	30.00%	37.50%	30.00%
Income Tax Expense (Benefit)				$ (9,400)