Note 10 - Pension and Postretirement Benefits - Statement of Financial Position as of Fiscal Year End (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 03, 2022	Dec. 31, 2021	Nov. 27, 2021
Non-current liabilities	$ (52,561)		$ (71,651)
Pension Plan [Member]
Prepaid postretirement costs		$ 86,616		$ 90,946
Pension Plan [Member] | UNITED STATES
Prepaid postretirement costs		69,826		66,157
Current liabilities		(1,248)		(1,342)
Non-current liabilities		(11,666)		(16,216)
Ending balance		56,912		48,599
Pension Plan [Member] | Foreign Plan [Member]
Prepaid postretirement costs		16,790		24,772
Current liabilities		(1,727)		(1,795)
Non-current liabilities		(28,006)		(44,753)
Ending balance		(12,943)		(21,776)
Other Postretirement Benefits Plan [Member]
Prepaid postretirement costs		98,848		107,323
Current liabilities		(218)		(227)
Non-current liabilities		(2,021)		(2,657)
Ending balance		$ 96,609		$ 104,439