Note 20 - Accumulated Other Comprehensive Loss - Changes in Accumulated Other Comprehensive Loss by Component (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Balance		$ 340,558
Net current period other comprehensive income (loss)		(5,190)	$ 4,509	$ 2,317
Other comprehensive income (loss)		(5,190)	4,509	2,317
Balance		360,576	340,558
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Balance		(16,423)	(23,107)	(14,911)
Other comprehensive income (loss) before reclassifications		(5,077)	7,221	(7,391)
Amounts reclassified from accumulated other comprehensive income (loss)		(466)	(537)	(805)
Net current period other comprehensive income (loss)		(5,543)	6,684	(8,196)
Other comprehensive income (loss)		(5,543)	6,684	(8,196)
Balance		(21,966)	(16,423)	(23,107)
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]
Balance		3,960	5,539	(116)
Other comprehensive income (loss) before reclassifications		(1,231)	(1,579)	5,655
Amounts reclassified from accumulated other comprehensive income (loss)		0	0	0
Net current period other comprehensive income (loss)		(1,231)	(1,579)	5,655
Other comprehensive income (loss)		(1,231)	(1,579)	5,655
Balance		2,729	3,960	5,539
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member]
Balance		19	18	29
Other comprehensive income (loss) before reclassifications		2	1	(11)
Amounts reclassified from accumulated other comprehensive income (loss)		0	0	0
Net current period other comprehensive income (loss)		2	1	(11)
Other comprehensive income (loss)		2	1	(11)
Balance		21	19	18
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Balance		407	1,004	(3,865)
Other comprehensive income (loss) before reclassifications		1,644	(542)	5,119
Amounts reclassified from accumulated other comprehensive income (loss)	[1]	(62)	(55)	(250)
Net current period other comprehensive income (loss)		1,582	(597)	4,869
Other comprehensive income (loss)		1,582	(597)	4,869
Balance		1,989	407	1,004
AOCI Attributable to Parent [Member]
Balance		(12,037)	(16,546)	(18,863)
Other comprehensive income (loss) before reclassifications		(4,662)	5,101	3,372
Amounts reclassified from accumulated other comprehensive income (loss)		(528)	(592)	(1,055)
Net current period other comprehensive income (loss)		(5,190)	4,509	2,317
Other comprehensive income (loss)		(5,190)	4,509	2,317
Balance		$ (17,227)	$ (12,037)	$ (16,546)

[1] This reclassification relates to the amortization of prior service costs and gains/losses associated with the Company's SERP plan. This expense is reflected in other expense, net on the accompanying consolidated statement of operations.