Note 13 - Accumulated Other Comprehensive Loss - Changes in Accumulated Other Comprehensive Loss by Component (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Balance		$ 215,356	$ 186,323	$ 208,743	$ 185,799
Other comprehensive (loss) income		(5,707)	2,640	(3,878)	209
Balance		225,995	196,598	225,995	196,598
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Balance				(14,911)
Other comprehensive (loss) income before reclassifications				(8,053)
Amount reclassified from accumulated other comprehensive loss				73
Other comprehensive (loss) income				(7,980)
Balance		(22,891)		(22,891)
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]
Balance				(116)
Other comprehensive (loss) income before reclassifications				3,733
Amount reclassified from accumulated other comprehensive loss				259
Other comprehensive (loss) income				3,992
Balance		3,876		3,876
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member]
Balance				29
Other comprehensive (loss) income before reclassifications				(12)
Amount reclassified from accumulated other comprehensive loss				0
Other comprehensive (loss) income				(12)
Balance		17		17
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Balance				(3,865)
Other comprehensive (loss) income before reclassifications				(6)
Amount reclassified from accumulated other comprehensive loss	[1]			128
Other comprehensive (loss) income				122
Balance		(3,743)		(3,743)
AOCI Attributable to Parent [Member]
Balance		(17,034)	(20,494)	(18,863)	(18,063)
Other comprehensive (loss) income before reclassifications				(4,338)
Amount reclassified from accumulated other comprehensive loss				460
Other comprehensive (loss) income				(3,878)
Balance		$ (22,741)	$ (17,854)	$ (22,741)	$ (17,854)

[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) income, net on the accompanying condensed consolidated statements of operations.