Note 13 - Accumulated Other Comprehensive Loss - Changes in Accumulated Other Comprehensive Loss by Component (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2023	Mar. 31, 2022
Balance		$ 262,346	$ 208,743
Other comprehensive income		1,118	1,829
Balance		278,063	215,356
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Balance		(23,107)
Other comprehensive (loss) income before reclassifications		1,617
Amount reclassified from accumulated other comprehensive loss		381
Other comprehensive income		1,998
Balance		(21,109)
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]
Balance		5,539
Other comprehensive (loss) income before reclassifications		(408)
Amount reclassified from accumulated other comprehensive loss		(486)
Other comprehensive income		(894)
Balance		4,645
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member]
Balance		18
Other comprehensive (loss) income before reclassifications		1
Amount reclassified from accumulated other comprehensive loss		0
Other comprehensive income		1
Balance		19
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Balance		1,004
Other comprehensive (loss) income before reclassifications		(1)
Amount reclassified from accumulated other comprehensive loss	[1]	14
Other comprehensive income		13
Balance		1,017
AOCI Attributable to Parent [Member]
Balance		(16,546)	(18,863)
Other comprehensive (loss) income before reclassifications		1,209
Amount reclassified from accumulated other comprehensive loss		(91)
Other comprehensive income		1,118
Balance		$ (15,428)	$ (17,034)

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