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Note 18 - Accumulated Other Comprehensive Loss - Components of Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Balance	$ 318,274	$ 283,383	$ 269,626
Net current period adjustments to Other comprehensive income	(171)	893	184
Balances, December 31, 2022	340,360	318,274	283,383
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Balance	(1,532)	(1,487)
Other comprehensive income (loss) before reclassifications	338	41
Amounts reclassified from Accumulated other comprehensive loss	1	(86)
Net current period adjustments to Other comprehensive income	339	(45)
Balances, December 31, 2022	(1,193)	(1,532)	(1,487)
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member] | Foreign Exchange Forward [Member]
Balance	94	(195)
Other comprehensive income (loss) before reclassifications	(115)	(100)
Amounts reclassified from Accumulated other comprehensive loss	8	389
Net current period adjustments to Other comprehensive income	(107)	289
Balances, December 31, 2022	(13)	94	(195)
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member] | Interest Rate Swap [Member]
Balance	649	0
Other comprehensive income (loss) before reclassifications	142	678
Amounts reclassified from Accumulated other comprehensive loss	(545)	(29)
Net current period adjustments to Other comprehensive income	(403)	649
Balances, December 31, 2022	246	649	0
AOCI Attributable to Parent [Member]
Balance	(789)	(1,682)	(1,866)
Other comprehensive income (loss) before reclassifications	365	619
Amounts reclassified from Accumulated other comprehensive loss	(536)	274
Net current period adjustments to Other comprehensive income	(171)	893
Balances, December 31, 2022	$ (960)	$ (789)	$ (1,682)

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