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Note 6 - Fair Value Measurements (Details Textual) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Derivative Asset	$ 5,590	$ 5,898
Long-Term Debt, Fair Value	59,900	95,000
Long-Term Debt, Gross	60,000	95,000
Fair Value, Nonrecurring [Member]
Assets, Fair Value Disclosure, Total	0	0
Foreign Exchange Forward [Member]
Derivative Assets (Liabilities), at Fair Value, Net	(700)	400
Interest Rate Swap [Member]
Derivative Asset	5,400	5,500
Investments Held in Rabbi Trust [Member]
Debt Securities, Available-for-Sale	$ 100	$ 100

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