Note 7 - Investments in Foreign Joint Ventures - Summary of Equity Method Investment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Total current assets	$ 17,473	$ 14,972
Total assets	85,584	81,299
Total liabilities	18,576	19,487
Total joint ventures’ equity	67,008	61,812	$ 59,867
Total liabilities and equity	85,584	81,299
Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member]
Revenues	117,459	102,981
Gross profit	14,458	12,544
Earnings	4,101	4,418
Total current assets	124,253	135,217
Total non-current assets	9,496	3,003
Total assets	133,749	138,220
Total liabilities	101,562	104,760
Total joint ventures’ equity	32,187	33,460
Total liabilities and equity	$ 133,749	$ 138,220