Note K - Notes Payable and Long-term Debt - Schedule of Notes Payable and Long-term Debt (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Long-term debt	$ 23,197	$ 58,242
Less debt issuance costs, net	0	(1,168)
Grand total	23,197	57,074
Less current portion	(23,197)	(57,074)
Non-current portion	0	0
Bank acceptance notes issued to vendors with a zero percent interest rate	15,482	12,337
CIT Northbridge Credit, LLC [Member] | Revolving Credit Facility [Member] | Loan Security and Guarantee Agreement [Member]
Long-term debt	0	25,000
SPD Bank [Member] | Revolving Credit Facility [Member]
Long-term debt	12,608	13,102
China Zheshang Bank Co., Ltd [Member] | Revolving Credit Facility [Member] | The ¥200M Credit Facility [Member]
Long-term debt	$ 10,589	$ 20,140