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Note 12 - Employee Benefit Plans (Details Textual) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay 6.00% 6.00%
Defined Contribution Plan, Employer Discretionary Contribution Amount $ 1.1 $ 1.1