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Note 1 - Overview and Summary of Significant Accounting Policies - Summary of Allowance for Credit Losses on Notes Receivable (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2024
Dec. 31, 2023
Allowance for credit losses $ 623 $ 263
Provision for credit losses 0 540
Writeoffs charged against the allowance   (180)
Allowance for credit losses $ 623 $ 623