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Note 2 - Allowance for Doubtful Accounts Receivable (Tables) | 12 Months Ended
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Dec. 31, 2022
Notes Tables |
Financing Receivable, Allowance for Credit Loss [Table Text Block] |
|  | Years Ended December 31, |
|  | 2022 |  |  | 2021 |
Balance at the beginning of year |  | $ | 6,393 |  |  | $ | 7,667 |
Provision for bad debts |  |  | 2,891 |  |  |  | 2,260 |
Charge-offs |  |  | (1,686 | ) |  |  | (3,653 | )
Recoveries |  |  | 24 |  |  |  | 119 |
Balance at the end of year |  | $ | 7,622 |  |  | $ | 6,393 |

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