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Note 3 - Trade Accounts Receivable (Tables) | 12 Months Ended
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Dec. 31, 2024
Notes Tables |
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] |
|  | 2024 |  |  | 2023 |
|  | (in thousands) |
Billed |  | $ | 78,521 |  |  | $ | 75,653 |
Unbilled |  |  | 8,082 |  |  |  | 12,668 |
Current estimated credit losses |  |  | (6,636 | ) |  |  | (7,717 | )
Total accounts receivable—net |  | $ | 79,967 |  |  | $ | 80,604 |
Financing Receivable, Current, Allowance for Credit Loss [Table Text Block] |
|  | 2024 |  |  | 2023 |  |  | 2022 |
|  | (in thousands) |
Balance—beginning of year |  | $ | 7,717 |  |  | $ | 5,381 |  |  | $ | 4,526 |
Provision for bad debts |  |  | 3,074 |  |  |  | 2,396 |  |  |  | 917 |
Charge-offs |  |  | (4,155 | ) |  |  | (60 | ) |  |  | (62 | )
Recoveries |  |  | - |  |  |  | - |  |  |  | - |
Balance—end of year |  | $ | 6,636 |  |  | $ | 7,717 |  |  | $ | 5,381 |

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