v3.23.1

Note 6 - Accounts Receivable - Summary of Accounts Receivable (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | --- | ---
Gross accounts receivable | $ 70,925 | $ 86,625 |
Unearned income | (3,354) | (4,033) |
Allowance for doubtful accounts | (13,619) | (11,997) | $ (18,490)
Accounts Receivable, after Allowance for Credit Loss, Total | 53,952 | 70,595 |
Current trade receivables | 37,262 | 46,918 |
Current unearned interest income | (2,397) | (2,678) |
Long-term trade receivables | 20,044 | 27,710 |
Long-term unearned interest income | $ (957) | $ (1,355) |

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