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Accounts Receivable (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019 | Dec. 31, 2019
Accounts Receivable Additional Disclosures [Abstract] |  |  |  |  |
Allowance doubtful accounts, receivables | $ 1,176 |  | $ 1,176 |  | $ 1,073
Reserve for (income) from uncollectable accounts | $ (63) | $ (119) | $ 221 | $ (34) |

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