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Income Taxes - Reconciliation of Income Tax Provision (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Reconciliation of income tax provision: |  |  |
Provision at United States federal statutory rate | $ 3,063 | $ 1,870 | $ 954
U.S. federal valuation allowance | (2,363) | 1,706 | (2,493)
U.S. state and local valuation allowance | 349 | 269 | 419
Net operating loss carryback at 34% tax rate | 0 | (137) | (3,205)
Effect of foreign taxes | 1,519 | 996 | 790
State and local tax expense | (391) | (237) | (372)
Other | 205 | (219) | 289
Total income taxes | $ 2,382 | $ 4,248 | $ (3,618)
Tax rate | 34.00% |  |

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