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Income Taxes - Narrative (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021 | Dec. 31, 2021
Income Tax Contingency |  |  |  |  |
Income tax expense | $ 2,037 | $ 935 | $ 3,578 | $ 1,157 |
Deferred income tax expense |  |  | 2,304 | 758 |
TEXAS |  |  |  |  |
Income Tax Contingency |  |  |  |  |
State income taxes | 80 | 61 | 256 | 180 |
MTI |  |  |  |  |
Income Tax Contingency |  |  |  |  |
Income tax expense | $ 1,957 | $ 874 | $ 3,322 | $ 977 |
Effective income tax rate (percentage) | 21.58% | 40.22% | 21.77% | 38.73% |
Current federal income tax expense | $ 404 | $ 108 | $ 723 | $ 123 |
State income tax expense | 170 | 83 | 295 | 96 |
Deferred income tax expense | 1,383 | $ 683 | 2,304 | $ 758 |
Deferred tax asset | $ 17,517 |  | $ 17,517 |  | $ 19,821

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