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Income Taxes (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020 | Dec. 31, 2020
Valuation allowance |  |  |  |  |
Income tax provision | $ 3,842 | $ 2,271 | $ 5,563 | $ 3,312 |
Increase in income tax expense | 1,500 |  | 2,300 |  |
Increase in pretax income | 7,200 |  | 13,100 |  |
Deferred tax assets, net | 51,386 |  | 51,386 |  | $ 57,851
Deferred tax assets valuation allowance | $ 9,100 |  | $ 9,100 |  |
Maximum |  |  |  |  |
Valuation allowance |  |  |  |  |
Statutory income tax rate (as a percent) | 21.00% | 21.00% | 21.00% | 21.00% |

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