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Income Tax Contingencies (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2021 | Mar. 31, 2020 | Dec. 31, 2020
Income Tax Disclosure [Abstract] |  |  |
Net interest and penalties expense | $ (231) | $ 308 |
Accrued interest | 3,336 |  | $ 3,432
Accrued penalties | 1,384 |  | 1,645
Unrecognized tax benefits related to uncertain tax positions | 133,964 |  | 135,910
The amount of unrecognized tax benefits that, if recognized, would affect our effective tax rate | $ 132,836 |  | $ 134,473

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