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Income Taxes - Schedule of Effective Income Tax Rate Reconciliation (Details) | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Income Tax Disclosure [Abstract] |  |  |
Federal statutory rate | 21.00% | 21.00% | 21.00%
State income taxes, net of federal benefit | 2.90% | 2.00% | 0.90%
Permanent book/tax differences | (0.60%) | 0.20% | (0.20%)
Stock‑based compensation | (5.20%) | (2.30%) | (2.40%)
Non-deductible officer compensation | 4.60% | 0.00% | 0.00%
Expenses associated with IPO | 3.30% | 0.00% | 0.00%
Tax credits | (2.10%) | (3.60%) | (3.30%)
Foreign tax rate differential | (2.00%) | (2.80%) | (4.20%)
Income tax reserves | (0.50%) | 0.90% | (0.20%)
Intercompany sales of certain operating assets | 0.00% | 0.00% | (41.10%)
Net tax on foreign earnings (GILTI/FDII/FTC) | 0.005 | 0.061 | 0
Other | 1.10% | (3.00%) | (0.20%)
U.S. tax reform | 0 | 0 | 0.038
Effective income tax rate | 23.00% | 18.50% | (25.90%)

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