Income Taxes - Schedule of Reconciliation of Income Tax (Benefit) Expense (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Income taxes computed at Federal statutory rate	$ (63,725)	$ 17,425	$ 10,993
State income taxes	(2,768)	988	(154)
Stock-based compensation	609	313	(99)
Excess tax benefits related to stock- based compensation	(19,961)	(788)	(1,276)
Research and development credits	(3,541)	(1,661)	(858)
Nondeductible officers' compensation	79,046
(Decrease) increase in valuation allowance	(293)	380
Other	806	273	(51)
Total income tax (benefit) expense	$ (9,827)	$ 16,930	$ 8,555
Effective income tax rate	3.20%	20.40%	16.30%

Income tax reconciliation nondeductible officers compensation.

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increase (decrease) in the valuation allowance for deferred tax assets.

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The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations.

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Amount of reported income tax expense (benefit) in excess of (less than) expected income tax expense (benefit) computed by applying domestic federal statutory income tax rate to pretax income (loss) from continuing operation, attributable to nondeductible expense for award under share-based payment arrangement. Includes, but is not limited to, expense determined to be nondeductible upon grant or after for award under share-based payment arrangement.

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to tax credits. Including, but not limited to, research credit, foreign tax credit, investment tax credit, and other tax credits.

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