Income Taxes - Schedule of Tax Effects of Temporary Differences that Give Rise to Significant Portions of Deferred Income Tax Assets and Deferred Income Tax Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Deferred income tax assets:
Net operating loss carryforwards	$ 67,985	$ 51,498	$ 26,119
Accrued expenses	10,309	7,918	6,164
Deferred Revenue	10,632	394	500
Lease Liabilities	18,773	2,165	433
Credits	14,559	8,752	7,468
Gross deferred tax assets	122,258	70,727	40,684
Less valuation allowance	(95,304)	(58,155)	(35,251)
Net deferred tax assets	26,954	12,572	5,433
Deferred income tax liabilities:
Unrealized gain on equity investments	(8,545)	(10,185)	(1,984)
Prepaid expenses	(969)	(889)	(441)
Depreciation and amortization	$ (17,440)	$ (1,498)	$ (3,008)