Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Deferred tax assets:
Net operating loss carryforwards	$ 78,077	$ 36,702
Foreign tax credit carryforwards	4,955	4,955
Stock-based compensation	9,643	0
Accruals and Reserves	6,584	5,433
Depreciation and amortization	1,633	354
Allowance for uncollectible accounts	66	1,383
Total deferred tax assets	100,958	48,827
Less: valuation allowance	(89,903)	(41,111)
Deferred tax assets, net of valuation allowance	11,055	7,716
Deferred tax liabilities:
Commissions	(4,771)	(3,323)
Net deferred tax assets	$ 6,284	$ 4,393