Income Taxes - Components of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Deferred tax assets:
Net operating losses	$ 134,503	$ 89,053
Deferred revenue	13,598	13,454
Stock-based compensation	14,157	11,846
Tax credits	15,142	11,565
Leases	12,929	15,238
Accrued compensation	1,600	1,271
Interest expense	2,013	0
Other	231	379
Total deferred tax assets	194,173	142,806
Valuation allowance	(147,040)	(112,363)
Net deferred tax assets	47,133	30,443
Deferred tax liabilities:
Deferred commissions	(19,423)	(15,987)
Property and equipment	(13,720)	(13,257)
Intangible assets	(15,253)	(962)
Other	(486)	(398)
Total deferred tax liabilities	(48,882)	(30,604)
Net deferred tax liabilities	$ (1,749)	$ (161)