Income Taxes - Components of Net Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Deferred tax assets:
Accruals and reserves	$ 824	$ 335
Net operating loss carryforwards	121,343	137,706
Deferred revenue	3,192	15,726
Depreciation	4,304	836
Research and development credits	13,697	14,116
Capitalized research and development	90,965	63,234
Operating lease liabilities	18,164	24,012
Stock-based compensation	12,290	9,113
Tax credits	0	1,148
Other	3,369	1,170
Gross deferred tax assets	268,148	267,396
Valuation allowance	(229,283)	(231,661)
Total deferred tax assets	38,865	35,735
Deferred tax liabilities:
Operating lease ROU assets	(10,329)	(11,307)
Deferred contract acquisition and fulfillment costs	(26,277)	(24,251)
Other	(2,944)	(65)
Total deferred tax liabilities	(39,550)	(35,623)
Net deferred tax liabilities		$ 112
Net deferred tax liabilities	$ (685)