INCOME TAXES - Schedule of Company's Deferred Tax Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Deferred tax assets:
Net operating loss carryforwards	$ 159,740	$ 164,276
Research and development tax credit carryforwards	35,260	27,679
Stock-based compensation	6,691	5,321
Deferred revenue	61,114	20,681
Fixed assets	10,130	10,525
Lease liability	11,279	10,251
Accruals and reserves	1,119	430
Other	106	308
Total deferred tax asset	285,439	239,471
Valuation allowance	259,820	214,351
Deferred tax assets	25,619	25,120
Liabilities:
Intangible assets	(13,856)	(14,321)
Operating lease right-of-use assets	(17,348)	(17,510)
Deferred tax liabilities	(31,204)	(31,831)
Total net deferred tax liabilities	$ (5,585)	$ (6,711)