INCOME TAXES - Components of Net Deferred Tax Asset and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Deferred tax assets:
Net operating loss carryforwards	$ 133,164	$ 88,129
Accruals and reserves	38,526	26,309
Interest expense carryforward	7,759	3,464
Software revenue	336	0
Convertible senior notes	8,362	0
Depreciation	3,764	4,795
Tax credit carryforwards	40,590	31,556
Other	1,015	370
Total deferred tax assets	233,516	154,623
Valuation allowances	(25,855)	(23,409)
Total net deferred tax assets	207,661	131,214
Deferred tax liabilities:
Capped call transactions	(14,961)	(20,858)
Convertible senior notes	0	(6,473)
Software revenue	0	(11,477)
Intangibles	(12,044)	(4,338)
Total deferred tax liabilities	(27,005)	(43,146)
Deferred tax assets, net	$ 180,656	$ 88,068