DEBT - Summary of Senior Subordinated Convertible Obligations (Detail) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Convertible notes	$ 1,100,000
Convertible Notes, net of unamortized discount and deferred offering costs	1,079,077	$ 1,075,145
Total convertible debt, net	1,079,077	1,075,145
Total fair value of fixed rate convertible debt	$ 1,146,204	1,157,804
1.25% Senior Subordinated Convertible Notes Due in May 2027
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage, per annum	1.25%
Convertible notes	$ 600,000	600,000
Unamortized discount net of deferred offering costs	(10,971)	(12,995)
Convertible Notes, net of unamortized discount and deferred offering costs	589,029	587,005
Total fair value of fixed rate convertible debt	$ 625,122	627,090
0.599% Senior Subordinated Convertible Notes Due in August 2024
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage, per annum	0.599%
Convertible notes	$ 495,000	495,000
Unamortized discount net of deferred offering costs	(4,952)	(6,860)
Convertible Notes, net of unamortized discount and deferred offering costs	490,048	488,140
Total fair value of fixed rate convertible debt	$ 521,082	$ 530,714