FAIR VALUE MEASUREMENTS - Schedule of Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Jan. 31, 2021	Dec. 31, 2020
Liabilities:
Contingent consideration	$ 4,193		$ 0
Level 3
Assets [Abstract]
Investment in debt security		$ 25,000
Recurring \| Level 1
Assets [Abstract]
Investment in debt security	0		0
Total assets measured at fair value	1,463,750		654,699
Liabilities:
Contingent consideration	0		0
Warranty obligations
Warranty obligations, current	0		0
Warranty obligations, non-current	0		0
Total warranty obligations measured at fair value	0		0
Total liabilities measured at fair value	0		0
Recurring \| Level 1 \| Money market funds
Assets [Abstract]
Cash and cash equivalents	1,463,750		654,699
Recurring \| Level 2
Assets [Abstract]
Investment in debt security	0		0
Total assets measured at fair value	0		0
Liabilities:
Contingent consideration	0		0
Warranty obligations
Warranty obligations, current	0		0
Warranty obligations, non-current	0		0
Total warranty obligations measured at fair value	0		0
Total liabilities measured at fair value	0		0
Recurring \| Level 2 \| Money market funds
Assets [Abstract]
Cash and cash equivalents	0		0
Recurring \| Level 3
Assets [Abstract]
Investment in debt security	26,437		0
Total assets measured at fair value	26,437		0
Liabilities:
Contingent consideration	3,540		0
Warranty obligations
Warranty obligations, current	10,163		8,267
Warranty obligations, non-current	23,156		20,469
Total warranty obligations measured at fair value	33,319		28,736
Total liabilities measured at fair value	36,859		28,736
Recurring \| Level 3 \| Money market funds
Assets [Abstract]
Cash and cash equivalents	$ 0		$ 0

Standard and Extended Product Warranty Accrual, Current, Fair Value Disclosure

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Standard and Extended Product Warranty Accrual, Fair Value Disclosure

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Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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