Convertible Senior Notes and Capped Call Transactions - Schedule of Interest Expense (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Debt Disclosure [Abstract]
Contractual interest expense	$ 790	$ 430	$ 1,580	$ 430
Amortization of debt discount	1,405	641	2,794	641
Amortization of debt issuance costs	303	138	603	138
Total	$ 2,498	$ 1,209	$ 4,977	$ 1,209

Amount of the cost of borrowed funds accounted for as interest expense for debt.

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration