Summary of Significant Accounting Policies (Tables)

9 Months Ended

Sep. 30, 2021

Summary Of Significant Accounting Policies [Line Items]

Schedule of allowances for credit losses

	Nine Months Ended
	September 30,
	2021
		(in thousands)
Beginning balance	$	4,220
Provision for credit losses		380
Write-offs		(495)
Total	$	4,105

Schedule of Accumulated Other Comprehensive Income (Loss)

	Three months ended				Nine months ended
	September 30,				September 30,
	2021		2020		2021		2020
	(in thousands)				(in thousands)
Beginning balance	$	2,441	$	5,770	$	4,259	$	919
Net unrealized gain (loss) on available-for-sale securities, net of tax		(950)		(600)		(2,768)		4,251
Ending balance	$	1,491	$	5,170	$	1,491	$	5,170

Accounting Standards Update 2020-06

Summary Of Significant Accounting Policies [Line Items]

Schedule of new accounting pronouncements and changes in accounting principle

	December 31,		ASU 2020-06		January 1,
	2020		Adoption Adjustment		2021
	(in thousands)
Liabilities
Outstanding Principal	$	287,500	$	—	$	287,500
Unamortized debt discount and issuance cost		(85,007)		76,674		(8,333)
Net carrying amount	$	202,493	$	76,674	$	279,167
Equity
Additional paid-in-capital	$	(1,411,286)	$	82,872	$	(1,328,414)
Accumulated deficit		(929,318)		6,198		(923,120)