Revenue Recognition (Tables)

3 Months Ended

Mar. 31, 2022

Accounting Policies [Abstract]

Disaggregation of Revenue

Revenues for the three months ended March 31, 2022 and 2021 were as follows:

	Three Months Ended March 31,
	2022		2021
	(Amounts in thousands)
Product revenue	$	206,363	$	142,737
Royalty and other income		37		100
Total revenue	$	206,400	$	142,837

Summary of Receivables and Deferred Revenue from Contracts with Customers

The following table provides information about receivables and deferred revenue from contracts with customers as of March 31, 2022 (amounts in thousands):

	March 31,		December 31,
	2022		2021
Balances from contracts with customers only:
Accounts receivable	$	122,435	$	117,420
Deferred revenue (included in accrued liabilities in    the consolidated balance sheets)	$	20,078	$	14,848
Revenue recognized during periods presented relating to:
The beginning deferred revenue balance	$	9,063	$	13,708