Revenue Recognition (Tables)

9 Months Ended

Sep. 30, 2022

Accounting Policies [Abstract]

Disaggregation of Revenue

Revenues for the three and nine months ended September 30, 2022 and 2021 were as follows:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2022		2021		2022		2021
	(Amounts in thousands)
Product revenue	$	200,708	$	178,177	$	614,668	$	483,834
Royalty and other income		33		39		106		179
Total revenue	$	200,741	$	178,216	$	614,774	$	484,013

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 September 30, 2022 (amounts in thousands):

	September 30,		December 31,
	2022		2021
Balances from contracts with customers only:
Accounts receivable	$	117,645	$	117,420
Deferred revenue (included in accrued liabilities in    the consolidated balance sheets)	$	19,465	$	14,848
Revenue recognized during periods presented relating to:
The beginning deferred revenue balance	$	12,989	$	13,708