Revenue (Tables)

6 Months Ended

Jun. 30, 2022

Revenue from Contract with Customer [Abstract]

Summary of Disaggregates revenue by timing of goods or services

The following table disaggregates revenue by timing of transfer of goods or services:

	Three Months Ended June 30,				Six Months Ended June 30,
	2022		2021		2022		2021
	(in thousands)				(in thousands)
Transferred over time	$	22,843	$	4,275	$	28,160	$	8,211
Transferred at a point in time		605		228		780		257
Total revenue	$	23,448	$	4,503	$	28,940	$	8,468

Summary of Changes in Contract Liabilities

The following table summarizes changes in contract liabilities during the six months ended June 30, 2022:

	Contract Liabilities
	(in thousands)
Contract liabilities at December 31, 2021	$	19,216
Additions to contract liabilities during the period		33,889
Change in provision for contract loss		(743	)
Revenue recognized in the period from:
Amounts included in contract liabilities at the beginning of the period		(4,930	)
Amounts added to contract liabilities during the period		(21,725	)
Contract liabilities at June 30, 2022	$	25,707