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Revenue Recognition (Tables)

6 Months Ended

Jun. 30, 2022

Disaggregation of Revenue [Line Items]

The following tables depict the disaggregation of revenue according to the type of good or service and timing of transfer of goods or services for the three and six months ended June 30, 2022 and June 30, 2021:


	Three Months Ended		Three Months Ended		Six Months Ended		Six Months Ended
	June 30,		June 30,		June 30,		June 30,
	2022		2021		2022		2021

	(In thousands)				(In thousands)
Type of Goods or Service
Collaborative research and other professional services	$	1,477	$	944	$	2,992	$	2,547
Access to quantum computing systems		657		596		1,246		1,353

	$	2,134	$	1,540	$	4,238	$	3,900

Timing of Revenue Recognition
Revenue recognized at a point in time	$	—	$	—	$	—	$	—
Revenue recognized over time		2,134		1,540		4,238		3,900

	$	2,134	$	1,540	$	4,238	$	3,900

Summary of Contract with Customer, Contract Asset, Contract Liability, and Receivable

Selected condensed consolidated balance sheet line items that reflect accounts receivable, contract assets and liabilities as of June 30, 2022 and December 31, 2021 were as follows:


	June 30,			December 31,
	2022			2021

	(In thousands)
Trade receivables	$	2,350		$	961
Unbilled receivables	$	222		$	582
Deferred revenue	$	(1,108	)	$	(985	)

Summary of Change in Contract with Customer, Asset and Liability

Changes in deferred revenue from contracts with customers were as follows:


	Six Months Ended June 30,
	2022
	(In thousands)
Balance at beginning of period	$	(985	)
Deferral of revenue		(673	)
Recognition of deferred revenue		550

Balance at end of period	$	(1,108	)