Contract Assets and Liabilities (Tables)

12 Months Ended

Dec. 31, 2021

Revenue from Contract with Customer [Abstract]

Components of contract assets and contract liabilities

The components of contract assets and contract liabilities consisted of the following:

	December 31,		December 31,
	2021		2020
	(in thousands)
Contract assets - current
Unbilled revenue	$	788	$	749
Contract assets	890		3,047
Total contract assets - current	$	1,678	$	3,796
Contract liabilities - current
Deferred revenue - short-term	$	11,082	$	14,030
Other contract liabilities	184		507
Total contract liabilities - current	$	11,266	$	14,537
Contract liabilities - long-term	$	—	$	—
Deferred revenue - long-term	568		2,559
Total contract liabilities - long-term	$	568	$	2,559

Changes in short-term and long-term contract assets and contract liabilities reported as of January 1, 2021 were as follows:

	Contract Assets		Contract Liabilities
	(in thousands)
Balance on January 1, 2021	3,796		$	17,096
Billings or revenue recognized that was included in the beginning balance	(740)		(12,641)
Cash received in advance and not recognized as revenue	—		3,060
Changes in contract assets, net of reclassification to receivables	780		—
Cumulative catch-up adjustment arising from changes in estimates to complete	—		4,624
Cumulative catch-up adjustment arising from contract modification	—		18
Changes in costs to fulfill and amortization of commission costs	(2,158)		—
Changes in contract commission costs			(323)
Balance on December 31, 2021	$	1,678	$	11,834