Revenue

3 Months Ended

Mar. 31, 2023

Revenue from Contract with Customer [Abstract]

Revenue

4. Revenue

The following table presents the Company’s revenues disaggregated by geography (in thousands):

	Three Months Ended March 31,
	2023		2022
Service revenue:
United States	$	6,846	$	7,949
Europe		4,353		4,258
Total service revenue		11,199		12,207
Lease revenue:
United States	$	213	$	239
Europe		108		49
Total lease revenue		321		288
Total Revenue	$	11,520	$	12,495

Contract Balances

Contract assets include amounts related to the Company’s contractual right to consideration for completed performance obligations not yet invoiced. The contract assets are reclassified to receivables when the rights become unconditional. The Company’s contract assets as of March 31, 2023 and December 31, 2022 in the amount of $0.3 million and $0.6 million, respectively, are included in prepaid expenses and other current assets on the consolidated balance sheets. The contract assets are typically invoiced within a month of recognition. The Company's contract assets as of January 1, 2023 and 2022 amounted to $0.6 million and $0.7 million, respectively.

As of December 31, 2022, Contract liabilities are recorded as deferred revenues and include payments received in advance of performance under the contract. Contract liabilities are realized when services are provided to the customer. Contract liabilities as of March 31, 2023 and December 31, 2022 in the amount of $1.5 million and $0.7 million, respectively, are reported as a component of current liabilities on the consolidated balance sheets. All opening amounts of the December 31, 2022 and 2021 contract liabilities were recognized during the periods ended March 31, 2023 and December 31, 2022, respectively. The Company's contract liabilities as of January 1, 2023 and 2022 amounted to $0.7 million and $0.3 million, respectively.