Summary of Significant Accounting Policies (Details) $ in Thousands	3 Months Ended
Mar. 31, 2022 USD ($) Institution segment	Mar. 31, 2021 USD ($)
Off Balance Sheet Risk and Concentrations of Credit Risk
Number of federally insured financial institutions \| Institution	2
Segment Information
Number of operating segments \| segment	1
Number of reporting segments \| segment	1
Revenue Recognition
Payment terms	45 days
Product revenue, net	$ 1,498	$ 35
Impairment of Long-Lived Assets
Tangible asset impairment charges	0	$ 0
Prepaid and other current assets
Inventory
Inventory	$ 108

The number of federally insured financial institutions.

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Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

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Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

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