Summary of Contract Assets and Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Product Information [Line Items]
Contract Assets - unbilled receivables	$ 165	$ 178
Total deferred revenue	8,411	8,515
Less: Long-term deferred revenue	(2,076)	(2,238)
Total current deferred revenue	6,335	6,277
Customer Deposits [Member]
Product Information [Line Items]
Total deferred revenue	573	925
Product Shipped, Revenue Deferred [Member]
Product Information [Line Items]
Total deferred revenue	2,041	1,794
Deferred Service and License Fees [Member]
Product Information [Line Items]
Total deferred revenue	$ 5,797	$ 5,796