Revenue - Schedule of Changes in Deferred Revenue And Billings in Excess of Cost and Estimated Profit (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2022 USD ($)
Deferred Revenue
Beginning balance	$ 2,869
Revenue recognized that was included in balance at beginning of the year	(2,011)
Deferred revenue, net, related to contracts entered into during the year	2,503
Ending balance	3,361
Billings in Excess of Costs and Estimated Profit
Beginning balance	312
Revenue recognized that was included in balance at beginning of the year	(312)
Billings in excess of costs, related to contracts entered into during the year	15
Ending balance	$ 15