Revenue - Summary of Disaggregated Revenue by Geographic Region (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Disaggregation Of Revenue [Line Items]
Revenue	$ 1,493	$ 2,601	$ 2,630	$ 2,909
% of Revenue	100.00%	100.00%	100.00%	100.00%
Recognized at a point in time [Member]
Disaggregation Of Revenue [Line Items]
Revenue	$ 466	$ 241	$ 677	$ 534
% of Revenue	31.00%	9.00%	26.00%	18.00%
Recognized over time [Member]
Disaggregation Of Revenue [Line Items]
Revenue	$ 1,027	$ 2,360	$ 1,953	$ 2,375
% of Revenue	69.00%	91.00%	74.00%	82.00%
North America [Member]
Disaggregation Of Revenue [Line Items]
Revenue	$ 1,410	$ 2,481	$ 2,521	$ 2,682
% of Revenue	94.00%	95.00%	96.00%	92.00%
Europe [Member]
Disaggregation Of Revenue [Line Items]
Revenue	$ 58	$ 40	$ 84	$ 55
% of Revenue	4.00%	2.00%	3.00%	2.00%
Asia [Member]
Disaggregation Of Revenue [Line Items]
Revenue	$ 25	$ 80	$ 25	$ 172
% of Revenue	2.00%	3.00%	1.00%	6.00%