Revenue Recognition - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Disaggregation of Revenue [Line Items]
Revenue	$ 355,795	$ 282,876	$ 213,786
Hardware
Disaggregation of Revenue [Line Items]
Revenue	114,410	105,014	73,228
Subscription service
Disaggregation of Revenue [Line Items]
Revenue	97,499	62,649	31,370
Professional service
Disaggregation of Revenue [Line Items]
Revenue	50,438	42,688	37,914
Restaurant/Retail | Point in Time
Disaggregation of Revenue [Line Items]
Revenue	135,347	123,180	89,220
Restaurant/Retail | Over Time
Disaggregation of Revenue [Line Items]
Revenue	127,000	87,171	53,292
Restaurant/Retail | Hardware | Point in Time
Disaggregation of Revenue [Line Items]
Revenue	114,410	105,014	73,228
Restaurant/Retail | Hardware | Over Time
Disaggregation of Revenue [Line Items]
Revenue	0	0	0
Restaurant/Retail | Subscription service | Point in Time
Disaggregation of Revenue [Line Items]
Revenue	0	0	0
Restaurant/Retail | Subscription service | Over Time
Disaggregation of Revenue [Line Items]
Revenue	97,499	62,649	31,370
Restaurant/Retail | Professional service | Point in Time
Disaggregation of Revenue [Line Items]
Revenue	20,937	18,166	15,992
Restaurant/Retail | Professional service | Over Time
Disaggregation of Revenue [Line Items]
Revenue	29,501	24,522	21,922
Restaurant/Retail | Mission systems | Point in Time
Disaggregation of Revenue [Line Items]
Revenue	0	0	0
Restaurant/Retail | Mission systems | Over Time
Disaggregation of Revenue [Line Items]
Revenue	0	0	0
Restaurant/Retail | Intelligence, surveillance, and reconnaissance solutions | Point in Time
Disaggregation of Revenue [Line Items]
Revenue	0	0	0
Restaurant/Retail | Intelligence, surveillance, and reconnaissance solutions | Over Time
Disaggregation of Revenue [Line Items]
Revenue	0	0	0
Restaurant/Retail | Commercial software | Point in Time
Disaggregation of Revenue [Line Items]
Revenue	0	0	0
Restaurant/Retail | Commercial software | Over Time
Disaggregation of Revenue [Line Items]
Revenue	0	0	0
Government | Point in Time
Disaggregation of Revenue [Line Items]
Revenue	1,132	505	686
Government | Over Time
Disaggregation of Revenue [Line Items]
Revenue	92,316	72,020	70,588
Government | Hardware | Point in Time
Disaggregation of Revenue [Line Items]
Revenue	0	0	0
Government | Hardware | Over Time
Disaggregation of Revenue [Line Items]
Revenue	0	0	0
Government | Subscription service | Point in Time
Disaggregation of Revenue [Line Items]
Revenue	0	0	0
Government | Subscription service | Over Time
Disaggregation of Revenue [Line Items]
Revenue	0	0	0
Government | Professional service | Point in Time
Disaggregation of Revenue [Line Items]
Revenue	0	0	0
Government | Professional service | Over Time
Disaggregation of Revenue [Line Items]
Revenue	0	0	0
Government | Mission systems | Point in Time
Disaggregation of Revenue [Line Items]
Revenue	0	0	0
Government | Mission systems | Over Time
Disaggregation of Revenue [Line Items]
Revenue	35,458	38,311	37,448
Government | Intelligence, surveillance, and reconnaissance solutions | Point in Time
Disaggregation of Revenue [Line Items]
Revenue	0	0	0
Government | Intelligence, surveillance, and reconnaissance solutions | Over Time
Disaggregation of Revenue [Line Items]
Revenue	56,141	33,188	32,947
Government | Commercial software | Point in Time
Disaggregation of Revenue [Line Items]
Revenue	1,132	505	686
Government | Commercial software | Over Time
Disaggregation of Revenue [Line Items]
Revenue	$ 717	$ 521	$ 193