Revenue Recognition - Schedule of Disaggregated Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Disaggregation of Revenue [Line Items]
Revenue	$ 92,767	$ 77,860	$ 258,145	$ 201,277
Service
Disaggregation of Revenue [Line Items]
Revenue	37,010	29,530	106,550	74,743
Restaurant/Retail
Disaggregation of Revenue [Line Items]
Revenue	68,354	59,821	191,371	147,529
Government
Disaggregation of Revenue [Line Items]
Revenue	24,413	18,039	66,774	53,748
Point in Time | Restaurant/Retail
Disaggregation of Revenue [Line Items]
Revenue	35,619	35,109	97,937	85,709
Point in Time | Restaurant/Retail | Hardware
Disaggregation of Revenue [Line Items]
Revenue	30,796	29,669	83,219	70,858
Point in Time | Restaurant/Retail | Software
Disaggregation of Revenue [Line Items]
Revenue	2	290	25	827
Point in Time | Restaurant/Retail | Service
Disaggregation of Revenue [Line Items]
Revenue	4,821	5,150	14,693	14,024
Point in Time | Restaurant/Retail | Mission systems
Disaggregation of Revenue [Line Items]
Revenue	0	0	0	0
Point in Time | Restaurant/Retail | Intelligence, surveillance, and reconnaissance solutions
Disaggregation of Revenue [Line Items]
Revenue	0	0	0	0
Point in Time | Restaurant/Retail | Commercial software
Disaggregation of Revenue [Line Items]
Revenue	0	0	0	0
Point in Time | Government
Disaggregation of Revenue [Line Items]
Revenue	541	55	753	220
Point in Time | Government | Hardware
Disaggregation of Revenue [Line Items]
Revenue	0	0	0	0
Point in Time | Government | Software
Disaggregation of Revenue [Line Items]
Revenue	0	0	0	0
Point in Time | Government | Service
Disaggregation of Revenue [Line Items]
Revenue	0	0	0	0
Point in Time | Government | Mission systems
Disaggregation of Revenue [Line Items]
Revenue	0	0	0	0
Point in Time | Government | Intelligence, surveillance, and reconnaissance solutions
Disaggregation of Revenue [Line Items]
Revenue	0	0	0	0
Point in Time | Government | Commercial software
Disaggregation of Revenue [Line Items]
Revenue	541	55	753	220
Over Time | Restaurant/Retail
Disaggregation of Revenue [Line Items]
Revenue	32,734	24,712	93,433	61,820
Over Time | Restaurant/Retail | Hardware
Disaggregation of Revenue [Line Items]
Revenue	0	0	0	0
Over Time | Restaurant/Retail | Software
Disaggregation of Revenue [Line Items]
Revenue	22,436	16,878	62,389	39,318
Over Time | Restaurant/Retail | Service
Disaggregation of Revenue [Line Items]
Revenue	10,298	7,834	31,044	22,502
Over Time | Restaurant/Retail | Mission systems
Disaggregation of Revenue [Line Items]
Revenue	0	0	0	0
Over Time | Restaurant/Retail | Intelligence, surveillance, and reconnaissance solutions
Disaggregation of Revenue [Line Items]
Revenue	0	0	0	0
Over Time | Restaurant/Retail | Commercial software
Disaggregation of Revenue [Line Items]
Revenue	0	0	0	0
Over Time | Government
Disaggregation of Revenue [Line Items]
Revenue	23,873	17,984	66,022	53,528
Over Time | Government | Hardware
Disaggregation of Revenue [Line Items]
Revenue	0	0	0	0
Over Time | Government | Software
Disaggregation of Revenue [Line Items]
Revenue	0	0	0	0
Over Time | Government | Service
Disaggregation of Revenue [Line Items]
Revenue	0	0	0	0
Over Time | Government | Mission systems
Disaggregation of Revenue [Line Items]
Revenue	8,982	9,619	26,781	28,450
Over Time | Government | Intelligence, surveillance, and reconnaissance solutions
Disaggregation of Revenue [Line Items]
Revenue	14,710	8,237	38,746	24,706
Over Time | Government | Commercial software
Disaggregation of Revenue [Line Items]
Revenue	$ 181	$ 128	$ 495	$ 372