SEGMENT INFORMATION - Schedule of Segment Reporting Information, by Segment (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Revenues
Total revenue	$ 47,343	$ 63,593	$ 55,791	$ 50,160	$ 64,051	$ 68,981	$ 53,644	$ 55,757	$ 216,887	$ 242,433	$ 179,917
Gross profit
Total gross profit	18,298	20,945	20,929	18,871	24,149	24,877	22,534	14,469	79,043	86,029	62,420
Selling, general and administrative expenses	32,961	29,729	34,965	35,238	29,560	29,965	40,005	27,963	132,893	127,493	62,123
Operating (loss)/income	(14,663)	(8,784)	(14,036)	(16,367)	(5,411)	(5,088)	(17,471)	(13,494)	(53,850)	(41,464)	297
Other income/(expense)	702	518	118	12	81	20	32	(1,054)	1,350	(921)	(255)
Interest expense	(316)	(181)	(187)	(190)	(194)	(195)	(192)	(196)	(874)	(777)	(7,259)
Gain on redemption of public preferred stock									0	0	14,012
(Loss)/income before income taxes	(14,277)	(8,447)	(14,105)	(16,545)	(5,524)	(5,263)	(17,631)	(14,744)	(53,374)	(43,162)	6,795
(Provision for)/benefit from income taxes	79	(8)	(54)	(71)	34	41	(13)	(34)	(54)	28	46
Net (loss)/income									(53,428)	(43,134)	6,841
Net (loss)/income	$ (14,198)	$ (8,455)	$ (14,159)	$ (16,616)	$ (5,490)	$ (5,222)	$ (17,644)	$ (14,778)	(53,428)	(43,134)	1,687
Less: Net income attributable to non-controlling interest									0	0	(5,154)
Inter-segment elimination
Revenues
Total revenue									0	0	(10,377)
Security Solutions
Revenues
Total revenue									120,454	123,534	127,667
Gross profit
Total gross profit									61,948	64,904	50,458
Secure Networks
Revenues
Total revenue									96,433	118,899	62,627
Gross profit
Total gross profit									$ 17,095	$ 21,125	$ 11,962