SEGMENT INFORMATION - Schedule of Operations by Business Segment (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Segment Reporting Information [Line Items]
Total revenue	$ 36,186	$ 63,593	$ 104,319	$ 169,544
Total gross profit	13,013	20,945	38,854	60,745
Selling, general and administrative expenses	22,706	29,729	70,984	99,932
Operating loss	(9,693)	(8,784)	(32,130)	(39,187)
Other income	1,222	518	5,367	648
Interest expense	(178)	(181)	(611)	(558)
Loss before income taxes	(8,649)	(8,447)	(27,374)	(39,097)
Provision for income taxes	(23)	(8)	(68)	(133)
Net loss	(8,672)	(8,455)	(27,442)	(39,230)
Security Solutions
Segment Reporting Information [Line Items]
Total revenue	19,795	32,440	56,764	90,178
Total gross profit	9,354	15,577	29,179	47,062
Secure Networks
Segment Reporting Information [Line Items]
Total revenue	16,391	31,153	47,555	79,366
Total gross profit	$ 3,659	$ 5,368	$ 9,675	$ 13,683