SEGMENT INFORMATION - Operations by Business Segment (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Revenues [Abstract]
Total revenue	$ 29,619	$ 35,222
Gross profit
Total gross profit	10,961	13,482
Research and development expenses	3,170	2,833
Selling, general and administrative expenses	16,229	23,619
Operating loss	(8,438)	(12,970)
Other income	1,252	2,496
Interest expense	(175)	(249)
Loss before income taxes	(7,361)	(10,723)
Provision for income taxes	(17)	(23)
Net loss	(7,378)	(10,746)
Security Solutions
Revenues [Abstract]
Total revenue	18,640	19,773
Gross profit
Total gross profit	8,626	10,274
Secure Networks
Revenues [Abstract]
Total revenue	10,979	15,449
Gross profit
Total gross profit	$ 2,335	$ 3,208