REVENUE RECOGNITION - Schedule of Revenue by Customer Type (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Disaggregation of Revenue [Line Items]
Total revenue	$ 30,616	$ 29,619
Security Solutions segment
Disaggregation of Revenue [Line Items]
Total revenue	25,818	18,640
Secure Networks segment
Disaggregation of Revenue [Line Items]
Total revenue	4,798	10,979
Revenue from Contract with Customer, Product and Service Benchmark | Customer Concentration Risk
Disaggregation of Revenue [Line Items]
Total revenue	$ 30,616	$ 29,619
Concentration risk, percentage	100.00%	100.00%
Revenue from Contract with Customer, Product and Service Benchmark | Customer Concentration Risk | Firm fixed-price
Disaggregation of Revenue [Line Items]
Total revenue	$ 19,998	$ 22,836
Concentration risk, percentage	65.00%	77.00%
Revenue from Contract with Customer, Product and Service Benchmark | Customer Concentration Risk | Time-and-materials
Disaggregation of Revenue [Line Items]
Total revenue	$ 8,377	$ 3,137
Concentration risk, percentage	28.00%	11.00%
Revenue from Contract with Customer, Product and Service Benchmark | Customer Concentration Risk | Cost plus fixed fee
Disaggregation of Revenue [Line Items]
Total revenue	$ 2,241	$ 3,646
Concentration risk, percentage	7.00%	12.00%
Federal | Revenue from Contract with Customer, Product and Service Benchmark | Customer Concentration Risk
Disaggregation of Revenue [Line Items]
Total revenue	$ 27,301	$ 26,607
Concentration risk, percentage	89.00%	90.00%
State & local, and commercial | Revenue from Contract with Customer, Product and Service Benchmark | Customer Concentration Risk
Disaggregation of Revenue [Line Items]
Total revenue	$ 3,315	$ 3,012
Concentration risk, percentage	11.00%	10.00%
U.S. Department of Defense | Revenue from Contract with Customer, Segment Benchmark | Customer Concentration Risk | Security Solutions segment
Disaggregation of Revenue [Line Items]
Concentration risk, percentage	39.00%	37.00%
U.S. Department of Defense | Revenue from Contract with Customer, Segment Benchmark | Customer Concentration Risk | Secure Networks segment
Disaggregation of Revenue [Line Items]
Concentration risk, percentage	15.00%	19.00%
U.S. Department of Homeland Security | Revenue from Contract with Customer, Segment Benchmark | Customer Concentration Risk | Security Solutions segment
Disaggregation of Revenue [Line Items]
Concentration risk, percentage	16.00%	16.00%