Revenue - Categories of end customers (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Disaggregation of Revenue [Line Items]
Revenue	$ 20,774	$ 29,544
U.S. federal government and agencies | Revenue Benchmark | Customer Concentration Risk
Disaggregation of Revenue [Line Items]
Revenue	9,245	11,687
International governments | Revenue Benchmark | Customer Concentration Risk
Disaggregation of Revenue [Line Items]
Revenue	10,704	17,126
Commercial and other | Revenue Benchmark | Customer Concentration Risk
Disaggregation of Revenue [Line Items]
Revenue	$ 825	$ 731