SEGMENT REPORTING - Schedule of Capital Expenditures (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Segment Reporting Information [Line Items]
Property, plant and equipment	$ 39,035	$ 20,433	$ 96,300	$ 52,758
Operating Segments | Defense and National Security
Segment Reporting Information [Line Items]
Property, plant and equipment	1,554	322	2,769	1,131
Operating Segments | Space Solutions
Segment Reporting Information [Line Items]
Property, plant and equipment	171	419	919	1,328
Operating Segments | Starlab Space Stations
Segment Reporting Information [Line Items]
Property, plant and equipment	37,184	19,692	92,434	50,299
Corporate
Segment Reporting Information [Line Items]
Property, plant and equipment	$ 126	$ 0	$ 178	$ 0