PROPERTY AND EQUIPMENT, NET - Schedule of Property and Equipment, Net (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 214,102	$ 184,510
Less: Accumulated depreciation	(22,669)	(20,224)
Property and equipment, net	191,433	164,286
Equipment in orbit
Property, Plant and Equipment [Line Items]
Property and equipment, gross	19,533	19,533
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	13,922	13,183
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	3,689	3,187
Construction in progress
Property, Plant and Equipment [Line Items]
Property and equipment, gross	171,213	143,869
Building
Property, Plant and Equipment [Line Items]
Property and equipment, gross	906	906
IT related equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 4,839	$ 3,832