PROPERTY AND EQUIPMENT, NET - Schedule of Property and Equipment, Net (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 127,278	$ 66,361
Less: Accumulated depreciation	(19,817)	(16,922)
Property and equipment, net	107,461	49,439
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	5,797	4,860
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	3,127	2,276
Construction in progress
Property, Plant and Equipment [Line Items]
Property and equipment, gross	94,950	37,251
IT related equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 3,871	$ 2,441