COMMITMENTS AND CONTINGENCIES - Leases (Details) $ in Thousands		3 Months Ended	9 Months Ended
	Sep. 01, 2023 USD ($) ft²	Sep. 30, 2023 USD ($)	Sep. 30, 2023 USD ($)
Lessee, Lease, Description [Line Items]
Payment of lease termination fee	$ 679	$ 679	$ 679
Gain on lease termination		$ 114	114
Deferred rent removed and gain on lease assignment			114
Loss on sale of fixed assets			116
Cambridge Lease
Lessee, Lease, Description [Line Items]
Lease space (in square feet) | ft²	5,104
Payment of lease termination fee	$ 579
Gain on lease termination			$ (565)
Letter of credit terminated amount	100
Deferred rent removed and gain on lease assignment	$ 114