FAIR VALUE OF FINANCIAL INSTRUMENTS - Fair Value Measurement Inputs (Details) - Level 3 $ in Thousands	9 Months Ended
Sep. 30, 2023 USD ($)	Dec. 31, 2022
Private warrants
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Change in fair value	$ (291)
RTI warrants
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Change in fair value	$ (1,485)
Fair Value Measurements on Recurring Basis \| Expected annual dividend yield \| Private warrants
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrant, measurement input	0	0
Fair Value Measurements on Recurring Basis \| Expected annual dividend yield \| RTI warrants
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrant, measurement input	0	0
Fair Value Measurements on Recurring Basis \| Expected volatility \| Private warrants
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrant, measurement input	1.011	1.051
Fair Value Measurements on Recurring Basis \| Expected volatility \| RTI warrants
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrant, measurement input	0.895	0.997
Fair Value Measurements on Recurring Basis \| Risk-free rate of return \| Private warrants
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrant, measurement input	0.049	0.042
Fair Value Measurements on Recurring Basis \| Risk-free rate of return \| RTI warrants
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrant, measurement input	0.053	0.044
Fair Value Measurements on Recurring Basis \| Expected option term (years) \| Private warrants
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Expected option term (years)	2 years 6 months	3 years 2 months 12 days
Fair Value Measurements on Recurring Basis \| Expected option term (years) \| RTI warrants
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Expected option term (years)	1 year 3 months 18 days	2 years

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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- Definition

Amount of increase (decrease) of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)
-SubTopic 10
-Topic 820
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482106/820-10-50-2

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- Definition

Value of input used to measure outstanding warrant and right embodying unconditional obligation requiring redemption by transferring asset at specified or determinable date or upon event certain to occur.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482106/820-10-50-2

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+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482106/820-10-50-2

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