COMMITMENTS AND CONTINGENCIES (Details) $ in Thousands						1 Months Ended			3 Months Ended		9 Months Ended		12 Months Ended
	Jul. 30, 2022 USD ($)	Feb. 05, 2022	Dec. 21, 2021 USD ($) installment	Jan. 26, 2021	Oct. 19, 2020	Dec. 31, 2022 USD ($)	Jul. 31, 2022 USD ($) payment	Feb. 28, 2019 USD ($) a	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)	Dec. 31, 2021 USD ($)	Oct. 14, 2022 count	Jun. 01, 2022	Jan. 28, 2022	Nov. 16, 2020 legal_motion	Sep. 23, 2020 derivative_action	Sep. 15, 2020 lawsuit
Other Commitments [Line Items]
Settlement liabilities, current									$ 70,000		$ 70,000		$ 50,000
Number of putative class action lawsuits | lawsuit																			6
Period to file opposition		30 days
Defendants period due to reply plaintiffs'		30 days
Number of derivative actions | derivative_action																		2
Period of derivative action				30 days	30 days
Period to file operative complaint																14 days
Defendants to submit the status report, due period															3 days
Amount drawn on facility											6,637	$ 0
Prepaid acquisition-related consideration									11,910		11,910		0
Undiscounted lease payments on lease not yet commenced									13,300		13,300
Purchase obligations									14,300		14,300
Senior Loans | Nikola Corporation
Other Commitments [Line Items]
Interest receivable									100		100
Senior Loans | Romeo Power, Inc
Other Commitments [Line Items]
Debt instrument, term	6 months
Period after termination of merger agreement when outstanding amounts are due	6 months
Senior Loans | Romeo Power, Inc | Nikola Corporation
Other Commitments [Line Items]
Principal amount	$ 30,000
Incremental increase	$ 20,000
Amount drawn on facility									10,000
Remaining available borrowing capacity									20,000		20,000
Senior Loans | Romeo Power, Inc | Secured Overnight Financing Rate (SOFR)
Other Commitments [Line Items]
Basis spread on variable rate	8.00%
Romeo Power, Inc
Other Commitments [Line Items]
Prepaid acquisition-related consideration									11,900		11,900
FCPM License | Accrued Liabilities
Other Commitments [Line Items]
Accrued license fees									29,400		29,400
Manufacturing Facility Commitment
Other Commitments [Line Items]
Construction completion period (in years)								5 years
Construction completion deadline monthly extension fee								$ 200
Construction completion, maximum extension period (in years)								2 years
Security deposit payable								$ 4,000
Coolidge, Arizona
Other Commitments [Line Items]
Area of land | a								430
Internal Review
Other Commitments [Line Items]
Litigation settlement			$ 125,000
Number of installment payments | installment			5
Period of installment payments			2 years
Payments for legal settlements							$ 5,000						25,000
Number of payments in alternative payment plan | payment							2
Settlement liabilities, current									70,000		70,000
Litigation liability, noncurrent									25,000		25,000
Legal fees									6,000	$ 6,400	25,500	$ 12,600
Accrued legal and professional fees									$ 24,000		$ 24,000		$ 22,700
Number of motions filed | legal_motion																	10
Internal Review | Subsequent Event
Other Commitments [Line Items]
Number of counts found guilty on securities fraud | count														1
Number of counts found guilty on wire fraud | count														2
Internal Review | Forecast
Other Commitments [Line Items]
Payments for legal settlements						$ 5,000