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BUSINESS COMBINATION AND REVERSE RECAPITALIZATION - Additional Information (Details) $ / shares in Units, $ in Thousands |  |  |  | 1 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | --- | ---
Nov. 17, 2020 USD ($) $ / shares shares | Nov. 16, 2020 USD ($) $ / shares shares | Jul. 15, 2020 USD ($) shares | Dec. 31, 2020 shares | Dec. 31, 2022 USD ($) $ / shares | Dec. 31, 2021 USD ($) $ / shares | Dec. 31, 2020 USD ($) | Dec. 31, 2019 $ / shares shares
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Merger exchange ratio | 59,908.35 |  |  |  |  |  |  |
Common stock, par value (usd per share) | $ / shares | $ 0.0001 |  |  |  | $ 0.0001 | $ 0.0001 |  |
Capitalized expenditures |  |  |  |  | $ 361,200 | $ 138,000 | $ 26,200 |
Direct and incremental costs | $ 33,500 |  |  |  |  |  |  |
Costs recorded to additional paid-in capital | 28,200 |  |  |  |  |  |  |
Costs expensed to general and administrative expenses | $ 3,300 |  |  |  |  |  |  |
Earnout Shares | FVAP |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Earnout shares (shares) | shares | 12,860,000 |  |  |  |  |  |  |
Estimated fair value of Earnout Shares | $ 171,200 |  |  |  |  |  |  |
MPMO Earnout Shares | FVAP |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Estimated fair value of Earnout Shares | 134,000 |  |  |  |  |  |  |
SNR Earnout Shares | FVAP |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Estimated fair value of Earnout Shares | $ 37,200 |  |  |  |  |  |  |
SNR |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Stock issued for asset acquisition (shares) | shares | 19,999,942 |  |  |  |  |  |  |
Total cost of acquisition | $ 324,100 |  |  |  |  |  |  |
Deferred tax liability | (109,100) |  |  |  |  |  |  |
Asset acquisition, transaction costs | 2,000 |  |  |  |  |  |  |
SNR | Mineral rights |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Capitalized expenditures | $ 434,700 |  |  |  |  |  |  |
MPMO | Conversion of common and preferred units into common stock |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Conversion of stock, shares issued (shares) | shares | 71,941,538 |  |  |  |  |  |  |
Private Placement |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Common stock sold (shares) | shares | 20,000,000 |  |  |  |  |  |  |
Common stock sold, aggregate purchase price |  |  | $ 200,000 |  |  |  |  |
Earnout Shares |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Common stock issuances (shares) | shares |  |  |  | 12,859,898 |  |  |  |
Vesting Shares |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Common stock issuances (shares) | shares |  |  |  | 8,625,000 |  |  |  |
MPMO |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Common unit, outstanding (shares) | shares |  |  |  |  |  |  |  | 1,000
Common units, par value (usd per share) | $ / shares |  |  |  |  |  |  |  | $ 0
Preferred units, outstanding (shares) | shares |  | 200.86 |  |  |  |  |  | 110.98
Preferred units, par value (usd per share) | $ / shares |  | $ 0 |  |  |  |  |  | $ 0
Preferred units issued (shares) | shares |  | 89.88 |  |  |  |  |  |
MPMO | SNR |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Liability related to minimum royalty |  | $ 3,900 |  |  |  |  |  |
Sponsor |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Number of warrants exchanged (shares) | shares |  |  | 5,933,333 |  |  |  |  |
Stock issued upon conversion of warrants (shares) | shares |  |  | 890,000 |  |  |  |  |

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