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BUSINESS COMBINATION - Merger with Luxco Narrative (Details) - Luxco - USD ($) $ in Thousands |  | 1 Months Ended | 12 Months Ended
--- | --- | --- | ---
Apr. 01, 2021 | Sep. 30, 2021 | Dec. 31, 2021
Business Acquisition [Line Items] |  |  |
Cash consideration paid | $ 237,500 |  |
Common stock issued to acquire business (in shares) | 5,007,833 |  |
Value of MGP Common Stock issued at close | $ 296,213 |  |
Shares issued to acquire business as a percentage of outstanding common stock | 22.80% |  |
Increase (decrease) in consideration transferred |  | $ 608 |
Increase in stock consideration (in shares) |  | 1,373 |
Sales |  |  | $ 177,607
Income before income taxes |  |  | 17,027
Transaction costs incurred |  |  | 8,927
Net income |  |  | 100,597
Acquisition-related Costs | Luxco |  |  |
Business Acquisition [Line Items] |  |  |
Net income |  |  | 3,132
Fair Value Adjustment to Inventory |  |  |
Business Acquisition [Line Items] |  |  |
Net income |  |  | $ 2,529

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