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EMPLOYEE BENEFIT PLANS - Fair Value of Plan Assets (Details) - Defined benefit pension plan - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | --- | ---
Employee Benefit Plans |  |  |
Defined benefit plan, fair value of plan assets | $ 113,976 | $ 100,969 | $ 91,567
Cash And Cash Equivalents | Quoted Prices In Active Markets For Identical Assets (Level 1) |  |  |
Employee Benefit Plans |  |  |
Defined benefit plan, fair value of plan assets | 4,426 | 3,888 |
Equities - Global | Net asset value per share |  |  |
Employee Benefit Plans |  |  |
Defined benefit plan, fair value of plan assets | 24,868 | 17,549 |
Equities - United States | Net asset value per share |  |  |
Employee Benefit Plans |  |  |
Defined benefit plan, fair value of plan assets | 41,140 | 31,835 |
Equities - United States futures | Net asset value per share |  |  |
Employee Benefit Plans |  |  |
Defined benefit plan, fair value of plan assets | (2,055) | (2,616) |
Equities - International developed markets | Net asset value per share |  |  |
Employee Benefit Plans |  |  |
Defined benefit plan, fair value of plan assets | 16,382 | 8,920 |
Equities - International developed markets futures | Net asset value per share |  |  |
Employee Benefit Plans |  |  |
Defined benefit plan, fair value of plan assets | (16,260) | (4,921) |
Equities - International emerging markets | Net asset value per share |  |  |
Employee Benefit Plans |  |  |
Defined benefit plan, fair value of plan assets | (3,363) | 6,600 |
Equities - International emerging markets futures | Net asset value per share |  |  |
Employee Benefit Plans |  |  |
Defined benefit plan, fair value of plan assets | 7,024 | (975) |
Fixed income - Investment grade | Net asset value per share |  |  |
Employee Benefit Plans |  |  |
Defined benefit plan, fair value of plan assets | 27,095 | 25,703 |
Fixed income - High yield | Net asset value per share |  |  |
Employee Benefit Plans |  |  |
Defined benefit plan, fair value of plan assets | 177 | 10,056 |
Fixed income - Emerging markets | Net asset value per share |  |  |
Employee Benefit Plans |  |  |
Defined benefit plan, fair value of plan assets |  | 2,664 |
Fixed income - Futures | Net asset value per share |  |  |
Employee Benefit Plans |  |  |
Defined benefit plan, fair value of plan assets | (689) | (1,265) |
Real estate | Net asset value per share |  |  |
Employee Benefit Plans |  |  |
Defined benefit plan, fair value of plan assets | $ 15,231 | $ 3,531 |

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