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STOCKHOLDERS' EQUITY - Reclass (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020
Unrecognized Net Periodic Benefit Credit |  |
Significant reclassifications out of accumulated other comprehensive loss by component |  |
Total, pre-tax | $ 539 | $ 501
Tax expense | (139) | (129)
Total, net of tax | 400 | 372
Amortization of net actuarial gain |  |
Significant reclassifications out of accumulated other comprehensive loss by component |  |
Total, pre-tax | $ 539 | 589
Amortization of prior service credit |  |
Significant reclassifications out of accumulated other comprehensive loss by component |  |
Total, pre-tax |  | 1
Pension settlement expense |  |
Significant reclassifications out of accumulated other comprehensive loss by component |  |
Total, pre-tax |  | $ (89)

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