Annual report pursuant to Section 13 and 15(d)

PENSION AND OTHER RETIREMENTS BENEFITS - Net Periodic Cost Not yet Recognized (Details)

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PENSION AND OTHER RETIREMENTS BENEFITS - Net Periodic Cost Not yet Recognized (Details) - Pension Plan - USD ($)
$ in Thousands
Dec. 31, 2020
Jun. 25, 2020
Dec. 31, 2019
Defined Benefit Plan Disclosure      
Prior service cost $ 0 $ 169 $ 201
Net actuarial (gain) loss (620) 13,997 12,362
Net amount recorded in AOCI $ (620) $ 14,166 $ 12,563