Annual report pursuant to Section 13 and 15(d)

EMPLOYEE BENEFIT PLANS (Details 5)

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EMPLOYEE BENEFIT PLANS (Details 5) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Employee Benefit Plans      
Service cost $ 37
Interest cost 102 4,805 7,926
Expected return on plan assets (140) (6,149) (13,775)
Amortization of net loss 100 2,396 3,292
Preliminary net periodic benefit cost/(income) 62 1,052 (2,520)
Settlement expense 56 46,419
Net periodic benefit cost $ 118 $ 47,471 $ (2,520)