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PENSION LIABILITY - Components of Net Periodic Pension Cost (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
PENSION LIABILITY        
Service Cost $ 269 $ 124 $ 791 $ 124
Interest Cost 470 274 1,449 668
Expected return on plan assets (151) (160) (441) (496)
Amortization of actuarial gain and losses 116 90 344 323
Net periodic pension cost $ 704 $ 328 $ 2,143 $ 619