Quarterly report pursuant to Section 13 or 15(d)

PENSION AND POST RETIREMENT BENEFIT PLANS (Details)

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PENSION AND POST RETIREMENT BENEFIT PLANS (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Components of net periodic pension benefit Gain    
Interest and service cost $ 924 $ 1,995
Expected return on plan assets (30) (3,443)
Amortization of net loss 892 826
Net periodic loss/(benefit) $ 1,786 $ (622)