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OTHER LIABILITIES - Effect of changes in significant actuarial assumptions (Details)
$ in Thousands
Dec. 31, 2019
USD ($)
OTHER LIABILITIES  
Increase in actuarial assumption (as a percent) 0.50%
Decrease in actuarial assumption (as a percent) 0.50%
Increase in actuarial assumption $ (1,352)
Decrease in actuarial assumption $ 1,470