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PENSION LIABILITY (Tables)
3 Months Ended
Mar. 31, 2020
PENSION LIABILITY  
Schedule of net funded status

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March 31, 

    

December 31, 

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2020

​

2019

Pension liability

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$

66,538

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$

68,359

Schedule of net periodic pension benefit costs

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Three Months Ended March 31, 

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2020

    

2019

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Service cost

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$

258

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$

—

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Interest cost

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​

480

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199

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Expected return on plan assets

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(148)

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(170)

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Amortization of actuarial gains and losses

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116

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118

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Net periodic pension cost

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$

706

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$

147

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