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Net Periodic Pension Cost (Tables)
6 Months Ended
Jun. 30, 2020
Retirement Plans  
Schedule of Net Benefit Costs

The following table details the net periodic pension cost incurred by period (in thousands):

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​

​

​

​

​

​

​

​

​

​

​

​

​

​

Three Months Ended

​

Six Months Ended

​

 

June 30, 

 

 

June 30, 

​

    

2020

    

2019

    

2020

    

2019

Interest cost

 

$

88

 

$

114

 

$

177

 

$

227

Amortization of net loss

​

​

35

​

​

36

​

​

70

​

​

72

Expected return on plan assets

​

​

(171)

​

​

(150)

​

​

(342)

​

​

(299)

Net periodic pension cost

 

$

(48)

 

$

—

 

$

(95)

 

$

—

Contributed amount

 

$

—

 

$

—

 

$

—

 

$

—