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Net Periodic Pension Cost
 3 Months Ended
Mar. 31, 2020
Retirement Plans  
Net Periodic Pension Cost

16. Net Periodic Pension Cost

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

 

 

 

 

 

 

 

 

 

Three Months Ended

 

 

March 31, 

 

    

2020

    

2019

Interest cost

 

$

89

 

$

113

Amortization of net loss

 

 

35

 

 

36

Expected return on plan assets

 

 

(171)

 

 

(149)

Net periodic pension cost

 

$

(47)

 

$

 —

Contributed amount

 

$

 —

 

$

 —

 

Refer to Note 15 to the consolidated financial statements in our Annual Report on Form 10‑K for the year ended December 31, 2019 for more discussion of our retirement plans.