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Defined Benefit Plans
 3 Months Ended
Mar. 31, 2020
Retirement Benefits [Abstract]  
Defined Benefit Plans Defined Benefit Plans
The components of the combined net periodic expense (benefit) for our defined benefit pension plans are presented in the table below.
 
Three Months Ended 
 March 31,
 
2020
 
2019
Expected return on plan assets, net of expenses
$
(3,072
)
 
$
(2,693
)
Interest cost on projected benefit obligation
1,252

 
1,618

Net amortization and deferral
1,330

 
1,406

Net periodic expense (benefit)
$
(490
)
 
$
331


Our non-qualified defined benefit pension plan is not funded. No contributions to the qualified defined benefit pension plan were made during the three months ended March 31, 2020. We do not expect to make any contributions to the qualified defined benefit plan during the remainder of 2020.