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Stockholders' Equity (Tables)
 3 Months Ended
Mar. 31, 2020
Stockholders' Equity Note [Abstract]  
Changes in Accumulated Other Comprehensive Loss [Table Text Block]
The following table details the changes in accumulated other comprehensive loss for the three months ended March 31, 2020 and 2019:

 
Three Months Ended
March 31
 
2020
 
2019
 
(thousands)
Beginning balance, net of taxes
$
(50,248
)
 
$
(47,652
)
Amortization of actuarial (gain) loss, before taxes (a)
202

 
(43
)
Effect of settlements, before taxes (a)
86

 
—

Income taxes
(73
)
 
11

Ending balance, net of taxes
$
(50,033
)
 
$
(47,684
)
___________________________________ 
 
(a)
Represents amounts reclassified from accumulated other comprehensive loss. These amounts are included in the computation of net periodic pension cost. For additional information, see Note 8, Retirement and Benefit Plans.