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Stockholders' Equity (Tables)
9 Months Ended
Sep. 30, 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 and nine months ended September 30, 2020 and 2019:
Three Months Ended
September 30
Nine Months Ended
September 30
2020201920202019
(thousands)
Beginning balance, net of taxes
$(49,883)$(47,717)$(50,248)$(47,652)
Amortization of actuarial (gain) loss, before taxes (a)202 (44)605 (131)
Effect of settlements, before taxes (a)— 1,342 86 1,342 
Income taxes(51)(329)(175)(307)
Ending balance, net of taxes$(49,732)$(46,748)$(49,732)$(46,748)
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(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.