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Stockholders' Equity (Tables)
 12 Months Ended
Dec. 31, 2022
Stockholders' Equity Note [Abstract]  
Dividends Declared [Table Text Block] Our board of directors declared and paid the following dividends during each of the respective quarters for the years ended December 31, 2022, 2021, and 2020:
Dividends Per ShareAmount Paid
2022(in thousands)
First Quarter (a)$0.12 $5,939 
Second Quarter (b)2.62 103,352 
Third Quarter0.12 4,734 
Fourth Quarter (b)1.15 45,539 
Total$4.01 $159,564 
2021
First Quarter (a)$0.10 $4,440 
Second Quarter (c)2.10 3,933 
Third Quarter (c)0.10 82,596 
Fourth Quarter (c)3.12 122,712 
Total$5.42 $213,681 
2020
First Quarter (a)$0.10 $4,645 
Second Quarter0.10 3,917 
Third Quarter (d)1.70 3,991 
Fourth Quarter (d)0.10 66,642 
Total$2.00 $79,195 
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(a)Includes payments of dividend equivalents on RSUs and PSUs which vested in first quarter of each year.

(b)During second quarter 2022, our board of directors declared and paid a special dividend of $2.50 per share on our common stock. During fourth quarter 2022, our board of directors declared and paid a special dividend of $1.00 per share on our common stock.

(c)During second quarter 2021, our board of directors declared a special dividend of $2.00 per share on our common stock, which was paid in the third quarter 2021. During fourth quarter 2021, our board of directors declared and paid a special dividend of $3.00 per share on our common stock.
(d)During third quarter 2020, our board of directors declared a special dividend of $1.60 per share on our common stock, which was paid in fourth quarter 2020.
Changes in Accumulated Other Comprehensive Loss [Table Text Block]
The following table details the changes in accumulated other comprehensive loss for the years ended December 31, 2022, 2021, and 2020:
Changes in Accumulated Other Comprehensive Loss
Year Ended December 31
202220212020
(thousands)
Beginning Balance, net of taxes
$(1,047)$(1,078)$(50,248)
Net actuarial gain, before taxes489 61 6,832 
Amortization of actuarial (gain) loss, before taxes (a)
83 (19)807 
Effect of settlements, before taxes (a)
130 — 6,250 
Income taxes (b)(175)(11)35,281 
Ending Balance, net of taxes
$(520)$(1,047)$(1,078)
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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 11, Retirement and Benefit Plans.

(b)    For the year ended December 31, 2020, income taxes included $38.8 million related to the release of stranded tax effects upon Plan Termination, as discussed in Note 4, Income Taxes.