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STOCKHOLDERS' EQUITY (Tables) | 12 Months Ended
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Dec. 31, 2022
STOCKHOLDERS' EQUITY |
Components of accumulated other comprehensive income | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | 2022 |  | 2021 |  | 2020 |
​ | ​ | (in thousands) |
Pre-tax amounts: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Unrecognized net periodic benefit credit | ​ | $ | 9,287 | ​ | $ | 5,602 | ​ | $ | 4,390 | ​
Interest rate swap | ​ | ​ | 3,526 | ​ | ​ | 419 | ​ | ​ | (1,622) | ​
Foreign currency translation | ​ |  | (3,247) | ​ |  | (1,044) | ​ |  | (1,182) | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Total | ​ | $ | 9,566 | ​ | $ | 4,977 | ​ | $ | 1,586 | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
After-tax amounts: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Unrecognized net periodic benefit credit | ​ | $ | 6,896 | ​ | $ | 4,160 | ​ | $ | 3,260 | ​
Interest rate swap | ​ | ​ | 2,604 | ​ | ​ | 309 | ​ | ​ | (1,198) | ​
Foreign currency translation | ​ |  | (2,397) | ​ |  | (770) | ​ |  | (872) | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Total | ​ | $ | 7,103 | ​ | $ | 3,699 | ​ | $ | 1,190 | ​
Summary of changes in accumulated other comprehensive income, net of tax, by component | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | Unrecognized | ​ | ​ | Interest |  | Foreign | ​
​ | ​ | ​ | ​ | ​ | Net Periodic | ​ | ​ | Rate | ​ | Currency | ​
​ |  | Total |  | Benefit Credit |  | ​ | Swap |  | Translation | ​
​ | ​ | (in thousands) | ​
Balances at December 31, 2020 | ​ | $ | 1,190 | ​ | $ | 3,260 | ​ | $ | (1,198) | ​ | $ | (872) | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Other comprehensive income before reclassifications | ​ |  | 2,909 | ​ |  | 1,300 | ​ | ​ | 1,507 | ​ |  | 102 | ​
Amounts reclassified from accumulated other comprehensive income | ​ |  | (400) | ​ |  | (400) | ​ | ​ | — | ​ |  | — | ​
Net current-period other comprehensive income | ​ |  | 2,509 | ​ |  | 900 | ​ | ​ | 1,507 | ​ |  | 102 | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Balances at December 31, 2021 | ​ | $ | 3,699 | ​ | $ | 4,160 | ​ | $ | 309 | ​ | $ | (770) | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Other comprehensive income (loss) before reclassifications | ​ | ​ | 3,966 | ​ | ​ | 3,298 | ​ | ​ | 2,295 | ​ | ​ | (1,627) | ​
Amounts reclassified from accumulated other comprehensive income | ​ | ​ | (562) | ​ | ​ | (562) | ​ | ​ | — | ​ | ​ | — | ​
Net current-period other comprehensive income (loss) | ​ | ​ | 3,404 | ​ | ​ | 2,736 | ​ | ​ | 2,295 | ​ | ​ | (1,627) | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Balances at December 31, 2022 | ​ | $ | 7,103 | ​ | $ | 6,896 | ​ | $ | 2,604 | ​ | $ | (2,397) | ​
​
Summary of the significant reclassifications out of accumulated other comprehensive income (loss) by component | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Unrecognized Net Periodic | ​
​ | ​ | Benefit Credit(1)(2) |
​ |  | 2022 |  | 2021 |
​ | ​ | (in thousands) |
Amortization of net actuarial gain, pre-tax | ​ | $ | 757 | ​ | $ | 539 | ​
Tax expense | ​ | ​ | (195) | ​ |  | (139) | ​
Total, net of tax | ​ | $ | 562 | ​ | $ | 400 | ​
(1) | Amounts in parentheses indicate increases in expense or loss.
(2) | These components of accumulated other comprehensive income are included in the computation of net periodic benefit cost (credit) (see Note J).
​
Summary of dividends declared | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | 2022 | ​ | 2021 | ​
​ |  | Per Share |  | Amount |  | Per Share |  | Amount |
​ | ​ | (in thousands, except per share data)
First quarter | ​ | $ | 0.08 | ​ | $ | 1,978 | ​ | $ | 0.08 | ​ | $ | 2,037 | ​
Second quarter | ​ | $ | 0.12 | ​ | $ | 2,949 | ​ | $ | 0.08 | ​ | $ | 2,058 | ​
Third quarter | ​ | $ | 0.12 | ​ | $ | 2,965 | ​ | $ | 0.08 | ​ | $ | 2,050 | ​
Fourth quarter | ​ | $ | 0.12 | ​ | $ | 2,938 | ​ | $ | 0.08 | ​ | $ | 1,994 | ​
​

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