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STOCKHOLDERS' EQUITY (Tables) | 6 Months Ended
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Jun. 30, 2023
STOCKHOLDERS' EQUITY |
Components of accumulated other comprehensive income | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | June 30 |  | December 31 | ​
​ |  | 2023 |  | 2022 |
​ | ​ | (in thousands) | ​
Pre-tax amounts: | ​ | ​ | ​ | ​ | ​ | ​ | ​
Unrecognized net periodic benefit credit | ​ | $ | 8,622 | ​ | $ | 9,287 | ​
Interest rate swap | ​ | ​ | 2,955 | ​ | ​ | 3,526 | ​
Foreign currency translation | ​ |  | (2,731) | ​ |  | (3,247) | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Total | ​ | $ | 8,846 | ​ | $ | 9,566 | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
After-tax amounts: | ​ | ​ | ​ | ​ | ​ | ​ | ​
Unrecognized net periodic benefit credit | ​ | $ | 6,402 | ​ | $ | 6,896 | ​
Interest rate swap | ​ | ​ | 2,183 | ​ | ​ | 2,604 | ​
Foreign currency translation | ​ |  | (2,016) | ​ |  | (2,397) | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Total | ​ | $ | 6,569 | ​ | $ | 7,103 | ​
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, 2022 | ​ | $ | 7,103 | ​ | $ | 6,896 | ​ | $ | 2,604 | ​ | $ | (2,397) | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Other comprehensive income (loss) before reclassifications | ​ |  | (40) | ​ |  | — | ​ | ​ | (421) | ​ |  | 381 | ​
Amounts reclassified from accumulated other comprehensive income | ​ |  | (494) | ​ |  | (494) | ​ | ​ | — | ​ |  | — | ​
Net current-period other comprehensive income (loss) | ​ |  | (534) | ​ |  | (494) | ​ | ​ | (421) | ​ |  | 381 | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Balances at June 30, 2023 | ​ | $ | 6,569 | ​ | $ | 6,402 | ​ | $ | 2,183 | ​ | $ | (2,016) | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Balances at December 31, 2021 | ​ | $ | 3,699 | ​ | $ | 4,160 | ​ | $ | 309 | ​ | $ | (770) | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Other comprehensive income (loss) before reclassifications | ​ | ​ | 1,556 | ​ | ​ | — | ​ | ​ | 1,802 | ​ | ​ | (246) | ​
Amounts reclassified from accumulated other comprehensive income | ​ | ​ | (281) | ​ | ​ | (281) | ​ | ​ | — | ​ | ​ | — | ​
Net current-period other comprehensive income (loss) | ​ | ​ | 1,275 | ​ | ​ | (281) | ​ | ​ | 1,802 | ​ | ​ | (246) | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Balances at June 30, 2022 | ​ | $ | 4,974 | ​ | $ | 3,879 | ​ | $ | 2,111 | ​ | $ | (1,016) | ​
​
Summary of the significant reclassifications out of accumulated other comprehensive income (loss) by component | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Unrecognized Net Periodic | ​
​ | ​ | Benefit Credit |
​ | ​ | Six Months Ended June 30 | ​
​ |  | 2023 |  | 2022 |
​ | ​ | (in thousands) |
Amortization of net actuarial gain, pre-tax(1) | ​ | $ | 665 | ​ | $ | 378 | ​
Tax expense | ​ | ​ | (171) | ​ |  | (97) | ​
Total, net of tax | ​ | $ | 494 | ​ | $ | 281 | ​
​
(1) | Included in the computation of net periodic benefit credit of the Company’s supplemental benefit plan (“SBP”) and postretirement health benefit plan.
​
Summary of dividends declared | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | 2023 | ​ | 2022 | ​
​ |  | Per Share |  | Amount |  | Per Share |  | Amount |
​ | ​ | (in thousands, except per share data)
First quarter | ​ | $ | 0.12 | ​ | $ | 2,915 | ​ | $ | 0.08 | ​ | $ | 1,978 | ​
Second quarter | ​ | $ | 0.12 | ​ | $ | 2,894 | ​ | $ | 0.12 | ​ | $ | 2,949 | ​

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