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STOCKHOLDERS' EQUITY (Tables) | 3 Months Ended
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Mar. 31, 2024
STOCKHOLDERS' EQUITY |
Components of accumulated other comprehensive income | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | March 31 |  | December 31 | ​
​ |  | 2024 |  | 2023 |
​ | ​ | (in thousands) | ​
Pre-tax amounts: | ​ | ​ | ​ | ​ | ​ | ​ | ​
Unrecognized net periodic benefit credit | ​ | $ | 6,564 | ​ | $ | 6,816 | ​
Interest rate swap | ​ | ​ | 1,214 | ​ | ​ | 1,710 | ​
Foreign currency translation | ​ |  | (3,285) | ​ |  | (2,709) | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Total | ​ | $ | 4,493 | ​ | $ | 5,817 | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
After-tax amounts: | ​ | ​ | ​ | ​ | ​ | ​ | ​
Unrecognized net periodic benefit credit | ​ | $ | 4,874 | ​ | $ | 5,061 | ​
Interest rate swap | ​ | ​ | 897 | ​ | ​ | 1,263 | ​
Foreign currency translation | ​ |  | (2,426) | ​ |  | (2,000) | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Total | ​ | $ | 3,345 | ​ | $ | 4,324 | ​
Summary of changes in accumulated other comprehensive income, net of tax, by component | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | Unrecognized | ​ | Interest | ​ | Foreign | ​
​ |  | Total |  | Benefit Credit |  | Swap |  | Translation |
​ | ​ | (in thousands) | ​
Balances at December 31, 2023 | ​ | $ | 4,324 | ​ | $ | 5,061 | ​ | $ | 1,263 | ​ | $ | (2,000) | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Other comprehensive loss before reclassifications | ​ | ​ | (792) | ​ | ​ | — | ​ | ​ | (366) | ​ | ​ | (426) | ​
Amounts reclassified from accumulated other comprehensive income | ​ | ​ | (187) | ​ | ​ | (187) | ​ | ​ | — | ​ | ​ | — | ​
Net current-period other comprehensive loss | ​ | ​ | (979) | ​ | ​ | (187) | ​ | ​ | (366) | ​ | ​ | (426) | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Balances at March 31, 2024 | ​ | $ | 3,345 | ​ | $ | 4,874 | ​ | $ | 897 | ​ | $ | (2,426) | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Balances at December 31, 2022 | ​ | $ | 7,103 | ​ | $ | 6,896 | ​ | $ | 2,604 | ​ | $ | (2,397) | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Other comprehensive loss before reclassifications | ​ |  | (470) | ​ |  | — | ​ | ​ | (452) | ​ |  | (18) | ​
Amounts reclassified from accumulated other comprehensive income | ​ |  | (247) | ​ |  | (247) | ​ | ​ | — | ​ |  | — | ​
Net current-period other comprehensive loss | ​ |  | (717) | ​ |  | (247) | ​ | ​ | (452) | ​ |  | (18) | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Balances at March 31, 2023 | ​ | $ | 6,386 | ​ | $ | 6,649 | ​ | $ | 2,152 | ​ | $ | (2,415) | ​
​
Summary of the significant reclassifications out of accumulated other comprehensive income (loss) by component | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Unrecognized Net Periodic | ​
​ | ​ | Benefit Credit |
​ | ​ | Three Months Ended March 31 | ​
​ |  | 2024 |  | 2023 |
​ | ​ | (in thousands) |
Amortization of net actuarial gain, pre-tax(1) | ​ | $ | 252 | ​ | $ | 333 | ​
Tax expense | ​ | ​ | (65) | ​ |  | (86) | ​
Total, net of tax | ​ | $ | 187 | ​ | $ | 247 | ​
​
(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 | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | 2024 | ​ | 2023 | ​
​ |  | Per Share |  | Amount |  | Per Share |  | Amount |
​ | ​ | (in thousands, except per share data)
First quarter | ​ | $ | 0.12 | ​ | $ | 2,828 | ​ | $ | 0.12 | ​ | $ | 2,915 | ​

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