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Income taxes | 12 Months Ended
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Dec. 31, 2024
Income taxes [Abstract] |
Income taxes | Note 8 – Income taxes: The provision for income taxes and the difference between such provision for income taxes and the amount that would be expected using the U.S. federal statutory income tax rate of 21% are presented below. All of our pre-tax income relates to operations in the United States. ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Years ended December 31,
​ | ​ | 2022 |  | 2023 |  | 2024
​ | ​ | (In thousands)
Income tax expense: | ​ | ​ |  |  | ​ |  |  | ​ |
Currently payable | ​ | $ | 7,130 | ​ | $ | 7,730 | ​ | $ | 5,590
Deferred income tax benefit | ​ |  | (688) | ​ |  | (720) | ​ |  | (440)
Total | ​ | $ | 6,442 | ​ | $ | 7,010 | ​ | $ | 5,150
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Expected tax expense, at the U.S. federal statutory income tax rate of 21% | ​ | $ | 5,736 | ​ | $ | 6,217 | ​ | $ | 4,565
State income taxes | ​ |  | 827 | ​ |  | 786 | ​ |  | 571
Other, net | ​ |  | (121) | ​ |  | 7 | ​ |  | 14
Income tax expense | ​ | $ | 6,442 | ​ | $ | 7,010 | ​ | $ | 5,150
​ Income taxes allocable to other comprehensive income (loss) related to marketable securities was insignificant in 2022, 2023 and 2024. The components of the net deferred tax liability are summarized below. ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31,
​ |  | 2023 |  | 2024
​ | ​ | (In thousands)
Tax effect of temporary differences related to: |  | ​ |  |  | ​ |
Inventories | ​ | $ | 373 | ​ | $ | 394
Property and equipment | ​ |  | (1,543) | ​ |  | (1,005)
Accrued liabilities and other deductible differences | ​ |  | 43 | ​ |  | 47
Accrued employee benefits | ​ |  | 1,343 | ​ |  | 1,225
Goodwill | ​ |  | (1,693) | ​ |  | (1,693)
Other taxable differences | ​ |  | (32) | ​ |  | (35)
Net noncurrent deferred tax liability | ​ | $ | (1,509) | ​ | $ | (1,067)
​ We and Contran file income tax returns in U.S. federal and various state and local jurisdictions. Our income tax returns prior to 2021 are generally considered closed to examination by applicable tax authorities.

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