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Stockholders' Equity, Stock-Based Compensation and Accumulated Other Comprehensive Income (Loss) - Change in the Components of the Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022
Accumulated Other Comprehensive Income (Loss) |  |
Beginning balance | $ 127,411 | $ 148,956
Other comprehensive income (loss), before reclassifications | 9,447 | (46,860)
Amounts reclassified from accumulated other comprehensive income (loss) | 13,277 | 2,547
Other comprehensive income (loss), before tax | 22,724 | (44,313)
Income tax (expense) benefit | (4,772) | 9,306
Other comprehensive income (loss), net of tax | 17,952 | (35,007)
Ending balance | 136,085 | 127,411
Unrealized Income (Loss) on Securities |  |
Accumulated Other Comprehensive Income (Loss) |  |
Beginning balance | (36,657) | 362
Other comprehensive income (loss), before reclassifications | 10,087 | (46,860)
Amounts reclassified from accumulated other comprehensive income (loss) | 9,148 | 0
Other comprehensive income (loss), before tax | 19,235 | (46,860)
Income tax (expense) benefit | (4,039) | 9,841
Other comprehensive income (loss), net of tax | 15,196 | (37,019)
Ending balance | (21,461) | (36,657)
Unrecognized Net Pension and Postretirement Costs |  |
Accumulated Other Comprehensive Income (Loss) |  |
Beginning balance | 4,943 | 2,931
Other comprehensive income (loss), before reclassifications | (640) | 0
Amounts reclassified from accumulated other comprehensive income (loss) | 4,129 | 2,547
Other comprehensive income (loss), before tax | 3,489 | 2,547
Income tax (expense) benefit | (733) | (535)
Other comprehensive income (loss), net of tax | 2,756 | 2,012
Ending balance | 7,699 | 4,943
Accumulated Other Comprehensive Income (Loss) |  |
Accumulated Other Comprehensive Income (Loss) |  |
Beginning balance | (31,714) | 3,293
Ending balance | $ (13,762) | $ (31,714)

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