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Employee Benefit Plans (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022
Retirement Plan |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Interest cost | $ 961 | $ 691 | $ 1,886 | $ 1,371
Expected return on assets | (1,144) | (1,462) | (2,287) | (2,923)
Net loss amortization | 197 | 169 | 363 | 320
Net periodic benefit cost (income) | 14 | (602) | (38) | (1,232)
Retirement Plan Acquired |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Interest cost | 31 | 25 | 63 | 51
Expected return on assets | (46) | (57) | (93) | (116)
Net loss amortization | 0 | 0 | 0 | 0
Net periodic benefit cost (income) | (15) | (32) | (30) | (65)
Restoration Plan |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Interest cost | 209 | 150 | 415 | 289
Expected return on assets | 0 | 0 | 0 | 0
Net loss amortization | 8 | 72 | 15 | 127
Net periodic benefit cost (income) | $ 217 | $ 222 | $ 430 | $ 416

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