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v3.22.1

Employee Benefit Plans | 3 Months Ended
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Mar. 31, 2022
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract] |
Employee Benefit Plans | Employee Benefit Plans The components of net periodic benefit cost (income) related to our employee benefit plans are as follows (in thousands):
|  | Three Months Ended March 31,
|  | Retirement Plan |  | Acquired Retirement Plan |  | Restoration Plan
|  | 2022 |  | 2021 |  | 2022 |  | 2021 |  | 2022 |  | 2021
Interest cost |  | $ | 680 |  |  | $ | 628 |  |  | $ | 26 |  |  | $ | 24 |  |  | $ | 139 |  |  | $ | 121 |
Expected return on assets |  | (1,461) |  |  | (1,437) |  |  | (59) |  |  | (58) |  |  | — |  |  | — |
Net loss amortization |  | 151 |  |  | 520 |  |  | — |  |  | 3 |  |  | 55 |  |  | 118 |
Net periodic benefit cost (income) |  | $ | (630) |  |  | $ | (289) |  |  | $ | (33) |  |  | $ | (31) |  |  | $ | 194 |  |  | $ | 239 |
During the three months ended June 30, 2021, we updated our expected long-term rate of return on plan assets for the Retirement Plan and the Acquired Retirement Plan from 6.50% to 6.125%. The noncash adjustment to the employee benefit plan liabilities, consisting of changes in prior service cost and net loss, was $206,000 and $641,000 for the three months ended March 31, 2022 and 2021, respectively.

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