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Employee Benefit Plans
 3 Months Ended
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 PlanAcquired Retirement PlanRestoration
Plan
202220212022202120222021
Interest cost$680 $628 $26 $24 $139 $121 
Expected return on assets(1,461)(1,437)(59)(58)— — 
Net loss amortization151 520 — 3 55 118 
Net periodic benefit cost (income)$(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.