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Employee Benefit Plans
 9 Months Ended
Sep. 30, 2021
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 September 30,
Defined Benefit
Pension Plan		Defined Benefit
Pension Plan Acquired		Restoration
Plan
202120202021202020212020
Service cost$— $483 $— $— $— $149 
Interest cost642 672 23 41 130 126 
Expected return on assets(1,355)(1,344)(53)(75)— — 
Net loss amortization251 694 1 2 64 125 
Prior service (credit) cost amortization— (4)— — — 2 
Net periodic benefit (income) cost$(462)$501 $(29)$(32)$194 $402 
Nine Months Ended September 30,
Defined Benefit
Pension Plan		Defined Benefit
Pension Plan Acquired		Restoration
Plan
202120202021202020212020
Service cost$— $1,311 $— $— $— $280 
Interest cost1,927 2,359 69 122 390 442 
Expected return on assets(4,065)(4,332)(158)(226)— — 
Net loss amortization752 1,780 4 7 192 426 
Prior service (credit) cost amortization— (11)— — — 5 
Loss due to curtailment— 151 — — — 12 
Net periodic benefit (income) cost$(1,386)$1,258 $(85)$(97)$582 $1,165 

Prior to the freeze of all future benefit accruals and accrual of benefit service as of December 31, 2020, the service cost component was recorded on our consolidated income statements as salaries and employee benefits in noninterest expense. All other components other than service costs are recorded in other noninterest expense.
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 $948,000 and $5.2 million for the nine months ended September 30, 2021 and 2020, respectively.