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Employee Benefit Plans
 9 Months Ended
Sep. 30, 2023
Retirement Benefits [Abstract]  
Employee Benefit Plans Employee Benefit Plans
The net periodic pension cost for the Pension Plan consisted of the following components:
Three months ended September 30Nine months ended September 30
 2023202220232022
 (dollars in thousands)
Interest cost$856 $599 $2,567 $1,795 
Expected return on plan assets(878)(1,098)(2,632)(3,295)
Net amortization and deferral81 163 242 490 
Net periodic pension cost$59 $(336)$177 $(1,010)
The components of the net benefit for the Postretirement Plan consisted of the following components:
Three months ended September 30Nine months ended September 30
 2023202220232022
 (dollars in thousands)
Interest cost$12 $8 $38 $25 
Net accretion and deferral(137)(132)(409)(394)
Net periodic benefit$(125)$(124)$(371)$(369)

In connection with the Merger, the Corporation assumed the obligations of Prudential Bancorp under a multiemployer defined benefit pension plan that had previously been closed to new Prudential Bancorp participants.
The Corporation recognizes the funded status of its Pension Plan and Postretirement Plan on the consolidated balance sheets and recognizes the change in that funded status through other comprehensive income.