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Pension Plans (Tables)
 9 Months Ended
Sep. 30, 2021
Retirement Benefits [Abstract]  
Schedule of the components of pension (income) expense The following table contains the components of the pension cost.
 For the Three Months Ended September 30,
($ in thousands)2021 Pension Plan 2020 Pension Plan 2021 SERP2020 SERP2021 Total Both Plans2020 Total Both Plans
Service cost$— — — — — — 
Interest cost283 303 30 55 313 358 
Expected return on plan assets(264)(325)— — (264)(325)
Amortization of net (gain)/loss106 194 3 (41)109 153 
Net periodic pension cost$125 172 33 14 158 186 
 Nine Months Ended September 30, 2021
($ in thousands)2021 Pension Plan2020 Pension Plan2021 SERP2020 SERP2021 Total Both Plans2020 Total Both Plans
Service cost$— — — — — — 
Interest cost693 917 89 165 782 1,082 
Expected return on plan assets(792)(976)— — (792)(976)
Amortization of net (gain)/loss474 634 11 (123)485 511 
Net periodic pension cost$375 575 100 42 475 617