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Pension Plans (Tables)
3 Months Ended
Mar. 31, 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 March 31,
($ in thousands)2021 Pension Plan 2020 Pension Plan 2021 SERP2020 SERP2021 Total Both Plans2020 Total Both Plans
Service cost$— — — — — — 
Interest cost306 308 39 55 345 363 
Expected return on plan assets(325)(325)— — (325)(325)
Amortization of net (gain)/loss210 219 (39)(41)171 178 
Net periodic pension cost$191 202 — 14 191 216