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Summary of Significant Accounting Policies (Tables)
12 Months Ended
Dec. 31, 2020
Accounting Policies [Abstract]  
Schedule of Defined Benefit Plans Disclosures
Benefit Obligations: The Benefit obligations caption includes the following plans:
($ in thousands)December 31, 2020December 31, 2019
Pension Plan$7,961 $6,824 
Postretirement Plan3,997 3,573 
SERP Plan2,687 2,278 
Total$14,645 $12,675