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Summary of Significant Accounting Policies (Tables)
 12 Months Ended
Dec. 31, 2021
Accounting Policies [Abstract]  
Schedule of Defined Benefit Plans Disclosures
Benefit Plan Obligations: The Benefit Plan Obligations caption includes the following:
($ in thousands)December 31, 2021December 31, 2020
Pension Plan$2,393 $7,961 
Postretirement Medical Benefits Plan3,506 3,997 
Supplemental executive retirement plan ("SERP")2,317 2,687 
Total$8,216 $14,645