Balance Sheet Offsetting (Tables)

12 Months Ended

Dec. 31, 2020

Offsetting [Abstract]

Balance Sheet Offsetting of Derivative Assets and Liabilities

The interest, commodity and foreign exchange agreements the Corporation has with its commercial customers are not subject to an enforceable master netting arrangement, and therefore, are excluded from this table:

			Gross Amounts Subject to Master Netting Arrangements Offset on the Consolidated Balance Sheets				Net Amounts Presented on the Consolidated Balance Sheets		Gross Amounts Not Offset on the Consolidated Balance Sheets
($ in Thousands)	Gross Amounts Recognized		Derivative Liabilities Offset		Cash Collateral Received						Net Amount
Derivative assets
December 31, 2020	$	13,441	$	(1,936)	$	(10,879)	$	626	$	—	$	626
December 31, 2019	11,864		(10,410)		(1,408)		45		—		45
			Gross Amounts Subject to Master Netting Arrangements Offset on the Consolidated Balance Sheets				Net Amounts Presented on the Consolidated Balance Sheets		Gross Amounts Not Offset on the Consolidated Balance Sheets
($ in Thousands)	Gross Amounts Recognized		Derivative Assets Offset		Cash Collateral Pledged						Net Amount
Derivative liabilities
December 31, 2020	$	27,951	$	(1,936)	$	(25,625)	$	390	$	—	$	390
December 31, 2019	22,189		(10,410)		(11,365)		413		—		413