Loans - Troubled Debt Restructuring (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified as troubled debt restructurings	$ 1,155	$ 4,399
Balance at period end	1,116	4,396
Commercial and Industrial Total Energy Loans [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified as troubled debt restructurings	0	3,817
Balance at period end	0	3,817
Commercial Real Estate Buildings Land And Other Loans [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified as troubled debt restructurings	1,155	582
Balance at period end	$ 1,116	$ 579