Loans and Allowance for Loan Losses ("ALLL") - Narrative (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)	Mar. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Financing Receivable, Allowance for Credit Loss [Line Items]
Accrued Interest	$ 12,000,000		$ 12,000,000			$ 10,000,000
Drivers of Quarterly Change in the ACL
ACL increase (decrease)	586,000		(2,600,000)
Charge-offs	4,448,000		8,060,000
Recoveries	3,344,000		5,875,000
Increase in loans	3,800,000		4,900,000
Net charge offs	1,100,000		2,200,000
Increase decrease in reserves on impaired loans	(2,200,000)		(5,200,000)
Interest income recognized on nonaccrual loans	$ 259,000		418,000
Loans were restructured TDR guidance	0	0
Outstanding Balance	$ 35,000,000		35,000,000			40,000,000
Allowance for credit losses on off-balance sheet exposures	5,320,000		5,320,000		$ 4,875,000	0
Financing Receivable, Impaired Interest Income		$ 615,000		$ 1,000,000
Financing receivable, average balance of impaired loans		$ 108,000,000		$ 109,000,000
Commercial real estate
Drivers of Quarterly Change in the ACL
Charge-offs	0		1,102,000
Recoveries	1,585,000		1,585,000
Allowance for credit losses on off-balance sheet exposures	657,000		657,000		753,000	0
Energy
Drivers of Quarterly Change in the ACL
Charge-offs	2,900,000		3,967,000
Recoveries	0		1,754,000
Allowance for credit losses on off-balance sheet exposures	$ 470,000		$ 470,000		$ 258,000	$ 0
Commercial
Drivers of Quarterly Change in the ACL
Percentage of loans guranteed	100.00%		100.00%