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Loans and Allowance for Loan Losses ("ALLL") - Narrative (Details)	3 Months Ended
	Mar. 31, 2022 USD ($)	Mar. 31, 2021 USD ($)	Dec. 31, 2021 USD ($)
Financing Receivable, Allowance for Credit Loss [Line Items]
Accrued Interest	$ 10,000,000		$ 10,000,000
Drivers of Quarterly Change in the ACL
ACL increase (decrease)	(3,000,000)
Charge-offs	3,612,000
Recoveries	2,531,000
Net charge offs	1,000,000
Interest income recognized on nonaccrual loans	$ 1,000
Loans were restructured TDR guidance	0	0
Outstanding Balance	$ 38,000,000		40,000,000
Allowance for credit losses on off-balance sheet exposures	4,875,000		0
Financing Receivable, Impaired Interest Income		$ 642,000
Financing receivable, average balance of impaired loans		$ 112,000,000
Loan balance Increase
Drivers of Quarterly Change in the ACL
ACL increase (decrease)	2,000,000
Credit quality metrics including improved risk ratings
Drivers of Quarterly Change in the ACL
ACL increase (decrease)	(1,000,000)
Commercial real estate
Drivers of Quarterly Change in the ACL
ACL increase (decrease)	(628,000)
Charge-offs	1,102,000
Recoveries	0
Increase in loans	97,000,000
Allowance for credit losses on off-balance sheet exposures	753,000		0
Commercial real estate \| Loan balance Increase
Drivers of Quarterly Change in the ACL
ACL increase (decrease)	1,600,000
Commercial real estate \| Improved collateral valuation
Drivers of Quarterly Change in the ACL
ACL increase (decrease)	(1,000,000)
Commercial real estate project
Drivers of Quarterly Change in the ACL
Charge-offs	750,000
Energy
Drivers of Quarterly Change in the ACL
ACL increase (decrease)	(1,000,000)
Charge-offs	1,067,000
Recoveries	1,754,000
Allowance for credit losses on off-balance sheet exposures	258,000		$ 0
Energy \| Credit quality metrics including improved risk ratings
Drivers of Quarterly Change in the ACL
ACL increase (decrease)	(830,000)
Energy \| Low prices in 2020 and 2021
Drivers of Quarterly Change in the ACL
Charge-offs	1,000,000
Medical practice
Drivers of Quarterly Change in the ACL
Charge-offs	$ 1,000,000
Commercial
Drivers of Quarterly Change in the ACL
Percentage of loans guranteed	100.00%