Loans and Allowance for Loan Losses ("ALLL") - Internal Risk Ratings - Previous GAAP (Details) $ in Thousands	Dec. 31, 2021 USD ($)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	$ 4,269,620
Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	4,014,490
Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	176,422
Substandard | Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	47,275
Substandard | Nonperforming
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	28,879
Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	2,554
Loss
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	0
Commercial and Industrial
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	1,401,681
Commercial and Industrial | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	1,356,883
Commercial and Industrial | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	16,201
Commercial and Industrial | Substandard | Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	23,739
Commercial and Industrial | Substandard | Nonperforming
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	4,858
Commercial and Industrial | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	0
Commercial and Industrial | Loss
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	0
Energy
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	278,860
Energy | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	184,269
Energy | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	73,196
Energy | Substandard | Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	5,246
Energy | Substandard | Nonperforming
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	13,595
Energy | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	2,554
Energy | Loss
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	0
Commercial real estate
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	1,281,095
Commercial real estate | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	1,172,323
Commercial real estate | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	86,768
Commercial real estate | Substandard | Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	11,782
Commercial real estate | Substandard | Nonperforming
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	10,222
Commercial real estate | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	0
Commercial real estate | Loss
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	0
Construction and land development
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	578,758
Construction and land development | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	578,758
Construction and land development | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	0
Construction and land development | Substandard | Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	0
Construction and land development | Substandard | Nonperforming
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	0
Construction and land development | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	0
Construction and land development | Loss
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	0
Residential and Multifamily Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	600,816
Residential and Multifamily Real Estate [Member] | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	593,847
Residential and Multifamily Real Estate [Member] | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	257
Residential and Multifamily Real Estate [Member] | Substandard | Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	6,508
Residential and Multifamily Real Estate [Member] | Substandard | Nonperforming
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	204
Residential and Multifamily Real Estate [Member] | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	0
Residential and Multifamily Real Estate [Member] | Loss
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	0
Paycheck Protection Program ("PPP")
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	64,805
Paycheck Protection Program ("PPP") | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	64,805
Paycheck Protection Program ("PPP") | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	0
Paycheck Protection Program ("PPP") | Substandard | Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	0
Paycheck Protection Program ("PPP") | Substandard | Nonperforming
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	0
Paycheck Protection Program ("PPP") | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	0
Paycheck Protection Program ("PPP") | Loss
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	0
Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	63,605
Consumer | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	63,605
Consumer | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	0
Consumer | Substandard | Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	0
Consumer | Substandard | Nonperforming
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	0
Consumer | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	0
Consumer | Loss
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	$ 0