v3.22.4
Summary of Significant Accounting Policies (Impact of Adoption of New Accounting Standard Related to CECL) (Details) - USD ($)
$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Jan. 01, 2020
Dec. 31, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Securities held to maturity, net of allowance for credit losses of $158 in 2022 and $158 in 2021 $ 158 $ 158      
Financing Receivable, Allowance for Credit Loss 227,621 248,666      
Off-Balance Sheet, Credit Loss, Liability 58,593 50,314 $ 44,152   $ 500
Cumulative effect of accounting change         (29,252)
Retained Earnings [Member]          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Cumulative effect of accounting change       $ (29,300) (29,252)
Commercial Portfolio Segment [Member]          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Financing Receivable, Allowance for Credit Loss 104,237 72,091 73,843   51,593
Commercial Portfolio Segment [Member] | Retained Earnings [Member]          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Cumulative effect of accounting change       (16,798)  
Commercial and Industrial Total Energy Loans [Member]          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Financing Receivable, Allowance for Credit Loss 18,062 17,217 39,553   37,382
Commercial and Industrial Total Energy Loans [Member] | Retained Earnings [Member]          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Cumulative effect of accounting change       8,258  
Commercial Real Estate Portfolio Segment [Member]          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Financing Receivable, Allowance for Credit Loss 90,301 144,936 134,892   31,037
Commercial Real Estate Portfolio Segment [Member] | Retained Earnings [Member]          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Cumulative effect of accounting change       10,680  
Total consumer real estate loans [Member]          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Financing Receivable, Allowance for Credit Loss 8,004 6,585 7,926   4,113
Total consumer real estate loans [Member] | Retained Earnings [Member]          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Cumulative effect of accounting change       (1,890)  
Consumer Loan [Member]          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Financing Receivable, Allowance for Credit Loss 7,017 7,837 6,963   8,042
Consumer Loan [Member] | Retained Earnings [Member]          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Cumulative effect of accounting change       1,776  
Loans Receivable [Member]          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Financing Receivable, Allowance for Credit Loss 227,621 248,666 263,177   132,167
Loans Receivable [Member] | Retained Earnings [Member]          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Cumulative effect of accounting change       2,026  
US Treasury [Member] | Retained Earnings [Member]          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Cumulative effect of accounting change       0  
Residential Mortgage Backed Securities [Member]          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Securities held to maturity, net of allowance for credit losses of $158 in 2022 and $158 in 2021 0 0      
Residential Mortgage Backed Securities [Member] | Retained Earnings [Member]          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Cumulative effect of accounting change       0  
States and Political Subdivisions [Member]          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Securities held to maturity, net of allowance for credit losses of $158 in 2022 and $158 in 2021 158 158      
States and Political Subdivisions [Member] | Retained Earnings [Member]          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Cumulative effect of accounting change       (170)  
Other [Member]          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Securities held to maturity, net of allowance for credit losses of $158 in 2022 and $158 in 2021 0 0      
Other [Member] | Retained Earnings [Member]          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Cumulative effect of accounting change       0  
Debt Securities [Member]          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Securities held to maturity, net of allowance for credit losses of $158 in 2022 and $158 in 2021 158 158 $ 160   $ 0
Debt Securities [Member] | Retained Earnings [Member]          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Cumulative effect of accounting change       (170)  
Commitments to Extend Credit [Member] | Retained Earnings [Member]          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Cumulative effect of accounting change       (31,108)  
Pre-Adoption Allowance [Member] | Commercial Portfolio Segment [Member]          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Financing Receivable, Allowance for Credit Loss       51,593  
Pre-Adoption Allowance [Member] | Commercial and Industrial Total Energy Loans [Member]          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Financing Receivable, Allowance for Credit Loss       37,382  
Pre-Adoption Allowance [Member] | Commercial Real Estate Portfolio Segment [Member]          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Financing Receivable, Allowance for Credit Loss       31,037  
Pre-Adoption Allowance [Member] | Total consumer real estate loans [Member]          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Financing Receivable, Allowance for Credit Loss       4,113  
Pre-Adoption Allowance [Member] | Consumer Loan [Member]          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Financing Receivable, Allowance for Credit Loss       8,042  
Pre-Adoption Allowance [Member] | Loans Receivable [Member]          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Financing Receivable, Allowance for Credit Loss       132,167  
Pre-Adoption Allowance [Member] | US Treasury [Member]          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Securities held to maturity, net of allowance for credit losses of $158 in 2022 and $158 in 2021       0  
Pre-Adoption Allowance [Member] | Residential Mortgage Backed Securities [Member]          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Securities held to maturity, net of allowance for credit losses of $158 in 2022 and $158 in 2021       0  
Pre-Adoption Allowance [Member] | States and Political Subdivisions [Member]          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Securities held to maturity, net of allowance for credit losses of $158 in 2022 and $158 in 2021       0  
Pre-Adoption Allowance [Member] | Other [Member]          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Securities held to maturity, net of allowance for credit losses of $158 in 2022 and $158 in 2021       0  
Pre-Adoption Allowance [Member] | Debt Securities [Member]          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Securities held to maturity, net of allowance for credit losses of $158 in 2022 and $158 in 2021       0  
Pre-Adoption Allowance [Member] | Commitments to Extend Credit [Member]          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Off-Balance Sheet, Credit Loss, Liability       500  
Accounting Standards Update 2016-13 [Member] | Commercial Portfolio Segment [Member]          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Financing Receivable, Allowance for Credit Loss       21,263  
Accounting Standards Update 2016-13 [Member] | Commercial and Industrial Total Energy Loans [Member]          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Financing Receivable, Allowance for Credit Loss       (10,453)  
Accounting Standards Update 2016-13 [Member] | Commercial Real Estate Portfolio Segment [Member]          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Financing Receivable, Allowance for Credit Loss       (13,519)  
Accounting Standards Update 2016-13 [Member] | Total consumer real estate loans [Member]          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Financing Receivable, Allowance for Credit Loss       2,392  
Accounting Standards Update 2016-13 [Member] | Consumer Loan [Member]          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Financing Receivable, Allowance for Credit Loss       (2,248)  
Accounting Standards Update 2016-13 [Member] | Loans Receivable [Member]          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Financing Receivable, Allowance for Credit Loss       (2,565)  
Accounting Standards Update 2016-13 [Member] | US Treasury [Member]          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Securities held to maturity, net of allowance for credit losses of $158 in 2022 and $158 in 2021       0  
Accounting Standards Update 2016-13 [Member] | Residential Mortgage Backed Securities [Member]          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Securities held to maturity, net of allowance for credit losses of $158 in 2022 and $158 in 2021       0  
Accounting Standards Update 2016-13 [Member] | States and Political Subdivisions [Member]          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Securities held to maturity, net of allowance for credit losses of $158 in 2022 and $158 in 2021       215  
Accounting Standards Update 2016-13 [Member] | Other [Member]          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Securities held to maturity, net of allowance for credit losses of $158 in 2022 and $158 in 2021       0  
Accounting Standards Update 2016-13 [Member] | Debt Securities [Member]          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Securities held to maturity, net of allowance for credit losses of $158 in 2022 and $158 in 2021 $ 0 $ 0   215  
Accounting Standards Update 2016-13 [Member] | Commitments to Extend Credit [Member]          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Off-Balance Sheet, Credit Loss, Liability       39,377  
Post-Adoption Allowance [Member] | Commercial Portfolio Segment [Member]          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Financing Receivable, Allowance for Credit Loss       72,856  
Post-Adoption Allowance [Member] | Commercial and Industrial Total Energy Loans [Member]          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Financing Receivable, Allowance for Credit Loss       26,929  
Post-Adoption Allowance [Member] | Commercial Real Estate Portfolio Segment [Member]          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Financing Receivable, Allowance for Credit Loss       17,518  
Post-Adoption Allowance [Member] | Total consumer real estate loans [Member]          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Financing Receivable, Allowance for Credit Loss       6,505  
Post-Adoption Allowance [Member] | Consumer Loan [Member]          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Financing Receivable, Allowance for Credit Loss       5,794  
Post-Adoption Allowance [Member] | Loans Receivable [Member]          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Financing Receivable, Allowance for Credit Loss       129,602  
Post-Adoption Allowance [Member] | US Treasury [Member]          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Securities held to maturity, net of allowance for credit losses of $158 in 2022 and $158 in 2021       0  
Post-Adoption Allowance [Member] | Residential Mortgage Backed Securities [Member]          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Securities held to maturity, net of allowance for credit losses of $158 in 2022 and $158 in 2021       0  
Post-Adoption Allowance [Member] | States and Political Subdivisions [Member]          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Securities held to maturity, net of allowance for credit losses of $158 in 2022 and $158 in 2021       215  
Post-Adoption Allowance [Member] | Other [Member]          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Securities held to maturity, net of allowance for credit losses of $158 in 2022 and $158 in 2021       0  
Post-Adoption Allowance [Member] | Debt Securities [Member]          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Securities held to maturity, net of allowance for credit losses of $158 in 2022 and $158 in 2021       215  
Post-Adoption Allowance [Member] | Commitments to Extend Credit [Member]          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Off-Balance Sheet, Credit Loss, Liability       $ 39,877