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Loans Receivable - Past Due Loans (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021 | Dec. 31, 2021
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Financing Receivable, before Allowance for Credit Loss | $ 4,001,295 |  | $ 4,001,295 |  | $ 3,815,662
90 days or more and still accruing | 20 |  | 20 |  | 293
Financing Receivable, Unamortized Purchase Premium (Discount) | 2,686 |  | 2,686 |  | 3,938
Debt Securities, Held-to-maturity, Nonaccrual | 0 |  | 0 |  | 0
Debt Securities, Held-to-maturity, 90 Days or More Past Due, Still Accruing | 0 |  | 0 |  | 0
Nonaccrual [Member] |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Impaired Financing Receivable Interest Income Reversal Accrual Method | 0 | $ (1) | (14) | $ (11) |
Impaired Financing Receivable, Interest Income, Accrual Method | 31 | 216 | 1,174 | 2,763 |
Financing Receivables, 30 to 89 Days Past Due [Member] |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Financing Receivable, before Allowance for Credit Loss | 3,003 |  | 3,003 |  | 10,190
90 Days or Greater |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Financing Receivable, before Allowance for Credit Loss | 4,339 |  | 4,339 |  | 7,807
Financial Asset, Past Due |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Financing Receivable, before Allowance for Credit Loss | 7,342 |  | 7,342 |  | 17,997
Financial Asset, Not Past Due |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Financing Receivable, before Allowance for Credit Loss | 3,993,953 |  | 3,993,953 |  | 3,797,665
Commercial Portfolio Segment [Member] |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Financing Receivable, before Allowance for Credit Loss | 3,245,221 |  | 3,245,221 |  | 3,191,656
Commercial Portfolio Segment [Member] | Nonaccrual [Member] |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Impaired Financing Receivable Interest Income Reversal Accrual Method |  |  | (14) | (11) |
Impaired Financing Receivable, Interest Income, Accrual Method |  |  | 1,087 | 2,658 |
Commercial Portfolio Segment [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Financing Receivable, before Allowance for Credit Loss | 2,267 |  | 2,267 |  | 4,478
Commercial Portfolio Segment [Member] | 90 Days or Greater |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Financing Receivable, before Allowance for Credit Loss | 4,319 |  | 4,319 |  | 7,226
Commercial Portfolio Segment [Member] | Financial Asset, Past Due |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Financing Receivable, before Allowance for Credit Loss | 6,586 |  | 6,586 |  | 11,704
Commercial Portfolio Segment [Member] | Financial Asset, Not Past Due |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Financing Receivable, before Allowance for Credit Loss | 3,238,635 |  | 3,238,635 |  | 3,179,952
Commercial Portfolio Segment [Member] | Commercial and Industrial [Member] |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Financing Receivable, before Allowance for Credit Loss | 735,028 |  | 735,028 |  | 621,567
Commercial Portfolio Segment [Member] | Commercial and Industrial [Member] | Nonaccrual [Member] |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Impaired Financing Receivable Interest Income Reversal Accrual Method | 0 | (1) | (14) | (11) |
Impaired Financing Receivable, Interest Income, Accrual Method | 31 | 184 | 260 | 2,228 |
Commercial Portfolio Segment [Member] | Commercial and Industrial [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Financing Receivable, before Allowance for Credit Loss | 1,774 |  | 1,774 |  | 1,858
Commercial Portfolio Segment [Member] | Commercial and Industrial [Member] | 90 Days or Greater |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Financing Receivable, before Allowance for Credit Loss | 4,130 |  | 4,130 |  | 6,821
Commercial Portfolio Segment [Member] | Commercial and Industrial [Member] | Financial Asset, Past Due |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Financing Receivable, before Allowance for Credit Loss | 5,904 |  | 5,904 |  | 8,679
Commercial Portfolio Segment [Member] | Commercial and Industrial [Member] | Financial Asset, Not Past Due |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Financing Receivable, before Allowance for Credit Loss | 729,124 |  | 729,124 |  | 612,888
Commercial Portfolio Segment [Member] | SBA PPP Loans [Member] |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Financing Receivable, before Allowance for Credit Loss | 3,593 |  | 3,593 |  | 145,840
Commercial Portfolio Segment [Member] | SBA PPP Loans [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Financing Receivable, before Allowance for Credit Loss | 167 |  | 167 |  | 223
Commercial Portfolio Segment [Member] | SBA PPP Loans [Member] | 90 Days or Greater |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Financing Receivable, before Allowance for Credit Loss | 0 |  | 0 |  | 293
Commercial Portfolio Segment [Member] | SBA PPP Loans [Member] | Financial Asset, Past Due |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Financing Receivable, before Allowance for Credit Loss | 167 |  | 167 |  | 516
Commercial Portfolio Segment [Member] | SBA PPP Loans [Member] | Financial Asset, Not Past Due |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Financing Receivable, before Allowance for Credit Loss | 3,426 |  | 3,426 |  | 145,324
Commercial Portfolio Segment [Member] | Owner Occupied Commercial Real Estate [Member] |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Financing Receivable, before Allowance for Credit Loss | 959,486 |  | 959,486 |  | 931,150
Commercial Portfolio Segment [Member] | Owner Occupied Commercial Real Estate [Member] | Nonaccrual [Member] |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Impaired Financing Receivable Interest Income Reversal Accrual Method |  |  | 0 | 0 |
Impaired Financing Receivable, Interest Income, Accrual Method |  |  | 53 | 117 |
Commercial Portfolio Segment [Member] | Owner Occupied Commercial Real Estate [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Financing Receivable, before Allowance for Credit Loss | 30 |  | 30 |  | 2,397
Commercial Portfolio Segment [Member] | Owner Occupied Commercial Real Estate [Member] | 90 Days or Greater |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Financing Receivable, before Allowance for Credit Loss | 189 |  | 189 |  | 112
Commercial Portfolio Segment [Member] | Owner Occupied Commercial Real Estate [Member] | Financial Asset, Past Due |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Financing Receivable, before Allowance for Credit Loss | 219 |  | 219 |  | 2,509
Commercial Portfolio Segment [Member] | Owner Occupied Commercial Real Estate [Member] | Financial Asset, Not Past Due |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Financing Receivable, before Allowance for Credit Loss | 959,267 |  | 959,267 |  | 928,641
Commercial Portfolio Segment [Member] | Non Owner Occupied Commercial Real Estate [Member] |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Financing Receivable, before Allowance for Credit Loss | 1,547,114 |  | 1,547,114 |  | 1,493,099
Commercial Portfolio Segment [Member] | Non Owner Occupied Commercial Real Estate [Member] | Nonaccrual [Member] |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Impaired Financing Receivable Interest Income Reversal Accrual Method |  |  | 0 | 0 |
Impaired Financing Receivable, Interest Income, Accrual Method |  |  | 774 | 313 |
Commercial Portfolio Segment [Member] | Non Owner Occupied Commercial Real Estate [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Financing Receivable, before Allowance for Credit Loss | 296 |  | 296 |  | 0
Commercial Portfolio Segment [Member] | Non Owner Occupied Commercial Real Estate [Member] | 90 Days or Greater |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Financing Receivable, before Allowance for Credit Loss | 0 |  | 0 |  | 0
Commercial Portfolio Segment [Member] | Non Owner Occupied Commercial Real Estate [Member] | Financial Asset, Past Due |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Financing Receivable, before Allowance for Credit Loss | 296 |  | 296 |  | 0
Commercial Portfolio Segment [Member] | Non Owner Occupied Commercial Real Estate [Member] | Financial Asset, Not Past Due |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Financing Receivable, before Allowance for Credit Loss | 1,546,818 |  | 1,546,818 |  | 1,493,099
Residential Portfolio Segment [Member] |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Financing Receivable, before Allowance for Credit Loss | 296,019 |  | 296,019 |  | 164,582
Residential Portfolio Segment [Member] | Nonaccrual [Member] |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Impaired Financing Receivable Interest Income Reversal Accrual Method |  |  | 0 | 0 |
Impaired Financing Receivable, Interest Income, Accrual Method |  |  | 19 | 0 |
Residential Portfolio Segment [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Financing Receivable, before Allowance for Credit Loss | 0 |  | 0 |  | 420
Residential Portfolio Segment [Member] | 90 Days or Greater |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Financing Receivable, before Allowance for Credit Loss | 0 |  | 0 |  | 10
Residential Portfolio Segment [Member] | Financial Asset, Past Due |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Financing Receivable, before Allowance for Credit Loss | 0 |  | 0 |  | 430
Residential Portfolio Segment [Member] | Financial Asset, Not Past Due |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Financing Receivable, before Allowance for Credit Loss | 296,019 |  | 296,019 |  | 164,152
Real Estate Construction and Land Development |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Financing Receivable, before Allowance for Credit Loss | 253,020 |  | 253,020 |  | 226,883
Real Estate Construction and Land Development | Financing Receivables, 30 to 89 Days Past Due [Member] |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Financing Receivable, before Allowance for Credit Loss | 0 |  | 0 |  | 4,266
Real Estate Construction and Land Development | 90 Days or Greater |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Financing Receivable, before Allowance for Credit Loss | 0 |  | 0 |  | 571
Real Estate Construction and Land Development | Financial Asset, Past Due |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Financing Receivable, before Allowance for Credit Loss | 0 |  | 0 |  | 4,837
Real Estate Construction and Land Development | Financial Asset, Not Past Due |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Financing Receivable, before Allowance for Credit Loss | 253,020 |  | 253,020 |  | 222,046
Real Estate Construction and Land Development | One-to-four Family Real Estate Construction |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Financing Receivable, before Allowance for Credit Loss | 92,297 |  | 92,297 |  | 85,547
Real Estate Construction and Land Development | One-to-four Family Real Estate Construction | Nonaccrual [Member] |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Impaired Financing Receivable Interest Income Reversal Accrual Method |  |  | 0 | 0 |
Impaired Financing Receivable, Interest Income, Accrual Method |  |  | 0 | 73 |
Real Estate Construction and Land Development | One-to-four Family Real Estate Construction | Financing Receivables, 30 to 89 Days Past Due [Member] |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Financing Receivable, before Allowance for Credit Loss | 0 |  | 0 |  | 792
Real Estate Construction and Land Development | One-to-four Family Real Estate Construction | 90 Days or Greater |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Financing Receivable, before Allowance for Credit Loss | 0 |  | 0 |  | 0
Real Estate Construction and Land Development | One-to-four Family Real Estate Construction | Financial Asset, Past Due |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Financing Receivable, before Allowance for Credit Loss | 0 |  | 0 |  | 792
Real Estate Construction and Land Development | One-to-four Family Real Estate Construction | Financial Asset, Not Past Due |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Financing Receivable, before Allowance for Credit Loss | 92,297 |  | 92,297 |  | 84,755
Real Estate Construction and Land Development | Five or More Family Residential and Commercial Properties [Member] |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Financing Receivable, before Allowance for Credit Loss | 160,723 |  | 160,723 |  | 141,336
Real Estate Construction and Land Development | Five or More Family Residential and Commercial Properties [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Financing Receivable, before Allowance for Credit Loss | 0 |  | 0 |  | 3,474
Real Estate Construction and Land Development | Five or More Family Residential and Commercial Properties [Member] | 90 Days or Greater |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Financing Receivable, before Allowance for Credit Loss | 0 |  | 0 |  | 571
Real Estate Construction and Land Development | Five or More Family Residential and Commercial Properties [Member] | Financial Asset, Past Due |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Financing Receivable, before Allowance for Credit Loss | 0 |  | 0 |  | 4,045
Real Estate Construction and Land Development | Five or More Family Residential and Commercial Properties [Member] | Financial Asset, Not Past Due |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Financing Receivable, before Allowance for Credit Loss | 160,723 |  | 160,723 |  | 137,291
Consumer Portfolio Segment [Member] |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Financing Receivable, before Allowance for Credit Loss | 207,035 |  | 207,035 |  | 232,541
Consumer Portfolio Segment [Member] | Nonaccrual [Member] |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Impaired Financing Receivable Interest Income Reversal Accrual Method | 0 | 0 | 0 | 0 |
Impaired Financing Receivable, Interest Income, Accrual Method | 0 | $ 32 | 68 | $ 32 |
Consumer Portfolio Segment [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Financing Receivable, before Allowance for Credit Loss | 736 |  | 736 |  | 1,026
Consumer Portfolio Segment [Member] | 90 Days or Greater |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Financing Receivable, before Allowance for Credit Loss | 20 |  | 20 |  | 0
Consumer Portfolio Segment [Member] | Financial Asset, Past Due |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Financing Receivable, before Allowance for Credit Loss | 756 |  | 756 |  | 1,026
Consumer Portfolio Segment [Member] | Financial Asset, Not Past Due |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |
Financing Receivable, before Allowance for Credit Loss | $ 206,279 |  | $ 206,279 |  | $ 231,515

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