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Loans Receivable - Modified TDRs (Details) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 USD ($) contract | Dec. 31, 2019 USD ($) contract Contract | Dec. 31, 2018 USD ($) contract
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Related Specific Valuation Allowance |  | $ 2,143 |
Commercial business |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Related Specific Valuation Allowance |  | 1,944 |
Commercial business | Commercial and industrial |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Related Specific Valuation Allowance |  | 1,372 |
Commercial business | Owner-occupied CRE |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Related Specific Valuation Allowance |  | 426 |
Commercial business | Non-owner occupied CRE |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Related Specific Valuation Allowance |  | 146 |
Real estate construction and land development | Residential |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Related Specific Valuation Allowance |  | 0 |
Consumer |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Related Specific Valuation Allowance |  | $ 143 |
Troubled Debt Restructured Loans |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Number of Contracts | contract | 152 | 65 | 53
Outstanding Principal Balance | $ 84,768 | $ 35,419 | $ 22,505
Number of Contracts (1) | contract | 8 | 17 | 8
Recorded Investment | $ 5,316 | $ 14,048 | $ 2,620
Troubled Debt Restructured Loans | Commercial business |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Number of Contracts | contract | 98 | 52 | 38
Outstanding Principal Balance | $ 81,172 | $ 35,025 | $ 21,597
Number of Contracts (1) | contract | 8 | 17 | 6
Recorded Investment | $ 5,316 | $ 14,048 | $ 1,955
Troubled Debt Restructured Loans | Commercial business | Commercial and industrial |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Number of Contracts | contract | 75 | 44 | 31
Outstanding Principal Balance | $ 36,118 | $ 31,122 | $ 16,132
Number of Contracts (1) | contract | 4 | 13 | 5
Recorded Investment | $ 2,136 | $ 12,854 | $ 1,890
Troubled Debt Restructured Loans | Commercial business | Owner-occupied CRE |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Number of Contracts | contract | 14 | 4 | 4
Outstanding Principal Balance | $ 19,326 | $ 1,695 | $ 2,521
Number of Contracts (1) | 2 | 3 | 1
Recorded Investment | $ 1,369 | $ 1,142 | $ 65
Troubled Debt Restructured Loans | Commercial business | Non-owner occupied CRE |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Number of Contracts | contract | 9 | 4 | 3
Outstanding Principal Balance | $ 25,728 | $ 2,208 | $ 2,944
Number of Contracts (1) | contract | 2 | 1 | 0
Recorded Investment | $ 1,811 | $ 52 | $ 0
Troubled Debt Restructured Loans | Real estate construction and land development |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Number of Contracts | contract | 5 | 1 | 2
Outstanding Principal Balance | $ 2,376 | $ 237 | $ 665
Troubled Debt Restructured Loans | Real estate construction and land development | Residential |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Number of Contracts | contract | 4 | 1 | 2
Outstanding Principal Balance | $ 1,926 | $ 237 | $ 665
Number of Contracts (1) | contract | 0 | 0 | 2
Recorded Investment | $ 0 | $ 0 | $ 665
Troubled Debt Restructured Loans | Real estate construction and land development | Commercial and multifamily |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Number of Contracts | contract | 1 | 0 | 0
Outstanding Principal Balance | $ 450 | $ 0 | $ 0
Troubled Debt Restructured Loans | Consumer |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Number of Contracts | contract | 48 | 12 | 13
Outstanding Principal Balance | $ 1,198 | $ 157 | $ 243
Troubled Debt Restructured Loans | Residential |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Number of Contracts | contract | 1 | 0 | 0
Outstanding Principal Balance | $ 22 | $ 0 | $ 0
90 Days or Greater | Troubled Debt Restructured Loans |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Number of Contracts (1) | contract |  | 6 | 1
Past Modified Maturity Date | Troubled Debt Restructured Loans |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Number of Contracts (1) | contract | 8 | 11 | 7
Modified subsequently | Troubled Debt Restructured Loans |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Related Specific Valuation Allowance |  | $ 88 | $ 260

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