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Allowance for Credit Losses (Non-PCI Impaired Loans and Leases) (Details) | 12 Months Ended
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Dec. 31, 2019 USD ($)
Financing Receivable, Allowance for Credit Losses [Line Items] |
Non-PCI Impaired Loans Collective Maximum Balance Collectively Evaluated for Impairment | $ 500,000
Impaired Financing Receivable Collectively Evaluated | 41,000,000
Non-PCI Loans |
Financing Receivable, Allowance for Credit Losses [Line Items] |
Impaired Financing Receivable, Average Recorded Investment | 169,938,000
Impaired Financing Receivable, Interest Income, Accrual Method | 5,410,000
Non-PCI Loans | Commercial |
Financing Receivable, Allowance for Credit Losses [Line Items] |
Impaired Financing Receivable, Average Recorded Investment | 81,477,000
Impaired Financing Receivable, Interest Income, Accrual Method | 2,761,000
Non-PCI Loans | Noncommercial |
Financing Receivable, Allowance for Credit Losses [Line Items] |
Impaired Financing Receivable, Average Recorded Investment | 88,461,000
Impaired Financing Receivable, Interest Income, Accrual Method | 2,649,000
Non-PCI Loans | Construction and land development | Commercial |
Financing Receivable, Allowance for Credit Losses [Line Items] |
Impaired Financing Receivable, Average Recorded Investment | 3,915,000
Impaired Financing Receivable, Interest Income, Accrual Method | 53,000
Non-PCI Loans | Construction and land development | Noncommercial |
Financing Receivable, Allowance for Credit Losses [Line Items] |
Impaired Financing Receivable, Average Recorded Investment | 3,589,000
Impaired Financing Receivable, Interest Income, Accrual Method | 116,000
Non-PCI Loans | Mortgage | Commercial |
Financing Receivable, Allowance for Credit Losses [Line Items] |
Impaired Financing Receivable, Average Recorded Investment | 64,363,000
Impaired Financing Receivable, Interest Income, Accrual Method | 2,188,000
Non-PCI Loans | Mortgage | Noncommercial |
Financing Receivable, Allowance for Credit Losses [Line Items] |
Impaired Financing Receivable, Average Recorded Investment | 52,045,000
Impaired Financing Receivable, Interest Income, Accrual Method | 1,386,000
Non-PCI Loans | Other commercial real estate | Commercial |
Financing Receivable, Allowance for Credit Losses [Line Items] |
Impaired Financing Receivable, Average Recorded Investment | 919,000
Impaired Financing Receivable, Interest Income, Accrual Method | 27,000
Non-PCI Loans | Commercial and industrial | Commercial |
Financing Receivable, Allowance for Credit Losses [Line Items] |
Impaired Financing Receivable, Average Recorded Investment | 11,884,000
Impaired Financing Receivable, Interest Income, Accrual Method | 482,000
Non-PCI Loans | Other | Commercial |
Financing Receivable, Allowance for Credit Losses [Line Items] |
Impaired Financing Receivable, Average Recorded Investment | 396,000
Impaired Financing Receivable, Interest Income, Accrual Method | 11,000
Non-PCI Loans | Revolving mortgage | Noncommercial |
Financing Receivable, Allowance for Credit Losses [Line Items] |
Impaired Financing Receivable, Average Recorded Investment | 29,516,000
Impaired Financing Receivable, Interest Income, Accrual Method | 1,009,000
Non-PCI Loans | Consumer | Noncommercial |
Financing Receivable, Allowance for Credit Losses [Line Items] |
Impaired Financing Receivable, Average Recorded Investment | 3,311,000
Impaired Financing Receivable, Interest Income, Accrual Method | $ 138,000

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- Definition Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=123577603&loc=d3e5212-111524 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=123577603&loc=d3e5258-111524 + Details
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