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Fair Value Fair Value (Impaired Financing Receivables Additional Information) (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Mar. 31, 2020 | Dec. 31, 2019 | Mar. 31, 2019
Schedule of Impaired Financing Receivables Additional Information [Line Items] |  |  |
Book Value Of Impaired Loans Carried At Fair Value | $ 2,275 | $ 2,167 |
Partial Charge-Offs On Impaired Loans carried at Fair Value | 313 | 313 |
Impaired Financing Receivable, Related Allowance | 5,531 | 5,230 |
impaired Financing Receivable, loans not held at Fair Value, Carrying Amount | 78,166 | 70,171 |
Impaired Financing Receivable, Recorded Investment | 85,851 | 77,491 | $ 50,907
Impaired Loan Fair Value | 2,154 | 2,090 |
Impaired Financing Receivable, loans not held at Fair Value, Recorded Investment | 83,576 | 75,324 |
Partial Charge-offs on Impaired Loans carried at Cost | 420 | 406 |
Impaired Financing Receivable, Carrying Value | 80,320 | 72,261 |
Partial Charge-Offs On Impaired Loans | 733 | 719 |
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment | 5,531 | 5,230 |
Financing Receivable, not collateral dependent [Domain] |  |  |
Schedule of Impaired Financing Receivables Additional Information [Line Items] |  |  |
Impaired Financing Receivable, Related Allowance | 5,410 | 5,153 |
Commercial Receivables, excluding Commercial, Financial, and Agricultural [Domain] |  |  |
Schedule of Impaired Financing Receivables Additional Information [Line Items] |  |  |
Impaired Financing Receivable, Related Allowance | $ 121 | $ 77 |

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- Definition Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953423-111524 + Details
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