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Fair Value Fair Value (Impaired Financing Receivables Additional Information) (Details) - USD ($) $ in Thousands | 6 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Jun. 30, 2019 | Dec. 31, 2018 | Jun. 30, 2018
Schedule of Impaired Financing Receivables Additional Information [Line Items] |  |  |
Book Value Of Impaired Loans Carried At Fair Value | $ 4,283 | $ 6,503 |
Partial Charge-Offs On Impaired Loans carried at Fair Value | 3,158 | 3,630 |
Impaired Financing Receivable, Related Allowance | 2,379 | 2,273 |
impaired Financing Receivable, loans not held at Fair Value, Carrying Amount | 43,664 | 39,472 |
Impaired Financing Receivable, Recorded Investment | 50,255 | 48,144 | $ 61,750
Impaired Loan Fair Value | 4,212 | 6,399 |
Impaired Financing Receivable, loans not held at Fair Value, Recorded Investment | 45,972 | 41,641 |
Partial Charge-offs on Impaired Loans carried at Cost | 2,955 | 7,616 |
Impaired Financing Receivable, Carrying Value | 47,876 | 45,871 |
Partial Charge-Offs On Impaired Loans | 6,113 | 11,246 |
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment | 2,379 | 2,273 |
Financing Receivable, not collateral dependent [Domain] |  |  |
Schedule of Impaired Financing Receivables Additional Information [Line Items] |  |  |
Impaired Financing Receivable, Related Allowance | 2,308 | 2,169 |
Commercial Receivables, excluding Commercial, Financial, and Agricultural [Domain] |  |  |
Schedule of Impaired Financing Receivables Additional Information [Line Items] |  |  |
Impaired Financing Receivable, Related Allowance | $ 71 | $ 104 |

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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=118936363&loc=SL6953423-111524 + Details
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