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Fair Value of Assets & Liabilities - Nonrecurring Fair Value Measurements (Details) - USD ($) $ in Thousands | Jun. 30, 2019 | Dec. 31, 2018 | Jun. 30, 2018
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Loans held-for-sale |  | $ 15,092 |  | $ 16,273 |  |
Loans, net of unearned income |  | 29,712,810 | [1] | 27,535,532 | [1] | $ 27,701,740
OREO | [2] | 19,286 |  | 25,290 |  |
Non Recurring |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Loans, net of unearned income |  | 91,779 |  | 48,259 |  |
OREO |  | 16,593 |  | 22,387 |  |
Other assets |  | 13,940 |  | 8,845 |  |
Non Recurring | Other Consumer Loans Class |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Loans held-for-sale |  |  |  | 18,712 |  |
Non Recurring | Small Business Administration And USDA |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Loans held-for-sale |  | 369,081 |  | 578,291 |  |
Non Recurring | First Mortgages |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Loans held-for-sale |  | 523 |  | 541 |  |
Non Recurring | Level 1 |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Loans, net of unearned income |  | 0 |  | 0 |  |
OREO |  | 0 |  | 0 |  |
Other assets |  | 0 |  | 0 |  |
Non Recurring | Level 1 | Other Consumer Loans Class |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Loans held-for-sale |  |  |  | 0 |  |
Non Recurring | Level 1 | Small Business Administration And USDA |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Loans held-for-sale |  | 0 |  | 0 |  |
Non Recurring | Level 1 | First Mortgages |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Loans held-for-sale |  | 0 |  | 0 |  |
Non Recurring | Level 2 |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Loans, net of unearned income |  | 0 |  | 0 |  |
OREO |  | 0 |  | 0 |  |
Other assets |  | 0 |  | 0 |  |
Non Recurring | Level 2 | Other Consumer Loans Class |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Loans held-for-sale |  |  |  | 18,712 |  |
Non Recurring | Level 2 | Small Business Administration And USDA |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Loans held-for-sale |  | 368,082 |  | 577,280 |  |
Non Recurring | Level 2 | First Mortgages |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Loans held-for-sale |  | 0 |  | 0 |  |
Non Recurring | Level 3 |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Loans, net of unearned income |  | 91,779 |  | 48,259 |  |
OREO |  | 16,593 |  | 22,387 |  |
Other assets |  | 13,940 |  | 8,845 |  |
Non Recurring | Level 3 | Other Consumer Loans Class |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Loans held-for-sale |  |  |  | 0 |  |
Non Recurring | Level 3 | Small Business Administration And USDA |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Loans held-for-sale |  | 999 |  | 1,011 |  |
Non Recurring | Level 3 | First Mortgages |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Loans held-for-sale |  | $ 523 |  | $ 541 |  |
[1] | June 30, 2019 and December 31, 2018 include $17.3 million and $28.6 million, respectively, of held-to-maturity consumer mortgage loans secured by residential real estate in process of foreclosure.
[2] | June 30, 2019 and December 31, 2018 include $8.2 million and $9.7 million, respectively, of foreclosed residential real estate.

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