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Fair Value of Assets & Liabilities - Nonrecurring Fair Value Measurements (Details) - USD ($) $ in Thousands | Sep. 30, 2018 | Dec. 31, 2017 | Sep. 30, 2017
--- | --- | --- | ---
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Loans held-for-sale (elected fair value) |  | $ 16,418 |  | $ 20,881 |  |
Loans, net of unearned income |  | 27,350,214 | [1] | 27,658,929 | [1] | $ 20,166,091
OREO | [2] | 28,628 |  | 43,382 |  |
Non Recurring |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Loans, net of unearned income |  | 26,995 |  | 26,666 |  |
OREO |  | 25,726 |  | 39,566 |  |
Other assets |  | 23,329 |  | 26,521 |  |
Non Recurring | Loans held-for-sale—first mortgages |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Loans held-for-sale (elected fair value) |  | 542 |  | 618 |  |
Non Recurring | Loans held-for-sale—SBAs and USDA |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Loans held-for-sale (elected fair value) |  | 619,160 |  | 466,977 |  |
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 | Loans held-for-sale—first mortgages |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Loans held-for-sale (elected fair value) |  | 0 |  | 0 |  |
Non Recurring | Level 1 | Loans held-for-sale—SBAs and USDA |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Loans held-for-sale (elected fair value) |  | 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 | Loans held-for-sale—first mortgages |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Loans held-for-sale (elected fair value) |  | 0 |  | 0 |  |
Non Recurring | Level 2 | Loans held-for-sale—SBAs and USDA |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Loans held-for-sale (elected fair value) |  | 618,142 |  | 465,504 |  |
Non Recurring | Level 3 |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Loans, net of unearned income |  | 26,995 |  | 26,666 |  |
OREO |  | 25,726 |  | 39,566 |  |
Other assets |  | 23,329 |  | 26,521 |  |
Non Recurring | Level 3 | Loans held-for-sale—first mortgages |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Loans held-for-sale (elected fair value) |  | 542 |  | 618 |  |
Non Recurring | Level 3 | Loans held-for-sale—SBAs and USDA |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Loans held-for-sale (elected fair value) |  | $ 1,018 |  | $ 1,473 |  |
[1] | September 30, 2018 and December 31, 2017 include $20.8 million and $22.7 million, respectively, of held-to-maturity consumer mortgage loans secured by residential real estate in process of foreclosure.
[2] | September 30, 2018 and December 31, 2017 include $11.0 million and $12.2 million, respectively, of foreclosed residential real estate.

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