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Loans and Allowance for Loan Losses (Troubled Debt Restructurings Modified by Portfolio Segment) (Details) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2016 USD ($) contract | Mar. 31, 2015 USD ($) contract
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | contract | 11 | 3
Pre-Modification Outstanding Recorded Investment | $ 51,246 | $ 88
Post-Modification Outstanding Recorded Investment | $ 51,246 | $ 88
Originated Loans [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | contract | 11 | 3
Pre-Modification Outstanding Recorded Investment | $ 51,246 | $ 88
Post-Modification Outstanding Recorded Investment | $ 51,246 | $ 88
Acquired Loans [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | contract |  |
Pre-Modification Outstanding Recorded Investment |  |
Post-Modification Outstanding Recorded Investment |  |
FDIC Acquired Loans [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | contract |  |
Pre-Modification Outstanding Recorded Investment |  |
Post-Modification Outstanding Recorded Investment |  |
Commercial Non-Real Estate [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | contract | 11 |
Pre-Modification Outstanding Recorded Investment | $ 51,246 |
Post-Modification Outstanding Recorded Investment | $ 51,246 |
Commercial Non-Real Estate [Member] | Originated Loans [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | contract | 11 |
Pre-Modification Outstanding Recorded Investment | $ 51,246 |
Post-Modification Outstanding Recorded Investment | $ 51,246 |
Commercial Non-Real Estate [Member] | Acquired Loans [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | contract |  |
Pre-Modification Outstanding Recorded Investment |  |
Post-Modification Outstanding Recorded Investment |  |
Commercial Non-Real Estate [Member] | FDIC Acquired Loans [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | contract |  |
Pre-Modification Outstanding Recorded Investment |  |
Post-Modification Outstanding Recorded Investment |  |
Commercial Real Estate [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | contract |  |
Pre-Modification Outstanding Recorded Investment |  |
Post-Modification Outstanding Recorded Investment |  |
Commercial Real Estate [Member] | Originated Loans [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | contract |  |
Pre-Modification Outstanding Recorded Investment |  |
Post-Modification Outstanding Recorded Investment |  |
Commercial Real Estate [Member] | Acquired Loans [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | contract |  |
Pre-Modification Outstanding Recorded Investment |  |
Post-Modification Outstanding Recorded Investment |  |
Commercial Real Estate [Member] | FDIC Acquired Loans [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | contract |  |
Pre-Modification Outstanding Recorded Investment |  |
Post-Modification Outstanding Recorded Investment |  |
Residential Mortgages [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | contract |  | 2
Pre-Modification Outstanding Recorded Investment |  | $ 68
Post-Modification Outstanding Recorded Investment |  | $ 68
Residential Mortgages [Member] | Originated Loans [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | contract |  | 2
Pre-Modification Outstanding Recorded Investment |  | $ 68
Post-Modification Outstanding Recorded Investment |  | $ 68
Residential Mortgages [Member] | Acquired Loans [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | contract |  |
Pre-Modification Outstanding Recorded Investment |  |
Post-Modification Outstanding Recorded Investment |  |
Residential Mortgages [Member] | FDIC Acquired Loans [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | contract |  |
Pre-Modification Outstanding Recorded Investment |  |
Post-Modification Outstanding Recorded Investment |  |
Consumer [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | contract |  | 1
Pre-Modification Outstanding Recorded Investment |  | $ 20
Post-Modification Outstanding Recorded Investment |  | $ 20
Consumer [Member] | Originated Loans [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | contract |  | 1
Pre-Modification Outstanding Recorded Investment |  | $ 20
Post-Modification Outstanding Recorded Investment |  | $ 20
Consumer [Member] | Acquired Loans [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | contract |  |
Pre-Modification Outstanding Recorded Investment |  |
Post-Modification Outstanding Recorded Investment |  |
Consumer [Member] | FDIC Acquired Loans [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | contract |  |
Pre-Modification Outstanding Recorded Investment |  |
Post-Modification Outstanding Recorded Investment |  |
Construction and Land Development [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | contract |  |
Pre-Modification Outstanding Recorded Investment |  |
Post-Modification Outstanding Recorded Investment |  |
Construction and Land Development [Member] | Originated Loans [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | contract |  |
Pre-Modification Outstanding Recorded Investment |  |
Post-Modification Outstanding Recorded Investment |  |
Construction and Land Development [Member] | Acquired Loans [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | contract |  |
Pre-Modification Outstanding Recorded Investment |  |
Post-Modification Outstanding Recorded Investment |  |
Construction and Land Development [Member] | FDIC Acquired Loans [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | contract |  |
Pre-Modification Outstanding Recorded Investment |  |
Post-Modification Outstanding Recorded Investment |  |

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