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Fair Value of Financial Instruments - Fair Value Hierarchy (Details) - USD ($) $ in Thousands | Jun. 30, 2016 | Dec. 31, 2015
--- | --- | ---
Total available-for-sale securities | $ 433,806 | $ 213,698
Loans held-for-sale (mandatory pricing agreements) | 38,128 | 24,065
IRLCs |  |
Derivative financial instrument | 1,724 | 582
Forward contracts |  |
Derivative financial instrument |  | 30
Loans held-for-sale (mandatory pricing agreements) |  |
Loans held-for-sale (mandatory pricing agreements) | 38,128 | 24,065
Quoted Prices in Active Markets for Identical Assets (Level 1) |  |
Total available-for-sale securities | 3,013 | 2,979
Loans held-for-sale (mandatory pricing agreements) | 0 | 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | IRLCs |  |
Derivative financial instrument | 0 | 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Forward contracts |  |
Derivative financial instrument | (1,045) | 30
Quoted Prices in Active Markets for Identical Assets (Level 1) | Loans held-for-sale (mandatory pricing agreements) |  |
Loans held-for-sale (mandatory pricing agreements) | 0 | 0
Significant Other Observable Inputs (Level 2) |  |
Total available-for-sale securities | 430,793 | 210,719
Loans held-for-sale (mandatory pricing agreements) | 6,375 | 12,453
Significant Other Observable Inputs (Level 2) | IRLCs |  |
Derivative financial instrument | 0 | 0
Significant Other Observable Inputs (Level 2) | Forward contracts |  |
Derivative financial instrument | 0 | 0
Significant Other Observable Inputs (Level 2) | Loans held-for-sale (mandatory pricing agreements) |  |
Loans held-for-sale (mandatory pricing agreements) | 38,128 | 24,065
Significant Unobservable Inputs (Level 3) |  |
Total available-for-sale securities | 0 | 0
Loans held-for-sale (mandatory pricing agreements) |  | 0
Significant Unobservable Inputs (Level 3) | IRLCs |  |
Derivative financial instrument | 1,724 | 582
Significant Unobservable Inputs (Level 3) | Forward contracts |  |
Derivative financial instrument | 0 | 0
Significant Unobservable Inputs (Level 3) | Loans held-for-sale (mandatory pricing agreements) |  |
Loans held-for-sale (mandatory pricing agreements) | 0 | 0
U.S. Government-sponsored agencies |  |
Total available-for-sale securities | 75,678 | 37,750
U.S. Government-sponsored agencies | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |
Total available-for-sale securities | 0 | 0
U.S. Government-sponsored agencies | Significant Other Observable Inputs (Level 2) |  |
Total available-for-sale securities | 75,678 | 37,750
U.S. Government-sponsored agencies | Significant Unobservable Inputs (Level 3) |  |
Total available-for-sale securities | 0 | 0
Municipal securities |  |
Total available-for-sale securities | 80,798 | 21,469
Municipal securities | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |
Total available-for-sale securities | 0 | 0
Municipal securities | Significant Other Observable Inputs (Level 2) |  |
Total available-for-sale securities | 80,798 | 21,469
Municipal securities | Significant Unobservable Inputs (Level 3) |  |
Total available-for-sale securities | 0 | 0
Mortgage-backed securities |  |
Total available-for-sale securities | 235,911 | 113,052
Mortgage-backed securities | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |
Total available-for-sale securities | 0 | 0
Mortgage-backed securities | Significant Other Observable Inputs (Level 2) |  |
Total available-for-sale securities |  | 113,052
Mortgage-backed securities | Significant Unobservable Inputs (Level 3) |  |
Total available-for-sale securities | 0 | 0
Asset-backed securities |  |
Total available-for-sale securities | 19,332 | 19,361
Asset-backed securities | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |
Total available-for-sale securities | 0 | 0
Asset-backed securities | Significant Other Observable Inputs (Level 2) |  |
Total available-for-sale securities |  | 19,361
Asset-backed securities | Significant Unobservable Inputs (Level 3) |  |
Total available-for-sale securities | 0 | 0
Corporate securities |  |
Total available-for-sale securities | 19,074 | 19,087
Corporate securities | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |
Total available-for-sale securities | 0 | 0
Corporate securities | Significant Other Observable Inputs (Level 2) |  |
Total available-for-sale securities | 19,074 | 19,087
Corporate securities | Significant Unobservable Inputs (Level 3) |  |
Total available-for-sale securities | 0 | 0
Other securities |  |
Total available-for-sale securities | 3,013 | 2,979
Other securities | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |
Total available-for-sale securities |  | 2,979
Other securities | Significant Other Observable Inputs (Level 2) |  |
Total available-for-sale securities | 0 | 0
Other securities | Significant Unobservable Inputs (Level 3) |  |
Total available-for-sale securities | 0 | $ 0
Forward contracts | Forward contracts |  |
Derivative financial instrument | $ (1,045) |

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