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Investment Securities - Amortized Cost and Fair Values of Debt Securities Held to Maturity (Details) $ in Thousands | Dec. 31, 2015 USD ($)
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Schedule of Held-to-maturity Securities [Line Items] |
Amortized Cost | $ 384,324
Gross Unrealized Gains | 331
Gross Unrealized Losses | (2,314)
Estimated Fair Value | 382,341
Obligations of U.S. Government-Sponsored Enterprises [Member] |
Schedule of Held-to-maturity Securities [Line Items] |
Amortized Cost | 31,910
Gross Unrealized Gains | 301
Gross Unrealized Losses | (58)
Estimated Fair Value | 32,153
Mortgage - Backed Securities - Residential [Member] | US Government Agencies Debt Securities [Member] |
Schedule of Held-to-maturity Securities [Line Items] |
Amortized Cost | 4,775
Gross Unrealized Gains | 0
Gross Unrealized Losses | (7)
Estimated Fair Value | 4,768
Mortgage - Backed Securities - Residential [Member] | Obligations of U.S. Government-Sponsored Enterprises [Member] |
Schedule of Held-to-maturity Securities [Line Items] |
Amortized Cost | 315,609
Gross Unrealized Gains | 30
Gross Unrealized Losses | (1,824)
Estimated Fair Value | 313,815
Mortgage - Backed Securities - Commercial [Member] | US Government Agencies Debt Securities [Member] |
Schedule of Held-to-maturity Securities [Line Items] |
Amortized Cost | 16,843
Gross Unrealized Gains | 0
Gross Unrealized Losses | (247)
Estimated Fair Value | 16,596
Mortgage - Backed Securities - Commercial [Member] | Obligations of U.S. Government-Sponsored Enterprises [Member] |
Schedule of Held-to-maturity Securities [Line Items] |
Amortized Cost | 15,187
Gross Unrealized Gains | 0
Gross Unrealized Losses | (178)
Estimated Fair Value | $ 15,009

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