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Core Deposit and Other Intangibles - Schedule of Core Deposit and Other Intangibles (Details) - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Intangible Assets, Net (Excluding Goodwill) [Abstract]    
Gross carrying amount $ 58,360 $ 53,702
Core deposit intangible and other intangibles acquired 4,181 4,658
Accumulated amortization (45,164) $ (42,329)
Core deposit intangible and other intangibles reduction (742)
Core Deposit and Other Intangibles $ 16,635 $ 16,031