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Other Intangibles - Schedule of Core Deposit and Other Intangibles (Details) - USD ($)
$ in Thousands
Jun. 30, 2019
Dec. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]    
Gross carrying amount $ 85,869 $ 85,869
Accumulated amortization (64,488) (61,440)
Total other intangibles $ 21,381 $ 24,429