Other Intangible Assets and Goodwill Other Intangible Assets and Goodwill (Details Textual) - USD ($)	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Finite-Lived Intangible Assets
Accumulated impairment charge	$ 40,159,000	$ 40,159,000
Core Deposits Intangibles
Finite-Lived Intangible Assets
Core Deposit Intangibles Acquired	$ 41,328,000	$ 4,331,000	$ 762,000

The amount of identifiable intangible assets recognized as of the acquisition date.

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Amount of accumulated impairment loss for an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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