Goodwill, Core Deposit Intangible and Other Intangible Assets - Additional Information (Details) - USD ($)	Sep. 30, 2017	Dec. 31, 2016
Indefinite Lived Intangible Assets By Major Class [Line Items]
Other intangible assets, net	$ 17,522,000	$ 19,826,000
Trademark
Indefinite Lived Intangible Assets By Major Class [Line Items]
Other intangible assets, net	$ 39,000	$ 50,000

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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