Goodwill and Other Intangible Assets - Goodwill, Net (Details) - USD ($)	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Goodwill, net
Goodwill, net	$ 154,757,000	$ 154,757,000
Goodwill impairment charge	0	73,041,000	$ 0
Consumer Banking
Goodwill, net
Goodwill, net	141,245,000	141,245,000
Accumulated impairment losses	73,000,000	73,000,000
Goodwill impairment charge		73,000,000
Wholesale Banking
Goodwill, net
Goodwill, net	$ 13,512,000	$ 13,512,000

Amount after accumulated impairment loss of 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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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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