Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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

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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 loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Goodwill, Core Deposit Premium and Other Intangible Assets (Goodwill) (Details) - USD ($)	Sep. 30, 2016	Feb. 05, 2016	Mar. 31, 2017	Feb. 28, 2017	Dec. 31, 2016
Goodwill [Line Items]
Goodwill			$ 141,461,000		$ 127,699,000
Goodwill impairment	$ 0
Founders Bancorp
Goodwill [Line Items]
Goodwill				$ 13,800,000
Founders Bancorp \| Core Deposits
Goodwill [Line Items]
Intangibles recognized				$ 2,500,000
CIC Bancshares, Inc.
Goodwill [Line Items]
Goodwill		$ 29,800,000
CIC Bancshares, Inc. \| Core Deposits
Goodwill [Line Items]
Intangibles recognized		$ 6,400,000
Intangibles, amortization period		10 years
CIC Bancshares, Inc. \| Commercial Servicing Rights
Goodwill [Line Items]
Intangibles recognized		$ 190,000