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.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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The amount of identifiable intangible assets recognized as of the acquisition date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
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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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No definition available.

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Goodwill, Core Deposit Premium and Other Intangible Assets (Goodwill) (Details) - USD ($) $ in Thousands	Feb. 05, 2016	Nov. 30, 2015	Sep. 11, 2015	Aug. 21, 2015	Jan. 16, 2015	Sep. 30, 2016	Dec. 31, 2015
Goodwill [Line Items]
Goodwill						$ 127,699	$ 97,852
CIC Bancshares, Inc.
Goodwill [Line Items]
Goodwill	$ 29,848
CIC Bancshares, Inc. \| Core Deposits
Goodwill [Line Items]
Intangibles recognized	$ 6,400
Intangibles, amortization period	10 years
CIC Bancshares, Inc. \| Commercial Servicing Rights
Goodwill [Line Items]
Intangibles recognized	$ 190
Premier Valley Bank
Goodwill [Line Items]
Goodwill		$ 41,000
Premier Valley Bank \| Core Deposits
Goodwill [Line Items]
Intangibles recognized		$ 8,000
Intangibles, amortization period		10 years
Premier Valley Bank \| Commercial Servicing Rights
Goodwill [Line Items]
Intangibles recognized		$ 616
First Scottsdale Bank, N.A.
Goodwill [Line Items]
Goodwill			$ 2,500
First Scottsdale Bank, N.A. \| Core Deposits
Goodwill [Line Items]
Intangibles recognized			$ 357
Intangibles, amortization period			10 years
Community Bancorporation of New Mexico, Inc.
Goodwill [Line Items]
Goodwill				$ 213
Community Bancorporation of New Mexico, Inc. \| Core Deposits
Goodwill [Line Items]
Intangibles recognized				$ 1,700
Intangibles, amortization period				10 years
Community Banc-Corp of Sheboygan, Inc.
Goodwill [Line Items]
Goodwill					$ 18,600
Community Banc-Corp of Sheboygan, Inc. \| Core Deposits
Goodwill [Line Items]
Intangibles recognized					$ 6,000
Intangibles, amortization period					10 years
Community Banc-Corp of Sheboygan, Inc. \| Commercial Servicing Rights
Goodwill [Line Items]
Intangibles recognized					$ 4,300