No definition available.

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- Definition

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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- Definition

Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, resulting from a business combination.

+ References

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266

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- Definition

Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

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Note 6 - Goodwill and Other Intangible Assets (Details) - USD ($) $ in Thousands			3 Months Ended	9 Months Ended
	Aug. 31, 2014	Sep. 30, 2013	Mar. 31, 2015	Sep. 30, 2015	Feb. 27, 2015	Dec. 31, 2014
Note 6 - Goodwill and Other Intangible Assets (Details) [Line Items]
Goodwill				$ 314,282		$ 108,095
Community First Bancshares, Inc. [Member]
Note 6 - Goodwill and Other Intangible Assets (Details) [Line Items]
Goodwill					$ 111,300
Goodwill, Acquired During Period				111,300
Liberty Bancshares, Inc. [Member]
Note 6 - Goodwill and Other Intangible Assets (Details) [Line Items]
Goodwill					$ 95,608
Goodwill, Acquired During Period				$ 95,600
Core Deposit Premium [Member]
Note 6 - Goodwill and Other Intangible Assets (Details) [Line Items]
Finite-Lived Intangible Asset, Useful Life				10 years
Core Deposit Premium [Member] \| Community First Bancshares, Inc. [Member]
Note 6 - Goodwill and Other Intangible Assets (Details) [Line Items]
Finite-lived Intangible Assets Acquired			$ 11,300
Core Deposit Premium [Member] \| Liberty Bancshares, Inc. [Member]
Note 6 - Goodwill and Other Intangible Assets (Details) [Line Items]
Finite-lived Intangible Assets Acquired			$ 14,600
Books of Business Intangible [Member] \| Community First Bancshares, Inc. [Member]
Note 6 - Goodwill and Other Intangible Assets (Details) [Line Items]
Finite-lived Intangible Assets Acquired				$ 400
Books of Business Intangible [Member] \| Delta Acquisition [Member]
Note 6 - Goodwill and Other Intangible Assets (Details) [Line Items]
Finite-lived Intangible Assets Acquired	$ 5,100
Books of Business Intangible [Member] \| Minimum [Member]
Note 6 - Goodwill and Other Intangible Assets (Details) [Line Items]
Finite-Lived Intangible Asset, Useful Life				10 years
Books of Business Intangible [Member] \| Maximum [Member]
Note 6 - Goodwill and Other Intangible Assets (Details) [Line Items]
Finite-Lived Intangible Asset, Useful Life				15 years
Purchased Credit Card Relationships [Member]
Note 6 - Goodwill and Other Intangible Assets (Details) [Line Items]
Finite-Lived Intangible Asset, Useful Life		5 years
Finite-lived Intangible Assets Acquired		$ 2,100