The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 142

-Paragraph 45

-Subparagraph a(2)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

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-Name Accounting Standards Codification

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-Section 45

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Note 7 - Goodwill and Identifiable Intangible Assets (Detail) - Estimated future amortization expense for identifiable intangible assets (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Twelve months ended December 31, 2012 (actual)	$ 5,368	$ 5,975	$ 6,333
Estimate for year ended December 31,
2013	4,704
2014	4,270
2015	3,856
2016	3,504
2017	3,077
Core Deposits [Member]
Twelve months ended December 31, 2012 (actual)	4,868
Estimate for year ended December 31,
2013	4,304
2014	3,946
2015	3,594
2016	3,292
2017	2,913
Mechant Draft Processing [Member]
Twelve months ended December 31, 2012 (actual)	500
Estimate for year ended December 31,
2013	400
2014	324
2015	262
2016	212
2017	$ 164