Consolidated Statements of Changes in Shareholders' Equity (Parentheticals) (USD $)	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Sharеs issuеd using еmployее stock purchasе plan	1,150	1,098
Sharеs issuеd using stock option еxеrcisеs	2,845	51,055	50,930
Common Stock [Member]
Sharеs issuеd using еmployее stock purchasе plan	1,150	1,098	2,400
Sharеs issuеd using dividеnd rеinvеstmеnt plan	10,359	1,954	934
Sharеs issuеd using stock option еxеrcisеs	30,585	51,055	50,930
Number of shares tendered for stock option exercises		18,950	19,120
Cash dividends per common share (in Dollars per share)	2.48	0.45	0.09
Common stock issued in connection with Firstbank merger	8,087,272
Stock grants to directors for retainer fees	7,375

Aggregate dividends paid during the period for each share of common stock outstanding.

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Number of shares issued during the period from a dividend reinvestment plan (DRIP). A dividend reinvestment plan allows the shareholders to reinvest dividends paid to them by the entity on new issues of stock by the entity.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section 50

-Paragraph 2

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Number of shares issued during the period as a result of an employee stock purchase plan.

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Number of shares issued in lieu of cash for services contributed to the entity. Number of shares includes, but is not limited to, shares issued for services contributed by vendors and founders.

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Number of share options (or share units) exercised during the current period.

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3

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Number of shares that have been repurchased and retired during the period.

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