Consolidated Statements of Changes in Stockholders' Equity (Parentheticals) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Common cash dividends declared, dividends per share (in Dollars per share)	$ 0.08	$ 0.08	$ 0.08
Proceeds from issuance of common stock, stock options exercised, shares	79,638	23,659	41,258
Common Stock [Member]
Issuance of common stock, acquisition of Community National Bancorporation, shares			834,715
Proceeds from issuance of common stock, Employee Stock Purchase Plan, Shares	24,033	25,321	27,110
Proceeds from issuance of common stock, stock options exercised, shares	78,909	23,659	41,258
Exchange of common stock, stock options exercised, shares (in Dollars)			$ 7,679
Exchange of common stock, restricted stock vested, shares	3,902	10,300	16,798
Proceeds from issuance of common stock, net of issuance costs, shares	3,680,000
Retirement of treasury stock, shares	121,246