Note 17 - Fair Value Measurements and Fair Values Of Financial Instruments (Details) - Estimated Fair Values and Carrying Amounts of Financial and Off-Balance Sheet Instruments (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Financial assets
Cash and cash equivalents, carrying amount	$ 16,286,000	$ 15,453,000	$ 10,555,000
Cash and cash equivalents, fair value	16,286,000	15,453,000
Investment securities available-for-sale, carrying amount	388,670,000	401,502,000
Available-for-sale Securities	388,670,000	401,502,000
Investment securities held-to-maturity, carrying amount	146,000	146,000
Investment securities held-to-maturity, fair value	162,000	166,000
Restricted investment in bank stocks, carrying amount	1,764,000	2,244,000
Restricted investment in bank stocks, fair value	1,764,000	2,244,000
Loans held-for-sale		1,616,000
Loans held-for-sale		1,674,000
Net loans, carrying amount	492,791,000	467,961,000
Net loans, fair value	491,635,000	474,330,000
Mortgage servicing rights, carrying amount	519,000	448,000
Mortgage servicing rights, fair value	643,000	464,000
Accrued interest receivable, carrying amount	2,579,000	2,803,000
Accrued interest receivable, fair value	2,579,000	2,803,000
Financial liabilities
Deposits, carrying amount	814,532,000	801,638,000
Short-term borrowings, carrying amount	35,156,000	32,488,000
Short-term borrowings, fair value	35,156,000	32,488,000
Long-term debt, carrying amount	5,000,000	5,287,000
Long-term debt, fair value	5,056,000	5,694,000
Accrued interest payable, carrying amount	392,000	487,000
Accrued interest payable, fair value	392,000	487,000
With No Stated Maturities [Member] | Fair Value, Inputs, Level 1 [Member]
Financial liabilities
Deposits, fair value	574,987,000	532,404,000
With No Stated Maturities [Member]
Financial liabilities
Deposits, carrying amount	574,987,000	532,404,000
Deposits, fair value	574,987,000	532,404,000
With Stated Maturities [Member] | Fair Value, Inputs, Level 2 [Member]
Financial liabilities
Deposits, fair value	241,959,000	273,878,000
With Stated Maturities [Member]
Financial liabilities
Deposits, carrying amount	239,545,000	269,234,000
Deposits, fair value	241,959,000	273,878,000
Fair Value, Inputs, Level 1 [Member]
Financial assets
Cash and cash equivalents, fair value	16,286,000	15,453,000
Investment securities available-for-sale, carrying amount	6,625,000	4,055,000
Available-for-sale Securities	6,625,000	4,055,000
Restricted investment in bank stocks, fair value	1,764,000	2,244,000
Financial liabilities
Short-term borrowings, fair value	35,156,000	32,488,000
Fair Value, Inputs, Level 2 [Member]
Financial assets
Investment securities available-for-sale, carrying amount	379,976,000	395,485,000
Available-for-sale Securities	379,976,000	395,485,000
Investment securities held-to-maturity, fair value	162,000	166,000
Loans held-for-sale		1,674,000
Accrued interest receivable, fair value	2,579,000	2,803,000
Financial liabilities
Long-term debt, fair value	5,056,000	5,694,000
Accrued interest payable, fair value	392,000	487,000
Fair Value, Inputs, Level 3 [Member]
Financial assets
Investment securities available-for-sale, carrying amount	2,069,000	1,962,000
Available-for-sale Securities	2,069,000	1,962,000
Net loans, fair value	491,635,000	474,330,000
Mortgage servicing rights, fair value	$ 643,000	$ 464,000