Note 5 - Earnings Per Share (Details) - Computation of Basic and Diluted Earnings Per Share (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Computation of Basic and Diluted Earnings Per Share [Abstract]
Numerator for basic and diluted earnings per share - net income (in Dollars)	$ 1,894	$ 2,505	$ 4,302	$ 4,976
Denominator for basic earnings per share - weighted average shares outstanding	3,243,867	3,190,552	3,238,020	3,185,728
Effect of dilutive securities - employee stock options	12,088	17,774	11,048	14,865
Denominator for diluted earnings per share - adjusted weighted average shares outstanding	3,255,955	3,208,326	3,249,068	3,200,593
Earnings per share - basic (in Dollars per share)	$ 0.58	$ 0.79	$ 1.33	$ 1.56
Earnings per share - diluted (in Dollars per share)	$ 0.58	$ 0.78	$ 1.32	$ 1.55