Note 13 - Reconciliation of Basic and Diluted Earnings Per Share (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Net income	$ 13,066,000	$ 11,349,000
(Basic) (in shares)	13,761,009	13,298,452
Common stock equivalents (in shares)	817,635	566,246
Total weighted average shares outstanding - diluted (in shares)	14,578,644	13,864,698
Weighted average number of shares outstanding during the period
Net earnings (in dollars per share)	$ 0.95	$ 0.85
Net earnings (in dollars per share)	$ 0.90	$ 0.82