Note 13 - Earnings Per Share (Details) - Reconciliation of Basic and Diluted Earnings Per Share (USD $)	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013
Reconciliation of Basic and Diluted Earnings Per Share [Abstract]
Net earnings used in the computation of basic and diluted earnings per share (in Dollars)	$ 2,856,000	$ 3,368,000	$ 3,907,000	$ 1,218,000	$ 1,675,000	$ 1,508,000	$ 1,438,000	$ 1,229,000	$ 11,349,000	$ 5,850,000
Weighted average shares outstanding - basic	13,481,494	13,375,566	13,207,804	13,128,946	12,905,174	12,692,520	12,252,646	12,242,360	13,298,452	12,523,176
Common stock equivalents									566,246	164,032
Total weighted average shares outstanding - diluted	14,252,310	14,004,202	13,648,540	13,553,740	13,261,852	12,807,786	12,340,242	12,338,950	13,864,698	12,687,208
Basic
Net earnings (in Dollars per share)	$ 0.21	$ 0.25	$ 0.30	$ 0.09	$ 0.13	$ 0.12	$ 0.12	$ 0.10	$ 0.85	$ 0.47
Diluted
Net earnings (in Dollars per share)	$ 0.20	$ 0.24	$ 0.29	$ 0.09	$ 0.13	$ 0.12	$ 0.12	$ 0.10	$ 0.82	$ 0.46