Note 1 - Summary of Significant Interim Accounting Policies (Detail) - Earnings Per Share Data (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Net earnings used in the computation of basic and diluted earnings per share (in Dollars)	$ 977,000	$ 932,000	$ 1,304,000	$ 1,531,000
Weighted average shares outstanding - basic	6,066,244	5,995,147	6,046,059	5,986,987
Common stock equivalents	74,742	96,971	95,742	94,557
Weighted average shares outstanding - diluted	6,140,986	6,092,118	6,141,801	6,081,544
Basic
Net earnings (in Dollars per share)	$ 0.16	$ 0.16	$ 0.22	$ 0.26
Diluted
Net earnings (in Dollars per share)	$ 0.16	$ 0.15	$ 0.21	$ 0.25