Note 16 - Acquisition of Business: (Details) - Pro Forma Results of Operations (USD $)	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012
Condensed Income Statements, Captions [Line Items]
Net sales									$ 151,496,000	$ 119,486,000
Income before taxes on income									8,490,000	4,621,000
Net income	1,675,000	1,508,000	1,438,000	1,229,000	485,000	1,242,000	977,000	327,000	5,850,000	3,031,000
(Basic) (in Shares)	6,452,587	6,346,260	6,126,323	6,121,180	6,091,377	6,063,269	6,066,244	6,025,874	6,261,588	6,061,691
(Diluted) (in Shares)	6,630,926	6,403,893	6,170,121	6,169,475	6,140,372	6,148,012	6,140,986	6,142,616	6,343,604	6,142,997
Basic
Net income (in Dollars per share)	$ 0.26	$ 0.24	$ 0.23	$ 0.20	$ 0.08	$ 0.20	$ 0.16	$ 0.05	$ 0.93	$ 0.50
Diluted
Net income (in Dollars per share)	$ 0.25	$ 0.24	$ 0.23	$ 0.20	$ 0.08	$ 0.20	$ 0.16	$ 0.05	$ 0.92	$ 0.49
Pro Forma [Member]
Condensed Income Statements, Captions [Line Items]
Net sales									168,838,000	149,447,000
Income before taxes on income									9,590,000	3,407,000
Net income									$ 6,565,000	$ 2,242,000
(Basic) (in Shares)									6,365,897,000,000	6,270,308,000,000
(Diluted) (in Shares)									6,447,913,000,000	6,351,614,000,000
Basic
Net income (in Dollars per share)									$ 1.03	$ 0.36
Diluted
Net income (in Dollars per share)									$ 1.02	$ 0.35