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Note 19 - Business Acquisition and Unaudited Pro Forma Information (Detail) - Business acquisition, pro forma information (Diamond Bar [Member], USD $)
12 Months Ended
Dec. 31, 2011
Diamond Bar [Member]
 
Net sales (in Dollars) $ 47,710,088
Net income (in Dollars) $ 5,250,294
Basic weighted average shares outstanding 14,506,915
Diluted weighted average shares outstanding 14,697,206
Basic net earnings per share (in Dollars per share) $ 0.36
Diluted net earnings per share (in Dollars per share) $ 0.36