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CONSOLIDATED STATEMENTS OF OPERATIONS (USD $)
 3 Months Ended
Mar. 31, 2012
Mar. 31, 2011
Revenue:    
Sales $ 32,814,664 $ 22,970,462
Costs and expenses:    
Cost of goods sold 26,087,151 20,423,414
Selling, general and administrative expenses 5,609,294 2,042,757
Depreciation and amortization 152,427 87,691
Total costs and expenses 31,848,872 22,553,862
Operating income 965,792 416,600
Other expense (income) :    
Other expense (income), net (83,925) (2,245)
Interest expense 90,714 98,606
Other expense (income) 6,789 96,361
Income from continuing operations before income taxes 959,003 320,239
Income tax expense      
Income from continuing operations 959,003 320,239
Discontinued operations:    
Loss from discontinued operations, net of taxes of $0 (461,752) (124,933)
Net income $ 497,251 $ 195,306
Basic net income per common share:    
Income from continuing operations $ 0.08 $ 0.03
Loss from discontinued operations $ (0.04) $ (0.01)
Net income per share $ 0.04 $ 0.02
Diluted net income per common share:    
Income from continuing operations $ 0.08 $ 0.03
Loss from discontinued operations $ (0.04) $ (0.01)
Net income per share $ 0.04 $ 0.02
Weighted-average number of common shares    
Basic 12,174,689 10,379,119
Diluted 12,544,143 11,222,041