Quarterly report pursuant to Section 13 or 15(d)

Consolidated Statements of Operations (Unaudited)

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Consolidated Statements of Operations (Unaudited) (USD $)
3 Months Ended 9 Months Ended
Jan. 31, 2014
Jan. 31, 2013
Jan. 31, 2014
Jan. 31, 2013
Income Statement [Abstract]        
Revenues $ 7,641,079 $ 6,438,961 $ 22,418,038 $ 21,396,469
Costs and expenses:        
Cost of sales 6,223,013 4,928,798 17,869,323 17,005,203
Engineering 303,942 152,388 922,961 548,224
Selling, general and administrative 1,910,085 2,069,826 5,580,085 6,613,321
Gain on asset disposal 17,916    120,916   
Total costs and expenses 8,419,124 7,151,012 24,251,453 24,166,748
Loss from operations (778,045) (712,051) (1,833,415) (2,770,279)
Other income (expense):        
Interest expense, net (69,831) (73,586) (245,826) (216,336)
Currency gain (loss) 1,090 3,974 12,633 (18,522)
Total other expense, net (68,741) (69,612) (233,193) (234,858)
Loss before income taxes (846,786) (781,663) (2,066,608) (3,005,137)
Income tax expense            
Net loss $ (846,786) $ (781,663) $ (2,066,608) $ (3,005,137)
Net loss per share of common stock        
Basic $ (0.40) $ (0.44) $ (1.08) $ (1.68)
Diluted $ (0.40) $ (0.44) $ (1.08) $ (1.68)