Quarterly report pursuant to Section 13 or 15(d)

SEGMENT REPORTING (Details)

v2.4.0.8
SEGMENT REPORTING (Details) (USD $)
3 Months Ended 6 Months Ended
Oct. 31, 2013
Oct. 31, 2012
Oct. 31, 2013
Oct. 31, 2012
Apr. 30, 2013
Revenue $ 7,355,744 $ 7,958,243 $ 15,187,127 $ 19,246,260  
Depreciation and amortization 214,895 268,179 457,952 572,286  
Income (loss) before income taxes from continuing operations (488,459) 295,001 (6,304,605) 108,467  
Total assets 18,415,830 21,479,249 18,415,830 21,479,249 18,144,966
Additions of property and equipment     119,782 340,456  
Corporate [Member]
         
Revenue 0 0 0 0  
Depreciation and amortization 2,093 8,634 6,167 19,627  
Income (loss) before income taxes from continuing operations (623,318) (930,257) (7,073,254) (1,695,088)  
Total assets 2,684,408 5,780,017 2,684,408 5,780,017  
Additions of property and equipment     0 52,515  
Wireless Communication [Member]
         
Revenue 3,043,860 2,664,858 6,098,599 5,123,269  
Depreciation and amortization 25,515 34,132 51,150 71,328  
Income (loss) before income taxes from continuing operations 40,370 213,928 130,562 443,112  
Total assets 3,453,483 2,416,097 3,453,483 2,416,097  
Additions of property and equipment     27,627 35,162  
Specialty Construction [Member]
         
Revenue 1,160,780 822,840 2,033,505 1,853,639  
Depreciation and amortization 158,397 173,237 321,479 347,928  
Income (loss) before income taxes from continuing operations (51,638) 92,799 26,873 111,629  
Total assets 7,493,274 7,854,338 7,493,274 7,854,338  
Additions of property and equipment     20,353 152,721  
Electrical Power [Member]
         
Revenue 3,151,104 4,470,545 7,055,023 12,269,352  
Depreciation and amortization 28,890 52,176 79,156 133,403  
Income (loss) before income taxes from continuing operations 146,127 918,531 611,214 1,248,814  
Total assets 4,784,665 5,428,797 4,784,665 5,428,797  
Additions of property and equipment     $ 71,802 $ 100,058