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COSTS AND ESTIMATED EARNINGS ON UNCOMPLETED CONTRACTS (Details) (USD $)
Apr. 30, 2014
Apr. 30, 2013
Costs incurred on uncompleted contracts $ 14,457,907 $ 61,281,224
Provision for loss on uncompleted contracts 0 (11,148)
Estimated contract earnings (losses) 3,291,077 (1,850,297)
Gross Total 17,748,984 59,419,779
Less: Billings to date 18,766,199 60,434,797
Total (1,017,215) (1,015,018)
Costs and estimated earnings in excess of billings on uncompleted contracts 431,348 329,141
Billings in excess of cost and estimated earnings on uncompleted contracts 1,448,563 1,344,159
Total $ (1,017,215) $ (1,015,018)