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COSTS AND ESTIMATED EARNINGS ON UNCOMPLETED CONTRACTS (Details Textual) (USD $)	12 Months Ended
	Apr. 30, 2013	Apr. 30, 2014 Cooper Project [Member]
Debt Instrument [Line Items]
Increase In Gross Profit	$ 2,179,000	$ 1,641,000

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- Definition

The amount of increase in gross profit during the period due to the revisions in estimated contract profits.

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No definition available.

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