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Commitments and Contingencies (Details Textual) - USD ($)	12 Months Ended
	Apr. 30, 2015	Apr. 30, 2014
Corporate Headquarters [Member]
Commitments and Contingencies [Line Items]
Lease Expiration Date	Nov. 30, 2016
Operating Leases, Rent Expense	$ 85,000	$ 75,000
Laboratories and Office Space [Member]
Commitments and Contingencies [Line Items]
Lease Expiration Date	Jun. 30, 2016
Operating Leases, Rent Expense	$ 86,000	85,000
Israel Office Headquarters [Member]
Commitments and Contingencies [Line Items]
Operating Leases, Rent Expense	$ 0	6,000
Singapore Office Headquarters in Singapore [Member]
Commitments and Contingencies [Line Items]
Lease Expiration Date	Jan. 31, 2015
Operating Leases, Rent Expense	$ 4,000	5,000
New York Laboratory [Member]
Commitments and Contingencies [Line Items]
Lease Expiration Date	Sep. 30, 2015
Operating Leases, Rent Expense	$ 47,000	$ 4,000

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- Definition

Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line.

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No definition available.

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- Definition

Date which lease or group of leases is set to expire, in CCYY-MM-DD format.

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No definition available.

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- Details

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