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Summary of Significant Accounting Policies (Details Textual) - USD ($)	9 Months Ended		12 Months Ended
	Jan. 31, 2016	Jan. 31, 2015	Apr. 30, 2015	Apr. 30, 2014	Mar. 11, 2015	Nov. 30, 2014	Apr. 30, 2013
Estimated Fair Value Of Warrants				$ 2,000,000	$ 1,600,000
Allowance for Doubtful Accounts Receivable			$ 2,000	2,000
Unbilled Receivables, Current			636,000	884,000
Restricted Cash and Cash Equivalents, Noncurrent	$ 150,000		163,000	165,000
Depreciation, Depletion and Amortization, Total			214,000	213,000
Deferred Revenue			$ 258,000
Capital Leases, Future Minimum Payments, Executory Costs						$ 149,000
Capital Leases of Lessee, Contingent Rentals, Basis Spread on Variable Rate			5.00%
Capital Leases, Income Statement, Amortization Expense			$ 12,405
Unrecognized Tax Benefits	165,000		100,000	0			$ 0
Capital Leases Monthly Payments						$ 3,000
Capital Lease Obligations Incurred	$ 0	$ 124,000	$ 124,000	$ 0

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The estimated fair value of warrants.

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For an unclassified balance sheet, a valuation allowance for receivables due a company that are expected to be uncollectible.

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-Name Accounting Standards Codification
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The increase during the period in capital lease obligations due to entering into new capital leases.

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Amounts to be paid by lessee to lessor for maintenance, insurance, and tax expenses related to the leased asset.

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The charge for the use of long-lived depreciable capital leased assets for the period.

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The percentage points added to the reference rate to compute the variable rate on the lessee's capital lease.

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Amount of deferred revenue as of balance sheet date. Deferred revenue represents collections of cash or other assets related to a revenue producing activity for which revenue has not yet been recognized. Generally, an entity records deferred revenue when it receives consideration from a customer before achieving certain criteria that must be met for revenue to be recognized in conformity with GAAP.

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Amount received for services rendered and products shipped, but not yet billed, for non-contractual agreements due within one year or the normal operating cycle, if longer.

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