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Provision for Income Taxes (Details 1) | 12 Months Ended
--- | ---
Apr. 30, 2015 | Apr. 30, 2014
Federal income tax at statutory rate | 34.00% | 34.00%
State income tax, net of federal benefit | 2.60% | 2.10%
Permanent differences | 0.90% | (5.60%)
Increase in uncertain tax position | (0.80%) | 0.00%
Other | (6.90%) | (2.10%)
Change in valuation allowance | (30.80%) | (27.20%)
Changes in tax rates | 0.00% | (1.40%)
Income tax expense | (1.10%) | (0.20%)

X
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- Definition Percentage of domestic federal statutory tax rate applicable to pretax income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32687-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 6.I) -URI http://asc.fasb.org/extlink&oid=34349781&loc=d3e330036-122817 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32698-109319 + Details
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