Provision for Income Taxes (Tables)

12 Months Ended

Apr. 30, 2015

Income Tax Disclosure [Abstract]

Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]

The components of the provision (benefit) for income taxes are as follows (in thousands):

	Year Ended April 30, 2015
	Federal		State		Foreign		Total
Current	$	-	$	3	$	124	$	127
Deferred		(25,948)		(1,771)		8		(27,711)
Change in valuation allowance		25,948		1,771		(8)		27,711
Total	$	-	$	3	$	124	$	127

	Year Ended April 30, 2014
	Federal		State		Foreign		Total
Current	$	-	$	5	$	12	$	17
Deferred		(2,015)		(148)		-		(2,163)
Change in valuation allowance		2,015		148		-		2,163
Total	$	-	$	5	$	12	$	17

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

A reconciliation between the Company’s effective tax rate and the United States statutory tax rate for the years ended April 30, 2015 and 2014 is as follows:

	Year Ended April 30,
	2015			2014
Federal income tax at statutory rate		34.0	%		34.0	%
State income tax, net of federal benefit		2.6			2.1
Permanent differences		0.9			(5.6)
Increase in uncertain tax position		(0.8)			-
Other		(6.9)			(2.1)
Change in valuation allowance		(30.8)			(27.2)
Changes in tax rates		-			(1.4)
Income tax expense		(1.1)	%		(0.2)	%

Schedule of Deferred Tax Assets and Liabilities [Table Text Block]

Significant components of the Company’s deferred tax assets and liabilities as of April 30, 2015 and 2014 consist of the following (in thousands):

	As of April 30,
	2015		2014
Accrued liabilities	$	21	$	38
Depreciation and amortization		-		9
State taxes		1		1
Stock-based compensation expense		4,803		4,511
Capitalized research and development costs		433		556
Foreign net operating loss carry-forward		235		244
Net operating loss carry-forward		9,719		5,608
Total deferred tax assets		15,212		10,968
Less: Valuation allowance		(15,212)		(10,968)
Net deferred tax asset	$	-	$	-

Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block]

The following table indicates the changes to the Company’s uncertain tax positions for the period and years ended April 30, 2015 and 2014 in thousands:

	Year Ended April 30,
	2015		2014
Balance, beginning of the year	$	-	$	-
Addition based on tax positions related to prior years		21		-
Addition based on tax positions related to current year		79		-
Balance, end of year	$	100	$	-