The Company And Summary Of Significant Accounting Policies (Narrative) (Details) - USD ($)	12 Months Ended
Apr. 30, 2015	Apr. 30, 2014
The Company And Summary Of Significant Accounting Policies [Line Items]
Gain (loss) on foreign currency transactions	$ (500,000)	$ 14,000
Disclosure of major customers	For the year ended April 30, 2015, we had one client that accounted for 8% of consolidated revenues and constituted 0% of consolidated accounts receivable at April 30, 2015. For the year ended April 30, 2014, the same client accounted for 17% of consolidated revenues and constituted 19% of consolidated accounts receivable at April 30, 2014. The Company had one customer that accounted for 16% of consolidated accounts receivable at April 30, 2015.
Capitalized software costs	$ 0
Goodwill impairment charges	$ 0
Software revenue recognition, fee recognition period	1 year
Deferred revenue	$ 7,584,000	8,590,000
Limited warranty for product and services, period	90 days
Share vesting period, years	4 years
Reserves for uncertain tax positions	$ 0
Accrued interest or penalties associated with unrecognized tax benefits		0
Interest expense associated with unrecognized tax benefits		$ 0
Software License Revenue [Member] \| International [Member]
The Company And Summary Of Significant Accounting Policies [Line Items]
Concentration risk percentage	51.00%	37.00%
Services Revenue [Member] \| International [Member]
The Company And Summary Of Significant Accounting Policies [Line Items]
Concentration risk percentage	47.00%	33.00%
One Client [Member] \| Accounts Receivable [Member]
The Company And Summary Of Significant Accounting Policies [Line Items]
Concentration risk percentage	0.00%	19.00%
One Client [Member] \| Sales [Member]
The Company And Summary Of Significant Accounting Policies [Line Items]
Concentration risk percentage	8.00%	17.00%
One Customer [Member] \| Accounts Receivable [Member]
The Company And Summary Of Significant Accounting Policies [Line Items]
Concentration risk percentage	16.00%
Software Service, Support and Maintenance Arrangement [Member]
The Company And Summary Of Significant Accounting Policies [Line Items]
Deferred revenue	$ 1,900,000	$ 1,200,000
Maximum [Member]
The Company And Summary Of Significant Accounting Policies [Line Items]
Useful life	7 years
Minimum [Member]
The Company And Summary Of Significant Accounting Policies [Line Items]
Useful life	3 years

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