Segment Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Oct. 31, 2013	Oct. 31, 2012	Oct. 31, 2013 Segment	Oct. 31, 2012	Apr. 30, 2013
Segment Information [Abstract]
Number of operating segments			2
Segment Reporting Information [Line Items]
Total revenues	$ 8,974	$ 2,397	$ 16,740	$ 5,687
Income (loss) from operations	3,211	492	4,332	1,411
Depreciation and amortization	49	46	95	87
Segment assets	14,125	8,794	14,125	8,794	16,834	[1]
Gaming Business [Member]
Segment Reporting Information [Line Items]
Total revenues	8,661	1,145	15,531	3,632
Income (loss) from operations	3,707	214	4,718	1,165
Depreciation and amortization	29	29	55	56
Segment assets	12,463	6,830	12,463	6,830
Voting Business [Member]
Segment Reporting Information [Line Items]
Total revenues	313	1,252	1,209	2,055
Income (loss) from operations	(496)	278	(386)	246
Depreciation and amortization	20	17	40	31
Segment assets	$ 1,662	$ 1,964	$ 1,662	$ 1,964

[1] Derived from the consolidated audited financial statements included in the Company's Annual Report on Form 10-K for the fiscal year ended April 30, 2013 filed with the SEC.