Segment Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jul. 31, 2013 Segment	Jul. 31, 2012	Apr. 30, 2013
Segment Information [Abstract]
Number of operating segments	2
Segment Reporting Information [Line Items]
Total revenues	$ 7,766	$ 3,290
Income (loss) from operations	1,121	919
Depreciation and amortization	46	41
Segment assets	14,873	8,117	16,834	[1]
Gaming Business [Member]
Segment Reporting Information [Line Items]
Total revenues	6,870	2,487
Income (loss) from operations	1,011	951
Depreciation and amortization	26	27
Segment assets	13,237	5,511
Voting Business [Member]
Segment Reporting Information [Line Items]
Total revenues	896	803
Income (loss) from operations	110	(32)
Depreciation and amortization	20	14
Segment assets	$ 1,636	$ 2,606

[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.