Subsequent Events (Details) (USD $)					9 Months Ended
	Jan. 31, 2014	Apr. 30, 2013		Jan. 31, 2014 BLM [Member]	Jan. 31, 2014 Subsequent Event [Member]	Jan. 31, 2014 Subsequent Event [Member] BLM [Member]
Subsequent Event [Line Items]
Reverse stock split					9,245,317-for-1
Common shares, shares outstanding (in shares)	12,963,000	12,963,000	[1]			9,245,317
Outstanding voting stock held by Berjaya Lottery Management (H.K.) Ltd. (in hundredths)	71.30%			71.30%		71.30%
Cash paid for fractional share owned (in dollars per share)					$ 1.33
Period after which reincorporation and reverse stock split will be effective					20 days

[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.