Related Party Transactions (Details) (USD $)	3 Months Ended		6 Months Ended						3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended						3 Months Ended		6 Months Ended								3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended
	Oct. 31, 2012	Oct. 31, 2011	Oct. 31, 2012	Oct. 31, 2011	Apr. 30, 2012	Oct. 31, 2012 PGMC [Member] Lottery products [Member]	Apr. 30, 2012 PGMC [Member] Lottery products [Member]	Dec. 20, 2011 PGMC [Member] Lottery products [Member] Order One [Member]	Oct. 31, 2012 PGMC [Member] Lottery products and support services [Member]	Oct. 31, 2011 PGMC [Member] Lottery products and support services [Member]	Oct. 31, 2012 PGMC [Member] Lottery products and support services [Member]	Oct. 31, 2011 PGMC [Member] Lottery products and support services [Member]	Oct. 31, 2012 BLM [Member]	Oct. 31, 2011 BLM [Member]	Oct. 31, 2012 BLM [Member]	Oct. 31, 2011 BLM [Member]	Apr. 30, 2012 BLM [Member]	Oct. 31, 2012 Sports Toto Malaysia Sdn. Bhd. [Member]	Apr. 30, 2012 Sports Toto Malaysia Sdn. Bhd. [Member]	Dec. 21, 2011 Sports Toto Malaysia Sdn. Bhd. [Member]	Oct. 31, 2012 Sports Toto Malaysia Sdn. Bhd. [Member] Contract deliverables and sale of support services [Member]	Oct. 31, 2011 Sports Toto Malaysia Sdn. Bhd. [Member] Contract deliverables and sale of support services [Member]	Oct. 31, 2012 Sports Toto Malaysia Sdn. Bhd. [Member] Contract deliverables and sale of support services [Member]	Oct. 31, 2011 Sports Toto Malaysia Sdn. Bhd. [Member] Contract deliverables and sale of support services [Member]	Oct. 31, 2012 Sports Toto Malaysia Sdn. Bhd. [Member] Software support services [Member]	Apr. 30, 2012 Sports Toto Malaysia Sdn. Bhd. [Member] Software support services [Member]	Oct. 31, 2012 Natural Avenue Sdn. Bhd. [Member]	Apr. 30, 2012 Natural Avenue Sdn. Bhd. [Member]	Oct. 31, 2012 Natural Avenue Sdn. Bhd. [Member] Lottery product licensing [Member]	Apr. 30, 2012 Natural Avenue Sdn. Bhd. [Member] Lottery product licensing [Member]	Oct. 31, 2012 Natural Avenue Sdn. Bhd. [Member] Support Services and Licensing [Member]	Oct. 31, 2011 Natural Avenue Sdn. Bhd. [Member] Support Services and Licensing [Member]	Oct. 31, 2012 Natural Avenue Sdn. Bhd. [Member] Support Services and Licensing [Member]	Oct. 31, 2011 Natural Avenue Sdn. Bhd. [Member] Support Services and Licensing [Member]	Oct. 31, 2012 Sports Toto Computers Sdn. Bhd. [Member]	Oct. 31, 2011 Sports Toto Computers Sdn. Bhd. [Member]	Oct. 31, 2012 Sports Toto Computers Sdn. Bhd. [Member]	Oct. 31, 2011 Sports Toto Computers Sdn. Bhd. [Member]
Related Party Transaction [Line Items]
Revenue from related party	$ 909,000	$ 1,300,000	$ 3,100,000	$ 1,500,000					$ 3,000	$ 1,200,000	$ 1,100,000	$ 1,300,000	$ 0	$ 0	$ 0	$ 0					$ 871,000	$ 77,000	$ 1,900,000	$ 155,000							$ 35,000	$ 32,000	$ 70,000	$ 83,000
Sales revenue, related party, percentage (in hundredths)	38.00%	66.00%	54.00%	59.00%
Accounts receivable from related parties		2,600,000		2,600,000		53,000	189,000						0		0		0	2,600,000	0								0	0
Outstanding voting stock held by Berjaya Lottery Management (H.K.) Ltd. (in hundredths)	71.30%		71.30%
Payable to parent	252,000		252,000		252,000
Deferred revenues	651,000		651,000		687,000	0	264,000	1,100,000												4,300,000					9,000	9,000			11,000	4,000
Net cost and estimated earnings in excess of billings	0		0		726,000														726,000	453,000
Services incurred																																			$ 40,000	$ 50,000	$ 80,000	$ 101,000