Commitments and Contingencies Schedule of Future Minimum Lease Payments (Details) (USD $)	Apr. 30, 2013
Capital Lease Obligations [Member]
Capital Leases, Future Minimum Payments Due, Next Twelve Months	$ 28,000
Capital Leases, Future Minimum Payments Due in Two Years	4,000
Capital Leases, Future Minimum Payments Due in Three Years	0
Capital Leases, Future Minimum Payments Due	32,000
Operating Lease Obligations [Member]
Operating Leases, Future Minimum Payments Due, Next Twelve Months	120,000
Operating Leases, Future Minimum Payments, Due in Two Years	9,000
Operating Leases, Future Minimum Payments, Due in Three Years	5,000
Capital Leases, Future Minimum Payments Due	33,000
Operating Leases, Future Minimum Payments Due	$ 134,000