Commitments and Contingencies Schedule of Future Minimum Lease Payments (Details) (USD $)	Apr. 30, 2014
Capital Lease Obligations [Member]
Capital Leases, Future Minimum Payments Due, Next Twelve Months	$ 2,000
Capital Leases, Future Minimum Payments Due in Two Years	0
Capital Leases, Future Minimum Payments Due in Three Years	0
Capital Leases, Future Minimum Payments Due	2,000
Operating Lease Obligations [Member]
Operating Leases, Future Minimum Payments Due, Next Twelve Months	141,000
Operating Leases, Future Minimum Payments, Due in Two Years	129,000
Operating Leases, Future Minimum Payments, Due in Three Years	19,000
Capital Leases, Future Minimum Payments Due	3,000
Operating Leases, Future Minimum Payments Due	$ 289,000