Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 280

-SubTopic 10

-Section 50

-Paragraph 41

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e9038-108599

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

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-Article 5

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Segment Information (Narrative) (Details) (USD $)	3 Months Ended		9 Months Ended
Segment Information (Narrative) (Details) (USD $)	Jan. 31, 2015	Jan. 31, 2014	Jan. 31, 2015	Jan. 31, 2014	Apr. 30, 2014
Revenues from External Customers and Long-Lived Assets [Line Items]
Number of reportable segments			2us-gaap_NumberOfReportableSegments
Revenues	$ 5,694,000us-gaap_Revenues	$ 7,888,000us-gaap_Revenues	$ 19,008,000us-gaap_Revenues	$ 23,588,000us-gaap_Revenues
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	2,400,000	5,400,000	11,400,000	15,900,000
Long-lived assets	17,500,000		17,500,000		18,800,000
All Other Countries [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	3,300,000	2,500,000	7,600,000	7,800,000
Long-lived assets	$ 0		$ 0		$ 0