Segment Information (Narrative) (Details) (USD $)	3 Months Ended			3 Months Ended
Jul. 31, 2013	Jul. 31, 2012	Jul. 31, 2013 United States [Member]	Jul. 31, 2012 United States [Member]	Jan. 31, 2013 United States [Member]	Apr. 30, 2012 United States [Member]	Jul. 31, 2013 All Other Countries [Member]	Jul. 31, 2012 All Other Countries [Member]	Apr. 30, 2013 All Other Countries [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 7,964,000	$ 9,638,000	$ 5,500,000	$ 6,800,000			$ 2,500,000	$ 2,800,000
Long-Lived Assets					$ 20,800,000	$ 21,500,000	$ 0		$ 1,000

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 Statement of Financial Accounting Standard (FAS)

-Number 131

-Paragraph 38

-Subparagraph b(1)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Name:	us-gaap_NoncurrentAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant