Description of Business and Significant Accounting Policies - Advertising (Details Narrative) (USD $)	3 Months Ended	6 Months Ended
Oct. 31, 2014	Oct. 31, 2013	Oct. 31, 2014	Oct. 31, 2013
Marketing and Advertising Expense
Advertising expense, approximate	$ 49,000us-gaap_AdvertisingExpense	$ 45,000us-gaap_AdvertisingExpense	$ 61,000us-gaap_AdvertisingExpense	$ 90,000us-gaap_AdvertisingExpense

Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 720

-SubTopic 35

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6420018&loc=d3e36677-107848

Name:	us-gaap_AdvertisingExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration