Note 7 - Commitments and Contingencies (Details Textual) - USD ($)		3 Months Ended	6 Months Ended
Oct. 01, 2013	Sep. 30, 2015	Sep. 30, 2015	Sep. 30, 2014
IHS [Member] \| Engineering Services [Member]
Sales Revenue, Services, Net	$ 3,000	$ 9,000	$ 18,000
Operating Leases, Rent Expense			$ 63,000	$ 63,000

Aggregate revenue during the period from services rendered in the normal course of business, after deducting allowances and discounts.

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(d))

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

Name:	us-gaap_SalesRevenueServicesNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration