Note 6 - Stockholders' Equity (Details) - Activity in Level Three Warrants (USD $)	9 Months Ended	12 Months Ended
Dec. 26, 2014	Mar. 31, 2014
Activity in Level Three Warrants [Abstract]
Level 3 Warrants, beginning of period	$ 409,000	$ 292,000
Change in fair value of warrant liability	(231,000)	117,000
Level 3 Warrants, end of period	$ 178,000	$ 409,000

Amount of increase (decrease) of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258

Name:	us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityPeriodIncreaseDecrease
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration