Note 8 - Note Payable, Bank (Details) (USD $)	1 Months Ended
Aug. 21, 2008	Mar. 31, 2013	Mar. 31, 2012
Debt Disclosure [Text Block]
Debt Instrument, Face Amount (in Dollars)	$ 200,000
Debt Instrument, Basis Spread on Variable Rate	2.00%
Debt Instrument, Interest Rate, Stated Percentage		2.15%	2.30%

Face (par) amount of debt instrument at time of issuance.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 55

-Paragraph 8

-URI http://asc.fasb.org/extlink&oid=6584090&loc=d3e28878-108400

Name:	us-gaap_DebtInstrumentFaceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant