Note 7 - Stock Based Compensation (Details) - USD ($)	3 Months Ended
Jun. 30, 2016	Jun. 30, 2015
Details
Stock options issued for services	$ 143,765	$ 187,406
Employee Stock Ownership Plan (ESOP), Compensation Expense	143,765
Remaining Compensation Expense Arising From Equity Awards Issued	$ 1,142,898

The amount of plan compensation cost recognized during the period.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 40
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=65895303&loc=d3e17540-113929

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