Note 8 - Concentrations (Details Textual)	12 Months Ended
Mar. 31, 2017 USD ($)	Mar. 31, 2016 USD ($)
Revenues	$ 5,271,231	$ 4,513,070
Customer Concentration Risk [Member] \| Sales Revenue, Net [Member]
Concentration Risk, Number of Customers	1	1
Concentration Risk, Percentage	59.00%	45.00%
Customer Concentration Risk [Member] \| Sales Revenue, Net [Member] \| Foreign Customers [Member]
Concentration Risk, Percentage	6.30%	8.30%
Revenues	$ 332,693	$ 374,130
Customer Concentration Risk [Member] \| Accounts Receivable [Member]
Concentration Risk, Number of Customers	1	1
Concentration Risk, Percentage	83.00%	43.00%

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=84177426&loc=d3e6351-108592

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13531-108611

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=84177426&loc=d3e6404-108592

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 21
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13537-108611

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration