Note 6 - Intangible Assets and Goodwill - Summary of Intangible Assets (Details) - USD ($)	Mar. 31, 2017	Mar. 31, 2016
Intangible assets, gross	$ 2,842,302	$ 1,210,000
Less accumulated amortization and impairment	(1,465,603)	(100,888)
Intangible assets, net	1,376,699	1,109,112
Trade Names [Member]
Intangible assets, gross	442,000	120,000
Customer Relationships [Member]
Intangible assets, gross	751,000
Noncompete Agreements [Member]
Intangible assets, gross	69,700
Certification Marks [Member]
Intangible assets, gross	47,000
Patents [Member]
Intangible assets, gross	1,090,000	1,090,000
Computer Software, Intangible Asset [Member]
Intangible assets, gross	420,360
Other Intangible Assets [Member]
Intangible assets, gross	$ 22,242

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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