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Note 14 - Purchases of Assets (Details Textual) - USD ($)		12 Months Ended
	Oct. 31, 2017	Dec. 31, 2018	Dec. 31, 2017
Payments to Acquire Businesses, Gross			$ 419,813
Tantaline A/S of Nordborg [Member] | Asset Purchase Agreement [Member]
Business Combination, Consideration Transferred, Total	$ 800,000
Payments to Acquire Businesses, Gross	500,000
MesoScribe Technologies, Inc [Member]
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High		300,000	$ 300,000
MesoScribe Technologies, Inc [Member] | Asset Purchase Agreement [Member]
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High	300,000
Business Combination, Contingent Consideration, Liability, Current	$ 200,000
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability		$ (100,000)

X

- Definition

Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

+ References

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- Definition

Amount of increase (decrease) in the value of a contingent consideration liability, including, but not limited to, differences arising upon settlement.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
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- Definition

Amount of liability recognized arising from contingent consideration in a business combination, expected to be settled within one year or the normal operating cycle, if longer.

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