Note 7 - Long-term Debt - Summary of Long-term Debt (Details) (Parentheticals) - USD ($)	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018
MesoScribe Technologies, Inc [Member]
Acquisition related contingent payment	$ 300,000	$ 300,000
Loan [Member]
Debt instrument, face amount	10,387,500	10,387,500
Monthly installments	$ 62,481	$ 62,481
Interest rate	3.9148%	3.9148%
HSBC Bank Mortgage Loan [Member]
Debt instrument, face amount	$ 6,000,000	$ 6,000,000
Monthly installments	$ 25,000	$ 25,000
Interest rate	3.49%	2.18%
HSBC Bank Mortgage Loan [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Variable rate	1.75%	1.75%
HSBC Bank Mortgage Loan [Member] \| Prime Rate [Member]
Variable rate	0.50%	0.50%

For contingent consideration arrangements recognized in connection with a business combination, this element represents an estimate of the high-end of the potential range (undiscounted) of the consideration which may be paid.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (c)(3)
-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479

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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

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- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

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- Definition

Amount of the required periodic payments including both interest and principal payments.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
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-SubTopic 470
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