Note 8 - Notes Payable - Notes Due to Related Parties (Details) (Parentheticals) - First Francis [Member] - USD ($)	6 Months Ended	12 Months Ended
Jun. 30, 2018	Dec. 31, 2017	Jul. 01, 2016
Promissory Note 1 [Member]
Notes payable, face value	$ 2,000,000	$ 2,000,000	$ 2,000,000
Notes payable, quarterly payment	$ 60,911	$ 60,911
Notes payable, interest rate	4.00%	4.00%	4.00%
Notes payable, Maturity Date	Jul. 01, 2022	Jul. 01, 2022
Promissory Note 2 [Member]
Notes payable, face value	$ 2,768,662	$ 2,768,662	$ 2,768,662
Notes payable, quarterly payment	$ 84,321	$ 84,321
Notes payable, interest rate	4.00%	4.00%	4.00%
Notes payable, Maturity Date	Jul. 01, 2022	Jul. 01, 2022

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

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 30
-Section 45
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- Definition

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

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- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
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Amount of the required periodic payments including both interest and principal payments.

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