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Note 7 - Line of Credit	12 Months Ended
	Dec. 31, 2017
Notes to Financial Statements
Debt Disclosure [Text Block]	Note 7 .     Line of Credit The Company has available an unsecured line of credit in the amount of $ 1,000,000. The balance on this line of credit was $- 0 - at December 31, 2017and 2016. The line of credit matures on June 13, 2018 and borrowings under the line will bear interest at 2.75% plus the one -month LIBOR rate.

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- Definition

The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-URI http://asc.fasb.org/topic&trid=2208564

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- References

No definition available.

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