Note 5 - Income Tax Matters (Details Textual) - USD ($)	6 Months Ended
Jun. 30, 2017	Jun. 30, 2016
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount	$ (63,159)	$ 7,637

Amount of increase (decrease) in the valuation allowance for a specified deferred tax asset.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 45
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=84176650&loc=d3e32123-109318

Name:	us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration