Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - USD ($)	Mar. 31, 2017	Dec. 31, 2016
Preferred stock, par value (in dollars per share)
Preferred stock, share authorized (in shares)
Preferred stock, shares issued (in shares)
Preferred stock, shares outstanding (in shares)
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	112,500,000	112,500,000
Common stock, shares issued (in shares)	55,471,171	31,226,336
Common stock, shares outstanding (in shares)	55,466,492	31,221,657
Treasury stock, shares (in shares)	4,679	4,679
Property and equipment, accumulated depreciation	$ 2,626,722	$ 2,513,022

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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