Note 7 - Preferred Stock and Common Stock (Details Textual)		1 Months Ended	3 Months Ended			6 Months Ended		11 Months Ended	12 Months Ended
	Jun. 20, 2017	Feb. 29, 2016 USD ($) shares	Jun. 30, 2018 USD ($) shares	Sep. 30, 2017 USD ($) shares	Jun. 30, 2017 USD ($)	Jun. 30, 2018 USD ($) shares	Jun. 30, 2017 USD ($)	Dec. 31, 2017 USD ($) $ / shares shares	Dec. 31, 2017 USD ($) $ / shares shares	Dec. 31, 2016 shares	Apr. 30, 2017 USD ($) shares
Proceeds from Issuance of Private Placement | $								$ 1,940,005	$ 1,940,005
Convertible Preferred Stock Converted to Other Securities | $			$ 0	$ 148,125	$ 148,125	$ 0	$ 148,125
Common Stock, Shares, Issued, Total			2,610,568			2,610,568		2,610,568	2,610,568
Preferred Stock, Dividend Rate, Percentage						10.00%
Preferred Stock, Amount of Preferred Dividends in Arrears | $						$ 27,361			$ 27,361
Preferred Stock, Amount of Preferred Dividends Undeclared and Unaccrued | $			$ 7,500			$ 7,500
Board of Directors, Officers, and Officers of Subsidiary [Member]
Common Stock, Shares, Outstanding, Ending Balance			838,060			838,060
Percentage of Outstanding of Common Stock						32.10%
Banyan Rail Holdings LLC [Member]
Common Stock, Shares, Outstanding, Ending Balance			91,348			91,348
Marino Family Holdings LLC [Member]
Common Stock, Shares, Outstanding, Ending Balance			351,966			351,966
Series A Preferred Stock Holders [Member]
Stock Issued During Period, Shares, Stock Splits				257,831
Series A Preferred Stock [Member]
Convertible Preferred Stock, Shares Issued upon Conversion											20
Shares Issued for Each Dollar of Preferred Dividend											0.2
Convertible Preferred Stock, Total Shares Issued upon Conversion											9,875
Dividends Payable | $											$ 301,656
Preferred Stock, Dividend Rate, Percentage						10.00%
Common Stock Dividends, Shares		29,856
Dividends, Common Stock, Total | $		$ 29,249
Shares After Reverse Stock Split [Member]
Common Stock, Shares, Outstanding, Ending Balance			1,059,581			1,059,581
Share From Private Placement [Member]
Common Stock, Shares, Outstanding, Ending Balance			1,293,156			1,293,156
Shares From Preferred Stock and Preferred Dividend Exchange [Member]
Common Stock, Shares, Outstanding, Ending Balance			257,831			257,831
Private Placement [Member]
Shares Issued, Price Per Share | $ / shares								$ 1.50	$ 1.50
Stock Issued During Period, Shares, New Issues								1,293,334		2,500
Reverse Stock Split [Member]
Stockholders' Equity Note, Stock Split, Conversion Ratio	10