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Note 8 - Accrued Liabilities (Tables)

12 Months Ended

Dec. 31, 2016

Notes Tables

Schedule of Accrued Liabilities [Table Text Block]

		December 31,
		2015				2016
Interest on long-term debt			2,536,034				2,660,766
Administrative expenses			291,932				206,840
Vessel operating and voyage expenses			2,774,973				2,431,873
Total			5,602,939				5,299,479

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Tabular disclosure of the components of accrued liabilities.

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