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Note 12 - Derivatives and Fair Value Disclosures (Tables)

12 Months Ended

Dec. 31, 2017

Notes Tables

Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]

					December 31,
					2016								2017
Derivatives designated as hedging instruments		Balance Sheet Location			Asset Derivatives				Liability Derivatives				Asset Derivatives				Liability Derivatives
Interest Rate Swap Agreements		Non current assets — Fair value of derivatives			263,635				—				645,169				—
Interest Rate Swap Agreements		Non current liabilities — Fair value of derivatives			—				364,823				—				126,525
Total derivatives designated as hedging instruments					263,635				364,823				645,169				126,525

Derivative Instruments, Gain (Loss) [Table Text Block]

					Year Ended December 31,
Derivatives not designated as hedging instruments		Location of Gain/(Loss) Recognized			2015				2016				2017
Interest Rate Swap — Change in Fair Value		Loss on derivatives			1,191,050				297,656				—
Interest Rate Swap — Realized loss		Loss on derivatives			(1,243,359	)			(297,954	)			—
Foreign Currency Contract — Change in Fair Value		Loss on derivatives			583,368				—				—
Foreign Currency Contract — Realized loss		Loss on derivatives			(669,712	)			—				—
Total loss on derivatives					(138,653	)			(298	)			—

					Year Ended December 31,
Derivatives designated as hedging instruments		Location of  Loss Recognized			2015				2016				2017
Interest Rate Swap — Loss reclassified from OCI (Effective portion)		Loss on derivatives			(231,931	)			(766,898	)			(403,943	)
Total loss on derivatives					(231,931	)			(766,898	)			(403,943	)

Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]

		Unrealized Gain / (Loss) on cash flow hedges
Balance, January 1, 2015			(293,020	)
Effective portion of changes in fair value of interest swap contracts			(100,268	)
Balance, December 31, 2015			(393,288	)
Effective portion of changes in fair value of interest swap contracts			418,723
Balance, December 31, 2016			25,435
Effective portion of changes in fair value of interest swap contracts			592,460
Balance, December 31, 2017			617,895

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]

						Fair Value Measurements Using
Description		Fair Value as of December 31, 2016				Quoted Prices in Active Markets for Identical Assets (Level 1)				Significant Other Observable Inputs (Level 2)				Significant Unobservable Inputs (Level 3)
Assets/(Liabilities):
Interest Rate Swap Agreements			263,635				—				263,635				—
Interest Rate Swap Agreements			(364,823	)			—				(364,823	)			—
Total			(101,188	)			—				(101,188	)			—

						Fair Value Measurements Using
Description		Fair Value as of December 31, 2017				Quoted Prices in Active Markets for Identical Assets (Level 1)				Significant Other Observable Inputs (Level 2)				Significant Unobservable Inputs (Level 3)
Assets/(Liabilities):
Interest Rate Swap Agreements			645,169				—				645,169				—
Interest Rate Swap Agreements			(126,525	)			—				(126,525	)			—
Total			518,644				—				518,644				—

Schedule of Fair Value, Assets and Liabilities Measured on Non-recurring Basis [Table Text Block]

						Fair Value Measurements Using
Description		Fair Value as of December 31, 2016				Quoted Prices in Active Markets for Identical Assets (Level 1)				Significant Other Observable Inputs (Level 2)				Significant Unobservable Inputs (Level 3)				Impairment Loss
Long-lived assets held and used			26,500,000				—				26,500,000				—				(5,735,086	)
Total			26,500,000				—				26,500,000				—				(5,735,086	)

						Fair Value Measurements Using
Description		Fair Value as of June 30, 2017				Quoted Prices in Active Markets for Identical Assets (Level 1)				Significant Other Observable Inputs (Level 2)				Significant Unobservable Inputs (Level 3)				Impairment Loss
Long-lived assets held and used			6,000,000				—				6,000,000				—				(897,965	)
Long-lived assets held for sale			5,800,000				—				5,800,000				—				(2,327,927	)
Total			11,800,000				—				11,800,000				—				(3,225,892	)

						Fair Value Measurements Using
Description		Fair Value as of September 30, 2017				Quoted Prices in Active Markets for Identical Assets (Level 1)				Significant Other Observable Inputs (Level 2)				Significant Unobservable Inputs (Level 3)				Impairment Loss
Long-lived assets held and used			8,000,000				—				8,000,000				—				(1,258,037	)
Long-lived assets held for sale			6,250,000				—				6,250,000				—				(1,977,344	)
Total			14,250,000				—				14,250,000				—				(3,235,381	)

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Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a non-recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3).

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