Note 6 - Derivative Instruments and Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2014

Disclosure Text Block [Abstract]

Schedule of Derivative Instruments, Effect on Other Comprehensive Income (Loss) [Table Text Block]

		Effective Portion of Gain (Loss) Reclassified from Accumulated Other
		Comprehensive Income (Loss)
		Three Months Ended					Six Months Ended
	Location of Gain (Loss) Recognized	June 30, 2014		June 30, 2013			June 30, 2014		June 30, 2013
Derivatives designated as hedging instruments
Interest rate swaps	Interest expense		—	$	(776,172	)		—	$	(1,627,154	)

Fair Value, Assets Measured on Recurring Basis [Table Text Block]

	June 30, 2014						December 31, 2013
	Level 1		Level 2		Level 3		Level 1		Level 2	Level 3
Assets:
Investment	$	13,118,370		—		—	$	13,817,439			—