Note 5 - Derivative Instruments and Fair Value Measurements (Details) - Effect of Derivative Instruments on Statement of Operations (Designated as Hedging Instrument [Member], Interest Rate Swap [Member], USD $)	3 Months Ended
	Mar. 31, 2013
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member]
Derivatives designated as hedging instruments:
Interest rate swaps	$ (868,289)