Note 5 - Derivative Instruments and Fair Value Measurements (Details) - Interest Rate Swaps (USD $)	9 Months Ended
	Sep. 30, 2013	Dec. 31, 2012
Note 5 - Derivative Instruments and Fair Value Measurements (Details) - Interest Rate Swaps [Line Items]
Notional Amount Outstanding		$ 166,300,000
Interest Rate Swap 1 [Member]
Note 5 - Derivative Instruments and Fair Value Measurements (Details) - Interest Rate Swaps [Line Items]
Notional Amount Outstanding		81,500,000
Fixed Rate		3.895%
Maturity	01/2013
Interest Rate Swap 2 [Member]
Note 5 - Derivative Instruments and Fair Value Measurements (Details) - Interest Rate Swaps [Line Items]
Notional Amount Outstanding		$ 84,800,000
Fixed Rate		3.90%
Maturity	09/2013