Note 8 - Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2014

Fair Value Disclosures [Abstract]

Fair Value Measurements, Recurring and Nonrecurring [Table Text Block]

Fair Value at March 31, 2014	Level 1		Level 2			Level 3
Measured on a recurring basis:
Derivative contracts, net	$	-	$	(2,623	)	$	-

Fair Value at December 31, 2013	Level 1		Level 2			Level 3
Measured on a recurring basis:
Derivative contracts, net	$	-	$	(2,900	)	$	-

Schedule of Carrying Values and Estimated Fair Values of Debt Instruments [Table Text Block]

	March 31, 2014		December 31, 2013
Carrying value	$	134,292	$	132,616
Fair value		126,273		126,786