Note 13 - Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2012

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

Fair Value at December 31, 2012	Level 1		Level 2			Level 3
Measured on a recurring basis:
Derivative contracts, net	$	-	$	(4,679	)	$	-

Fair Value at December 31, 2011	Level 1		Level 2			Level 3
Measured on a recurring basis:
Derivative contracts, net	$	-	$	(7,530	)	$	-
Measured on a non-recurring basis:
Long-lived assets held and used:
Certain buildings and improvements	$	-	$	-		$	2,500

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

	December 31, 2012		December 31, 2011
Carrying value	$	130,469	$	64,463
Fair value		134,688		73,551