Note 12 - Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2015

Notes Tables

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

Fair Value at December 31, 2015	Level 1		Level 2		Level 3
Measured on a recurring basis:
Derivative contract, net	$	—	$	532	$	—
Measured on a non-recurring basis:
Equity-method investment	$	—	$	—	$	22,284
Long-lived assets held and used:
Certain buildings and improvements		—		—		6,559

Fair Value at December 31, 2014	Level 1		Level 2		Level 3
Measured on a recurring basis:
Derivative contract, net	$	—	$	1,750	$	—
Measured on a non-recurring basis:
Equity-method investment	$	—	$	—	$	33,282

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

December 31,	2015		2014
Carrying value	$	297,463	$	257,780
Fair value		296,961		270,781