Note 3 - Derivatives (Detail) - Effect of our derivative financial instruments on consolidated statements of operations (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Interest rate swap agreements:
Liability	$ 0	$ 0	$ (6,344)
Effective portion of losses recognized in other comprehensive loss	0	0	(5,936)
Effective portion of gains recorded in accumulated other comprehensive loss and reclassified into interest expense	0	0	12,280
Liability	$ 0	$ 0	$ 0