Note 9 - Financial Instruments and Fair Value (Detail) - Pre-tax Effect of Interest Rate Swaps (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Gain (loss) recognized in other comprehensive income (loss) on interest rate swaps	$ 317	$ (1,868)	$ (364)

Before tax amount of the change in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges. Also includes an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

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