Note 12 - Derivative Financial Instruments (Detail) - Fair Value of Derivative Instruments in Consolidated Balance Sheets (Designated as Hedging Instrument [Member], USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Interest rate swap contracts	$ 4,679	$ 7,530
Accrued Liabilities [Member]
Interest rate swap contracts	1,839	3,522
Other Long-term Liabilities [Member]
Interest rate swap contracts	$ 2,840	$ 4,008