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Note 11 - Income Taxes and Deferred Tax Asset/Liability (Detail) - The income tax expense in the accompanying condensed consolidated financial statements consists of the following: (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Current tax expense (benefit)	$ 588	$ 1,639	$ 6,410
Deferred tax expense (benefit)	(1,167)	(18,651)	3,860
Total tax expense (benefit)	$ (579)	$ (17,012)	$ 10,270