Note 1 - Business and Significant Accounting Policies (Details) - Effect of Revision on Line Items in Condensed Consolidated Statement of Cash Flow (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Cash flows from operating activities:
Net income (loss)	$ (4,949)	$ 42,031	$ (212,607)	$ (42,724)
Deferred income tax provision	3,720	10,458	(4,736)	38,061
Net cash provided by operating activities	18,216	86,760	89,471	132,734
Scenario, Previously Reported [Member]
Cash flows from operating activities:
Net income (loss)	(1,897)		(206,016)
Deferred income tax provision	668		(11,327)
Net cash provided by operating activities	18,216		89,471
Restatement Adjustment [Member]
Cash flows from operating activities:
Net income (loss)	(3,052)		(6,591)
Deferred income tax provision	$ 3,052		$ 6,591