Note 18 - Income Taxes (Details) - Difference Between US Federal Statutory Tax Rate and Company's Effective Tax Rate	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2011	Dec. 31, 2012 Revised [Member]
Note 18 - Income Taxes (Details) - Difference Between US Federal Statutory Tax Rate and Company's Effective Tax Rate [Line Items]
U.S. federal statutory tax rate	35.00%	35.00%	35.00%
Valuation allowance	(3.50%)	1424.60%	(8.00%)
State income tax, net of federal benefit	(0.20%)	(35.90%)	4.10%
Effect of foreign income tax, net	(7.90%)	(31.30%)	2.40%
Production tax credits	(1.90%)	(268.60%)	5.00%
Dividends from foreign subsidiaries			(39.30%)
Subpart F income	4.70%
Depletion		(18.70%)	0.30%
Other, net	0.30%	12.30%	(0.40%)
Effective tax rate	26.50%	1117.20%	0.90%