Note 15 - Contingencies (Detail)	12 Months Ended						48 Months Ended	84 Months Ended	60 Months Ended
	Dec. 31, 2011 USD ($)	Dec. 31, 2011 BRL	Dec. 31, 2010 USD ($)	Dec. 31, 2010 BRL	Dec. 31, 2009 USD ($)	Dec. 31, 2009 BRL	Dec. 31, 2008 BRL	Dec. 31, 2011 USD ($)	Jun. 30, 2016 Minimum [Member] USD ($)	Jun. 30, 2016 Maximum [Member] USD ($)
Capital Expenditures Incurred but Not yet Paid									$ 40,000,000	$ 60,000,000
Income Tax Examination, Penalties and Interest Expense (in Brazil)	$ 882	1,654,000	$ 419	783,000	$ 413,000	774,000	2,471,000	$ 1,317,000