Note 15 - Contingencies (Detail)	9 Months Ended	8 Months Ended	15 Months Ended			27 Months Ended	48 Months Ended	87 Months Ended	60 Months Ended
	Sep. 14, 2011 BRL	Sep. 03, 2010 BRL	Mar. 31, 2012 USD ($)	Mar. 31, 2012 BRL	Mar. 31, 2012 USD ($)	Mar. 31, 2012 USD ($)	Dec. 31, 2008 BRL	Mar. 31, 2012 USD ($)	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 Real)	783,000	774,000	$ 908,000	1,654,000	$ 430,000	$ 425,000	2,471,000	$ 1,356,000