Note 14 - Insurance Recoveries (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended						3 Months Ended	12 Months Ended		1 Months Ended	12 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2013 Steam Drum Failure at Foley Plant [Member]	Jun. 30, 2012 Steam Drum Failure at Foley Plant [Member]	Jul. 31, 2012 Steam Drum Failure at Foley Plant [Member]	Jun. 30, 2012 Power Surge at Foley Plant [Member]	Jun. 30, 2011 Power Surge at Foley Plant [Member]	Jun. 30, 2011 Insulation Failure at Foley Plant [Member]	Jul. 31, 2012 Steam Drum Failure at Foley Plant [Member]	Jun. 30, 2013 Steam Drum Failure at Foley Plant [Member]
Note 14 - Insurance Recoveries (Details) [Line Items]
Proceeds From Insurance Settlement Total										$ 18,923
Insurance Deductible Amount						2,000		2,000
Proceeds from Insurance Settlement, Operating Activities				10,662	3,984		1,701	3,719	353
Other Operating Income	4,351	32	63								4,277
Supplementary Insurance Information, Benefits, Claims, Losses and Settlement Expense							3,701
Loss due to power failure								$ 5,719	$ 2,353