Note 17. Accumulated Other Comprehensive Income (Loss) - Reclassification from Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands		12 Months Ended
		Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2013
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Amortization of prior service cost		$ (185)	$ (286)	$ (286)
Amortization of actuarial (gain) loss		292	(338)	$ (344)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax		1,256	(1,337)
Cost of Sales
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Amortization of prior service cost	[1]	(111)	(158)
Amortization of actuarial (gain) loss	[1]	159	(194)
Selling, General and Administrative Expenses
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Amortization of prior service cost	[1]	(61)	(86)
Amortization of actuarial (gain) loss	[1]	120	(91)
Provision (Benefit) for Income Taxes
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Amortization of prior service cost		68	95
Amortization of actuarial (gain) loss		(111)	111
Net Income (Loss)
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Amortization of prior service cost		(104)	(149)
Amortization of actuarial (gain) loss		168	(174)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax		1,256	1,337
Income (Loss) from Discontinued Operations
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Derivative Gain (Loss)	[2]	1,193	(961)
Amortization of prior service cost		(8)	(23)
Amortization of actuarial (gain) loss		7	(30)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax		1,192	(1,014)
Income (Loss) from Continuing Operations
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax		$ 64	$ (323)

[1] See Note 7 - Employee Benefit Plans of Notes to Consolidated Financial Statements for further information on postemployment benefit plans.

[2] See Note 12 - Derivative Instruments of Notes to Consolidated Financial Statements for further information on derivative instruments.