Note 7. Restructuring Expense Restructuring Plan (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Mar. 31, 2015		Jun. 30, 2014
Restructuring Expense and Other Related Items
Restructuring Reserve	$ 2,006	[1]	$ 0
Restructuring and Related Cost, Cost Incurred to Date	3,723
Restructuring and Related Cost, Expected Cost	9,925
Payments for Restructuring	2,793
Restructuring Reserve, Settled without Cash	930
Restructuring Reserve, Period Increase (Decrease)	(1,717)
FY 2015 Post Falls Restructuring Plan [Domain]
Restructuring Expense and Other Related Items
Restructuring Reserve	2,006		0
Restructuring and Related Cost, Cost Incurred to Date	2,677
Restructuring and Related Cost, Expected Cost	8,879
Payments for Restructuring	2,569
Restructuring Reserve, Settled without Cash	108
Restructuring Reserve, Period Increase (Decrease)	(671)
FY 2015 Plane Fleet Reduction [Domain]
Restructuring Expense and Other Related Items
Restructuring Reserve	0		0
Restructuring and Related Cost, Cost Incurred to Date	1,046
Restructuring and Related Cost, Expected Cost	1,046
Payments for Restructuring	224
Restructuring Reserve, Settled without Cash	822
Restructuring Reserve, Period Increase (Decrease)	(1,046)
Transition and Other Employee Costs
Restructuring Expense and Other Related Items
Restructuring and Related Cost, Expected Cost	5,600
Transition and Other Employee Costs | FY 2015 Post Falls Restructuring Plan [Domain]
Restructuring Expense and Other Related Items
Restructuring Reserve	2,006		0
Restructuring and Related Cost, Cost Incurred to Date	2,006
Restructuring and Related Cost, Expected Cost	5,432
Payments for Restructuring	2,006
Restructuring Reserve, Settled without Cash	0
Restructuring Reserve, Period Increase (Decrease)
Transition and Other Employee Costs | FY 2015 Plane Fleet Reduction [Domain]
Restructuring Expense and Other Related Items
Restructuring Reserve	0		0
Restructuring and Related Cost, Cost Incurred to Date	224
Restructuring and Related Cost, Expected Cost	224
Payments for Restructuring	224
Restructuring Reserve, Settled without Cash	0
Restructuring Reserve, Period Increase (Decrease)	(224)
Asset Write-Downs
Restructuring Expense and Other Related Items
Restructuring and Related Cost, Expected Cost	1,200
Asset Write-Downs | FY 2015 Post Falls Restructuring Plan [Domain]
Restructuring Expense and Other Related Items
Restructuring Reserve	0		0
Restructuring and Related Cost, Cost Incurred to Date	108
Restructuring and Related Cost, Expected Cost	334
Payments for Restructuring	0
Restructuring Reserve, Settled without Cash	108
Restructuring Reserve, Period Increase (Decrease)	(108)
Asset Write-Downs | FY 2015 Plane Fleet Reduction [Domain]
Restructuring Expense and Other Related Items
Restructuring Reserve	0		0
Restructuring and Related Cost, Cost Incurred to Date	822
Restructuring and Related Cost, Expected Cost	822
Payments for Restructuring	0
Restructuring Reserve, Settled without Cash	822
Restructuring Reserve, Period Increase (Decrease)	(822)
Plant Closure and Other Exit Costs
Restructuring Expense and Other Related Items
Restructuring and Related Cost, Expected Cost	3,100
Plant Closure and Other Exit Costs | FY 2015 Post Falls Restructuring Plan [Domain]
Restructuring Expense and Other Related Items
Restructuring Reserve	0		0
Restructuring and Related Cost, Cost Incurred to Date	563
Restructuring and Related Cost, Expected Cost	3,113
Payments for Restructuring	563
Restructuring Reserve, Settled without Cash	0
Restructuring Reserve, Period Increase (Decrease)	(563)
Other Current Liabilities
Restructuring Expense and Other Related Items
Restructuring Reserve	500
Other Noncurrent Liabilities
Restructuring Expense and Other Related Items
Restructuring Reserve	$ 1,500

[1] The accrued restructuring balance at March 31, 2015 includes $0.5 million recorded in current liabilities and $1.5 million recorded in other long-term liabilities.