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Segment Data Segment Data - Sales by End Market (Details)
 12 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2013
Revenue from External Customer [Line Items]      
Sales by End Market 100.00% 100.00% 100.00%
General Engineering [Member]      
Revenue from External Customer [Line Items]      
Sales by End Market 36.00% 31.00% 29.00%
Transportation [Member]      
Revenue from External Customer [Line Items]      
Sales by End Market 21.00% 21.00% 21.00%
Energy [Member]      
Revenue from External Customer [Line Items]      
Sales by End Market 19.00% 23.00% 23.00%
Earthworks [Member]      
Revenue from External Customer [Line Items]      
Sales by End Market 17.00% 19.00% 20.00%
Aerospace and Defense [Member]      
Revenue from External Customer [Line Items]      
Sales by End Market 7.00% 6.00% 7.00%