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Special Charges (Narrative) (Details) (USD $)
3 Months Ended 9 Months Ended
Mar. 31, 2012
Mar. 31, 2011
Mar. 31, 2012
Mar. 31, 2011
Restructuring Cost and Reserve [Line Items]        
Acquisition-related costs $ 1,439,000 $ 1,248,000 $ 3,335,000 $ 2,376,000
Impairment charges and other impacts 0 0 1,345,000 0
Special Charges [Member]
       
Restructuring Cost and Reserve [Line Items]        
Acquisition-related costs 0   1,100,000  
Acquisition-integration related costs 1,400,000   2,200,000  
Recovery ARO [Member]
       
Restructuring Cost and Reserve [Line Items]        
Impairment charges and other impacts     800,000  
Recovery Sublease [Member]
       
Restructuring Cost and Reserve [Line Items]        
Impairment charges and other impacts     500,000  
Write-off of Debt Issuance Costs [Member]
       
Restructuring Cost and Reserve [Line Items]        
Impairment charges and other impacts     2,700,000  
Fiscal 2012 Restructuring Plan [Member]
       
Restructuring Cost and Reserve [Line Items]        
Expected restructuring charges     16,000,000  
Special charges recorded to date     12,900,000  
Fiscal 2011 Restructuring Plan [Member]
       
Restructuring Cost and Reserve [Line Items]        
Special charges recorded to date     9,700,000  
Fiscal 2010 Restructuring Plan [Member]
       
Restructuring Cost and Reserve [Line Items]        
Special charges recorded to date     $ 41,600,000