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Employee Benefit Plans (Details) (USD $)
3 Months Ended
Sep. 30, 2012
Apr. 01, 2012
November 2010 plan [Member]
Sep. 30, 2012
November 2000 Plan [Member]
Apr. 01, 2012
November 2000 Plan [Member]
Sep. 30, 2012
Plan adopted from acquisition [Member]
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]          
Participant balances percent vested 100.00%        
Deferred compensation plan obligations   $ 14,900,000 $ 15,400,000   $ 1,500,000
Deferred compensation plan assets     16,300,000 14,000,000 600,000
Multiemployer Plan, Period Contributions 100,000        
Defined Benefit Plan, Estimated Future Employer Contributions in Next Fiscal Year 400,000        
Postemployment Benefits Liability, Noncurrent 200,000        
Defined Benefit Plan, Benefit Obligation 700,000        
Defined Benefit Plan, Assets for Plan Benefits $ 1,000,000