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Fair Value Measurements - Recurring Basis (Details) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2011
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Liabilities, Fair Value Disclosure $ 352 $ 1,365 $ 873 $ 362
Fair Value, Measurements, Recurring
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Restricted Investments, at Fair Value 4,105 5,089    
Liabilities, Fair Value Disclosure 352 1,365    
Fair Value, Measurements, Recurring | Level 1
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Restricted Investments, at Fair Value 2,790 831    
Liabilities, Fair Value Disclosure 0 0    
Fair Value, Measurements, Recurring | Level 2
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Restricted Investments, at Fair Value 1,315 4,258    
Liabilities, Fair Value Disclosure 0 0    
Fair Value, Measurements, Recurring | Level 3
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Restricted Investments, at Fair Value 0 0    
Liabilities, Fair Value Disclosure 352 1,365    
Equity Funds | Fair Value, Measurements, Recurring
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Restricted Investments, at Fair Value 140 2,767    
Equity Funds | Fair Value, Measurements, Recurring | Level 1
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Restricted Investments, at Fair Value 140 0    
Equity Funds | Fair Value, Measurements, Recurring | Level 2
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Restricted Investments, at Fair Value 0 2,767    
Equity Funds | Fair Value, Measurements, Recurring | Level 3
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Restricted Investments, at Fair Value 0 0    
Certificates of Deposit | Fair Value, Measurements, Recurring
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Restricted Investments, at Fair Value 209 212    
Certificates of Deposit | Fair Value, Measurements, Recurring | Level 1
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Restricted Investments, at Fair Value 0 0    
Certificates of Deposit | Fair Value, Measurements, Recurring | Level 2
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Restricted Investments, at Fair Value 209 212    
Certificates of Deposit | Fair Value, Measurements, Recurring | Level 3
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Restricted Investments, at Fair Value 0 0    
Municipal Bonds | Fair Value, Measurements, Recurring
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Restricted Investments, at Fair Value 740 763    
Municipal Bonds | Fair Value, Measurements, Recurring | Level 1
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Restricted Investments, at Fair Value 0 0    
Municipal Bonds | Fair Value, Measurements, Recurring | Level 2
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Restricted Investments, at Fair Value 740 763    
Municipal Bonds | Fair Value, Measurements, Recurring | Level 3
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Restricted Investments, at Fair Value 0 0    
Corporate Debt Securities | Fair Value, Measurements, Recurring
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Restricted Investments, at Fair Value 236 344    
Corporate Debt Securities | Fair Value, Measurements, Recurring | Level 1
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Restricted Investments, at Fair Value 0 0    
Corporate Debt Securities | Fair Value, Measurements, Recurring | Level 2
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Restricted Investments, at Fair Value 236 344    
Corporate Debt Securities | Fair Value, Measurements, Recurring | Level 3
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Restricted Investments, at Fair Value 0 0    
Asset-backed Securities [Member] | Fair Value, Measurements, Recurring
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Restricted Investments, at Fair Value 130 172    
Asset-backed Securities [Member] | Fair Value, Measurements, Recurring | Level 1
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Restricted Investments, at Fair Value 0 0    
Asset-backed Securities [Member] | Fair Value, Measurements, Recurring | Level 2
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Restricted Investments, at Fair Value 130 172    
Asset-backed Securities [Member] | Fair Value, Measurements, Recurring | Level 3
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Restricted Investments, at Fair Value 0 0    
Money market accounts | Fair Value, Measurements, Recurring
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Restricted Investments, at Fair Value 2,650 831    
Money market accounts | Fair Value, Measurements, Recurring | Level 1
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Restricted Investments, at Fair Value 2,650 831    
Money market accounts | Fair Value, Measurements, Recurring | Level 2
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Restricted Investments, at Fair Value 0 0    
Money market accounts | Fair Value, Measurements, Recurring | Level 3
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Restricted Investments, at Fair Value 0 0    
Contingent Consideration | Fair Value, Measurements, Recurring
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Liabilities, Fair Value Disclosure 352 1,365    
Contingent Consideration | Fair Value, Measurements, Recurring | Level 1
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Liabilities, Fair Value Disclosure 0 0    
Contingent Consideration | Fair Value, Measurements, Recurring | Level 2
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Liabilities, Fair Value Disclosure 0 0    
Contingent Consideration | Fair Value, Measurements, Recurring | Level 3
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Liabilities, Fair Value Disclosure $ 352 $ 1,365