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Long-Term Investments (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2013
Dec. 31, 2012
Jun. 30, 2013
Schedule of Investments [Line Items]          
Fair value inputs, discount rate     1.51%    
Fair value inputs, time period until redemption     3 years    
Fair value inputs, estimated rate of return     0.26%    
Fair value investment, increase or decrease in rate of return     1.00%    
Fair value investment, increase or decrease in term     1 year    
Auction Rate Securities [Member]
         
Schedule of Investments [Line Items]          
Auction-rate securities, net of unrealized losses $ 2,637   $ 2,637   $ 2,637
Change in fair value 0 27 0 27  
Auction rate security, gross unrealized holding loss 113   113   113
Accumulated unrealized income (loss), net of tax (68)   (68)   (68)
Auction rate securities, redeemed at par $ 0 $ 300 $ 0 $ 300  
Minimum [Member]
         
Schedule of Investments [Line Items]          
Fair value, change in investment portfolio     1.00%    
Maximum [Member]
         
Schedule of Investments [Line Items]          
Fair value, change in investment portfolio     3.00%