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Investments - Carrying Value (Details) - USD ($) $ in Thousands | Dec. 31, 2015 | Jun. 30, 2015
--- | --- | ---
Schedule of Held-to-maturity Securities [Line Items] |  |
Mutual Funds Carrying Value | $ 12,703 | $ 17,227
Available-for-sale securities, current | 12,703 | 17,227
Held-to-maturity securities, maturities from 1-90 days | 1,753 | 1,496
Held-to-maturity securities, maturities from 91-360 days | 3,736 | 4,438
Held-to-maturity securities, maturities over 360 days | 2,248 | 4,990
Held-to-maturity securities, remaining maturities from 1-3 years | 2,800 | 2,073
Held-to-maturity securities, remaining maturities from 3-5 years | 720 | 1,453
Held-to-maturity securities | 11,257 | 14,450
Short-Term Investments |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Total available-for-sale and held-to-maturity securities | 18,192 | 23,161
Long-Term Investments |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Held-to-maturity securities | 5,768 | 8,516
Mutual Funds - Corporate & Government Debt |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Mutual Funds Carrying Value | 12,703 |
Available-for-sale securities, current | 12,703 | 17,227
Time Deposits |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Held-to-maturity securities | 7,737 | 10,924
Time Deposits | Short-Term Investments |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Held-to-maturity securities, maturities from 1-90 days | 1,753 | 1,496
Held-to-maturity securities, maturities from 91-360 days | 3,736 | 4,438
Time Deposits | Long-Term Investments |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Held-to-maturity securities, maturities over 360 days | 2,248 | 4,990
Fixed Income Bonds |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Held-to-maturity securities | 3,520 | 3,526
Fixed Income Bonds | Long-Term Investments |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Held-to-maturity securities, remaining maturities from 1-3 years | 2,800 | 2,073
Held-to-maturity securities, remaining maturities from 3-5 years | $ 720 | $ 1,453

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