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Investments - Carrying Value (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Jun. 30, 2015
Mutual Funds - Corporate & Government Debt
Available-for-sale securities	$ 12,807	$ 17,227
Time Deposits
Held-to-maturity securities, 1-90 days	2,243	1,496
Held-to-maturity securities, 91-360 days	1,699	4,438
Held-to-maturity securities, over 360 days	1,048	4,990
Fixed Income Bonds
Held-to-maturity securities, remaining maturities less than 1 year	353
Held-to-maturity securities, remaining maturities from 1-3 years	3,160	2,073
Held-to-maturity securities, remaining maturities from 3-5 years		1,453
Held-to-maturity securities	8,503	14,450
Short-term Investments
Fixed Income Bonds
Available-for-sale securities and held-to-maturity securities	17,102	23,161
Long Term Investments
Fixed Income Bonds
Held-to-maturity securities	4,208	8,516
Mutual Funds - Corporate & Government Debt
Mutual Funds - Corporate & Government Debt
Available-for-sale securities	12,807	17,227
Mutual Funds - Corporate & Government Debt | Short-term Investments
Mutual Funds - Corporate & Government Debt
Available-for-sale securities	12,807	17,227
Time Deposits
Fixed Income Bonds
Held-to-maturity securities	4,990	10,924
Time Deposits | Short-term Investments
Time Deposits
Held-to-maturity securities, 1-90 days	2,243	1,496
Held-to-maturity securities, 91-360 days	1,699	4,438
Time Deposits | Long Term Investments
Time Deposits
Held-to-maturity securities, over 360 days	1,048	4,990
Fixed Income Bonds
Fixed Income Bonds
Held-to-maturity securities	3,513	3,526
Fixed Income Bonds | Short-term Investments
Fixed Income Bonds
Held-to-maturity securities, remaining maturities less than 1 year	353
Fixed Income Bonds | Long Term Investments
Fixed Income Bonds
Held-to-maturity securities, remaining maturities from 1-3 years	$ 3,160	2,073
Held-to-maturity securities, remaining maturities from 3-5 years		$ 1,453

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