Investments (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2013
Investments, Debt and Equity Securities [Abstract]
Total (losses) gains recognized from trading securities held for investment	$ (270)	$ 464	$ 230
Less: Realized gains from sales of trading securities held for investment	89	116	499
Unrealized (losses) gains from trading securities held for investment	$ (359)	$ 348	$ (269)