Investments - Summary of Investments Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Corporate debt [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	$ 250	$ 0
Return of capital	(25)	0
Total gains or losses (realized/unrealized)
Included in earnings (investment income)	(133)	0
Included in other comprehensive income (loss)	104	0
Purchases	0	250
Sales	0	0
Transfers into Level 3	343	0
Transfers out of Level 3	0	0
Ending Balance	539	250
Common Stock - International [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	0	95
Return of capital		0
Total gains or losses (realized/unrealized)
Included in earnings (investment income)		0
Included in other comprehensive income (loss)		5
Purchases		0
Sales		0
Transfers into Level 3		0
Transfers out of Level 3		(100)
Ending Balance		0
Other [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	$ 0	163
Return of capital		(43)
Total gains or losses (realized/unrealized)
Included in earnings (investment income)		0
Included in other comprehensive income (loss)		5
Purchases		160
Sales		0
Transfers into Level 3		0
Transfers out of Level 3		(285)
Ending Balance		$ 0