Other Comprehensive Loss (Details) $ in Thousands	9 Months Ended
	Mar. 31, 2017 USD ($)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance, beginning of period	$ 28,627
Balance, end of period	19,450
Unrealized Loss in Mutual Fund Investments
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Current period change in other comprehensive loss before reclassifications	(21)
Reclassification to net loss for realized losses	60
Balance, end of period	$ (62)