Other Comprehensive Loss (Details) $ in Thousands	3 Months Ended
	Sep. 30, 2017 USD ($)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Current period change in other comprehensive loss before reclassifications	$ 1
Reclassification to net loss for realized losses	1
Unrealized Loss in Investments
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance, beginning of period	(61)
Balance, end of period	$ (59)