Share-Based Compensation Restricted stock units activity (Details) - Restricted Stock Units (RSUs) $ / shares in Units, shares in Thousands, $ in Millions	12 Months Ended
	Jun. 30, 2018 USD ($) $ / shares shares
Restricted units, outstanding [Roll Forward]
Non-vested, start of year (in shares) | shares	1,500
Granted (in shares) | shares	35
Vested/Exercised (in shares) | shares	0
Non-vested, end of year (in shares) | shares	1,535
Weighted average grant date fair value [Roll Forward]
Nonvested, weighted average grant date fair value, start of year (in USD per share) | $ / shares	$ 2.28
Grants in period, weighted average grant date fair value (in USD per share) | $ / shares	8.46
Vested/exercised, weighted average grant date fair value (in USD per share) | $ / shares	0.00
Nonvested, weighted average grant date fair value, end of year (in USD per share) | $ / shares	$ 2.83
Nonvested, compensation not yet recognized, RSU | $	$ 0.4
Nonvested, compensation not yet recognized, period	1 year 6 months 26 days