Income Taxes - Narrative (Details) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017	Jun. 30, 2018	Jun. 30, 2017
Income Tax Disclosure
Income Tax Expense (Benefit), Continuing Operations, Adjustment of Deferred Tax (Asset) Liability	$ 500,000		$ 20,800,000
Effective tax rate percent	(8.20%)	44.40%	(649.10%)	40.40%
Deferred income taxes	$ 45,779,000		$ 45,779,000			$ 63,055,000
Decrease to deferred tax assets			17,300,000
Unrecognized tax benefits	0		0			$ 0
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost	$ 1,600,000		$ 1,600,000
Scenario, Forecast [Member]
Income Tax Disclosure
Statutory tax rate					28.10%