Income Taxes - Narrative (Details) - USD ($)	3 Months Ended	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Income Tax Disclosure
Unrecognized Tax Benefits, Period Increase (Decrease)	$ 0		$ 0
Federal business tax credits		$ 800,000
Alternative Minimum Tax Credits		1,700,000
Deferred Tax Assets, Tax Credit Carryforwards, Alternative Minimum Tax, Refundable		800,000
Deferred tax assets		69,535,000	62,896,000
Deferred Tax Assets, Net of Valuation Allowance		50,200,000
Valuation allowance	(1,613,000)	(52,019,000)	(1,896,000)	$ (1,613,000)
Valuation allowance		50,123,000	283,000	$ (14,000)
Valuation allowance increase (decrease)		$ 50,100,000	300,000
Unrecognized tax benefits			0
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued			0
Income tax penalties and interest expense on unrecognized tax benefits	$ 0		$ 0
Statutory tax rate		21.00%	28.00%	35.00%
Tax Cuts and Jobs Act, Incomplete Accounting, Provisional Income Tax Expense (Benefit)		$ 18,000,000
Federal
Income Tax Disclosure
Operating loss carryforwards		146,800,000
State and Local Jurisdiction
Income Tax Disclosure
Operating loss carryforwards		$ 113,400,000