Income Taxes - Narrative (Details)	12 Months Ended
	Jun. 30, 2017 USD ($) Subsidiary	Jun. 30, 2016 USD ($)	Jun. 30, 2015 USD ($)
Income Tax [Line Items]
Statutory federal income tax rate	34.00%	34.00%	34.00%
Deferred tax assets, valuation allowance	$ 11,200,000
Deferred income tax assets	27,100,000
Deferred tax assets, valuation allowance	27,150,000	$ 15,992,000	$ 16,689,000
Operating loss carryforward - Federal	58,000,000
Operating loss carryforward - State	$ 38,300,000
Number of subsidiaries filing income tax returns in the U.S. federal jurisdiction, and various state jurisdictions | Subsidiary	1
Unrecognized tax benefits that, if recognized, would affect the effective tax rate	$ 247,000
Interest, net of tax effect recognized	9,000	16,000	23,000
Interest paid, net of tax	$ 0	$ 0	$ 0
Federal
Income Tax [Line Items]
Operating loss carryforward expiration year	2035
State and Local Jurisdiction | Earliest Tax Year
Income Tax [Line Items]
Operating loss carryforward expiration year	2018
State and Local Jurisdiction | Latest Tax Year
Income Tax [Line Items]
Operating loss carryforward expiration year	2035