Income Taxes - Narrative (Details) - USD ($)	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Operating loss carryforwards disclosures
Tax charge due to change in business strategy related to foreign subsidiaries		$ 2,800,000
Reduction in valuation allowance amount	$ 800,000
Amount of future tax benefits	5,000,000
Undistributed earnings of foreign subsidiaries	99,100,000
Foreign earnings repatriated	11,500,000
Income tax benefit associated with repatriation of foreign subsidiaries	900,000
Unrecognized tax benefits	0	$ 0	$ 0
State
Operating loss carryforwards disclosures
Net operating loss carryforwards expiring between 2018 and 2036	$ 361,800,000