Income Taxes - Narrative (Details) - Subsidiary	3 Months Ended		9 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
Income Tax Disclosure [Abstract]
Number of subsidiaries filing income tax returns in the U.S. federal jurisdiction, and various state jurisdictions	1		1
Effective tax rate	(0.70%)	11.10%	(0.70%)	4.50%