Significant Accounting Policies Recently Issued Accounting Pronouncements (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Mar. 31, 2018	Mar. 31, 2018	Mar. 31, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Excess Tax Benefit from Share-based Compensation, Operating Activities		$ 0	$ 2,344
Excess Tax Benefit from Share-based Compensation, Financing Activities		0	$ 2,344
Accounting Standards Update 2016-09 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Increase (Decrease) in Income Taxes	$ (1,200)	$ (2,100)
Change in Effective Income Tax Rate Due to Excess Tax Benefits Recognized from Share-Based Compensation	(2.00%)	(1.00%)
Excess Tax Benefit from Share-based Compensation, Operating Activities		$ 2,100