Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Jun. 30, 2015
Income Taxes
Income tax expense	$ 17,055	$ 19,800
Effective income tax rate (as a percent)	33.90%	36.20%
Unrecognized tax benefits	$ 578		$ 578
Unrecognized tax benefits cumulative interest and penalties recorded	$ 0		$ 0