Income Taxes - Reconciliation of the Reserve For Uncertain Tax Positions (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Reconciliation of the reserve for uncertain tax positions
Uncertain tax positions, beginning of year	$ 23,535	$ 19,870	$ 21,193
Gross (decreases) increases - tax positions in prior period	(19,116)	67	238
Gross increases—tax positions in current period	0	5,474	0
Gross decreases—lapse of statutes	(830)	(1,772)	(1,024)
Currency translation adjustment	332	(104)	(537)
Uncertain tax positions, end of year	$ 3,921	$ 23,535	$ 19,870