Stock Options (Details) - Employee Stock Option [Member] - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding, period start, number of shares	72	50	100
Granted, number of shares	0	32	0
Forfeited, number of shares	0	0	0
Exercised, number of shares	(20)	(10)	(50)
Outstanding, period end, number of shares	52	72	50
Outstanding, period start, weighted average exercise price	$ 50.04	$ 22.14	$ 23.07
Granted, weighted average exercise price	0.00	87.27	0.00
Forfeited, weighted average exercise price	0.00	0.00	0.00
Exercised, weighted average exercise price	17.45	28.52	23.99
Outstanding, period end, weighted average exercise price	$ 62.65	$ 50.04	$ 22.14
Outstanding, period end, intrinsic value	$ 3,500
Vested and Expected to Vest, period end, number of shares	52
Vested and Expected to Vest, period end, weighted average exercise price	$ 62.65
Vested and Expected to Vest, period end, intrinsic value	$ 3,500
Exercisable, period end, number of shares	20
Exercisable, period end, weighted average exercise price	$ 23.65
Exercisable, period end, intrinsic value	$ 2,134