Stock-Based Compensation (Schedule Of Stock Option Plans) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	6 Months Ended	12 Months Ended
	Dec. 31, 2015	Jun. 30, 2015	Jun. 30, 2014
Stock-Based Compensation [Abstract]
Shares, Outstanding and exercisable	457	524
Shares, Granted	26	49
Shares, Exercised	(105)	(110)
Shares, Canceled	(6)	(6)
Shares, Outstanding and exercisable	372	457
Weighted Average Exercise Price, Oustanding and exercisable	$ 17.02	$ 15.39
Weighted Average Exercise Price, Granted	43.09	31.48
Weighted Average Exercise Price, Exercised	13.53	15.52
Weighted Average Exercise Price, Canceled	22.32	16.98
Weighted Average Exercise Price, Oustanding and exercisable	$ 19.73	$ 17.02
Aggregate Intrinsic Value	$ 9,107	$ 11,916	$ 9,403