Stock-Based Compensation (Summarized Stock Option Activity) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Stock-Based Compensation [Abstract]
Outstanding, Number of shares, Beginning Balance	2,077,524	2,401,169	2,401,169
Exercised, Number of shares		(323,645)
Expired unexercised, Number of shares	(474,443)
Outstanding, Number of shares, Ending Balance	1,603,081	2,077,524	2,077,524	2,401,169
Exercisable, Number of Shares	1,448,278
Vested and expecting to vest, Number of shares	1,603,081
Outstanding, Weighted average exercise price, Beginning Balance	$ 15.92	$ 15.34	$ 15.34
Exercised, Weighted average exercise price		11.62
Expired unexercised, Weighted average exercise price	22.51
Outstanding, Weighted average exercise price, Ending Balance	13.98	$ 15.92	$ 15.92	$ 15.34
Exercisable, Weighted average exercise price	14.28
Vested and expecting to vest, Weighted average exercise price	$ 13.98
Outstanding, Weighted average remaining contractual term (in years)	4 years 6 months	4 years 3 months 29 days	3 years 7 months 24 days	4 years 8 months 27 days
Exercisable, Weighted Average Remaining Contractual Term (in years)	4 years 1 month 10 days
Vested and expecting to vest, Weighted Average Remaining Contractual Term (in years)	4 years 6 months
Outstanding, Aggregate Intrinsic Value, Beginning Balance	$ 926	$ 11,516	$ 11,516
Exercised, Aggregate Intrinsic Value		2,669
Outstanding, Aggregate Intrinsic Value, Ending Balance	452	$ 7,509	$ 926	$ 11,516
Exercisable, Aggregate Intrinsic Value	452
Vested and expecting to vest, Aggregate Intrinsic Value	$ 452
Options exercise price range, lower limit	$ 7.35
Options exercise price range, upper limit	$ 24.46