Stock-Based Compensation (Summarized Stock Option Activity) (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended	3 Months Ended		12 Months Ended
	Aug. 31, 2014	Sep. 30, 2015	Sep. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding, Number of shares, Beginning Balance		2,401,169	2,710,392	2,710,392
Exercised, Number of shares		(323,645)	(688,633)
Granted, Number of Shares of Restricted Stock	464,410
Forfeitures, Number of shares	0	0
Outstanding, Number of shares, Ending Balance		2,077,524	2,486,169	2,401,169	2,710,392
Exercisable, Number of Shares		1,764,931
Vested and expecting to vest, Number of shares		2,077,524
Outstanding, Weighted average exercise price, Beginning Balance		$ 15.34	$ 14.16	$ 14.16
Exercised, Weighted average exercise price		11.62	8.24
Granted under Plan, Weighted average exercise price	$ 11.23
Outstanding, Weighted average exercise price, Ending Balance		15.92	$ 15.24	$ 15.34	$ 14.16
Exercisable, Weighted average exercise price		16.93
Vested and expecting to vest, Weighted average exercise price		$ 15.92
Granted under Plan, Weighted Average Remaining Contractual Term (in years)	10 years
Options granted under plan, Weighted average remaining contractual term		4 years 3 months 29 days	5 years 5 months 12 days	4 years 8 months 27 days	5 years 4 months 17 days
Exercisable, Weighted Average Remaining Contractual Term (in years)		3 years 6 months 18 days
Vested and expecting to vest, Weighted Average Remaining Contractual Term (in years)		4 years 3 months 29 days
Outstanding, Aggregate Intrinsic Value, Beginning Balance		$ 11,516	$ 3,909	$ 3,909
Exercised, Aggregate Intrinsic Value		2,669	3,697
Granted under Plan, Aggregate Intrinsic Value	$ 2,113
Outstanding, Aggregate Intrinsic Value, Ending Balance		7,509	$ 1,820	$ 11,516	$ 3,909
Exercisable, Aggregate Intrinsic Value		5,496
Vested and expecting to vest, Aggregate Intrinsic Value		$ 7,509
Granted under Plan: August 2014, Weighted Average Grant Date Fair Value	$ 4.55
Options exercise price range, lower limit		$ 7.35
Options exercise price range, upper limit		24.46
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options exercise price range, lower limit		22.51
Options exercise price range, upper limit		$ 24.46