Stock-based Compensation (Schedule of SAR Activity) (Details) (SARS, USD $) In Thousands, except Per Share data, unless otherwise specified	6 Months Ended
	Mar. 31, 2015
SARS
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Outstanding at September 30, 2014	747
Granted	682
Exercised	(34)
Cancelled/Expired	(24)
Outstanding at March 31, 2015	1,371
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]
Outstanding at September 30, 2014	$ 10.96
Granted	$ 13.55
Exercised	$ 10.96
Cancelled/Expired	$ 12.13
Outstanding at March 31, 2015	$ 12.23
Aggregate Intrinsic Value, exercised	$ 177
Weighted-Average Remaining Contractual Term in Years, Outstanding at March 31, 2015 (years)	6 years 1 month 2 days
Aggregate Intrinsic Value, Outstanding at March 31, 2015	7,766
Number of Shares, Exercisable at March 31, 2015 (shares)	211
Weighted-Average Exercise Price, Exercisable at March 31, 2015	$ 10.96
Weighted-Average Remaining Contractual Term in Years, Exercisable at March 31, 2015 (years)	5 years 7 months 10 days
Aggregate Intrinsic Value, Exercisable at March 31, 2015	$ 1,460