Stock Based Compensation (Restricted Stock and Restricted Stock Units Activity) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2012
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Outstanding at end of period (shares)	4,502,000
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Outstanding at beginning of period (shares)	269,000	323,000	382,000
Granted (shares)	88,000	121,000	106,000
Vested (shares)	(94,000)	(172,000)	(165,000)
Forfeited (shares)	(1,000)	(3,000)	0
Outstanding at end of period (shares)	262,000	269,000	323,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Weighted-Average Grant Date Fair Value, Outstanding at beginning of period	$ 9.02	$ 8.41	$ 7.84
Weighted- Average Grant-Date Fair Value, Granted	$ 11.62	$ 9.14	$ 9.42
Weighted Average Grant Date Fair Value, Vested	$ 8.94	$ 7.94	$ 7.73
Weighted-Average Grant Date Fair Value, Forfeited	$ 10.64	$ 10.64	$ 10.64
Weighted-Average Grant Date Fair Value, Outstanding at end of period	$ 9.91	$ 9.02	$ 8.41
Aggregate Intrinsic Value, Vested	$ 1,096	$ 1,612	$ 1,563
Aggregate Intrinsic Value, Outstanding at September 30, 2014	$ 3,594