Stock-Based Compensation (Changes in Restricted Stock Awards) (Details) (Restricted Stock Award [Member], USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended	6 Months Ended
	Mar. 31, 2014	Mar. 31, 2014
Restricted Stock Award [Member]
Number of shares, beginning balance	24	0
Weighted-Average Grant Date Fair Value Per Share, beginning balance	$ 39.43
Shares granted, Number of Shares	0	24
Shares granted, Weighted-Average Grant Date Fair Value Per Share		$ 39.43
Shares vested, Number of Shares	0	0
Shares forfeited, Number of Shares	0	0
Number of shares, ending balance	24	24
Weighted-Average Grant Date Fair Value Per Share, ending balance	$ 39.43	$ 39.43