Share-based Compensation (Narrative) (Details) (USD $)	12 Months Ended
	Sep. 30, 2013 Y
Share-based Compensation 1	800,000
Share-based Compensation 2	1,600,000
Share-based Compensation 3	400,000
Share-based Compensation 4	$ 31.25
Share-based Compensation 5	6
Share-based Compensation 6	40,000
Share-based Compensation 7	280,000
Share-based Compensation 8	80,000
Share-based Compensation 9	300,300
Share-based Compensation 10	$ 16.34
Share-based Compensation 11	$ 10.75
Share-based Compensation 12	72,000
Share-based Compensation 13	$ 21.5
Share-based Compensation 14	5
Share-based Compensation 15	$ 17.95
Share-based Compensation 16	216,000
Share-based Compensation 17	34,000
Share-based Compensation 18	$ 20.9
Share-based Compensation 19	5
Share-based Compensation 20	$ 11.80
Share-based Compensation 21	$ 16,525
Share-based Compensation 22	0
Share-based Compensation 23	385,640
Share-based Compensation 24	$ 14.05
Share-based Compensation 25	7
Share-based Compensation 26	2.32
Share-based Compensation 27	$ 14.05
Share-based Compensation 28	$ 12.30
Share-based Compensation 29	516,854
Share-based Compensation 30	259,207
Share-based Compensation 31	65,148
Share-based Compensation 32	1
Share-based Compensation 33	20,000
Share-based Compensation 34	$ 12.15
Share-based Compensation 35	7.5
Share-based Compensation 36	2.32
Share-based Compensation 37	$ 12.15
Share-based Compensation 38	$ 7.05
Share-based Compensation 39	35,445
Share-based Compensation 40	8,703
Share-based Compensation 41	100,000
Share-based Compensation 42	$ 14.05
Share-based Compensation 43	175,524
Share-based Compensation 44	91,096
Share-based Compensation 45	$ 23,600
Share-based Compensation 46	1