Net Income (Loss) Per Share (Basic and Diluted Net Income (Loss) per Share) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Earnings Per Share [Abstract]
Net income (loss) attributable to Concur	$ (12,032)	$ (868)
Weighted Average Number of Shares Outstanding Reconciliation [Abstract]
Basic	55,082	54,096
Diluted	55,082	54,096
Earnings Per Share, Basic and Diluted [Abstract]
Basic, in Dollars per Share	$ (0.22)	$ (0.02)
Diluted, in Dollars per Share	$ (0.22)	$ (0.02)