Discontinued Operations and Restructuring - Restructuring Costs (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2016	Mar. 31, 2015	Sep. 30, 2015
U.S. Financial Services | Other
Restructuring Cost and Reserve [Line Items]
Restructuring	$ 1,203	$ 4,025	$ 2,733	$ 4,025
U.S. Financial Services | Regulatory Compliance
Restructuring Cost and Reserve [Line Items]
Restructuring					$ 3,300
Fiscal 2015 Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring	218		1,910
Fiscal 2015 Restructuring | Other
Restructuring Cost and Reserve [Line Items]
Restructuring	218		768
Fiscal 2015 Restructuring | Asset disposals
Restructuring Cost and Reserve [Line Items]
Restructuring	0		323
Fiscal 2015 Restructuring | Lease termination costs
Restructuring Cost and Reserve [Line Items]
Restructuring	$ 0		$ 819