Legal Proceedings (Details) (USD $)	12 Months Ended			0 Months Ended	3 Months Ended	0 Months Ended	3 Months Ended
	Dec. 31, 2011 Wolfgeher Class Action Lawsuit [Member]	Dec. 31, 2013 Wolfgeher Class Action Lawsuit [Member] Minimum [Member]	Dec. 31, 2013 Wolfgeher Class Action Lawsuit [Member] Maximum [Member]	Jul. 13, 2012 Visa settlement [Member]	Sep. 30, 2013 Visa settlement [Member]	Jan. 04, 2013 Pending Litigation [Member]	Sep. 30, 2013 Pending Litigation [Member]
Loss Contingencies [Line Items]
Settlement Basis Point Reduction Credit Card Interchange					0.10%
Reserve established				$ 5,200,000			$ 1,000,000
Loss Contingency Accrual, Carrying Value, Payments					643,000
Loss Contingency Accrual, at Carrying Value					4,500,000
Estimated Reduction in Overdraft Income		3,500,000	5,500,000
Litigation Settlement, Expense	18,300,000
Loss Contingency, Damages Sought, Value						$ 9,000,000