Other Identifiable Intangible Assets (Details) - USD ($)		1 Months Ended	3 Months Ended		9 Months Ended		12 Months Ended
	Nov. 29, 2012	May 31, 2016	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2007
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets			$ 382,000	$ 377,000	$ 1,148,000	$ 1,133,000
Customer List [Member]
Finite-Lived Intangible Assets [Line Items]
Acquisition purchase price		$ 60,000,000
Intangible asset amortization period		10 years
Amortization of intangible assets over five years					1,700,000
Gross intangible assets		$ 3,400,000	3,400,000		3,400,000
Accumulated amortization			823,000		823,000
Amortization of intangible assets					340,000
Customer List [Member] | Stored Value Solutions Division Of Marshall Bank First [Member]
Finite-Lived Intangible Assets [Line Items]
Acquisition purchase price							$ 12,000,000
Intangible asset amortization period							12 years
Amortization of intangible assets per year							$ 1,000,000
Amortization of intangible assets over remainder of amortization period							$ 1,300,000
Gross intangible assets			12,000,000		12,000,000
Accumulated amortization			10,700,000		10,700,000
Software [Member]
Finite-Lived Intangible Assets [Line Items]
Acquisition date	Nov. 29, 2012
Acquisition purchase price	$ 1,800,000
Intangible asset amortization period	8 years
Amortization of intangible assets per year	$ 217,000
Amortization of intangible assets over five years	$ 396,000
Gross intangible assets			1,800,000		1,800,000
Accumulated amortization			$ 1,400,000		$ 1,400,000