GOODWILL AND IDENTIFIABLE INTANGIBLE ASSETS, Intangible Assets, by Type (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Sep. 30, 2015
Finite-Lived Intangible Assets [Line Items]
Gross carrying value	$ 94,063	$ 95,771
Accumulated amortization	(30,104)	(26,444)
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross carrying value	73,770	75,217
Accumulated amortization	(19,545)	(17,759)
Trade name
Finite-Lived Intangible Assets [Line Items]
Gross carrying value	3,928	4,278
Accumulated amortization	(267)	(111)
Developed technology
Finite-Lived Intangible Assets [Line Items]
Gross carrying value	12,630	12,630
Accumulated amortization	(9,017)	(7,754)
Intellectual property
Finite-Lived Intangible Assets [Line Items]
Gross carrying value	521	561
Accumulated amortization	(48)	(23)
Non-compete agreements
Finite-Lived Intangible Assets [Line Items]
Gross carrying value	987	1,018
Accumulated amortization	(453)	(206)
Mortgage servicing rights
Finite-Lived Intangible Assets [Line Items]
Gross carrying value	2,227	2,067
Accumulated amortization	$ (774)	$ (591)