Goodwill and Other Intangible Assets - Total Intangible Assets (Detail) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013
Goodwill [Line Items]
Intangible Assets, Gross	$ 3,836	$ 4,066
Non-amortizable goodwill, Gross	10,853	11,185
Total Intangible assets, Gross	14,689	15,251
Intangible Assets, Accumulated Amortization	190	162
Intangible Assets, Net	2,596	3,420
Non-amortizable goodwill, Net	10,853	11,185	$ 7,576
Total Intangible assets, Net	$ 13,449	$ 14,605
Loan Origination Fees [Member]
Goodwill [Line Items]
Finite-Lived Intangible Asset, Useful Life	3 years	3 years
Intangible Assets, Gross	$ 302	$ 199
Intangible Assets, Accumulated Amortization	190	162
Intangible Assets, Net	$ 112	$ 37
Customer Relationships [Member]
Goodwill [Line Items]
Finite-Lived Intangible Asset, Useful Life	10 years	10 years
Intangible Assets, Gross	$ 2,329	$ 2,662
Intangible Assets, Accumulated Amortization	457	191
Intangible Assets, Net	$ 1,872	$ 2,471
Software Development Costs [Member]
Goodwill [Line Items]
Finite-Lived Intangible Asset, Useful Life	3 years	3 years
Intangible Assets, Gross	$ 533	$ 533
Intangible Assets, Accumulated Amortization	429	252
Intangible Assets, Net	$ 104	$ 281
Product Rights [Member]
Goodwill [Line Items]
Finite-Lived Intangible Asset, Useful Life	6 years	6 years
Intangible Assets, Gross	$ 672	$ 672
Intangible Assets, Accumulated Amortization	164	41
Intangible Assets, Net	$ 508	$ 631