Goodwill and Other Intangible Assets - Total Intangible Assets (Detail) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
Goodwill [Line Items]
Gross	$ 4,122	$ 3,836
Non-amortizable goodwill, Gross	11,310	10,853
Total Intangible assets, Gross	15,432	14,689
Accumulated Amortization	1,779	1,240
Intangible Assets, Net	2,343	2,596
Non-amortizable goodwill, Net	11,310	10,853	$ 11,185
Total Intangible assets, Net	$ 13,653	$ 13,449
Loan origination fees
Goodwill [Line Items]
Life (years)	3 years	3 years
Gross	$ 312	$ 302
Accumulated Amortization	236	190
Intangible Assets, Net	$ 76	$ 112
Customer relationships
Goodwill [Line Items]
Life (years)	10 years	10 years
Gross	$ 2,605	$ 2,329
Accumulated Amortization	723	457
Intangible Assets, Net	$ 1,882	$ 1,872
Software development costs
Goodwill [Line Items]
Life (years)	3 years	3 years
Gross	$ 533	$ 533
Accumulated Amortization	533	429
Intangible Assets, Net	$ 0	$ 104
Product rights
Goodwill [Line Items]
Life (years)	6 years	6 years
Gross	$ 672	$ 672
Accumulated Amortization	287	164
Intangible Assets, Net	$ 385	$ 508