Goodwill and Intangible Assets - Schedule of Finite-Lived Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013
Finite-Lived Intangible Assets [Line Items]
Cost	$ 2,707	$ 2,707
Accumulated Amortization	1,147	823
Loss on Impairment of Intangible Assets
Net Book Value	1,560us-gaap_FiniteLivedIntangibleAssetsNet	1,884us-gaap_FiniteLivedIntangibleAssetsNet
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Cost	2,690	2,690
Accumulated Amortization	1,137	816
Loss on Impairment of Intangible Assets
Net Book Value	1,553	1,874
Trade Name [Member]
Finite-Lived Intangible Assets [Line Items]
Cost	17	17
Accumulated Amortization	10	7
Loss on Impairment of Intangible Assets
Net Book Value	$ 7	$ 10