Annual report pursuant to Section 13 and 15(d)

Leases - Additional Information (Detail)

v2.4.1.9
Leases - Additional Information (Detail) (USD $)
12 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Vehicles [Member]    
Lease Rental Expenses [Line Items]    
Rent expense $ 897,000us-gaap_OperatingLeasesRentExpenseNet
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_AssetsHeldUnderCapitalLeasesMember
$ 1,087,000us-gaap_OperatingLeasesRentExpenseNet
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_AssetsHeldUnderCapitalLeasesMember
Minimum initial terms of payments due under non-cancelable lease agreements 1 year  
Future minimum lease payments, total 1,019,000us-gaap_OperatingLeasesFutureMinimumPaymentsDue
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_AssetsHeldUnderCapitalLeasesMember
 
Future minimum lease payments on fiscal year 2015 415,000us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_AssetsHeldUnderCapitalLeasesMember
 
Future minimum lease payments on fiscal year 2016 323,000us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_AssetsHeldUnderCapitalLeasesMember
 
Future minimum lease payments on fiscal year 2017 164,000us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_AssetsHeldUnderCapitalLeasesMember
 
Future minimum lease payments on fiscal year 2018 90,000us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_AssetsHeldUnderCapitalLeasesMember
 
Future minimum lease payments on fiscal year 2019 27,000us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_AssetsHeldUnderCapitalLeasesMember
 
Future minimum lease payments on fiscal year Thereafter $ 0us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_AssetsHeldUnderCapitalLeasesMember
 
Minimum [Member]    
Lease Rental Expenses [Line Items]    
Leased period of branch offices 3 years  
Maximum [Member]    
Lease Rental Expenses [Line Items]    
Leased period of branch offices 5 years