XML 32 R20.htm IDEA: XBRL DOCUMENT v3.7.0.1
Nature of Operations and Summary of Significant Accounting Policies - Additional Information (Detail)
3 Months Ended 6 Months Ended
Mar. 31, 2017
USD ($)
institution
Sep. 30, 2016
USD ($)
Mar. 31, 2016
USD ($)
Mar. 31, 2017
USD ($)
segment
institution
Mar. 31, 2016
USD ($)
Accounting Policies [Abstract]          
Number of financial institutions signed agreements to deploy mobile deposit (in institutions) | institution 5,600     5,600  
Foreign currency translation adjustment $ 74,000   $ 1,000 $ (296,000) $ (129,000)
Number of operating segments (in segments) | segment       1  
Number of reporting unit (in segments) | segment       1  
Impairment of goodwill and intangibles   $ 0   $ 0  
Other-than-temporary impairment charges recognized 0   $ 0 0 $ 0
Allowance for doubtful accounts receivable 43,000 35,000   43,000  
Accumulated other comprehensive loss $ 356,000 $ 42,000   $ 356,000