Credit Arrangements - Additional Information (Detail)				9 Months Ended
	May 10, 2017 USD ($)	May 13, 2015 USD ($)	Jan. 27, 2015 USD ($)	Jun. 30, 2017 USD ($)	Mar. 31, 2017	Dec. 09, 2016 USD ($)	Sep. 30, 2016 USD ($)	Oct. 05, 2015 USD ($)
Line of Credit Facility [Line Items]
Derivative liability, at fair value				$ 25,000			$ 67,000
Silicon Valley Bank
Line of Credit Facility [Line Items]
Adjusted quick ratio as above prime rate				1.25%
Foreign receivables accounts		$ 1,000,000
Adjusted quick ratio			1.50
Debt instrument net change in deferred revenue								$ 1.00
Secured Revolving Line of Credit
Line of Credit Facility [Line Items]
Borrowing capacity under secured revolving line of credit		$ 4,000,000
Interest rate payable on subordinate note			7.00%
Notes payable outstanding				$ 1,515,000			1,600,000
Annual interest rate				6.25%
Secured Revolving Line of Credit | Silicon Valley Bank
Line of Credit Facility [Line Items]
Credit facility for advances				$ 2,485,000
Second Amended Agreement
Line of Credit Facility [Line Items]
Interest accrued on revolving line of credit				5.50%
Percentage of advance rate on domestic receivables					80.00%
Advance rate on foreign receivables				75.00%
Total term loan			$ 2,500,000
Amortization period of term loan				36 months
Term Loan | Silicon Valley Bank
Line of Credit Facility [Line Items]
Notes payable outstanding				$ 486,000			1,100,000
Annual interest rate				7.00%
Tenth Amendment
Line of Credit Facility [Line Items]
Adjusted quick ratio as above prime rate	2.00%
Interest accrued on revolving line of credit				6.25%
Required net proceeds from issuance and sale of additional equity	$ 750,000
Tenth Amendment | Period Ending June 30, 2017
Line of Credit Facility [Line Items]
Minimum EBITDA required	(500,000)
Tenth Amendment | Period Ending September 30, 2017
Line of Credit Facility [Line Items]
Minimum EBITDA required	$ 0
Eighth Amendment | Secured Revolving Line of Credit
Line of Credit Facility [Line Items]
Borrowing capacity under secured revolving line of credit						$ 1,000,000
Warrant | Partners for Growth IV, L.P.
Line of Credit Facility [Line Items]
Derivative liability, at fair value				$ 25,000			$ 67,000