Credit Arrangements Loan and Security Agreement (Details)					3 Months Ended			6 Months Ended	9 Months Ended
	Mar. 22, 2017	Feb. 08, 2017	Dec. 14, 2015 USD ($)	May 13, 2015 USD ($) $ / shares shares	Jun. 30, 2017 USD ($)	Mar. 31, 2017 USD ($)	Jun. 30, 2016 USD ($)	Mar. 31, 2017 USD ($)	Jun. 30, 2017 USD ($) Installment	Jun. 30, 2016 USD ($)	Sep. 30, 2016 USD ($)	Aug. 12, 2015 $ / shares
Line of Credit Facility [Line Items]
Warrant expiration date									May 14, 2020
Derivative liability, at fair value					$ 25,000				$ 25,000		$ 67,000
Gain on derivative									42,000	$ 53,000
Derivative liability					(25,000)				$ (25,000)		(67,000)
Warrant Debt
Line of Credit Facility [Line Items]
Interest rate during period									0.00%
Derivative liability, at fair value					80,000				$ 80,000
Derivative liability					(136,000)				(136,000)
Debt discount accreted as interest expense			$ 216,000
Debt interest expense term								5 years
Fair value of warrants					142,000				$ 142,000
PFG Debt
Line of Credit Facility [Line Items]
PFG debt, net of discount			$ 1,784,000
Debt interest expense term									3 years
Debt default amount					740,000				$ 740,000		1,300,000
Accretion of discount expense						$ 5,000	$ 4,000	$ 15,000		12,000
Amortization of debt discount					18,000		$ 18,000		55,000	$ 52,000
Fair value of warrants					675,000				675,000
Partners for Growth IV, L.P.
Line of Credit Facility [Line Items]
PFG debt, net of discount				$ 2,000,000
Number of securities called by warrants or rights (in shares) | shares				50,000
Exercise price of warrant (in usd per share) | $ / shares				$ 9.66								$ 6.80
Exchange price of warrants (in usd per share)				$ 200,000
Exercise period				5 years
Gain on derivative					21,000				42,000
Partners for Growth IV, L.P. | Warrant
Line of Credit Facility [Line Items]
Derivative liability, at fair value					$ 25,000				$ 25,000		$ 67,000
Partners for Growth IV, L.P. | Tranche One
Line of Credit Facility [Line Items]
PFG debt, net of discount				$ 1,500,000
Debt instrument, interest rate, percentage					10.75%				10.75%
Number of equal monthly installments | Installment									30
Debt instrument, maturity date									May 01, 2018
Number of securities called by warrants or rights (in shares) | shares				37,500
Partners for Growth IV, L.P. | Tranche Two
Line of Credit Facility [Line Items]
PFG debt, net of discount				$ 500,000
Number of equal monthly installments | Installment									29
Number of securities called by warrants or rights (in shares) | shares				12,500
Monthly Basis | Silicon Valley Bank | Ninth Amendment
Line of Credit Facility [Line Items]
Debt liquidity ratio	1.5
Monthly Basis | Silicon Valley Bank | Loan Modification No. 2
Line of Credit Facility [Line Items]
Debt liquidity ratio		1.5
Non Quarter End Months | Silicon Valley Bank | Ninth Amendment
Line of Credit Facility [Line Items]
Debt liquidity ratio	1.6
Non Quarter End Months | Silicon Valley Bank | Loan Modification No. 2
Line of Credit Facility [Line Items]
Debt liquidity ratio		1.60
Quarter End Months | Silicon Valley Bank | Ninth Amendment
Line of Credit Facility [Line Items]
Debt liquidity ratio	1.75
Quarter End Months | Silicon Valley Bank | Loan Modification No. 2
Line of Credit Facility [Line Items]
Debt liquidity ratio		1.75