Notes Payable - Amended Agreement (Details)		9 Months Ended
Jun. 30, 2016 USD ($) instrument	Sep. 30, 2016 USD ($)
Notes payable
Proceeds from notes payable		$ 17,500,000
Amended and Restated Loan and Security Agreement
Notes payable
Potential maximum borrowing capacity	$ 30,000,000
Number of tranches under facility \| instrument	4
Proceeds from notes payable	$ 15,000,000
Oxford Notes
Notes payable
Amount used to retire existing loans	11,000,000
Final payment fee, notes	$ 1,000,000
Term Notes Payable \| Amended and Restated Loan and Security Agreement
Notes payable
Prepayment fee percentage within one year of funding	3.00%
Prepayment fee percentage second year after funding date	2.00%
Prepayment fee percentage after second anniversary of funding	1.00%
Debt default, interest rate (as a percent)	5.00%
Term Notes Payable \| Amended and Restated Loan and Security Agreement \| LIBOR
Notes payable
Floating annual rate, spread (as a percent)	6.31%
90-day U.S. Dollar LIBOR	90-day U.S. Dollar LIBOR
Term Notes Payable \| Amended and Restated Loan and Security Agreement \| Floor interest rate
Notes payable
Floating annual rate, spread (as a percent)	0.64%
Term Notes Payable \| Amended and Restated Loan and Security Agreement \| Floor interest rate \| Minimum
Notes payable
Interest rate (as a percent)	6.95%
Term Notes Payable \| Amended and Restated Loan and Security Agreement \| Interest only period
Notes payable
Frequency of payment	monthly
Repayment period	12 months
Type of payment required	interest-only
Term Notes Payable \| Amended and Restated Loan and Security Agreement \| Amortization period
Notes payable
Frequency of payment	monthly
Repayment period	36 months
Type of payment required	principal and interest
Tranche 1 Term Loan \| Amended and Restated Loan and Security Agreement
Notes payable
Maximum amount available under facility	$ 15,000,000
Tranche 2 Term Loan \| Amended and Restated Loan and Security Agreement
Notes payable
Maximum amount available under facility	5,000,000
Tranche 3 Term Loan \| Amended and Restated Loan and Security Agreement
Notes payable
Maximum amount available under facility	5,000,000
Tranche 4 Term Loan \| Amended and Restated Loan and Security Agreement
Notes payable
Maximum amount available under facility	5,000,000
Trailing six month revenue requirement	$ 4,000,000
Tranche 2 and Tranche 3 Term Loans \| Amended and Restated Loan and Security Agreement \| Interest only period, contingent terms met
Notes payable
Repayment period	6 months
Tranche 2 and Tranche 3 Term Loans \| Amended and Restated Loan and Security Agreement \| Amortization period, contingent terms met
Notes payable
Repayment period	30 months

In the event of default, contractual interest rate for funds borrowed under the debt agreement.

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- Definition

Number of tranches available under terms of debt agreement.

+ References

No definition available.

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- Definition

Percentage fee applied to outstanding debt retired after second anniversary of funding date under prepayment terms of debt agreement.

+ References

No definition available.

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Percentage fee applied to outstanding debt retired within one year of funding date under prepayment terms of debt agreement.

+ References

No definition available.

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Percentage fee applied to outstanding debt retired within second year after funding date under prepayment terms of debt agreement.

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- Definition

Minimum amount of revenue during the defined period of measurement used as a threshold for additional borrowing availability under terms of debt agreement.

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No definition available.

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- Definition

The aggregate borrowing capacity under the credit facility, consisting of the maximum borrowing capacity plus the contingent increase, if any one or more of the existing banks or new banks agree to provide such increased commitment amount.

+ References

No definition available.

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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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No definition available.

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The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR.

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No definition available.

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- Definition

Description of the frequency of periodic payments (monthly, quarterly, annual).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6479336&loc=d3e64711-112823

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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- Definition

Description of the payment terms of the debt instrument (for example, whether periodic payments include principal and frequency of payments) and discussion about any contingencies associated with the payment.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(3))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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-Section 50
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-URI http://asc.fasb.org/extlink&oid=6479336&loc=d3e64711-112823

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- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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- Definition

The cash outflow for incremental, external costs directly pertaining to an early extinguishment of debt, including legal costs and prepayment penalties, and excluding interest and repayment of debt principal.

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The cash inflow from a borrowing supported by a written promise to pay an obligation.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3255-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Glossary Financing Activities
-URI http://asc.fasb.org/extlink&oid=6513228

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- Definition

The cash outflow to repay long-term debt that is wholly or partially secured by collateral. Excludes repayments of tax exempt secured debt.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3291-108585

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