Debt - 2014 Loan and Security Agreement (Details) - Term Loan	1 Months Ended
Feb. 28, 2014 USD ($) lender $ / shares shares	Aug. 01, 2016 shares
2014 Loan and Security Agreement
Debt Instrument [Line Items]
Credit facility, maximum borrowing capacity	$ 30,000,000.0
Number of lenders \| lender	2
Credit facility, remaining borrowing capacity	$ 10,000,000.0
Credit facility, minimum incremental borrowing amount	$ 1,000,000.0
Term loan, minimum interest rate	10.00%
2014 Loan and Security Agreement \| London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Debt instrument, basis spread (as a percentage)	9.00%
Tranche One
Debt Instrument [Line Items]
Credit facility, maximum borrowing capacity	$ 20,000,000.0
Common Stock \| 2014 Loan and Security Agreement
Debt Instrument [Line Items]
Warrants issued \| shares	177,865
Exercise price (in dollars per share) \| $ / shares	$ 10.12
Common Stock \| Tranche One
Debt Instrument [Line Items]
Warrants vested, shares \| shares	118,577
Common Stock Warrant \| 2014 Loan and Security Agreement
Debt Instrument [Line Items]
Class of warrant or right, vesting period (in years)	10 years
Warrants unvested, shares \| shares		59,288

Class of Warrant or Right, Number of Securities Called by Warrants or Rights, Unvested

No definition available.

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- Definition

Class of Warrant or Right, Number of Securities Called by Warrants or Rights, Vested in Period

+ References

No definition available.

+ Details

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- Definition

Class of Warrant or Right, Vesting Period

+ References

No definition available.

+ Details

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- Definition

Line of Credit Facility, Number of Lenders

+ References

No definition available.

+ Details

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- Definition

Line of credit facility, minimum incremental borrowing amount

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
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Period Type:	instant

- Definition

Exercise price per share or per unit of warrants or rights outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(i)(4))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

+ Details

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- Definition

Number of securities into which each warrant or right may be converted. For example, but not limited to, each warrant may be converted into two shares.

+ References

No definition available.

+ Details

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- Definition

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

+ References

No definition available.

+ Details

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- Definition

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

+ References

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)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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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.

+ References

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 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

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 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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- Details

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- Details

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- Details

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- Details

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