Adjusted EBITDA

No definition available.

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- Definition

The total leverage ratio permitted after the third fiscal year following the current fiscal year. The total leverage ratio is equivalent to the funded indebtedness divided by earnings before interest, taxes, depreciation and amortization.

+ References

No definition available.

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- Definition

Debt Instrument, Basis Spread on Variable Rate, if Cash and Cash Equivalents are Greater than 125 Percent of Outstanding Principal of Borrowings on Facility

+ References

No definition available.

+ Details

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- Definition

Debt Instrument, Basis Spread on Variable Rate, if Cash and Cash Equivalents are Less or Equal to 125 Percent of Outstanding Principal of Borrowings on Facility

+ References

No definition available.

+ Details

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- Definition

Debt Instrument, Covenant, Event of Default, Interest Rate Spread Above Otherwise Applicable Interest Rate

+ References

No definition available.

+ Details

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- Definition

Minimum Prime Rate

+ References

No definition available.

+ Details

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- Definition

Amount of noncash expense included in interest expense to amortize debt discount and premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate captions include noncash interest expense.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28541-108399

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.8)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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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

Number 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))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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- Definition

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.

+ References

No definition available.

+ 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.

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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.

+ References

No definition available.

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- Definition

Amount, after accumulated amortization, of debt discount.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28541-108399

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400

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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

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- Definition

The cash outflow for loan and debt issuance costs.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3291-108585

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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.

+ References

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=98514028&loc=d3e3291-108585

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Borrowings - Opus Bank Term Loan (Details)	1 Months Ended		12 Months Ended
Borrowings - Opus Bank Term Loan (Details)	Jul. 31, 2016 USD ($)	Apr. 30, 2015 USD ($) shares	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Oct. 30, 2015 shares
Debt Instrument [Line Items]
Term loan borrowings repaid			$ 16,364,000	$ 15,650,000	$ 7,600,000
Unamortized debt discount			200,000
Amortization of debt discount			$ 82,000	646,000	504,000
Opus Bank Term Loan [Member] \| Secured Debt [Member]
Debt Instrument [Line Items]
Debt instrument, agreement period		3 years
Line of credit facility, maximum borrowing capacity		$ 15,000,000
Debt service coverage ratio, after September 30, 2015		1.10
Quarterly adjusted EBITDA		$ 1
Debt instrument, interest rate spread above otherwise applicable interest rate (as a percent)		5.00%
Term loan borrowings repaid	$ 14,000,000
Payment for financing costs		$ 100,000
Unamortized debt discount	400,000	$ 1,000,000
Amortization of debt discount				$ 200,000	$ 400,000
Opus Bank Term Loan [Member] \| Secured Debt [Member] \| Interest Expense [Member]
Debt Instrument [Line Items]
Amortization of debt discount	$ 400,000
Opus Bank Term Loan [Member] \| Prime Rate [Member] \| Secured Debt [Member]
Debt Instrument [Line Items]
Debt instrument, description of variable rate basis		(a) the higher of (i) the prime rate (as publicly announced from time to time by the Wall Street Journal) and (ii) 3.25%
Debt instrument, prime rate, minimum (as a percent)		3.25%
Debt instrument, basis spread on variable rate, if our cash equivalents are greater than 125% of the outstanding principal of our borrowings under the term loan facility (as a percent)		1.00%
Debt instrument, basis spread on variable rate, if our cash and cash equivalents are less than or equal to 125% of the outstanding principal of our borrowings under the term loan facility (as a percent)		2.00%
Series E Preferred Warrants [Member]
Debt Instrument [Line Items]
Number of shares each warrant may purchase (in shares) \| shares		31,897
Common Stock Warrants Three [Member]
Debt Instrument [Line Items]
Common stock warrants (in shares) \| shares						315,282