Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Liabilities [Abstract]
Fair value of loan	$ 21,400	$ 22,200
Long-Term Debt	21,451	20,302
Recurring [Member]
Assets [Abstract]
Fair Value	26,316	44,936
Recurring [Member] \| Level 1 [Member]
Assets [Abstract]
Fair Value	26,316	44,936
Recurring [Member] \| Level 2 [Member]
Assets [Abstract]
Fair Value	0	0
Recurring [Member] \| Level 3 [Member]
Assets [Abstract]
Fair Value	0	0
Recurring [Member] \| Cash and cash equivalents [Member]
Assets [Abstract]
Fair Value	26,091	44,711
Recurring [Member] \| Cash and cash equivalents [Member] \| Level 1 [Member]
Assets [Abstract]
Fair Value	26,091	44,711
Recurring [Member] \| Cash and cash equivalents [Member] \| Level 2 [Member]
Assets [Abstract]
Fair Value	0	0
Recurring [Member] \| Cash and cash equivalents [Member] \| Level 3 [Member]
Assets [Abstract]
Fair Value	0	0
Recurring [Member] \| Certificate of Deposit [Member]
Assets [Abstract]
Fair Value	225	225
Recurring [Member] \| Certificate of Deposit [Member] \| Level 1 [Member]
Assets [Abstract]
Fair Value	225	225
Recurring [Member] \| Certificate of Deposit [Member] \| Level 2 [Member]
Assets [Abstract]
Fair Value	0	0
Recurring [Member] \| Certificate of Deposit [Member] \| Level 3 [Member]
Assets [Abstract]
Fair Value	0	0
Recurring [Member] \| Common Stock Warrant Liability [Member]
Liabilities [Abstract]
Fair Value	820	1,258
Recurring [Member] \| Common Stock Warrant Liability [Member] \| Level 1 [Member]
Liabilities [Abstract]
Fair Value	0	0
Recurring [Member] \| Common Stock Warrant Liability [Member] \| Level 2 [Member]
Liabilities [Abstract]
Fair Value	0	0
Recurring [Member] \| Common Stock Warrant Liability [Member] \| Level 3 [Member]
Liabilities [Abstract]
Fair Value	$ 820	$ 1,258

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258

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Fair value of financial and nonfinancial obligations.

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- Definition

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

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Carrying amount of long-term debt, net of unamortized discount or premium, excluding amounts to be repaid within one year or the normal operating cycle, if longer (current maturities). Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ 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)

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

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