Amount of decrease in additional paid in capital (APIC) resulting from direct costs associated with issuing stock. Includes, but is not limited to, legal and accounting fees and direct costs associated with stock issues under a shelf registration.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
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-Name Accounting Standards Codification
-Topic 505
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- Definition

The amount of debt discount that was originally recognized at the issuance of the instrument that has yet to be amortized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Carrying value as of the balance sheet date of [accrued] interest payable on all forms of debt, including trade payables, that has been incurred and is unpaid. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Statements of Convertible Preferred Stock and Stockholders Deficit (Parenthetical) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2014	Dec. 31, 2013
Accrued interest		$ 142	$ 78
Series D-1 Convertible Preferred Stock
Issuance cost			99
Series D-2 Convertible Preferred Stock
Issuance cost			291
Series C Convertible Preferred Stock
Issuance cost	$ 221	181	$ 71
2014 Convertible Promissory Notes \| Series C Convertible Preferred Stock
Accrued interest		173
Unamortized debt discount		$ 44
Private Placement
Issuance cost	$ 3,223