Represents the term the discount is accreted.

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Represent the amount allocated to tranche right liability.

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Represents investors' rights and obligations.

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Amount of noncash expense included in interest expense to allocate debt discount and premium, and the costs to issue debt and obtain financing over the related debt instruments. Alternate captions include noncash interest expense.

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The number of shares issued in exchange for the original debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or payments in the period.

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For each line item in the statement of financial position, the amounts of gains and losses from fair value changes included in earnings.

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The cash outflow for cost incurred directly with the issuance of an equity security.

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The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws.

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The cash inflow from the issuance of common stock, preferred stock, treasury stock, stock options, and other types of equity.

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Price of a single share of a number of saleable stocks of a company.

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Per share amount of par value or stated value of stock classified as temporary equity. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable.

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The maximum number of securities classified as temporary equity that are permitted to be issued by an entity's charter and bylaws. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. If the security is a warrant or a rights issue, the warrant or rights issue is considered to be temporary equity if the issuer cannot demonstrate that it would be able to deliver upon the exercise of the option by the holder in all cases. Includes stock with put option held by ESOP and stock redeemable by holder only in the event of a change in control of the issuer.

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The number of securities classified as temporary equity that have been sold (or granted) to the entity's shareholders. Securities issued include securities outstanding and securities held in treasury. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. If the security is a warrant or a rights issue, the warrant or rights issue is considered to be temporary equity if the issuer cannot demonstrate that it would be able to deliver upon the exercise of the option by the holder in all cases. Includes stock with put option held by ESOP and stock redeemable by holder only in the event of a change in control of the issuer.

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Note 9 - Redeemable Convertible Preferred Stock (Details) (USD $)	0 Months Ended	12 Months Ended	0 Months Ended
	Oct. 27, 2014	Dec. 31, 2014	Oct. 21, 2014	May 13, 2014	Dec. 31, 2013
Note 9 - Redeemable Convertible Preferred Stock (Details) [Line Items]
Debt Conversion, Converted Instrument, Shares Issued	8,651,805
Preferred Stock, Shares Authorized		10,000,000us-gaap_PreferredStockSharesAuthorized			0us-gaap_PreferredStockSharesAuthorized
Payments of Stock Issuance Costs (in Dollars)		$ 452,000us-gaap_PaymentsOfStockIssuanceCosts
Redeemable Preferred Stock [Member]
Note 9 - Redeemable Convertible Preferred Stock (Details) [Line Items]
Temporary Equity, Shares Authorized					71,852,775
Series A Preferred Stock [Member]
Note 9 - Redeemable Convertible Preferred Stock (Details) [Line Items]
Temporary Equity, Shares Authorized		0			22,638,465
Temporary Equity, Par or Stated Value Per Share (in Dollars per share)		$ 0.001			0.001
Temporary Equity, Shares Issued		0			22,638,465
Series A-1 Preferred Stock [Member]
Note 9 - Redeemable Convertible Preferred Stock (Details) [Line Items]
Temporary Equity, Shares Authorized		0			10,909,091
Temporary Equity, Par or Stated Value Per Share (in Dollars per share)		$ 0.001			0.001
Temporary Equity, Shares Issued		0			10,909,091
Series B Preferred Stock [Member]
Note 9 - Redeemable Convertible Preferred Stock (Details) [Line Items]
Temporary Equity, Shares Authorized		0			20,754,461
Temporary Equity, Par or Stated Value Per Share (in Dollars per share)		$ 0.001			0.001
Temporary Equity, Shares Issued		0			20,754,461
Series C Preferred Stock [Member]
Note 9 - Redeemable Convertible Preferred Stock (Details) [Line Items]
Temporary Equity, Shares Authorized		0			17,550,758
Temporary Equity, Par or Stated Value Per Share (in Dollars per share)		$ 0.001			0.001
Temporary Equity, Shares Issued		0			13,202,932
Series D Preferred Stock [Member] \| Issuance Not From Conversion [Member]
Note 9 - Redeemable Convertible Preferred Stock (Details) [Line Items]
Temporary Equity, Shares Issued				42,469,626
Series D Preferred Stock [Member] \| Upon Issuance [Member]
Note 9 - Redeemable Convertible Preferred Stock (Details) [Line Items]
(in Dollars)				6,600,000
Series D Preferred Stock [Member] \| Immediately Before IPO [Member]
Note 9 - Redeemable Convertible Preferred Stock (Details) [Line Items]
(in Dollars)			1,400,000
Series D Preferred Stock [Member]
Note 9 - Redeemable Convertible Preferred Stock (Details) [Line Items]
Temporary Equity, Shares Authorized		0			0
Temporary Equity, Par or Stated Value Per Share (in Dollars per share)		$ 0.001			0.001
Temporary Equity, Shares Issued		0		52,813,827	0
Share Price (in Dollars per share)				$ 0.588656
Proceeds from Issuance or Sale of Equity (in Dollars)				25,000,000
Fair Value, Option, Changes in Fair Value, Gain (Loss) (in Dollars)			5,200,000
Payments of Stock Issuance Costs (in Dollars)		500,000		500,000
Amortization of Financing Costs and Discounts (in Dollars)				400,000
Accreted Term				5 years
Allocated To Trance Right Liability (in Dollars)				$ 100,000