Financing	9 Months Ended
Sep. 30, 2017
Stockholders' Equity Note [Abstract]
Financing	8. Financing *Rights Offering* On September 15, 2017 the Company filed a registration statement on Form S-1 with the SEC for a proposed rights offering to holders of its common stock and holders of its warrants pursuant to which each such holder was issued non-transferrable subscription rights to purchase one share of our common stock for each share of common stock owned at, and each share of common stock into which the warrants held by them were exercisable, on October 13, 2017, subject to a pro rata reduction if the basic subscription rights are exercised for an amount in excess of 12,000,000 shares of common stock. Each subscription right entitled the holder to purchase one share of our common stock at a subscription price equal to $0.62 per share of our common stock. The prospectus was declared effective by the SEC on October 19, 2017 (File No. 333-220470). We terminated the rights offering on November 8, 2017 and all subscription payments received by the subscription agent for the rights offering will be promptly returned. *At the Market Offering* The Company had entered into an at-the-market Issuance Sales Agreement with FBR Capital Markets Co. pursuant to which it has sold shares of its common stock through FBR by any method permitted that is deemed an “at the market offering” as defined in Rule 415 under the Securities Act of 1933, as amended (the “Securities Act”), including sales made directly on or through the NASDAQ Capital Market, the existing trading market for the Company’s common stock, sales made to or through a market maker other than on an exchange or otherwise, in negotiated transactions at market prices, and/or any other method permitted by law. Sales of shares of common stock have been made pursuant to the Company’s shelf registration statement on Form S-3 (File No. 333-199274) filed with the U.S. Securities and Exchange Commission (“SEC”), the base prospectus, dated October 23, 2014, filed as part of such registration statement and the prospectus supplement, dated August 15, 2016. FBR was entitled to compensation at a fixed commission rate up to 3.0% of the gross proceeds per share sold through it as sales agent under the sales agreement. Beginning in August 2016 and through December 31, 2016, the Company sold 4,791,377 shares of common stock under the FBR Sales Agreement resulting in net proceeds of approximately $6.8 million. For the nine months ended September 30, 2017, the Company has sold an additional 2,348,580 shares of common stock under the Sales Agreement resulting in net proceeds of approximately $2.3 million after FBR’s commission and other expenses. On November 3, 2017 the Company terminated its At Market Issuance Sales Agreement with FBR. *Public Offering* On March 28, 2017, the Company sold pursuant to the terms of an Underwriting Agreement (the “Underwriting Agreement”) that it entered into on March 23, 2017 with Aegis Capital Corp. (“Aegis”), as representative of the several underwriters named therein (the “Underwriters”), 5,000,000 shares of the Company’s common stock, and 750,000 additional shares of the common stock to cover over-allotments at an offering price of $0.80 per share (the “Offering”). The net proceeds to the Company from the Offering were approximately $4.1 million, after deducting underwriting discounts, commissions, and other third party offering expenses. The Underwriting Agreement contains customary representations, warranties, and agreements by the Company, customary conditions to closing, indemnification obligations of the Company and the Underwriters, including for liabilities under the Securities Act of 1933, as amended (the “Securities Act”), other obligations of the parties and termination provisions.

Financing

9 Months Ended

Sep. 30, 2017

Stockholders' Equity Note [Abstract]

8. Financing

Rights Offering

On September 15, 2017 the Company filed a registration statement on Form S-1 with the SEC for a proposed rights offering to holders of its common stock and holders of its warrants pursuant to which each such holder was issued non-transferrable subscription rights to purchase one share of our common stock for each share of common stock owned at, and each share of common stock into which the warrants held by them were exercisable, on October 13, 2017, subject to a pro rata reduction if the basic subscription rights are exercised for an amount in excess of 12,000,000 shares of common stock. Each subscription right entitled the holder to purchase one share of our common stock at a subscription price equal to $0.62 per share of our common stock. The prospectus was declared effective by the SEC on October 19, 2017 (File No. 333-220470). We terminated the rights offering on November 8, 2017 and all subscription payments received by the subscription agent for the rights offering will be promptly returned.

At the Market Offering

The Company had entered into an at-the-market Issuance Sales Agreement with FBR Capital Markets Co. pursuant to which it has sold shares of its common stock through FBR by any method permitted that is deemed an “at the market offering” as defined in Rule 415 under the Securities Act of 1933, as amended (the “Securities Act”), including sales made directly on or through the NASDAQ Capital Market, the existing trading market for the Company’s common stock, sales made to or through a market maker other than on an exchange or otherwise, in negotiated transactions at market prices, and/or any other method permitted by law. Sales of shares of common stock have been made pursuant to the Company’s shelf registration statement on Form S-3 (File No. 333-199274) filed with the U.S. Securities and Exchange Commission (“SEC”), the base prospectus, dated October 23, 2014, filed as part of such registration statement and the prospectus supplement, dated August 15, 2016. FBR was entitled to compensation at a fixed commission rate up to 3.0% of the gross proceeds per share sold through it as sales agent under the sales agreement. Beginning in August 2016 and through December 31, 2016, the Company sold 4,791,377 shares of common stock under the FBR Sales Agreement resulting in net proceeds of approximately $6.8 million. For the nine months ended September 30, 2017, the Company has sold an additional 2,348,580 shares of common stock under the Sales Agreement resulting in net proceeds of approximately $2.3 million after FBR’s commission and other expenses. On November 3, 2017 the Company terminated its At Market Issuance Sales Agreement with FBR.

Public Offering

On March 28, 2017, the Company sold pursuant to the terms of an Underwriting Agreement (the “Underwriting Agreement”) that it entered into on March 23, 2017 with Aegis Capital Corp. (“Aegis”), as representative of the several underwriters named therein (the “Underwriters”), 5,000,000 shares of the Company’s common stock, and 750,000 additional shares of the common stock to cover over-allotments at an offering price of $0.80 per share (the “Offering”). The net proceeds to the Company from the Offering were approximately $4.1 million, after deducting underwriting discounts, commissions, and other third party offering expenses. The Underwriting Agreement contains customary representations, warranties, and agreements by the Company, customary conditions to closing, indemnification obligations of the Company and the Underwriters, including for liabilities under the Securities Act of 1933, as amended (the “Securities Act”), other obligations of the parties and termination provisions.