Preferred Stock	9 Months Ended
Sep. 30, 2015
Preferred Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Preferred Stock	Preferred Stock Our Certificate of Incorporation authorizes the issuance of up to 5,000,000 shares of preferred stock. As of September 30, 2015, there were: 100 shares of Series B-1 Preferred Stock authorized, and no shares issued or outstanding; 7,500 shares of Series A-2 Preferred Stock authorized and 32 shares issued and outstanding; and 4,000 shares of Series D Preferred Stock authorized and no shares issued or outstanding. Each share of Series A-2 Preferred Stock has a stated value of $7,500 per share (the “A-2 Stated Value”), a liquidation preference equal to the Series A-2 Stated Value, and is convertible at the holder’s election into Common Stock at a conversion price per share of $2.9835 as of September 30, 2015. Therefore, each share of Series A-2 Preferred Stock is convertible into 2,514 shares of Common Stock as of September 30, 2015. The conversion price is subject to adjustment upon the occurrence of certain events set forth in our Certificate of Incorporation. During the nine months ended September 30, 2015, the conversion price was adjusted from $2.9844 per share to $2.9835 per share as a result of sales in the ATM Offering during this period (see Note 9). The Series A-2 Preferred Stock is subordinate to the Series B-1 Preferred Stock but senior to all other classes of equity, has weighted average anti-dilution protection and, commencing on January 1, 2013, is entitled to cumulative dividends at a rate of 5% per annum, payable quarterly, based on the Series A-2 Stated Value. Once dividend payments commence, all dividends are payable at the option of the holder in cash or through the issuance of a number of additional shares of Series A-2 Preferred Stock with an aggregate liquidation preference equal to the dividend amount payable on the applicable dividend payment date. During the three and nine months ended September 30, 2015, a holder of the Series A-2 Preferred Stock elected to convert 21 shares and $22,000 of accrued dividends into 60,497 shares of common stock. As of September 30, 2015, the Company has recorded $33,000 in accrued dividends on the accompanying condensed consolidated balance sheet related to the remaining Series A-2 Preferred Stock outstanding. In accordance with ASC Topic 815, we evaluated whether our convertible preferred stock contains provisions that protect holders from declines in our stock price or otherwise could result in modification of the exercise price and/or shares to be issued under the respective preferred stock agreements based on a variable that is not an input to the fair value of a “fixed-for-fixed” option and require a derivative liability. The Company determined no derivative liability is required under ASC Topic 815 with respect to our convertible preferred stock. A contingent beneficial conversion amount is required to be calculated and recognized when and if the adjusted conversion price of the convertible preferred stock is adjusted to reflect a down round stock issuance that reduces the conversion price below the $1.16 fair value of the common stock on the issuance date of the convertible preferred stock.

Preferred Stock

Our Certificate of Incorporation authorizes the issuance of up to 5,000,000 shares of preferred stock. As of September 30, 2015, there were: 100 shares of Series B-1 Preferred Stock authorized, and no shares issued or outstanding; 7,500 shares of Series A-2 Preferred Stock authorized and 32 shares issued and outstanding; and 4,000 shares of Series D Preferred Stock authorized and no shares issued or outstanding.

Each share of Series A-2 Preferred Stock has a stated value of $7,500 per share (the “A-2 Stated Value”), a liquidation preference equal to the Series A-2 Stated Value, and is convertible at the holder’s election into Common Stock at a conversion price per share of $2.9835 as of September 30, 2015. Therefore, each share of Series A-2 Preferred Stock is convertible into 2,514 shares of Common Stock as of September 30, 2015. The conversion price is subject to adjustment upon the occurrence of certain events set forth in our Certificate of Incorporation. During the nine months ended September 30, 2015, the conversion price was adjusted from $2.9844 per share to $2.9835 per share as a result of sales in the ATM Offering during this period (see Note 9). The Series A-2 Preferred Stock is subordinate to the Series B-1 Preferred Stock but senior to all other classes of equity, has weighted average anti-dilution protection and, commencing on January 1, 2013, is entitled to cumulative dividends at a rate of 5% per annum, payable quarterly, based on the Series A-2 Stated Value. Once dividend payments commence, all dividends are payable at the option of the holder in cash or through the issuance of a number of additional shares of Series A-2 Preferred Stock with an aggregate liquidation preference equal to the dividend amount payable on the applicable dividend payment date. During the three and nine months ended September 30, 2015, a holder of the Series A-2 Preferred Stock elected to convert 21 shares and $22,000 of accrued dividends into 60,497 shares of common stock. As of September 30, 2015, the Company has recorded $33,000 in accrued dividends on the accompanying condensed consolidated balance sheet related to the remaining Series A-2 Preferred Stock outstanding.

In accordance with ASC Topic 815, we evaluated whether our convertible preferred stock contains provisions that protect holders from declines in our stock price or otherwise could result in modification of the exercise price and/or shares to be issued under the respective preferred stock agreements based on a variable that is not an input to the fair value of a “fixed-for-fixed” option and require a derivative liability. The Company determined no derivative liability is required under ASC Topic 815 with respect to our convertible preferred stock. A contingent beneficial conversion amount is required to be calculated and recognized when and if the adjusted conversion price of the convertible preferred stock is adjusted to reflect a down round stock issuance that reduces the conversion price below the $1.16 fair value of the common stock on the issuance date of the convertible preferred stock.