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Stockholders' Equity
 3 Months Ended
Mar. 31, 2016
Stockholders' Equity [Abstract]  
Stockholders' Equity
12.Stockholders’ Equity

Preferred Stock

We have authorized 5 million shares of $0.001 par value preferred stock. Our Board of Directors is authorized to designate the terms and conditions of any preferred stock we issue without further action by the common stockholders.  There were 13,500 shares of Series A 3.6% Convertible Preferred Stock that had been issued at March 31, 2016 and December 31, 2015, none of which were outstanding as of either date.

The fair value of the common stock into which the Series A 3.6% Convertible Preferred Stock was convertible on the date of issuance exceeded the proceeds allocated to the preferred stock, resulting in the beneficial conversion feature that we recognized as a dividend to the preferred shareholders and, accordingly, an adjustment to net loss to arrive at net loss allocable to common shareholders.  Certain shares of Series A 3.6% Convertible Preferred Stock were not convertible until shareholder approval, which occurred in January 2015.  As a result, dividend for the beneficial conversion feature of $0.7 million was recorded during the quarter ended March 31, 2015.

In connection with the 3.6% Convertible Preferred Stock outstanding at December 31, 2014, we declared a cash dividend of $0.08 million. The cash dividend was paid in January and April 2015.

Common Stock

In May 2015, the Company entered into a Securities Purchase Agreement with certain institutional investors pursuant to which the Company agreed to sell up to $25 million of units, with each unit consisting of one share of its common stock and one warrant to purchase one share of its common stock, in a registered direct offering.  The purchase and sale of the units took place in two separate closings.  At the initial closing, which took place on May 8, 2015, the Company received approximately $17.4 million in net proceeds from the sale of units. The second closing of the purchase and sale of the units occurred on August 27, 2015 upon satisfaction of certain conditions, including, without limitation, stockholder vote, and the Company received approximately $2.1 million in net proceeds from the sale of 500,000 units of the 1,000,000 units available for sale at the second closing.
 
On December 17, 2015, the Company and the holders of October 2014 warrants agreed to amend the October 2014 Warrants pursuant to an Amendment to Common Stock Purchase Warrant (the “2014 Amendment”). Also on December 17, 2015, the Company and the holders of the May 2015 Warrants and the August 2015 Warrants (collectively the “2015 Warrants”) agreed to amend the 2015 Warrants pursuant to an Amendment to Series A-1 Warrant to Purchase Common Stock and Amendment to Series A-2 Warrant to Purchase Common Stock, respectively (the “2015 Amendment” and, together with the 2014 Amendment, the “Warrant Amendments”). The Warrant Amendments provide that the holders may exercise their warrants on a “cashless exercise” basis in whole on or prior to December 31, 2015, whereby each exercising holder of the amended 2015 Warrants would receive 0.75 shares for each warrants share exercised and each exercising holder of the amended 2014 Warrants would receive 0.69 shares for each warrant share exercised. In addition, the Warrant Amendments removed certain provisions which provided that the exercise price of the Warrants would be reset in the event of certain equity issuances by the Company for a price below the exercise price of the Warrants as of the time of such issuance. All 2014 Warrants and all 2015 Warrants were cashless exercised on or before December 31, 2015.