Capital Stock

12 Months Ended

Dec. 31, 2013

Equity [Abstract]

Capital Stock

(9) Capital Stock

On July 20, 2012, we completed a fully subscribed stockholder rights offering, pursuant to which our existing stockholders exercising their basic and oversubscription rights purchased a total of 7,250,000 shares of our common stock, which was the maximum number of shares offered in the rights offering, at a price of $0.33 per share. We received approximately $2.2 million in proceeds from the rights offering, net of costs. As of December 31, 2013 and 2012, we had 24,088 authorized but unissued shares of preferred stock. In addition, as of December 31, 2013, 980,000 authorized but unissued shares of common stock have been reserved for future issuance upon exercise of stock options.