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Stockholders' Equity
 12 Months Ended
Dec. 31, 2013
Stockholders' Equity  
Stockholders' Equity

Note 9: Stockholders' Equity

        In the second quarter of 2013, the Company completed a public offering and issued approximately 7.5 million shares of its common stock for approximately $27.7 million in net proceeds. The Company's chief executive officer purchased 250,000 shares at the public offering price.

Stockholder Rights Plan

        On November 10, 2010, the Company executed a rights agreement in connection with the declaration by the Company's board of directors of a dividend of one preferred stock purchase right (a "Right") to be paid on November 10, 2010 (the "Record Date") for each share of the Company's common stock issued and outstanding at the close of business on the Record Date. Each Right entitles the registered holder to purchase one one-thousandth of a share of Series AA Preferred Stock, $0.01 par value per share (a "Preferred Share"), of the Company at a price of $48.00 per one one-thousandth of a Preferred Share, subject to adjustment. The rights will not be exercisable until a third party acquires 15.0% of the Company's common stock or commences or announces its intent to commence a tender offer for at least 15.0% of the common stock, other than holders of "grandfathered stock" as defined below.

        "Grandfathered stock" refers to stock held by Carl E. Berg and his affiliates. The beneficial ownership threshold for a holder of grandfathered stock is 20%, rather than 15%. In 2011, the Company amended the rights agreement to designate Artis Capital Management L.P. and its affiliates (collectively, "Artis") as a holder of grandfathered stock. In 2012, an amendment removed this designation and reduced Artis' ownership threshold to 15%. In addition, under the rights agreement, the firm of Ingalls & Snyder, or I&S, and its managed account beneficial owners collectively will not trigger the rights as long as none of their shares are held for the purpose of acquiring control or effecting change or influence in control of the Company. This exclusion applies only to shares of common stock for which there is only shared dispositive power and I&S has only non-discretionary voting power. The rights agreement could delay, deter or prevent an investor from acquiring the Company in a transaction that could otherwise result in its stockholders receiving a premium over the market price for their shares of common stock.