Stockholder Rights Plan

12 Months Ended

Dec. 31, 2012

Stockholder Rights Plan [Abstract]

Stockholder Rights Plan

7.Stockholder Rights Plan

In December 2009, the Company's Board of Directors adopted a stockholder rights plan granting a dividend of one stock purchase right for each share of the Company's common stock outstanding as of December 18, 2009 and the Company entered into a rights agreement dated December 1, 2009 in connection therewith. The rights become exercisable only upon the occurrence of certain events specified in the rights agreement, including the acquisition of 15% of the Company's outstanding common stock by a person or group in certain circumstances.  Each right allows the holder, other than an "acquiring person," to purchase one one-hundredth of a share (a unit) of Series A Preferred Stock at an initial purchase price of $97.00 under circumstances described in the rights agreement. The purchase price, the number of units of preferred stock and the type of securities issuable upon exercise of the rights are subject to adjustment. The rights expire at the close of business December 1, 2019 unless earlier redeemed or exchanged. Until a right is exercised, the holder thereof, as such, has no rights as a stockholder of the Company, including the right to vote or to receive dividends.