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Significant Stock-Based Plan Activity and Stock-Based Compensation (Tables)
3 Months Ended
Mar. 31, 2013
Significant Stock-Based Plan Activity and Stock-Based Compensation [Abstract]  
Stock-based compensation expense
Total stock-based compensation expense, recognized as a component of Selling, general and administrative expense on our Consolidated Statements of Operations, was as follows (in thousands):

   
Three Months Ended March 31,
 
   
2013
  
2012
 
Stock-based compensation expense
 $102  $134 

At March 31, 2013, we had total unrecognized stock-based compensation expense of $1.0 million, which will be recognized over the weighted average remaining vesting period of 3.0 years.