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Comprehensive income (loss)
 12 Months Ended
Dec. 31, 2012
Stockholders' Equity Note [Abstract]  
Comprehensive Income (Loss) Note [Text Block]
9. Comprehensive income (loss)

 

Accumulated other comprehensive income (loss), as reflected in the consolidated balance sheets, consists of pension liability adjustments, net of taxes, and changes in fair value of derivatives, net of taxes. The components of accumulated other comprehensive income (loss) as of December 31, 2012 and 2011, and changes during the periods then ended, are presented below (in thousands):

 

    Pension Liability     Fair Value of     Accumulated Other  
    Adjustment     Derivatives     Comprehensive Income (Loss)  
                   
Balance at January 1, 2011   $ 379     $ 823     $ 1,202  
Current-period change     (284 )     (1,945 )     (2,229 )
Balance at December 31, 2011     95       (1,122 )     (1,027 )
Current-period change     (138 )     1,202       1,064  
Balance at December 31, 2012   $ (43 )   $ 80     $ 37