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STATEMENTS OF CONSOLIDATED COMPREHENSIVE INCOME (LOSS) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Comprehensive Income Net Of Tax [Abstract]        
Net income $ 6,386 $ 6,596 $ 11,351 $ 14,729
Other comprehensive income (loss), net of tax        
Foreign currency translation adjustment (8,560) (7,159) (8,140) (1,886)
Recognized net actuarial loss (net of tax provision $46 and $75 for the three months ended June 30, 2013 and 2012, and net of tax provision $93 and $142 for the six months ended June 30, 2013 and 2012) 76 124 153 233
Other comprehensive income (loss), net of tax (8,484) (7,035) (7,987) (1,653)
Comprehensive income (loss) $ (2,098) $ (439) $ 3,364 $ 13,076