Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidated Statements Of Comprehensive Income (Parenthetical)

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Condensed Consolidated Statements Of Comprehensive Income (Parenthetical) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Statement of Other Comprehensive Income [Abstract]    
Unrealized holding gains (losses) on available-for-sale securities, tax (expense) benefit $ (3) $ 1
Unrealized gains (losses) on derivative transactions, tax (expense) benefit (550) (229)
Foreign currency translation adjustment, tax (expense) benefit $ 235 $ (335)