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Accumulated Other Comprehensive Income (Tables)
 3 Months Ended
Mar. 31, 2013
Accumulated Other Comprehensive Income (Loss) Disclosure [Abstract]  
Schedule of Changes in Accumulated Other Comprehensive Income
The following table summarizes the changes in accumulated balances of other comprehensive income for the three months ended March 31, 2013:
 
Foreign currency items
 
Change in unrealized gains on available for sale securities
 
Total
 
(in thousands)
Accumulated other comprehensive income (loss), net of tax, as of December 31, 2012
$
1,381

 
$
1,538

 
$
2,919

Other comprehensive income before reclassifications
(2,289
)
 
(295
)
 
(2,584
)
Amounts reclassified from accumulated other comprehensive income
—

 
(44
)
 
(44
)
Net decrease in other comprehensive income
(2,289
)
 
(339
)
 
(2,628
)
Accumulated other comprehensive income (loss), net of tax, as of March 31, 2013
$
(908
)
 
$
1,199

 
$
291