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Accumulated Other Comprehensive Income (Tables)
 9 Months Ended
Sep. 30, 2013
AccumulatedOtherComprehensiveIncomeTextBlockAbstract  
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]
Changes in the components of "Accumulated other comprehensive income" were as follows:
 
 
Unrealized
Gain on
Securities
 
Cumulative
Translation
Adjustment
 
Total
 
(in thousands)
Balance at January 1, 2013
$
927

 
$
19

 
$
946

 
 
 
 
 
 
Other comprehensive income (loss) before reclassifications, net of taxes
6,593

 
(39
)
 
6,554

Amounts reclassified to realized gain
(1,834
)
 
(346
)
 
(2,180
)
 
 
 
 
 
 
Net current period other comprehensive income
4,759

 
(385
)
 
4,374

 
 
 
 
 
 
Balance at September 30, 2013
$
5,686

 
$
(366
)
 
$
5,320