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Accumulated Other Comprehensive Income (Tables)
 3 Months Ended
Mar. 31, 2016
Equity [Abstract]  
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]
 
Foreign currency translation adjustment
(Amount in thousands)
 
Unrealized gain (loss) on available-for-sale securities
(Amount in thousands)
 
Accumulated Other Comprehensive Income (Loss)
(Amount in thousands)
Beginning balance at December 31, 2015
$
(1,582
)
 
$
(12
)
 
$
(1,594
)
Change during January- March 2016
184

 
12

 
196

Balance at March 31, 2016
(1,398
)
 
—

 
(1,398
)