Accumulated Other Comprehensive Income (Loss) (Tables)
 12 Months Ended
Dec. 31, 2013
Accumulated Other Comprehensive Income (Loss) [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, 2011
$
242

 
$
2

 
$
244

Change during the year
259

 
6

 
265

Ending balance at December 31, 2012
$
501

 
$
8

 
$
509

Change during the year
506

 
—

 
506

Ending balance at December 31, 2013
$
1,007

 
$
8

 
$
1,015