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Goodwill (Tables)
 12 Months Ended
Dec. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Goodwill [Table Text Block]
Direct reporting unit. The rollforward of Goodwill was as follows (in thousands):
Balance, January 1, 2012
$
2,873

Currency exchange rate adjustment
67

Balance, December 31, 2012
2,940

Currency exchange rate adjustment
(200
)
Balance, December 31, 2013
2,740

Currency exchange rate adjustment
(220
)
Balance, December 31, 2014
$
2,520