Inventory (Tables)

12 Months Ended

Dec. 31, 2012

Inventory Disclosure [Abstract]

Schedule of Inventory, Current [Table Text Block]

The components of inventories were as follows:

	December 31,
(In thousands of U.S. dollars)	2011		2012
Raw materials		921		894
Finished goods		754		626
Inventories, net		1,675		1,520