Inventories (Tables)

6 Months Ended

Jun. 30, 2012

Schedule of Inventory, Current [Table Text Block]

	June 30, 2012	December 31, 2011
Raw materials	$       2,850	$      4,135
Work in progress	3,059	3,790
Finished goods	2,496	2,363
Inventories	$       8,405	$    10,288