Inventory (Tables)

9 Months Ended

Sep. 30, 2011

Inventory Disclosure [Abstract]

Schedule of Inventory, Current [Table Text Block]

The major classes of inventory were as follows:

Inventory	September 30, 2011		December 31, 2010
	(in thousands)
Raw materials	$	8,079	$	9,801
Work-in-progress	16,217		7,183
Finished goods	6,130		8,359
Total	$	30,426	$	25,343