Inventories Schedule of Inventories (Tables)

12 Months Ended

Dec. 31, 2011

Inventory Disclosure [Abstract]

Schedule of Inventory, Current [Table Text Block]

Inventories at December 31, 2011 and 2010, consisted of the following (in thousands):

	2011		2010
Finished goods	$	38,095	$	30,780
Work-in-process	6,047		7,012
Raw materials	25,769		22,805
Total	$	69,911	$	60,597