Inventories (Tables)

3 Months Ended

Mar. 31, 2013

Inventory Disclosure [Abstract]

Schedule of Inventory, Current [Table Text Block]

Inventories consisted of the following at March 31, 2013 and December 31, 2012, respectively (in thousands):

	2013		2012
Finished goods	$	33,085	$	37,823
Work-in-process		2,945		3,809
Raw materials		30,365		26,363
	$	66,395	$	67,995