Inventories (Tables)

6 Months Ended

Jun. 30, 2013

Inventory Disclosure [Abstract]

Schedule of Inventory, Current [Table Text Block]

The components of inventory are as follows:

	June 30, 2013		December 31, 2012
Raw materials and supplies	$	86,908	$	85,726
Work in process	46,067		40,945
Finished goods	78,718		69,830
Total inventories, net	$	211,693	$	196,501

The allowance for excess and obsolete inventory balance at June 30, 2013 and December 31, 2012 was $5,568 and $4,078, respectively.