Inventories (Tables)

3 Months Ended

Mar. 31, 2014

Inventory Disclosure [Abstract]

Schedule of Inventory, Current [Table Text Block]

The following table summarizes the components of inventory:

	March 31, 2014		December 31, 2013
Raw materials and supplies	$	95,208	$	93,014
Work in process	47,123		42,996
Finished goods	81,664		76,994
Total inventories, net	$	223,995	$	213,004