Inventories (Tables)

6 Months Ended

Jun. 30, 2015

Inventory Disclosure [Abstract]

Schedule of Inventory, Current [Table Text Block]

Inventories consist of the following:

	June 30, 2015		December 31, 2014
Raw materials	$	52,480	$	60,697
Finished products	109,270		111,600
Spare parts	13,294		12,324
	$	175,044	$	184,621