Inventories (Tables)

6 Months Ended

Jun. 30, 2014

Inventory Disclosure [Abstract]

Schedule of Inventory, Current [Table Text Block]

Inventories consist of the following:

	June 30, 2014		December 31, 2013
Raw materials	$	55,369	$	60,157
Finished products	95,071		108,334
Spare parts	13,858		12,976
	$	164,298	$	181,467