Inventories (Details Textual)	3 Months Ended	12 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Inventory [Line Items]
Percentage Of Fifo Inventory Non Current For Finished Goods	69.00%	66.00%
Inventory Related Text	Inventories are stated at the lower of cost, determined by the first-in, first-out (“FIFO”) method, or market.