Sales by Product (Tables)

12 Months Ended

Dec. 31, 2015

Revenue Recognition [Abstract]

Revenue from External Customers by Products and Services

Revenues from sales by product for the years ended December 31, 2015 and 2014 are as follows (in thousands):

Product		2015			2014
ALUPREM	$	13,319	36%	$	18,516	39%
HITOX		10,392	28%		13,265	28%
BARTEX / BARYPREM		8,417	23%		8,848	20%
HALTEX / OPTILOAD		3,462	9%		3,182	7%
TIOPREM		718	2%		856	2%
SR		14	<1%		1,365	3%
OTHER		737	2%		698	1%
Total	$	37,059	100%	$	46,730	100%