Sales by Product (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013
Product Information [Line Items]
Total Sales	$ 9,889	$ 11,317	$ 12,392	$ 13,132	$ 12,992	$ 10,870	$ 10,732	$ 11,427	$ 46,730	$ 46,021
Revenues from sales by product, percentage									100.00%	100.00%
Variance									709
Variance percentage									2.00%
ALUPREM [Member]
Product Information [Line Items]
Total Sales									18,516	14,662
Revenues from sales by product, percentage									39.00%	32.00%
Variance									3,854
Variance percentage									26.00%
HITOX [Member]
Product Information [Line Items]
Total Sales									13,265	14,004
Revenues from sales by product, percentage									28.00%	30.00%
Variance									(739)
Variance percentage									(5.00%)
BARTEX / BARYPREM [Member]
Product Information [Line Items]
Total Sales									8,848	7,882
Revenues from sales by product, percentage									20.00%	17.00%
Variance									966
Variance percentage									12.00%
HALTEX / OPTILOAD [Member]
Product Information [Line Items]
Total Sales									3,182	3,427
Revenues from sales by product, percentage									7.00%	8.00%
Variance									(245)
Variance percentage									(7.00%)
TIOPREM [Member]
Product Information [Line Items]
Total Sales									856	1,817
Revenues from sales by product, percentage									2.00%	4.00%
Variance									(961)
Variance percentage									(53.00%)
SR [Member]
Product Information [Line Items]
Total Sales									1,365	3,527
Revenues from sales by product, percentage									3.00%	8.00%
Variance									(2,162)
Variance percentage									(61.00%)
OTHER [Member]
Product Information [Line Items]
Total Sales									698	702
Revenues from sales by product, percentage									1.00%	1.00%
Variance									$ (4)
Variance percentage									(1.00%)