Summary of inventories is as follows (In thousands) (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
Summary of inventories is as follows
Raw materials	$ 14,020	$ 12,852
Work in progress	1,917	1,866
Finished goods	3,720	5,306
Supplies	1,032	1,034
Total Inventories	20,689	21,058
Inventory reserve	(286)	(305)
Net Inventories	$ 20,403	$ 20,753