Inventories (Tables)

9 Months Ended

Sep. 30, 2013

Inventory Disclosure [Abstract]

Inventories

Inventories were comprised of the following:

	September 30, 2013		December 31, 2012
Raw materials	$	19,122	$	22,514
Work-in-process		34,356		31,164
Finished goods		8,131		5,907
Supplies		11,420		11,084
	$	73,029	$	70,669