Inventories (Tables)

3 Months Ended

Mar. 31, 2013

Inventories [Abstract]

Inventories on a FIFO basis

Inventories at March 31, 2013 and December 31, 2012, on a FIFO basis, were as follows:

	March 31, 2013		December 31, 2012
Raw materials	$	15,168	$	15,731
Work in process		13,893		13,168
Finished manufactured goods		28,392		32,293
Total inventories	$	57,453	$	61,192