Inventories (Tables)

3 Months Ended

Mar. 31, 2014

Inventories [Abstract]

Inventories on a FIFO basis

Inventories at March 31, 2014 and December 31, 2013, on a FIFO basis, were as follows:

	March 31, 2014		December 31, 2013
Raw materials	$	8,807	$	7,483
Work in process		12,124		12,996
Finished manufactured goods		24,378		18,850
Total inventories	$	45,309	$	39,329