Inventories

3 Months Ended

Mar. 31, 2017

Inventory Disclosure [Abstract]

Inventories

Inventories:

The following table provides a breakdown of inventories at March 31, 2017 and December 31, 2016 (in thousands):

	March 31,		December 31,
	2017		2016
Finished goods	$	345,892	$	289,102
Raw materials and work in process(a)	120,759		109,706
Stores, supplies and other	52,285		51,455
Total inventories	$	518,936	$	450,263

(a) Included $50.1 million and $47.1 million at March 31, 2017 and December 31, 2016, respectively, of work in process related to the Lithium product category.