Inventories (Tables)

12 Months Ended

Dec. 31, 2017

Inventory Disclosure [Abstract]

Schedule Of Major Components Of Inventories

The major components of inventories were as follows:

	December 31,
	2017		2016
Petroleum products	$	8,731	$	11,550
Crude oil	29,873		73,133
Caustic soda	5,755		4,593
NaHS	8,277		9,304
Raw materials - Alkali Operations	4,550		—
Work-in-process - Alkali Operations	7,355		—
Finished goods, net - Alkali Operations	14,075		—
Materials and supplies, net - Alkali Operations	10,030		—
Other	7		7
Total	$	88,653	$	98,587