TIORCO, LLC Joint Venture

12 Months Ended

Dec. 31, 2017

Equity Method Investments And Joint Ventures [Abstract]

TIORCO, LLC Joint Venture

25. TIORCO, LLC Joint Venture

In October 2015, the Company and its partner, Nalco Company (a subsidiary of Ecolab Inc.), made the decision to dissolve their equally owned and operated TIORCO, LLC (TIORCO) enhanced oil recovery joint venture. As a result of the dissolution, TIORCO incurred fourth quarter 2015 exit costs, which included termination pay, lease termination costs and asset impairments. The Company’s share of the exit costs was $2,356,000, which was reported in the ‘Loss from equity in joint venture’ line of the consolidated statement of income for the year ended December 31, 2015. The Company made a final cash investment of $2,900,000 to TIORCO during the three-month period ended March 31, 2016, to fund the exit costs and other final cash requirements for dissolving the joint venture. The legal dissolution of TIORCO is complete.