Discontinued Operations and Assets Held for Sale (Tables)

3 Months Ended

Mar. 31, 2018

Discontinued Operations and Assets Held for Sale [Abstract]

Results of Operations Associated with Discontinued Operations

	Three Months
	Ended March 31,
(Thousands of dollars)		2018	2017
Revenues	$	–	129
Income (loss) before income taxes		(437)	969
Income tax benefit		–	–
Income (loss) from discontinued operations	$	(437)	969

Major Categories of Assets and Liabilities Reflected as Held for Sale

		March 31,	December 31,
(Thousands of dollars)		2018	2017
Current assets
Cash	$	16,380	16,631
Accounts receivable		6,316	6,298
Total current assets held for sale	$	22,696	22,929
Current liabilities
Accounts payable	$	467	837
Refinery decommissioning cost		2,693	2,693
Total current liabilities associated with assets held for sale	$	3,160	3,530