Assets Held for Sale and Discontinued Operations (Tables)

9 Months Ended

Sep. 30, 2021

Discontinued Operations and Disposal Groups [Abstract]

Results of Operations Associated with Discontinued Operations

The results of operations associated with discontinued operations for the three-month and nine-month periods ended September 30, 2021 and 2020 were as follows:

	Three Months Ended September 30,			Nine Months Ended September 30,
(Thousands of dollars)	2021		2020	2021		2020
Revenues	$	144	—	$	801	4,074
Costs and expenses
Other costs and expenses (benefits)	850		778	1,401		10,981
(Loss) income before taxes	(706)		(778)	(600)		(6,907)
Income tax expense	—		—	—		—
(Loss) income from discontinued operations	$	(706)	(778)	$	(600)	(6,907)

Major Categories of Assets and Liabilities Reflected as Held for Sale

(Thousands of dollars)	September 30, 2021		December 31, 2020
Current assets
Cash	$	—	10,185
Inventories	—		406
Property, plant, and equipment, net	40,987		307,704
Deferred income taxes and other assets	—		9,441
Total current assets associated with assets held for sale	$	40,987	327,736
Current liabilities
Accounts payable	$	—	5,306
Other accrued liabilities	—		45
Current maturities of long-term debt (finance lease)	—		737
Taxes payable	—		1,510
Long-term debt (finance lease)	—		6,513
Asset retirement obligation	—		261
Total current liabilities associated with assets held for sale	$	—	14,372