Goodwill (Tables)

3 Months Ended

Mar. 31, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill

The changes in the carrying amount of goodwill from December 31, 2019 to March 31, 2020 were as follows:        

	(Thousands of Dollars)
Goodwill as of December 31, 2019	137,458
Disposition of Well Support Services reporting unit	(660		)
Impairment expense	(32,600		)
Goodwill as of March 31, 2020	$	104,198