Summary of Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2020

Accounting Policies [Abstract]

Schedule of disaggregated revenue

Revenue activities during the three months ended March 31, 2020 and 2019 were as follows:

	Three Months Ended March 31, 2020
	(Thousands of Dollars)
	Completion Services		WC&I		Well Support Services		Total
Geography
Northeast	$	77,425	$	7,630	$	—	$	85,055
Central	76,831		6,900		—		83,731
West Texas	264,499		33,632		8,373		306,504
West	83,687		8,663		49,556		141,906
International	10,429		—		—		10,429
	$	512,871	$	56,825	$	57,929	$	627,625

	Three Months Ended March 31, 2019
	(Thousands of Dollars)
	Completion Services		WC&I		Well Support Services		Total
Geography
Northeast	$	154,866	$	—	$	—	$	154,866
Central	11,115		—		—		11,115
West Texas	190,552		3,841		—		194,393
West	55,442		5,838		—		61,280
	$	411,975	$	9,679	$	—	$	421,654

Schedule of property and equipment

Major classifications of property and equipment and their respective useful lives are as follows:

Land	Indefinite life
Building and leasehold improvements	13 months – 40 years
Machinery and equipment	13 months – 10 years
Office furniture, fixtures and equipment	3 years – 5 years