Discontinued Operations - Narrative (Details) - Discontinued Operations - Pressure Pumping Operations and Contract Drilling Operations - USD ($)	3 Months Ended			9 Months Ended
	Sep. 30, 2020	Mar. 31, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Carrying value, held for sale						$ 91,800,000
Impairment expense	$ 0	$ 2,300,000	$ 0	$ 2,330,000	$ 0
Capital expenditures				0	9,700,000
Finance lease additions				0	1,500,000
Proceeds from sales of assets				$ 41,100,000	$ 1,700,000