Segment Reporting (Details) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020 USD ($)	Sep. 30, 2019 USD ($)	Sep. 30, 2020 USD ($) segment	Sep. 30, 2019 USD ($)	Dec. 31, 2019 USD ($)
Segment Reporting
Number of reportable segments | segment			3
Revenues	$ 34.6	$ 84.1	$ 146.3	$ 256.7
Cost of services	26.6	66.7	113.5	199.8
Depreciation and amortization	8.4	9.1	26.8	25.9
Operating income (loss)	(5.0)	1.6	(9.1)	10.8
Interest expense, net	0.8	1.4	2.7	4.6
Tax expense (benefit)	(0.1)	1.1	0.0	1.7
Net income (loss)	(5.7)	(0.9)	(11.8)	4.5
Capital expenditures	0.6	4.9	7.3	19.5
Property and equipment, net	197.9		197.9		$ 218.9
Total assets	241.4		241.4		293.5
Operating Segments | High specification rigs
Segment Reporting
Revenues	14.5	32.5	60.8	97.3
Cost of services	12.3	29.3	52.3	85.4
Depreciation and amortization	4.6	5.3	15.1	14.9
Operating income (loss)	(2.4)	(2.1)	(6.6)	(3.0)
Interest expense, net	0.0	0.0	0.0	0.0
Net income (loss)	(2.4)	(2.1)	(6.6)	(3.0)
Capital expenditures	0.2	3.2	4.5	7.2
Property and equipment, net	120.9		120.9		132.2
Total assets	153.5		153.5		186.1
Operating Segments | Completion and other services
Segment Reporting
Revenues	18.9	45.3	79.9	143.2
Cost of services	14.0	34.6	59.0	107.5
Depreciation and amortization	2.7	2.9	8.0	8.6
Operating income (loss)	2.2	7.8	12.9	27.1
Interest expense, net	0.0	0.0	0.0	0.0
Net income (loss)	2.2	7.8	12.9	27.1
Capital expenditures	0.3	0.5	2.0	4.1
Property and equipment, net	33.3		33.3		40.8
Total assets	42.3		42.3		57.4
Operating Segments | Processing Solutions
Segment Reporting
Revenues	1.2	6.3	5.6	16.2
Cost of services	0.3	2.8	2.2	6.9
Depreciation and amortization	0.7	0.6	2.6	1.6
Operating income (loss)	0.2	2.9	0.8	7.7
Interest expense, net	0.0	0.0	0.0	0.0
Net income (loss)	0.2	2.9	0.8	7.7
Capital expenditures	0.1	1.2	0.5	7.7
Property and equipment, net	38.4		38.4		40.5
Total assets	38.9		38.9		42.6
Segment Reconciling Items
Segment Reporting
Revenues	0.0	0.0	0.0	0.0
Cost of services	0.0	0.0	0.0	0.0
Depreciation and amortization	0.4	0.3	1.1	0.8
Operating income (loss)	(5.0)	(7.0)	(16.2)	(21.0)
Interest expense, net	0.8	1.4	2.7	4.6
Net income (loss)	(5.7)	(9.5)	(18.9)	(27.3)
Capital expenditures	0.0	$ 0.0	0.3	$ 0.5
Property and equipment, net	5.3		5.3		5.4
Total assets	$ 6.7		$ 6.7		$ 7.4