Segment Reporting (Details) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2020 USD ($) segment	Jun. 30, 2019 USD ($)	Dec. 31, 2019 USD ($)
Segment Reporting
Number of reportable segments | segment			3
Revenues	$ 30.7	$ 84.3	$ 111.7	$ 172.6
Cost of services	23.8	65.6	86.9	133.1
Depreciation and amortization	9.5	8.4	18.4	16.8
Operating income (loss)	(8.1)	4.0	(4.1)	9.2
Interest expense, net	0.8	1.9	1.9	3.2
Tax expense	0.0	0.3	0.1	0.6
Net income (loss)	(8.9)	1.8	(6.1)	5.4
Capital expenditures	0.7	5.4	6.7	14.6
Property and equipment, net	206.6		206.6		$ 218.9
Total assets	248.1		248.1		293.5
Operating Segments | High specification rigs
Segment Reporting
Revenues	11.4	33.1	46.3	64.8
Cost of services	10.1	28.7	40.0	56.1
Depreciation and amortization	5.2	4.8	10.5	9.6
Operating income (loss)	(3.9)	(0.4)	(4.2)	(0.9)
Interest expense, net	0.0	0.0	0.0	0.0
Net income (loss)	(3.9)	(0.4)	(4.2)	(0.9)
Capital expenditures	(0.3)	1.2	4.3	4.0
Property and equipment, net	125.7		125.7		132.2
Total assets	155.9		155.9		186.1
Operating Segments | Completion and other services
Segment Reporting
Revenues	17.7	46.3	61.0	97.9
Cost of services	13.3	35.0	45.0	72.9
Depreciation and amortization	2.6	2.9	5.3	5.7
Operating income (loss)	1.8	8.4	10.7	19.3
Interest expense, net	0.0	0.0	0.0	0.0
Net income (loss)	1.8	8.4	10.7	19.3
Capital expenditures	0.5	1.8	1.7	3.6
Property and equipment, net	36.6		36.6		40.8
Total assets	45.4		45.4		57.4
Operating Segments | Processing Solutions
Segment Reporting
Revenues	1.6	4.9	4.4	9.9
Cost of services	0.4	1.9	1.9	4.1
Depreciation and amortization	1.3	0.5	1.9	1.0
Operating income (loss)	(0.1)	2.5	0.6	4.8
Interest expense, net	0.0	0.0	0.0	0.0
Net income (loss)	(0.1)	2.5	0.6	4.8
Capital expenditures	0.2	2.4	0.4	6.5
Property and equipment, net	38.9		38.9		40.5
Total assets	40.1		40.1		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	0.2	0.7	0.5
Operating income (loss)	(5.9)	(6.5)	(11.2)	(14.0)
Interest expense, net	0.8	1.9	1.9	3.2
Net income (loss)	(6.7)	(8.7)	(13.2)	(17.8)
Capital expenditures	0.3	$ 0.0	0.3	$ 0.5
Property and equipment, net	5.4		5.4		5.4
Total assets	$ 6.7		$ 6.7		$ 7.4