Segment Reporting (Details) $ in Millions	3 Months Ended
	Mar. 31, 2020 USD ($) segment	Mar. 31, 2019 USD ($)	Dec. 31, 2019 USD ($)
Segment Reporting
Number of reportable segments | segment	3
Revenues	$ 81.0	$ 88.3
Total cost of services	63.1	67.5
Depreciation and amortization	8.9	8.4
Operating income	4.0	5.2
Interest expense, net	1.1	1.3
Net income	2.8	3.6
Capital expenditures	6.0	9.2
Property and equipment, net	216.1		$ 218.9
Total assets	296.3		293.5
Operating Segments | High specification rigs
Segment Reporting
Revenues	34.9	31.7
Total cost of services	29.9	27.4
Depreciation and amortization	5.3	4.8
Operating income	(0.3)	(0.5)
Interest expense, net	0.0	0.0
Net income	(0.3)	(0.5)
Capital expenditures	4.6	2.8
Property and equipment, net	132.8		132.2
Total assets	191.6		186.1
Operating Segments | Completion and other services
Segment Reporting
Revenues	43.3	51.6
Total cost of services	31.7	37.9
Depreciation and amortization	2.7	2.8
Operating income	8.9	10.9
Interest expense, net	0.0	0.0
Net income	8.9	10.9
Capital expenditures	1.2	1.8
Property and equipment, net	38.1		40.8
Total assets	55.1		57.4
Operating Segments | Processing Solutions
Segment Reporting
Revenues	2.8	5.0
Total cost of services	1.5	2.2
Depreciation and amortization	0.6	0.5
Operating income	0.7	2.3
Interest expense, net	0.0	0.0
Net income	0.7	2.3
Capital expenditures	0.2	4.1
Property and equipment, net	40.0		40.5
Total assets	42.0		42.6
Segment Reconciling Items
Segment Reporting
Revenues	0.0	0.0
Total cost of services	0.0	0.0
Depreciation and amortization	0.3	0.3
Operating income	(5.3)	(7.5)
Interest expense, net	1.1	1.3
Net income	(6.5)	(9.1)
Capital expenditures	0.0	$ 0.5
Property and equipment, net	5.2		5.4
Total assets	$ 7.6		$ 7.4