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Coiled Tubing Units

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Well Servicing Rigs

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Wireline Units

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Amount of assets held-for-sale that are not part of a disposal group, expected to be sold within a year or the normal operating cycle, if longer.

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Amount of structure or a modification to a structure under construction. Includes recently completed structures or modifications to structures that have not been placed into service.

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Amount of gain (loss) on sale or disposal of property, plant and equipment assets, including oil and gas property and timber property.

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Amount of interest capitalized during the period.

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The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale.

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Amount of acquisition of long-lived, physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Property and Equipment (Details) $ in Thousands	12 Months Ended
Property and Equipment (Details) $ in Thousands	Dec. 31, 2018 USD ($) coiled_tubing_units well_service_rigs drilling_rigs wireline_tubing_units	Dec. 31, 2017 USD ($) coiled_tubing_units well_service_rigs drilling_rigs wireline_tubing_units	Dec. 31, 2016 USD ($) drilling_rigs
Property, Plant and Equipment [Line Items]
Capital Expenditures	$ 72,854	$ 61,447	$ 32,556
Interest Costs Capitalized	400	400	200
Gain on dispositions of property and equipment, net	3,121	3,608	1,892
Net property and equipment	524,858	549,623
Assets held for sale	3,582	6,620
Impairment	4,422	1,902	12,815
Proceeds from sale of property and equipment	5,864	12,569	7,577
Drilling Services [Member]
Property, Plant and Equipment [Line Items]
Capital Expenditures	$ 29,907	25,538	$ 19,796
Drilling Rigs \| drilling_rigs	24
Assets Disposed of by a Method Other than a Sale, Count \| drilling_rigs			1
Drilling Services [Member] \| Domestic Drilling [Member]
Property, Plant and Equipment [Line Items]
Capital Expenditures	$ 23,598	$ 19,219	$ 19,118
Drilling Services [Member] \| Domestic Drilling [Member] \| Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Drilling Rigs \| drilling_rigs	1
Drilling Services [Member] \| Domestic Drilling [Member] \| Installments, not yet in service [Member]
Property, Plant and Equipment [Line Items]
Construction in Progress, Gross	$ 8,000
Drilling Services [Member] \| Domestic Drilling [Member] \| Sold During the Period [Member] \| SCR Drilling Rigs [Member]
Property, Plant and Equipment [Line Items]
Drilling Rigs \| drilling_rigs			3
Drilling Services [Member] \| Domestic Drilling [Member] \| Deployed under new contract during current period [Member]
Property, Plant and Equipment [Line Items]
Drilling Rigs \| drilling_rigs	1
Drilling Services [Member] \| Domestic Drilling [Member] \| Drilling Rigs [Member] \| Mechanical and Lower Horsepower Drilling Rigs [Member]
Property, Plant and Equipment [Line Items]
Drilling Rigs \| drilling_rigs		1
Drilling Services [Member] \| Domestic Drilling [Member] \| Drilling Rigs [Member] \| SCR Drilling Rigs [Member]
Property, Plant and Equipment [Line Items]
Drilling Rigs \| drilling_rigs	2	3
Drilling Services [Member] \| Domestic Drilling [Member] \| Disposal Group, Held-for-sale, Not Discontinued Operations [Member] \| Sold During the Period [Member]
Property, Plant and Equipment [Line Items]
Drilling Rigs \| drilling_rigs	2
Drilling Services [Member] \| International Drilling [Member]
Property, Plant and Equipment [Line Items]
Capital Expenditures	$ 6,309	$ 6,319	$ 678
Drilling Services [Member] \| International Drilling [Member] \| Deployed under new contract during current period [Member]
Property, Plant and Equipment [Line Items]
Drilling Rigs \| drilling_rigs		1
Production Services [Member]
Property, Plant and Equipment [Line Items]
Capital Expenditures	41,807	$ 35,155	12,321
Assets Disposed of by a Method Other than a Sale, Count		3
Production Services [Member] \| Well Servicing [Member]
Property, Plant and Equipment [Line Items]
Capital Expenditures	$ 10,002	$ 17,776	5,274
Well Servicing Rigs \| well_service_rigs	125
Production Services [Member] \| Well Servicing [Member] \| Acquired during 2017 [Member]
Property, Plant and Equipment [Line Items]
Well Servicing Rigs \| well_service_rigs		20
Production Services [Member] \| Coiled Tubing Services [Member]
Property, Plant and Equipment [Line Items]
Capital Expenditures	$ 16,558	$ 5,496	3,548
Coiled Tubing Units \| coiled_tubing_units	9
Production Services [Member] \| Coiled Tubing Services [Member] \| Sold During the Period [Member]
Property, Plant and Equipment [Line Items]
Coiled Tubing Units \| coiled_tubing_units	5
Production Services [Member] \| Coiled Tubing Services [Member] \| Installments, not yet in service [Member]
Property, Plant and Equipment [Line Items]
Coiled Tubing Units \| coiled_tubing_units		1
Production Services [Member] \| Coiled Tubing Services [Member] \| Coiled Tubing Units [Member]
Property, Plant and Equipment [Line Items]
Coiled Tubing Units \| coiled_tubing_units	3	1
Production Services [Member] \| Wireline Services [Member]
Property, Plant and Equipment [Line Items]
Capital Expenditures	$ 15,247	$ 11,883	$ 3,499
Wireline Units \| wireline_tubing_units	105
Production Services [Member] \| Wireline Services [Member] \| Sold During the Period [Member]
Property, Plant and Equipment [Line Items]
Wireline Units \| wireline_tubing_units	12
Production Services [Member] \| Wireline Services [Member] \| Installments, not yet in service [Member]
Property, Plant and Equipment [Line Items]
Wireline Units \| wireline_tubing_units		3
Production Services [Member] \| Wireline Services [Member] \| Wireline Units [Member]
Property, Plant and Equipment [Line Items]
Wireline Units \| wireline_tubing_units		2