Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Disaggregation of Revenue [Line Items]
Lease and other revenue	$ 12,065	$ 10,731
Revenue	261,434	300,494
United States
Disaggregation of Revenue [Line Items]
Revenue	195,370	231,358
Canada
Disaggregation of Revenue [Line Items]
Revenue	17,952	18,915
Middle East
Disaggregation of Revenue [Line Items]
Revenue	12,363	13,604
Europe
Disaggregation of Revenue [Line Items]
Revenue	12,030	16,959
Australia
Disaggregation of Revenue [Line Items]
Revenue	9,268	5,982
Latin America
Disaggregation of Revenue [Line Items]
Revenue	7,582	7,722
Asia-Pacific
Disaggregation of Revenue [Line Items]
Revenue	5,486	5,545
Other [Member]
Disaggregation of Revenue [Line Items]
Revenue	1,383	409
Product revenue
Disaggregation of Revenue [Line Items]
Revenue	230,882	269,342
Service revenue
Disaggregation of Revenue [Line Items]
Revenue	18,487	20,421
Drilling Technologies
Disaggregation of Revenue [Line Items]
Revenue	55,955	77,535
Production & Automation Technologies
Disaggregation of Revenue [Line Items]
Revenue	205,479	222,959
Production & Automation Technologies \| Intra-segment eliminations
Disaggregation of Revenue [Line Items]
Revenue	(102)	(243)
Production & Automation Technologies \| Artificial lift
Disaggregation of Revenue [Line Items]
Revenue	159,400	170,907
Production & Automation Technologies \| Digital products
Disaggregation of Revenue [Line Items]
Revenue	33,922	31,290
Production & Automation Technologies \| Other production equipment
Disaggregation of Revenue [Line Items]
Revenue	$ 12,259	$ 21,005

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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- Definition

Amount of operating lease income from lease payments and variable lease payments paid and payable to lessor. Includes, but is not limited to, variable lease payments not included in measurement of lease receivable.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 30
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=119202524&loc=SL77919372-209981

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 30
-Section 45
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-URI http://asc.fasb.org/extlink&oid=77888421&loc=SL77919311-209978

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 270
-SubTopic 10
-Section 50
-Paragraph 6A
-URI http://asc.fasb.org/extlink&oid=118952077&loc=SL77927221-108306

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- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130543-203045

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
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-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045

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- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
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-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
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-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8933-108599

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
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-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
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-URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227

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