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Segment Information - Disaggregation of Revenue by Geography (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Disaggregation of Revenue [Line Items]
Revenue	$ 139,441	$ 140,417	$ 155,654	$ 144,408	$ 145,853	$ 128,986	$ 132,085	$ 115,569	$ 579,920	$ 522,493	$ 454,795
Tubular Running Services
Disaggregation of Revenue [Line Items]
Revenue									400,327	361,045	320,378
Tubulars
Disaggregation of Revenue [Line Items]
Revenue									74,687	72,303	63,393
Cementing Equipment
Disaggregation of Revenue [Line Items]
Revenue									104,906	89,145	71,024
United States
Disaggregation of Revenue [Line Items]
Revenue									293,172	280,595	244,684
United States | Tubular Running Services
Disaggregation of Revenue [Line Items]
Revenue									147,547	142,262	116,795
United States | Tubulars
Disaggregation of Revenue [Line Items]
Revenue									63,087	66,017	57,882
United States | Cementing Equipment
Disaggregation of Revenue [Line Items]
Revenue									82,538	72,316	70,007
International
Disaggregation of Revenue [Line Items]
Revenue									286,748	241,898	210,111
International | Tubular Running Services
Disaggregation of Revenue [Line Items]
Revenue									252,780	218,783	203,583
International | Tubulars
Disaggregation of Revenue [Line Items]
Revenue									11,600	6,286	5,511
International | Cementing Equipment
Disaggregation of Revenue [Line Items]
Revenue									22,368	16,829	1,017
Europe/Middle East/Africa
Disaggregation of Revenue [Line Items]
Revenue									155,278	127,968	132,768
Latin America
Disaggregation of Revenue [Line Items]
Revenue									72,720	46,553	33,131
Asia Pacific
Disaggregation of Revenue [Line Items]
Revenue									35,909	35,327	26,109
Other countries
Disaggregation of Revenue [Line Items]
Revenue									$ 22,841	$ 32,050	$ 18,103

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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
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045

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