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Revenue Recognition (Tables)

12 Months Ended

Dec. 31, 2018

Revenue Recognition

Disaggregation of revenue by type of service

The following table disaggregates our revenue by type of service (in thousands): 

		Year Ended December 31,
		2018			2017 (1)			2016 (1)
Contract operations revenue		$	563,416		$	266,130		$	255,560
Retail parts and services revenue			20,936			10,541			8,377
Total revenues		$	584,352		$	276,671		$	263,937

As noted above, prior period amounts have not been adjusted under the modified retrospective method of ASC Topic 606.

Disaggregation of revenue by timing of transfer of services

The following table disaggregates our revenue by timing of provision of services or transfer of goods (in thousands):

		Year Ended December 31,
		2018			2017 (1)			2016 (1)
Services provided or goods transferred at a point in time		$	20,936		$	10,541		$	8,377
Services provided over time:
Primary term			288,299			128,864			158,313
Month-to-month			275,117			137,266			97,247
Total revenues		$	584,352		$	276,671		$	263,937

As noted above, prior period amounts have not been adjusted under the modified retrospective method of ASC Topic 606.

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- Definition

Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130545-203045

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- Definition

Tabular disclosure of disaggregation of revenue by type of service.

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