XML 54 R36.htm IDEA: XBRL DOCUMENT
v3.10.0.1

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.

X
- 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 + Details
Name: | us-gaap_DisaggregationOfRevenueTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_RevenueFromContractWithCustomerAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of disaggregation of revenue by type of service. + References No definition available. + Details
Name: | usac_DisaggregationOfRevenueByTypeOfServiceTableTextBlock
Namespace Prefix: | usac_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration