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Segments | 9 Months Ended
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Sep. 30, 2020
Segment Reporting [Abstract] |
Segments | 22. Segments We manage our business segments primarily based on the type of product or service provided. We have two segments which we operate within the U.S.: contract operations and aftermarket services. The contract operations segment primarily provides natural gas compression services to meet specific customer requirements. The aftermarket services segment provides a full range of services to support the compression needs of customers, from parts sales and normal maintenance services to full operation of a customer’s owned assets. We evaluate the performance of our segments based on gross margin for each segment. Revenue includes only sales to external customers. The following table presents revenue and gross margin by segment during the three and nine months ended September 30, 2020 and 2019 (in thousands):
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Contract |  | Aftermarket |  | ​ | ​
​ |  | Operations |  | Services |  | Total
Three months ended September 30, 2020 |  | ​ |  |  | ​ |  |  | ​ |
Revenue | ​ | $ | 175,223 | ​ | $ | 30,408 | ​ | $ | 205,631
Gross margin | ​ |  | 114,779 | ​ |  | 4,699 | ​ |  | 119,478
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Three months ended September 30, 2019 | ​ |  |  | ​ |  |  | ​ |  |
Revenue | ​ | $ | 198,337 | ​ | $ | 46,612 | ​ | $ | 244,949
Gross margin | ​ |  | 122,396 | ​ |  | 8,987 | ​ |  | 131,383
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Nine months ended September 30, 2020 | ​ |  |  | ​ |  |  | ​ |  |
Revenue | ​ | $ | 570,146 | ​ | $ | 105,498 | ​ | $ | 675,644
Gross margin | ​ |  | 367,661 | ​ |  | 16,112 | ​ |  | 383,773
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Nine months ended September 30, 2019 | ​ |  |  | ​ |  |  | ​ |  |
Revenue | ​ | $ | 567,102 | ​ | $ | 152,396 | ​ | $ | 719,498
Gross margin | ​ |  | 345,905 | ​ |  | 28,654 | ​ |  | 374,559
​ The following table reconciles total gross margin to income (loss) before income taxes (in thousands):
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended |  | Nine Months Ended
​ | ​ | September 30, | ​ | September 30,
​ |  | 2020 |  | 2019 |  | 2020 |  | 2019
Total gross margin | ​ | $ | 119,478 | ​ | $ | 131,383 | ​ | $ | 383,773 | ​ | $ | 374,559
Less: | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |
Selling, general and administrative | ​ |  | 18,681 | ​ |  | 29,526 | ​ |  | 78,052 | ​ |  | 87,133
Depreciation and amortization | ​ |  | 47,279 | ​ |  | 48,409 | ​ |  | 145,950 | ​ |  | 137,997
Long-lived and other asset impairment | ​ |  | 10,727 | ​ |  | 7,097 | ​ |  | 72,132 | ​ |  | 18,821
Goodwill impairment | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 99,830 | ​ | ​ | —
Restatement and other charges | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | 445
Restructuring charges | ​ | ​ | 2,900 | ​ | ​ | — | ​ | ​ | 7,036 | ​ | ​ | —
Interest expense | ​ |  | 25,221 | ​ |  | 27,401 | ​ |  | 80,664 | ​ |  | 76,972
Debt extinguishment loss | ​ |  | — | ​ |  | — | ​ |  | 3,971 | ​ |  | 3,653
Transaction-related costs | ​ |  | — | ​ |  | 4,905 | ​ |  | — | ​ |  | 7,772
Gain on sale of assets, net | ​ | ​ | (9,146) | ​ | ​ | (7,859) | ​ | ​ | (11,073) | ​ | ​ | (9,644)
Other (income) loss, net | ​ |  | (324) | ​ |  | 49 | ​ |  | (1,317) | ​ |  | (381)
Income (loss) before income taxes | ​ | $ | 24,140 | ​ | $ | 21,855 | ​ | $ | (91,472) | ​ | $ | 51,791
​

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- Definition The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 31 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8924-108599 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 34 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8981-108599 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8721-108599 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 40 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e9031-108599 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8933-108599 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8933-108599 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 26 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8844-108599 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e9038-108599 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8933-108599 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8736-108599 Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 42 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e9054-108599 Reference 12: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8657-108599 Reference 13: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8721-108599 Reference 14: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -URI http://asc.fasb.org/topic&trid=2134510 + Details
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