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Earnings per Share (Tables) | 9 Months Ended
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Sep. 30, 2018
Earnings Per Share [Abstract] |
Summary of net income (loss) attributable to Archrock common stockholders used in the calculation of basic and diluted income (loss) per common share | The following table summarizes net income (loss) attributable to Archrock common stockholders used in the calculation of basic and diluted loss per common share (in thousands):
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2018 |  | 2017 |  | 2018 |  | 2017
Income (loss) from continuing operations attributable to Archrock stockholders | $ | 9,974 |  |  | $ | (10,181 | ) |  | $ | 8,095 |  |  | $ | (28,553 | )
Loss from discontinued operations, net of tax | — |  |  | (54 | ) |  | — |  |  | (54 | )
Net income (loss) attributable to Archrock stockholders | 9,974 |  |  | (10,235 | ) |  | 8,095 |  |  | (28,607 | )
Less: Net income attributable to participating securities | (241 | ) |  | (179 | ) |  | (554 | ) |  | (513 | )
Net income (loss) attributable to Archrock common stockholders | $ | 9,733 |  |  | $ | (10,414 | ) |  | $ | 7,541 |  |  | $ | (29,120 | )
Schedule of potential shares of common stock that were included in computing diluted income (loss) attributable to Archrock common stockholders per common share | The following table shows the potential shares of common stock that were included in computing diluted income (loss) attributable to Archrock common stockholders per common share (in thousands):
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2018 |  | 2017 |  | 2018 |  | 2017
Weighted average common shares outstanding including participating securities | 129,486 |  |  | 70,952 |  |  | 104,489 |  |  | 70,847 |
Less: Weighted average participating securities outstanding | (1,644 | ) |  | (1,308 | ) |  | (1,576 | ) |  | (1,327 | )
Weighted average common shares outstanding — used in basic income (loss) per common share | 127,842 |  |  | 69,644 |  |  | 102,913 |  |  | 69,520 |
Net dilutive potential common shares issuable: |  |  |  |  |  |  |
On exercise of options | 111 |  |  | * |  |  | 96 |  |  | * |
On the settlement of employee stock purchase plan shares | 2 |  |  | * |  |  | 4 |  |  | * |
Weighted average common shares outstanding — used in diluted income (loss) per common share | 127,955 |  |  | 69,644 |  |  | 103,013 |  |  | 69,520 |
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* | Excluded from diluted income (loss) per common share as their inclusion would have been anti-dilutive.
Schedule of potential shares of common stock issuable, excluded from computation of diluted income (loss), attributable to Archrock common stockholders per common share | The following table shows the potential shares of common stock issuable that were excluded from computing diluted income (loss) attributable to Archrock common stockholders per common share as their inclusion would have been anti-dilutive (in thousands):
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2018 |  | 2017 |  | 2018 |  | 2017
Net dilutive potential common shares issuable: |  |  |  |  |  |  |
On exercise of options where exercise price is greater than average market value for the period | 187 |  |  | 240 |  |  | 199 |  |  | 278 |
On exercise of options | — |  |  | 100 |  |  | — |  |  | 116 |
Net dilutive potential common shares issuable | 187 |  |  | 340 |  |  | 199 |  |  | 394 |

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- Definition Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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- Definition Tabular disclosure of the weighted average number of shares used in calculating basic net earnings per share (or unit) and diluted earnings per share (or unit). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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