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BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 3) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2012 | Sep. 30, 2011 | Sep. 30, 2012 | Sep. 30, 2011
Summary of income (loss) attributable to Exterran stockholders |  |  |  |
Income (loss) from continuing operations attributable to Exterran stockholders | $ 2,450 | $ (212,738) | $ (100,610) | $ (264,783)
Income (loss) from discontinued operations, net of tax | 110,916 | (3,236) | 66,863 | (9,247)
Net income (loss) attributable to Exterran stockholders | $ 113,366 | $ (215,974) | $ (33,747) | $ (274,030)
Potential shares of common stock included in computing diluted income (loss) attributable to Exterran stockholders per common share |  |  |  |
Weighted average common shares outstanding - used in basic income (loss) per common share | 64,847 | 62,728 | 63,384 | 62,583
Net dilutive potential common shares issuable: |  |  |  |
On exercise of options and vesting of restricted stock units (in shares) | 239 |  |  |
On settlement of employee stock purchase plan shares (in shares) | 8 |  |  |
Weighted average common shares outstanding - used in diluted income (loss) per common share | 65,094 | 62,728 | 63,384 | 62,583
Anti-dilutive effect of the calculation of net dilutive potential shares of common stock issuable |  |  |  |
Net dilutive potential common shares issuable | 32,219 | 34,665 | 34,353 | 33,787
On exercise of options where exercise price is greater than average market value for the period |  |  |  |
Anti-dilutive effect of the calculation of net dilutive potential shares of common stock issuable |  |  |  |
Net dilutive potential common shares issuable | 1,345 | 3,209 | 2,042 | 2,287
On exercise of options and vesting of restricted stock and restricted stock units |  |  |  |
Anti-dilutive effect of the calculation of net dilutive potential shares of common stock issuable |  |  |  |
Net dilutive potential common shares issuable |  | 546 | 1,426 | 605
On settlement of employee stock purchase plan shares |  |  |  |
Anti-dilutive effect of the calculation of net dilutive potential shares of common stock issuable |  |  |  |
Net dilutive potential common shares issuable |  | 35 | 11 | 20
On exercise of warrants |  |  |  |
Anti-dilutive effect of the calculation of net dilutive potential shares of common stock issuable |  |  |  |
Net dilutive potential common shares issuable | 12,426 | 12,426 | 12,426 | 12,426
On conversion of 4.25% convertible senior notes due 2014 |  |  |  |
Anti-dilutive effect of the calculation of net dilutive potential shares of common stock issuable |  |  |  |
Net dilutive potential common shares issuable | 15,334 | 15,334 | 15,334 | 15,334
Interest rate (as a percent) | 4.25% | 4.25% | 4.25% | 4.25%
On conversion of 4.75% convertible senior notes due 2014 |  |  |  |
Anti-dilutive effect of the calculation of net dilutive potential shares of common stock issuable |  |  |  |
Net dilutive potential common shares issuable | 3,114 | 3,115 | 3,114 | 3,115
Interest rate (as a percent) | 4.75% | 4.75% | 4.75% | 4.75%

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