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EARNINGS PER COMMON SHARE | 9 Months Ended
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Sep. 30, 2018
EARNINGS PER COMMON SHARE |
EARNINGS PER COMMON SHARE | 11. EARNINGS PER COMMON SHARE The following represents the calculation of earnings (loss) per share (in thousands, except per share amounts):
|  | Three Months Ended |  | Nine Months Ended
|  | September 30, |  | September 30,
|  | 2018 |  | 2017 |  | 2018 |  | 2017
Basic: |  |  |  |  |  |  |  |  |  |  |  |
Net income (loss) available to common stockholders |  | $ | (81,837) |  | $ | 419,287 |  | $ | (100,709) |  | $ | 580,809
Weighted average basic number of common shares outstanding |  |  | 158,011 |  |  | 146,944 |  |  | 156,628 |  |  | 127,458
Basic net income (loss) per share of common stock |  | $ | (0.52) |  | $ | 2.85 |  | $ | (0.64) |  | $ | 4.56
Diluted: |  |  |  |  |  |  |  |  |  |  |  |
Net income (loss) available to common stockholders |  | $ | (81,837) |  | $ | 419,287 |  | $ | (100,709) |  | $ | 580,809
Weighted average basic number of common shares outstanding |  |  | 158,011 |  |  | 146,944 |  |  | 156,628 |  |  | 127,458
Common stock equivalent shares representing shares issuable upon: |  |  |  |  |  |  |  |  |  |  |  |
Exercise of stock options |  |  | Anti-dilutive |  |  | Anti-dilutive |  |  | Anti-dilutive |  |  | Anti-dilutive
Exercise of warrants |  |  | Anti-dilutive |  |  | Anti-dilutive |  |  | Anti-dilutive |  |  | Anti-dilutive
Vesting of restricted shares |  |  | Anti-dilutive |  |  | 1,546 |  |  | Anti-dilutive |  |  | 952
Conversion of preferred stock |  |  | — |  |  | — |  |  | — |  |  | Anti-dilutive
Weighted average diluted number of common shares outstanding |  |  | 158,011 |  |  | 148,490 |  |  | 156,628 |  |  | 128,410
Diluted net income (loss) per share of common stock |  | $ | (0.52) |  | $ | 2.82 |  | $ | (0.64) |  | $ | 4.52
Common stock equivalents, including stock options, restricted shares, and warrants totaling 14.9 million and 14.3 million shares for the three and nine months ended September 30, 2018, respectively, were not included in the computation of diluted earnings per share of common stock because the effect would have been anti-dilutive due to the net losses. Common stock equivalents, including stock options, restricted shares, warrants, and preferred stock totaling 11.7 million and 19.0 million shares for the three and nine months ended September 30, 2017, respectively, were not included in the computation of diluted earnings per share of common stock because the effect would have been anti-dilutive.

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 + Details
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