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Net Income (Loss) Per Share | 9 Months Ended
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Sep. 30, 2016
Earnings Per Share [Abstract] |
NET INCOME (LOSS) PER SHARE | NET INCOME (LOSS) PER SHARE Basic net income (loss) per share is computed by dividing net income (loss) available to common stockholders by the weighted average number of common shares outstanding during the period. Diluted net income (loss) per share reflects the potential dilution that would occur if securities or other contracts to issue common stock were exercised or converted into common stock. For the three and nine months ended September 30, 2016 and 2015, 215,298 and 3,302,701 shares and 404,543 and 3,251,347 shares, respectively, of common stock equivalents related to equity-based awards were not included in the diluted per share calculation as the shares would be antidilutive. The 3.25% Convertible Senior Notes (“Convertible Notes”) were not included in the computation of diluted net income (loss) per share for the three and nine months ended September 30, 2016 and 2015 because there is no excess value upon conversion over the principal amount of the Convertible Notes. The outstanding Convertible Notes were redeemed in the third quarter of 2016.
| Three months ended September 30, |  | Nine months ended September 30,
In thousands except per share amounts | 2016 |  | 2015 |  | 2016 |  | 2015
Net income (loss) available to common stockholders | $ | 69,557 |  |  | $ | (14,219 | ) |  | $ | 63,660 |  |  | $ | (64,185 | )
Weighted average shares: |  |  |  |  |  |  |
Basic | 161,039 |  |  | 135,247 |  |  | 155,108 |  |  | 124,478 |
Effect of stock-based compensation plans | 4,789 |  |  | — |  |  | 3,284 |  |  | — |
Diluted | 165,828 |  |  | 135,247 |  |  | 158,392 |  |  | 124,478 |
Income (loss) per share: |  |  |  |  |  |  |
Basic | $ | 0.43 |  |  | $ | (0.11 | ) |  | $ | 0.41 |  |  | $ | (0.52 | )
Diluted | $ | 0.42 |  |  | $ | (0.11 | ) |  | $ | 0.40 |  |  | $ | (0.52 | )
During the second quarter 2016, the Company completed a $75.0 million “at the market” stock offering (“$75.0 million offering”). In connection with the $75.0 million offering, the Company sold 9,253,016 shares of its common stock at an average price of $8.11 per share. Pursuant to an equity distribution agreement dated September 9, 2016, the Company may issue and sell shares of its common stock from time to time through ordinary broker transactions having an aggregate offering price of up to $200.0 million, with the net proceeds available for repayment of indebtedness and other general corporate purposes. The terms of sales transactions under the agreement, including trading day(s), number of shares sold in the aggregate, number of shares sold per trading day, and the floor selling price per share, are proposed by the Company to the sales agents. Whether or not the Company engages in sales from time to time may depend on a variety of factors, including share price, our cash resources, customary black-out restrictions, and whether we have any material nonpublic information. The agreement can be terminated by the Company at any time, and the Company has initially authorized sales under the agreement through no later than June 30, 2017. The shares issued under the equity distribution agreement are registered under the Securities Act of 1933, as amended, pursuant to the Company's shelf registration statement on Form S-3, which was filed with the SEC on March 29, 2016. At September 30, 2016, the Company had sold 4,293,785 shares under the agreement for net proceeds of approximately $53.4 million, net of commissions and fees of approximately $1.2 million.

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