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NET INCOME LOSS PER SHARE | 9 Months Ended
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Sep. 30, 2022
Earnings Per Share [Abstract] |
Earnings Per Share, Policy [Policy Text Block] | 14. NET INCOME (LOSS) PER SHARE Our Series A-1 preferred stock and Series B preferred stock (collectively, the "preferred shares") were considered participating securities, and as a result, net income (loss) per share has historically been calculated using the two-class method. Under this method, we give effect to preferred dividends and then allocate remaining net income (loss) attributable to our stockholders to both common shares and participating securities (based on the percentages outstanding) in determining net income (loss) per common share. Basic net income (loss) per common share is computed by dividing net income (loss) attributable to common shares (after allocating between common shares and participating securities) by the weighted average number of common shares outstanding during the period. Diluted net income (loss) per share is computed by dividing net income (loss) attributable to common shares (after allocating between participating securities and common shares) by the weighted average number of common and potential common shares outstanding during the period (after allocating total dilutive shares between our common shares outstanding and our preferred shares outstanding). Potential common shares, comprising incremental common shares issuable from the employee stock purchase plan and restricted stock awards are included in the calculation of diluted net income (loss) per common share to the extent such shares are dilutive. The following table sets forth the computation of basic and diluted net income (loss) per common share for the periods indicated (in thousands, except per share data):
| Three months ended September 30, |  | Nine months ended September 30,
| 2022 |  | 2021 |  | 2022 |  | 2021
Numerator: |  |  |  |  |  |  |
Income (loss) from continuing operations | $ | (36,995) |  |  | $ | 30,426 |  |  | $ | (19,725) |  |  | $ | 138,849 |
Less: Preferred stock dividends—issued | — |  |  | 182 |  |  | 1,697 |  |  | 547 |
Undistributed income (loss) from continuing operations | (36,995) |  |  | 30,244 |  |  | (21,422) |  |  | 138,302 |
Less: Undistributed income (loss) allocated to participating securities | — |  |  | 2,899 |  |  | (1,227) |  |  | 13,269 |
Net income (loss) from continuing operations attributable to common stockholders | $ | (36,995) |  |  | $ | 27,345 |  |  | $ | (20,195) |  |  | $ | 125,033 |
Income from discontinued operations | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 217,581 |
Less: Undistributed income allocated to participating securities | — |  |  | — |  |  | — |  |  | 20,876 |
Net income from discontinued operations attributable to common stockholders | — |  |  | — |  |  | — |  |  | 196,705 |
Net income (loss) attributable to common stockholders | $ | (36,995) |  |  | $ | 27,345 |  |  | $ | (20,195) |  |  | $ | 321,738 |
Denominator: |  |  |  |  |  |  |
Weighted average shares of common stock outstanding—basic | 45,708 |  |  | 43,014 |  |  | 43,954 |  |  | 42,970 |
Effect of dilutive securities: |  |  |  |  |  |  |
Restricted stock awards | — |  |  | 310 |  |  | — |  |  | 350 |
Weighted average shares of common stock outstanding—diluted | 45,708 |  |  | 43,324 |  |  | 43,954 |  |  | 43,320 |
Net income (loss) from continuing operations per share of common stock: |  |  |  |  |  |  |
Basic | $ | (0.81) |  |  | $ | 0.64 |  |  | $ | (0.46) |  |  | $ | 2.91 |
Diluted | $ | (0.81) |  |  | $ | 0.63 |  |  | $ | (0.46) |  |  | $ | 2.89 |
Net income from discontinued operations per share of common stock: |  |  |  |  |  |  |
Basic | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 4.58 |
Diluted | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 4.54 |
Net income (loss) per share of common stock: |  |  |  |  |  |  |
Basic | $ | (0.81) |  |  | $ | 0.64 |  |  | $ | (0.46) |  |  | $ | 7.49 |
Diluted | $ | (0.81) |  |  | $ | 0.63 |  |  | $ | (0.46) |  |  | $ | 7.43 |
The following shares were excluded from the calculation of diluted shares outstanding as their effect would have been anti-dilutive (in thousands):
| Three months ended September 30, |  | Nine months ended September 30,
| 2022 |  | 2021 |  | 2022 |  | 2021
Restricted stock units | 833 |  |  | 2 |  |  | 833 |  |  | 189 |
Employee stock purchase plan | 95 |  |  | 46 |  |  | 95 |  |  | 15 |

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