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INCOME (LOSS) PER SHARE (Tables) | 3 Months Ended
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Mar. 31, 2021
Earnings Per Share [Abstract] |
Schedule of Computation of Basic and Diluted Net Income (Loss) Per Share | The following table sets forth the computation of basic and diluted net income (loss) per share of common stock for the three months ended March 31, 2021 and 2020 (in thousands, except share amounts and per share amounts):
| Three Months Ended March 31,
| 2021 |  | 2020
Basic and diluted net income (loss) per share: |  |  |
Numerator |  |  |
Net income (loss) - continuing operations | $ | 14,448 |  |  | $ | (210,860) |
Less: Net income (loss) attributable to noncontrolling interests | (110) |  |  | 3,044 |
Basic net income (loss) attributable to common stockholders - continuing operations | 14,558 |  |  | (213,904) |
Net income (loss) attributable to common stockholders - discontinued operations | — |  |  | 382 |
Basic net income (loss) attributable to common stockholders | $ | 14,558 |  |  | $ | (213,522) |
Add: Effect of assumed conversion of convertible senior notes due 2026, net of tax (1) | $ | 72 |  |  | $ | — |
Diluted net income (loss) attributable to common stockholders - continuing operations | 14,630 |  |  | (213,904) |
Net income (loss) attributable to common stockholders - discontinued operations | — |  |  | 382 |
Diluted net income (loss) attributable to common stockholders | $ | 14,630 |  |  | $ | (213,522) |
Denominator |  |  |
Shares used in computation of basic net income (loss) per share | 29,028,489 |  |  | 28,365,216 |
Weighted-average effect of diluted securities |  |  |
Restricted stock units | 931,922 |  |  | — |
Performance share units and other stock-based compensation awards | 109,419 |  |  | — |
Convertible senior notes due 2026 (1) | 195,733 |  |  | — |
Shares used in computation of diluted net income (loss) per share | 30,265,563 |  |  | 28,365,216 |
Basic net income (loss) per share: |  |  |
Continuing operations | $ | 0.50 |  |  | $ | (7.54) |
Discontinued operations | — |  |  | 0.01 |
Basic net income (loss) per share | $ | 0.50 |  |  | $ | (7.53) |
Diluted net income (loss) per share: |  |  |
Continuing operations | $ | 0.48 |  |  | $ | (7.54) |
Discontinued operations | — |  |  | 0.01 |
Diluted net income (loss) per share | $ | 0.48 |  |  | $ | (7.53) |
(1)We apply the if-converted method in computing the effect of our convertible senior notes on diluted net income (loss) per share, whereby the numerator of our diluted net income (loss) per share computations are adjusted for interest expense, net of tax, and the denominator is adjusted for the number shares into which the convertible senior notes could be converted. The effect is only included in the calculation of earnings per share for those instruments for which it would reduce earnings per share. Beginning January 1, 2021, the interest expense, net of tax, included in the numerator adjustment is calculated in accordance with ASU 2020-06, while prior period interest expense, net of tax, included in the numerator adjustment continues to be calculated in accordance with the historical policies and remains unchanged. See Note 5, Financing Arrangements, for additional information.
Schedule of Weighted-Average Potentially Dilutive Instruments | The following weighted-average potentially dilutive instruments are not included in the diluted net income (loss) per share calculations above because they would have had an antidilutive effect on the net income (loss) per share from continuing operations:
| Three Months Ended March 31,
| 2021 |  | 2020
Restricted stock units | 172,015 |  |  | 1,657,810 |
Performance share units and other stock-based compensation awards | — |  |  | 279,243 |
Convertible senior notes due 2022 (1) | 2,314,815 |  |  | 2,314,815 |
Warrants | 2,314,815 |  |  | 2,314,815 |
Capped call transactions | 195,733 |  |  | — |
Total | 4,997,378 |  |  | 6,566,683 |
(1)We apply the if-converted method in computing the effect of our convertible senior notes on diluted net income (loss) per share, whereby the numerator of our diluted net income (loss) per share computations are adjusted for interest expense, net of tax, and the denominator is adjusted for the number shares into which the convertible senior notes could be converted. The effect is only included in the calculation of earnings per share for those instruments for which it would reduce earnings per share. See Note 5, Financing Arrangements, for additional information.

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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 an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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