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INCOME (LOSS) PER SHARE - Schedule of Computation of Basic and Diluted Net Income (Loss) Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2021 | Mar. 31, 2020
Numerator |  |
Income (loss) from 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)
Income (loss) from discontinued operations, net of tax | 0 | 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 | 72 | 0
Diluted net income (loss) attributable to common stockholders - continuing operations | 14,630 | (213,904)
Net income (loss) attributable to common stockholders - discontinued operations | 0 | 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 (in shares) | 29,028,489 | 28,365,216
Weighted-average effect of diluted securities |  |
Shares used in computation of diluted net income (loss) per share (in shares) | 30,265,563 | 28,365,216
Basic net income (loss) per share: |  |
Continuing operations (in usd per share) | $ 0.50 | $ (7.54)
Discontinued operations (in usd per share) | 0 | 0.01
Basic net income (loss) per share (in usd per share) | 0.50 | (7.53)
Diluted net income (loss) per share: |  |
Continuing operations (in usd per share) | 0.48 | (7.54)
Discontinued operations (in usd per share) | 0 | 0.01
Diluted net income (loss) per share (in usd per share) | $ 0.48 | $ (7.53)
Restricted stock units |  |
Weighted-average effect of diluted securities |  |
Dilutive effect of share-based payment arrangements (in shares) | 109,419 | 0
Performance share units and other stock-based compensation awards |  |
Weighted-average effect of diluted securities |  |
Dilutive effect of share-based payment arrangements (in shares) | 931,922 | 0
Convertible senior notes due 2026 |  |
Weighted-average effect of diluted securities |  |
Dilutive effect of convertible senior notes (in shares) | 195,733 | 0

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