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Net Income Per Share (Tables) | 3 Months Ended
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Mar. 31, 2026
Earnings Per Share [Abstract] |
Reconciliation of Common Shares Used for Basic and Diluted Earnings Per Share | The following table provides a reconciliation of the weighted-average shares used for basic net income (loss) per share to the weighted-average diluted shares used for diluted net income (loss) per share for the three months ended March 31, 2026 and 2025:
Three Months Ended March 31, |  | 2026 |  | 2025 |  |  |  |
Basic WASO denominator |  | 45,302,933 |  |  | 47,313,012 |  |  |  |  |
Effect of potential dilutive shares : |  |  |  |  |  |  |  |
Restricted stock units |  | — |  |  | — |  |  |  |  |
Performance stock units (1) |  | — |  |  | — |  |  |  |  |
Diluted WASO denominator |  | 45,302,933 |  |  | 47,313,012 |  |  |  |  |
Anti-dilutive shares excluded from the above reconciliation: |  |  |  |  |  |  |  |
Warrants (2) |  | 5,092,707 |  |  | — |  |  |  |  |
Options (2) |  | 1,134,500 |  |  | — |  |  |  |  |
Restricted stock units |  | 603,675 |  |  | 411,433 |  |  |  |  |
Performance stock units (1) |  | 239,720 |  |  | 145,197 |  |  |  |  |
(1) Performance stock units are reflected based on the performance metrics through the balance sheet date. Vesting of these units is contingent upon meeting certain performance metrics. Although a portion of these performance metrics have been achieved as of the respective period end, it is possible that awards may no longer meet the metric at the end of the performance period. (2) Options require the OSG's stock price to exceed certain market price hurdles to vest, none of which have been met. Warrants have an exercise price above the market price of OSG stock during the period. Amounts shown reflect the maximum number of shares issuable upon exercise, weighted for the time outstanding during the perio ds.
Schedule of Earnings Per Share, Basic and Diluted | The following table provides a reconciliation of net income (loss) from continuing operations attributable to common stockholders to the numerator in the basic and diluted earnings (loss) per share calculation, together with the resulting earnings (loss) per share ("EPS") amounts for the three months ended March 31, 2026 and 2025:
Three Months Ended March 31, |  | 2026 |  | 2025 |  |  |  |
Net income (loss) attributable to common stockholders |  | $ | (6,851) |  |  | $ | (46,391) |  |  |  |  |
Adjustment to redemption value (ASC 480) |  | 807 |  |  | (10,825) |  |  |  |  |
Numerator of basic and diluted EPS |  | $ | (6,044) |  |  | $ | (57,216) |  |  |  |  |
Per share: |  |  |  |  |  |  |  |
Basic |  | $ | (0.13) |  |  | $ | (1.21) |  |  |  |  |
Diluted |  | $ | (0.13) |  |  | $ | (1.21) |  |  |  |  |
Schedule of Repurchased Shares | The following table shows shares repurchased by year.
($ in thousands, except per share) |  |  |  |  |  | Year Ended December 31, |  | YTD 2026
|  |  |  |  | 2024 |  | 2025 |
Shares repurchased |  |  |  |  |  | 937,141 |  | 3,434,745 |  | 0
Total cost |  |  |  |  |  | $ | 11,678 |  |  | $ | 29,942 |  |  | $ | — |
Average purchase price per share |  |  |  |  |  | $ | 12.48 |  |  | $ | 8.72 |  |  | $ | — |
Unused authorization amount |  |  |  |  |  |  |  | $ | 8,449 |

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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 -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482662/260-10-50-1 + Details
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- Definition Tabular disclosure of the weighted average number of shares used in calculating basic net earnings per share (or unit) and diluted earnings per share (or unit). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482662/260-10-50-1 + Details
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