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Earnings Per Common Share - Calculation of Earnings Per Share (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items] |  |  |
Loss from continuing operations | $ (41,924) | $ (102,147) | $ (27,377)
Income from continuing operations attributable to redeemable noncontrolling interest | 37 | 0 | 0
Loss from continuing operations attributable to RYAM | (41,961) | (102,147) | (27,377)
Less: Redeemable noncontrolling interest adjustment to redemption value | (253) | 0 | 0
Loss from continuing operations attributable to RYAM common stockholders | (42,214) | (102,147) | (27,377)
Income from discontinued operations, net of tax attributable to RYAM | 3,217 | 312 | 12,458
Net loss attributable to common stockholders - (Basic) | (38,997) | (101,835) | (14,919)
Net loss attributable to common stockholders - (Diluted) | $ (38,997) | $ (101,835) | $ (14,919)
Shares used in determining basic earnings per common share (in shares) | 65,748,775 | 65,108,397 | 63,910,010
Dilutive effect of: |  |  |
Shares used in determining diluted earnings per common share (in shares) | 65,748,775 | 65,108,397 | 63,910,010
Stock options |  |  |
Dilutive effect of: |  |  |
Incremental shares (in shares) | 0 | 0 | 0
Performance and restricted stock |  |  |
Dilutive effect of: |  |  |
Incremental shares (in shares) | 0 | 0 | 0

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