Trading Arrangements, by Individual
Trading Arrangements, by Individual [Table]
Deferred Tax Asset [Domain]
Deferred Tax Asset [Domain]
Trading Arrangement:
Trading Arrangement [Axis]
Maximum
Maximum [Member]
Portion at Fair Value Measurement
Portion at Fair Value Measurement [Member]
Statistical Measurement [Domain]
Statistical Measurement [Domain]
Federal
Income Tax Jurisdiction, Domestic Federal [Member]
Short-term Debt, Type [Axis]
Short-Term Debt, Type [Axis]
Title of 12(b) Security
Title of 12(b) Security
Net loss attributable to RYAM common stockholders (Diluted)
Net Income (Loss) Available to Common Stockholders, Diluted
Carrying Amount
Reported Value Measurement [Member]
Document Fiscal Year Focus
Document Fiscal Year Focus
Adjustment to Compensation, Amount
Adjustment to Compensation Amount
Awards
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Segment Reporting [Abstract]
Segment Reporting [Abstract]
Common stock: 140,000,000 shares authorized at $0.01 par value, 67,634,382 and 67,005,593 issued and outstanding, respectively
Common Stock, Value, Issued
Repurchase of common stock
Payment, Tax Withholding, Share-Based Payment Arrangement
Schedule of Long-term Debt Instruments
Schedule of Long-Term Debt Instruments [Table Text Block]
Employee Benefit Plans
Retirement Benefits [Text Block]
Line of Credit
Line of Credit [Member]
Restatement Determination Date
Restatement Determination Date
Expected return on plan assets
Defined Benefit Plan, Expected Return (Loss) on Plan Assets
Amendment Flag
Amendment Flag
Borregaard ASA
Borregaard ASA [Member]
Borregaard ASA [Member]
Current liabilities
Liabilities, Current [Abstract]
Other current liabilities
Other Sundry Liabilities, Current
Entity Common Stock, Shares Outstanding
Entity Common Stock, Shares Outstanding
Cellulose Specialties
Cellulose Specialties [Member]
Cellulose Specialties [Member]
Disposal Group Classification [Axis]
Disposal Group Classification [Axis]
Unrealized loss on derivative instruments, net of tax
AOCI, Derivative Qualifying as Hedge, Excluded Component, Parent [Member]
Prepayment of insurance claim
Insurance Claim, Prepayment
Insurance Claim, Prepayment
Other comprehensive income (loss), net of tax (Note 11):
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Adjustment to Non-PEO NEO Compensation Footnote
Adjustment to Non-PEO NEO Compensation Footnote [Text Block]
Entity Address, State or Province
Entity Address, State or Province
PEO Total Compensation Amount
PEO Total Compensation Amount
Charges incurred
Restructuring Charges, Excluding Non-Cash Items
Restructuring Charges, Excluding Non-Cash Items
Common stock, par value (in dollars per share)
Common Stock, Par or Stated Value Per Share
Foreign currency translation adjustment
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax
Income Taxes [Line Items]
Income Tax Contingency [Line Items]
Weighted average shares used in determining earnings per share of common stock - Basic (in shares)
Weighted Average Number of Shares Outstanding, Basic
Accelerated Depreciation
Accelerated Depreciation [Member]
Accelerated Depreciation
Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Abstract]
Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Abstract]
Outstanding Aggregate Erroneous Compensation Amount
Outstanding Aggregate Erroneous Compensation Amount
Fair Value, by Balance Sheet Grouping [Table]
Fair Value, by Balance Sheet Grouping [Table]
Short-term factoring facility
Short-Term Factoring Facility-France [Member]
Short-Term Factoring Facility-France
Number of reportable segments
Number of Reportable Segments
Total current liabilities
Liabilities, Current
BioNova
BioNova [Member]
BioNova
Work-in-progress
Inventory, Work in Process, Net of Reserves
Environmental Remediation Obligations [Abstract]
Environmental Remediation Obligations [Abstract]
Environmental loss contingencies term
Environmental Loss Contingencies Term
Estimated time frame for probable costs expected to be incurred for environmental liabilities.
Gain on insurance recoveries
Gain (Loss) on Insurance Recoveries
Gain (Loss) on Insurance Recoveries
Short-term Debt, Type [Domain]
Short-Term Debt, Type [Domain]
Subsequent Events
Subsequent Events, Policy [Policy Text Block]
Entity Address, City or Town
Entity Address, City or Town
Granted (in shares)
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Defined Benefit Plans Disclosure [Line Items]
Defined Benefit Plan Disclosure [Line Items]
Accounts Receivable, Net
Loans, Notes, Trade and Other Receivables Disclosure [Text Block]
Receivables [Abstract]
Receivables [Abstract]
Statement of Financial Position [Abstract]
Statement of Financial Position [Abstract]
Title and Position [Domain]
Title and Position [Domain]
Temiscaming HPC permanent idling charges (Note 2)
Permanent idling charges
Temiscaming HPC permanent idling charges
Permanent Idling Charges
Permanent Idling Charges
Award Timing MNPI Disclosure
Award Timing MNPI Disclosure [Text Block]
Exercised or settled (in shares)
Vested (in shares)
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period
Basis of Presentation
Basis of Accounting, Policy [Policy Text Block]
Intangible assets, net
Intangible Asset, Finite-Lived, after Accumulated Amortization
Peer Group Total Shareholder Return Amount
Peer Group Total Shareholder Return Amount
Unrealized gain on derivative instruments
Other Comprehensive Income (Loss), Derivative, Excluded Component, Increase (Decrease), after Adjustments and Tax
Net loss attributable to RYAM common stockholders (Basic)
Net Income (Loss) Available to Common Stockholders, Basic
Level 2
Fair Value, Inputs, Level 2 [Member]
Receivable [Domain]
Receivable [Domain]
Total Shareholder Return Vs Peer Group
Total Shareholder Return Vs Peer Group [Text Block]
Temiscaming Operations
Plant Operations [Text Block]
Plant Operations
Total other comprehensive income (loss)
Other Comprehensive Income (Loss), Net of Tax
Non-Rule 10b5-1 Arrangement Terminated
Non-Rule 10b5-1 Arrangement Terminated [Flag]
Schedule of Reconciliation of Identifiable Assets
Segment Reporting, Reconciliation of Asset by Segment to Consolidated [Table Text Block]
Insurance recoveries on property damage
Proceeds from Insurance Settlement, Investing Activities
Environmental remediation expense
Environmental Remediation Expense, before Recovery
Other Costs
Other Restructuring [Member]
Award performance period
Share-Based Compensation Arrangement By Share-Based Payment Award, Performance Period
Share-Based Compensation Arrangement By Share-Based Payment Award, Performance Period
Government Assistance, Income, Increase (Decrease), Statement of Income or Comprehensive Income [Extensible Enumeration]
Government Assistance, Income, Increase (Decrease), Statement of Income or Comprehensive Income [Extensible Enumeration]
Schedule of Long-term Debt Instruments [Table]
Schedule of Long-Term Debt Instruments [Table]
Accrued customer incentives
Accrued Customer Incentives, Current
Accrued Customer Incentives, Current
Cash provided by operating activities
Cash Provided by (Used in) Operating Activity, Continuing Operation
Recent Accounting Developments
New Accounting Pronouncements, Policy [Policy Text Block]
Capital assets purchased on account
Capital Expenditures Incurred but Not yet Paid
Schedule of Segment Reporting
Segment Reporting [Table Text Block]
Loss on disposal of property, plant and equipment
Gain (Loss) on Disposition of Property Plant Equipment
Other comprehensive (loss) income, net of tax
Total other comprehensive income (loss)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent
Loss from continuing operations attributable to RYAM common stockholders
Income (Loss) From Continuing Operations, Net Of Tax, Attributable To Common Stockholders
Income (Loss) From Continuing Operations, Net Of Tax, Attributable To Common Stockholders
Redeemable Noncontrolling Interest
Noncontrolling Interest Disclosure [Text Block]
Schedule of Estimated Fair Value of Put Option, Calculated Using Monte Carlo Model
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]
Guarantor Obligations [Line Items]
Guarantor Obligations [Line Items]
Document Period End Date
Document Period End Date
Changes in operating assets and liabilities:
Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract]
Cash used in investing activities
Cash Provided by (Used in) Investing Activity, Including Discontinued Operation
Equity Awards Adjustments, Excluding Value Reported in Compensation Table
Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member]
Borrowings outstanding
Debt Instrument, Face Amount
Costs incurred to date
Restructuring and Related Cost, Cost Incurred to Date
Security Exchange Name
Security Exchange Name
Accumulated other comprehensive loss (Note 11)
Accumulated Other Comprehensive Income (Loss), Net of Tax
Entity Shell Company
Entity Shell Company
Consolidation Items [Domain]
Consolidation Items [Domain]
Fair value measurement adjustment
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Earnings
Weighted average cost of capital
Measurement Input, Weighted Average Cost of Capital [Member]
Measurement Input, Weighted Average Cost of Capital
Accrued interest
Interest Payable, Current
New Segment Structure
Segment Reporting, Policy [Policy Text Block]
Statement of Comprehensive Income [Abstract]
Earnings Per Common Share
Earnings Per Share [Text Block]
Name
Outstanding Recovery, Individual Name
Basic and Diluted earnings per common share (Note 12)
Earnings Per Share [Abstract]
Award Timing, How MNPI Considered
Award Timing, How MNPI Considered [Text Block]
Document Fiscal Period Focus
Document Fiscal Period Focus
Peer Group Issuers, Footnote
Peer Group Issuers, Footnote [Text Block]
Incremental shares issued (in shares)
Shares Issued, Shares, Share-Based Payment Arrangement, Incremental Shares
Shares Issued, Shares, Share-Based Payment Arrangement, Incremental Shares
Redeemable Noncontrolling Interest [Table]
Redeemable Noncontrolling Interest [Table]
Lumber and Newsprint Facilities
Lumber and Newsprint Facilities [Member]
Lumber and Newsprint Facilities
Trading Symbol
Trading Symbol
Geographical [Domain]
Geographical [Domain]
Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year
Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year [Member]
Pension Adjustments Prior Service Cost
Pension Adjustments Prior Service Cost [Member]
Accrued income taxes
Accrued Income Taxes, Current
Company Selected Measure Name
Company Selected Measure Name
Gain on insurance claim
Gain (Loss) from Litigation Settlement
Income Tax Disclosure [Abstract]
Income Tax Disclosure [Abstract]
Reclassifications to earnings
Reclassification from AOCI, Current Period, before Tax, Attributable to Parent
Supplemental cash flow information:
Noncash Investing and Financing Items [Abstract]
Unrecognized components of employee benefit plans, net of tax
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Long-term debt, gross
Proceeds
Long-Term Debt, Gross
Operating activities
Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract]
Compensation Amount
Outstanding Recovery Compensation Amount
Individual:
Individual [Axis]
Weighted average shares used in determining earnings per share of common stock - Diluted (in shares)
Weighted Average Number of Shares Outstanding, Diluted
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Entity Emerging Growth Company
Entity Emerging Growth Company
Equity Valuation Assumption Difference, Footnote
Equity Valuation Assumption Difference, Footnote [Text Block]
Pension and other postretirement benefits (Note 14)
Liability, Defined Benefit Plan, Noncurrent
Required availability
Long-term Debt, Gross, Covenant, Required Availability
Long-term Debt, Gross, Covenant, Required Availability
Disposal Group Name [Domain]
Disposal Group Name [Domain]
Underlying Security Market Price Change
Underlying Security Market Price Change, Percent
Deferred income tax expense (benefit)
Deferred Income Taxes and Tax Credits
Schedule of Discontinued Operations
Disposal Groups, Including Discontinued Operations [Table Text Block]
Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table]
Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table]
Gross margin
Gross Profit
Schedule of Estimated Fair Value of SWEN Put Option, Calculated Using Monte Carlo Model
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]
Put option, measurement input
Embedded Derivative Liability, Measurement Input
Other
Increase (Decrease) in Other Operating Assets and Liabilities, Net
Temiscaming HPC permanent idling charges - other asset adjustments
Permanent Idling Charges - Other Asset Adjustments
Permanent Idling Charges - Other Asset Adjustments
Award Timing Predetermined
Award Timing Predetermined [Flag]
Letters of credit
Letters of Credit Outstanding, Amount
Adjustment To PEO Compensation, Footnote
Adjustment To PEO Compensation, Footnote [Text Block]
Total debt
Debt and Lease Obligation
Stock-based compensation expense
APIC, Share-Based Payment Arrangement, Increase for Cost Recognition
Effective tax rate
Effective Income Tax Rate Reconciliation, Percent
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Redeemable Noncontrolling Interest [Line Items]
Redeemable Noncontrolling Interest [Line Items]
Beginning balances (in dollars per share)
Ending balances (in dollars per share)
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value
Income (loss) from continuing operations
Loss from continuing operations
Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest
All Executive Categories
All Executive Categories [Member]
Pension Adjustments Service Cost
Pension Adjustments Service Cost [Member]
Schedule of Net Pension and Postretirement Benefit Costs
Schedule of Net Benefit Costs [Table Text Block]
Redeemable noncontrolling interest (Note 10)
Redeemable noncontrolling interest
Balance, beginning of period
Balance, end of period
Redeemable Noncontrolling Interest, Equity, Carrying Amount
Antidilutive Securities [Axis]
Antidilutive Securities [Axis]
Temiscaming HPC permanent idling charges - accelerated depreciation
Permanent Idling Charges - Accelerated Depreciation
Permanent Idling Charges - Accelerated Depreciation
Guarantor Obligations, Nature [Axis]
Guarantor Obligations, Nature [Axis]
Shareholder Agreement [Axis]
Shareholder Agreement [Axis]
Shareholder Agreement
Schedule of Earnings Per Share, Basic and Diluted
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
Fair Value Disclosures [Abstract]
Fair Value Disclosures [Abstract]
Debt Disclosure [Abstract]
Debt Disclosure [Abstract]
Debt Instrument, Name [Domain]
Debt Instrument, Name [Domain]
Segments
Segment Reporting [Text Block]
Minimum
Minimum [Member]
Canada Revenue Agency
Canada Revenue Agency [Member]
Expiration Date
Trading Arrangement Expiration Date
Net decrease in cash and cash equivalents
Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Excluding Exchange Rate Effect, Including Discontinued Operation
Net effect of foreign exchange on cash and cash equivalents
Effect of Exchange Rate on Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation
Loss from continuing operations - diluted (in dollars per share)
Income (Loss) from Continuing Operations, Per Diluted Share
Loss from continuing operations - basic (in dollars per share)
Income (Loss) from Continuing Operations, Per Basic Share
Non-Rule 10b5-1 Arrangement Adopted
Non-Rule 10b5-1 Arrangement Adopted [Flag]
Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table
Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table [Member]
Award value cap, rate
Share-based Compensation Arrangements By Share-based Payment Award, Award Value Cap, Rate
Share-based Compensation Arrangements By Share-based Payment Award, Award Value Cap, Rate
Disposal Group, Including Discontinued Operations [Line Items]
Disposal Group, Including Discontinued Operations [Line Items]
Net periodic benefit cost
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)
Aggregate Pension Adjustments Service Cost
Aggregate Pension Adjustments Service Cost [Member]
Common stock, shares authorized (in shares)
Common Stock, Shares Authorized
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table]
Antidilutive Security, Excluded EPS Calculation [Table]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accrued employee compensation
Accrued Employee Benefits, Current
Exercise Price
Award Exercise Price
Schedule of Restructuring and Related Costs [Table]
Restructuring Cost [Table]
Investing activities
Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract]
Segment Reporting [Line Items]
Segment Reporting [Line Items]
Schedule of Environmental Liabilities
Schedule of Environmental Loss Contingencies by Site [Table Text Block]
Document Quarterly Report
Document Quarterly Report
Disposal Groups, Including Discontinued Operations [Table]
Disposal Groups, Including Discontinued Operations [Table]
Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested
Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested [Member]
Segments [Domain]
Segments [Domain]
LPU awards
Leveraged Performance Units [Member]
Leveraged Performance Units
Loss from continuing operations before income tax
Loss from continuing operations before income tax
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest
Debt and Finance Leases
Debt Disclosure [Text Block]
Repayments of long-term debt
Repayments of Long-Term Debt
Operating Activities [Domain]
Operating Activities [Domain]
Disposal Group Classification [Domain]
Disposal Group Classification [Domain]
Less: unamortized premium, discount and issuance costs
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net
Schedule of Suspension Activity Charges
Restructuring and Related Costs [Table Text Block]
Awards Close in Time to MNPI Disclosures, Table
Awards Close in Time to MNPI Disclosures [Table Text Block]
Beginning balance
Ending balance
Restructuring Reserve
Equity Component [Domain]
Equity Component [Domain]
PEO Actually Paid Compensation Amount
PEO Actually Paid Compensation Amount
Measurement Input Type [Domain]
Measurement Input Type [Domain]
Secured Debt
Secured Debt [Member]
Augusta, Georgia
Augusta, Georgia [Member]
Augusta, Georgia [Member]
Total accounts receivable, gross
Accounts Receivable, before Allowance for Credit Loss, Current
Adoption Date
Trading Arrangement Adoption Date
Site Contingency [Table]
Site Contingency [Table]
Fixed interest rate
Debt Instrument, Interest Rate, Stated Percentage
Total stockholders’ equity
Beginning balance
Ending balance
Equity, Attributable to Parent
Restructuring Type [Axis]
Restructuring Type [Axis]
Environmental Liabilities
Environmental Loss Contingency Disclosure [Text Block]
Assets
Assets [Abstract]
Change in fair value of put option liability
Fair Value Adjustment of Derivative Liabilities
Fair Value Adjustment of Derivative Liabilities
Title
Trading Arrangement, Individual Title
Forgone Recovery due to Disqualification of Tax Benefits, Amount
Forgone Recovery due to Disqualification of Tax Benefits, Amount
Accrued and other current liabilities (Note 6)
Accrued and other current liabilities
Accrued And Other Current Liabilities
Accrued And Other Current Liabilities
Restatement does not require Recovery
Restatement Does Not Require Recovery [Text Block]
Environmental Remediation Site [Axis]
Environmental Remediation Site [Axis]
Insider Trading Policies and Procedures [Line Items]
Finance lease obligation
Finance Lease, Liability
Accrual for Environmental Loss Contingencies [Roll Forward]
Accrual for Environmental Loss Contingencies [Roll Forward]
Allowance for credit loss
Accounts Receivable, Allowance for Credit Loss, Current
Insider Trading Policies and Procedures Adopted
Insider Trading Policies and Procedures Adopted [Flag]
Performance-Based Stock Units
Performance Shares [Member]
Sale leaseback transaction, effective interest rate
Sale Leaseback Transaction, Interest Rate
Sale Leaseback Transaction, Interest Rate
Prepaid and other current assets
Prepaid Expense and Other Assets, Current
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Selling, general and administrative expense
Selling, general and administrative expense
Selling, General and Administrative Expense
Type of Restructuring [Domain]
Type of Restructuring [Domain]
Letter of Credit
Letter of Credit [Member]
Compensation Actually Paid vs. Net Income
Compensation Actually Paid vs. Net Income [Text Block]
LignoTech Florida
LignoTech Florida [Member]
LignoTech Florida [Member]
Total anti-dilutive instruments (in shares)
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount
Accounts receivable, other
Other Receivables [Member]
Other Receivables [Member]
Number of operating segments
Number of Operating Segments
Restricted Stock Units
Restricted Stock Units (RSUs) [Member]
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]
Entity Central Index key
Entity Central Index Key
Accumulated depreciation
Property, Plant, and Equipment, Accumulated Depreciation, Depletion, and Amortization
All Adjustments to Compensation
All Adjustments to Compensation [Member]
Schedule of Guarantor Obligations [Table]
Guarantor Obligation [Table]
Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year
Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year [Member]
Cash provided by operating activities
Cash Provided by (Used in) Operating Activity, Including Discontinued Operation
Income Statement [Abstract]
Income Statement [Abstract]
Document Transition Report
Document Transition Report
Ownership [Axis]
Ownership [Axis]
Schedule Of Income (Loss) Attributable to Parent
Schedule Of Income (Loss) Attributable to Parent [Table Text Block]
Schedule Of Income (Loss) Attributable to Parent
Fair Value Hierarchy and NAV [Axis]
Fair Value Hierarchy and NAV [Axis]
Investment, Name [Axis]
Investment, Name [Axis]
Deferred tax assets
Deferred Income Tax Assets, Net
Total principal payments due
Debt And Lease Obligation, Gross
Debt And Lease Obligation, Gross
Stock Appreciation Rights (SARs)
Stock Appreciation Rights (SARs) [Member]
Shares funded (in shares)
Redeemable Noncontrolling Interest, Shares Issued
Redeemable Noncontrolling Interest, Shares Issued
City Area Code
City Area Code
Amortization of prior service cost
Accumulated Defined Benefit Plans Adjustment, Net Prior Service Attributable to Parent [Member]
Accumulated Other Comprehensive Loss
AOCI Attributable to Parent [Member]
All Individuals
All Individuals [Member]
BioNova Term Loan
BioNova Term Loan [Member]
BioNova Term Loan
Free cash flow to equity volatility
Measurement Input, Price Volatility [Member]
Fixed-rate long-term debt
Debt Instrument, Fair Value Disclosure
Name
Forgone Recovery, Individual Name
Sale leaseback transaction, purchase option retaining amount
Sale Leaseback Transaction, Purchase Option Retaining, Amount
Sale Leaseback Transaction, Purchase Option Retaining, Amount
Finished goods
Inventory, Finished Goods, Net of Reserves
Non-GAAP Measure Description
Non-GAAP Measure Description [Text Block]
Weighted Average Grant Date Fair Value
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Statement [Line Items]
Statement [Line Items]
Total assets
Assets
Entity [Domain]
Entity [Domain]
Balance at December 31, 2025
Balance at June 27, 2026
Accrual for Environmental Loss Contingencies
Pre-tax income from CEWS benefit claims
Government Assistance, Income, Increase (Decrease)
Insurance claim, deductible limit
Insurance Claim, Deductible Limit
Insurance Claim, Deductible Limit
Amortization of prior service cost (credit)
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)
Other loans
Other Loans [Member]
Other Loans [Member]
Operating Segments
Operating Segments [Member]
Interest expense
Interest expense
Interest Expense, Nonoperating
Schedule of Stock-Based Compensation Expense
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]
Current environmental liabilities (Note 8)
Current environmental liabilities
Accrued Environmental Loss Contingencies, Current
Incentive Stock Plans
Share-Based Payment Arrangement [Text Block]
PEO
PEO [Member]
Sale leaseback transaction, monthly rental payments
Sale Leaseback Transaction, Rental Payments
Sale Leaseback Transaction, Rental Payments
Accrued property and other taxes
Accrual for Taxes Other than Income Taxes, Current
Term for hazardous waste permit
Term For Hazardous Waste Permit
Term For Hazardous Waste Permit
Incentive stock plan compensation expense
Share-Based Payment Arrangement, Expense
Measurement Basis [Axis]
Measurement Basis [Axis]
Other liabilities
Other Liabilities, Noncurrent
Redeemable Noncontrolling Interest
Redeemable Noncontrolling Interest [Policy Text Block]
Redeemable Noncontrolling Interest
Retirement Plan Type [Axis]
Retirement Plan Type [Axis]
Forgone Recovery due to Violation of Home Country Law, Amount
Forgone Recovery due to Violation of Home Country Law, Amount
Income tax expense
Discontinued Operation, Tax Effect of Discontinued Operation
Granted (in dollars per share)
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value
Payables and Accruals [Abstract]
Payables and Accruals [Abstract]
Discontinued Operations, Disposed of by Sale
Discontinued Operations, Disposed of by Sale [Member]
Retained Earnings (Deficit)
Retained Earnings [Member]
Forfeited (in dollars per share)
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value
Erroneously Awarded Compensation Recovery
Erroneously Awarded Compensation Recovery [Table]
Amortization of gain
Accumulated Defined Benefit Plans Adjustment, Net Gain (Loss) Attributable to Parent [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock, shares outstanding (in shares)
Beginning balance (in shares)
Ending balance (in shares)
Common Stock, Shares, Outstanding
Award Timing Disclosures [Line Items]
Foreign currency translation
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Debt issuance costs
Payments of Debt Issuance Costs
Net loss - diluted (in dollars per share)
Earnings Per Share, Diluted
Accumulated Other Comprehensive Income (Loss) [Table]
Accumulated Other Comprehensive Income (Loss) [Table]
Entity Current Reporting Status
Entity Current Reporting Status
Cash provided by (used in) financing activities
Cash Provided by (Used in) Financing Activity, Including Discontinued Operation
Total Shareholder Return Amount
Total Shareholder Return Amount
Repurchase of common stock
Share-Based Payment Arrangement, Decrease for Tax Withholding Obligation
Income from discontinued operations - diluted (in dollars per share)
Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Diluted Share
Performance-based and restricted stock units
Performance-Based And Restricted Stock Units [Member]
Performance-Based And Restricted Stock Units
Ownership [Domain]
Ownership [Domain]
Fixed and other costs of sales
Cost of Goods and Services Sold, Fixed and Other General Costs
Cost of Goods and Services Sold, Fixed and Other General Costs
Adjustments to reconcile net loss to cash provided by operating activities:
Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract]
Share-based Payment Arrangement [Abstract]
Share-Based Payment Arrangement [Abstract]
Income tax on reclassifications
Reclassification from AOCI, Current Period, Tax
Financing activities
Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract]
Property, plant and equipment (net of accumulated depreciation of $2,086,605 and $1,994,671, respectively)
Property, Plant, and Equipment, after Accumulated Depreciation, Depletion, and Amortization
Net sales
Total consolidated net sales
Revenue from Contract with Customer, Excluding Assessed Tax
Borrowing capacity available
Line of Credit Facility, Remaining Borrowing Capacity
Interest cost
Defined Benefit Plan, Interest Cost
Surety Bond
Surety Bond [Member]
Schedule of Suspension Reserve by Type of Cost
Schedule of Restructuring Reserve by Type of Cost [Table Text Block]
Inventory
Inventory Disclosure [Text Block]
Equity Awards Adjustments, Footnote
Equity Awards Adjustments, Footnote [Text Block]
Underlying Securities
Award Underlying Securities Amount
Comprehensive income (loss) attributable to redeemable noncontrolling interest
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest
Fair Value
Estimate of Fair Value Measurement [Member]
Short-term factoring facility
Short-Term Debt, Gross
Short-Term Debt, Gross
Inventory
Increase (Decrease) in Inventories
Fixed Rate Debt
Fixed Rate Debt [Member]
Fixed Rate Debt
Segment Reporting [Table]
Segment Reporting [Table]
Title and Position [Axis]
Title and Position [Axis]
Accrued and Other Current Liabilities
Accounts Payable, Accrued Liabilities, and Other Liabilities Disclosure, Current [Text Block]
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies Disclosure [Abstract]
All Trading Arrangements
All Trading Arrangements [Member]
Income Tax Jurisdiction, Foreign
Income Tax Jurisdiction, Foreign [Member]
Balance, beginning of period
Balance, end of period
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value
Other Performance Measure, Amount
Other Performance Measure, Amount
Award Timing MNPI Considered
Award Timing MNPI Considered [Flag]
Operating loss
Operating Income (Loss)
5.50% CAD-based term loan due April 2028
Canadian Dollar, Term Loans [Member]
Canadian Dollar, Term Loans
Other Asset Adjustment
Other Asset Adjustment [Member]
Other Asset Adjustment
Current Fiscal year End Date
Current Fiscal Year End Date
Valuation Allowance by Deferred Tax Asset [Axis]
Valuation Allowance by Deferred Tax Asset [Axis]
Non-PEO NEO Average Total Compensation Amount
Non-PEO NEO Average Total Compensation Amount
Key input costs (wood, chemicals, energy)
Cost of Goods and Services Sold, Key Input Costs
Cost of Goods and Services Sold, Key Input Costs
Restructuring Reserve [Roll Forward]
Restructuring Reserve [Roll Forward]
Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year
Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year [Member]
Entity File Number
Entity File Number
Rule 10b5-1 Arrangement Adopted
Rule 10b5-1 Arrangement Adopted [Flag]
Service cost
Defined Benefit Plan, Service Cost
Short-term financing, net
Proceeds from (Repayments of) Short-Term Debt
Issuance of common stock under incentive stock plans
Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture
Asset impairment (Note 2)
Asset impairment
Asset, Impairment Loss
Recovery of Erroneously Awarded Compensation Disclosure [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Common stock, shares issued (in shares)
Common Stock, Shares, Issued
Measure:
Measure [Axis]
Foreign currency adjustments
Accrual for Environmental Loss Contingencies, Foreign Currency Translation Gain (Loss)
Discontinued Operations
Discontinued Operations [Member]
Mothballing Costs
Mothballing Costs [Member]
Mothballing Costs
Non-current environmental liabilities (Note 8)
Non-current environmental liabilities
Accrued Environmental Loss Contingencies, Noncurrent
Accumulated Other Comprehensive Loss
Comprehensive Income (Loss) Note [Text Block]
Equity Components [Axis]
Equity Components [Axis]
Accounts receivable
Increase (Decrease) in Accounts Receivable
Contract Guarantee
Payment Guarantee [Member]
Increase in environmental liabilities
Environmental Remediation Expense, Noncash
Environmental Remediation Expense, Noncash
Income taxes (paid) refunded, net
Income Tax Paid, after Refund Received
Deferred tax asset, valuation allowance
Deferred Tax Assets, Valuation Allowance
Entity Interactive Data Current
Entity Interactive Data Current
Deferred tax liabilities
Deferred Income Tax Liabilities, Net
Compensation Actually Paid vs. Other Measure
Compensation Actually Paid vs. Other Measure [Text Block]
Redeemable noncontrolling interest adjustment to redemption value
Adjustment to redemption value
Redeemable noncontrolling interest adjustment to redemption value
Noncontrolling Interest, Change in Redemption Value
Entity Small Business
Entity Small Business
Comprehensive loss attributable to RYAM
Comprehensive Income (Loss), Net of Tax, Attributable to Parent
Termination Date
Trading Arrangement Termination Date
Repurchase of common stock (in shares)
Share-Based Payment Arrangement, Shares Withheld for Tax Withholding Obligation
Income from discontinued operations
Income from discontinued operations, net of tax
Income from discontinued operations attributable to RYAM
Income from discontinued operations, net of tax attributable to RYAM
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent
Discontinued Operations
Disposal Groups, Including Discontinued Operations, Disclosure [Text Block]
Compensation Actually Paid vs. Total Shareholder Return
Compensation Actually Paid vs. Total Shareholder Return [Text Block]
Net loss on employee benefit plans
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax
MNPI Disclosure Timed for Compensation Value
MNPI Disclosure Timed for Compensation Value [Flag]
Cellulose Commodities
Cellulose Commodities [Member]
Cellulose Commodities [Member]
Payments
Accrual for Environmental Loss Contingencies, Payments
Other assets
Other Assets, Noncurrent
Document Type
Document Type
Fair Value as of Grant Date
Award Grant Date Fair Value
Operating Activities [Axis]
Operating Activities [Axis]
Guarantees
Guarantor Obligation, Estimated Exposure, Undiscounted
Guarantor Obligation, Estimated Exposure, Undiscounted
Site Contingency [Line Items]
Site Contingency [Line Items]
Increase (Decrease) in Temporary Equity [Roll Forward]
Increase (Decrease) in Temporary Equity [Roll Forward]
Total High Purity Cellulose
High Purity Cellulose
High Purity Cellulose [Member]
High Purity Cellulose
Pay vs Performance Disclosure, Table
Pay vs Performance [Table Text Block]
Arrangement Duration
Trading Arrangement Duration
Statement of Stockholders' Equity [Abstract]
Statement of Stockholders' Equity [Abstract]
Borrowings of long-term debt
Proceeds from Issuance of Long-Term Debt
Local Phone Number
Local Phone Number
Postretirement
Other Postretirement Benefits Plan [Member]
Consolidation Items [Axis]
Consolidation Items [Axis]
Entity Address, Postal Zip Code
Entity Address, Postal Zip Code
Entity Registrant Name
Entity Registrant Name
Unrecognized tax benefits, increase resulting from current period tax positions
Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions
Insider Trading Policies and Procedures Not Adopted
Insider Trading Policies and Procedures Not Adopted [Text Block]
Financial Standby Letter of Credit
Financial Standby Letter of Credit [Member]
Fair Value Disclosure of Asset and Liability Not Measured at Fair Value
Fair Value Disclosure of Asset and Liability Not Measured at Fair Value [Table Text Block]
Commitments and contingencies (Note 17)
Commitments and Contingencies
Antidilutive Securities, Name [Domain]
Antidilutive Securities, Name [Domain]
Changed Peer Group, Footnote
Changed Peer Group, Footnote [Text Block]
Equity in loss of equity method investments
Income (Loss) from Equity Method Investments
Income Tax Contingency [Table]
Income Tax Contingency [Table]
Forgone Recovery due to Expense of Enforcement, Amount
Forgone Recovery due to Expense of Enforcement, Amount
Executive Category:
Executive Category [Axis]
Receivable Type [Axis]
Receivable Type [Axis]
Tax effects of foreign translation adjustment
Other Comprehensive Income (Loss), Tax
Manufacturing and maintenance supplies
Inventory, Supplies, Net of Reserves
Award vesting period
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period
Liabilities, Redeemable Noncontrolling Interest and Stockholders’ Equity
Liabilities and Equity [Abstract]
Foreign exchange gain (loss)
Foreign Currency Gain (Loss), Operating
Foreign Currency Gain (Loss), Operating
Inventory (Note 5)
Inventory
Inventory, Net
Award Type [Domain]
Award Type [Domain]
Non-PEO NEO Average Compensation Actually Paid Amount
Non-PEO NEO Average Compensation Actually Paid Amount
Fair Value Measurements
Fair Value Disclosures [Text Block]
Level 3
Fair Value, Inputs, Level 3 [Member]
Noncontrolling percentage
Subsidiary, Ownership Percentage, Noncontrolling Owner
BioNova debt
BioNova Debt [Member]
BioNova Debt
PEO Name
PEO Name
Geographical [Axis]
Geographical [Axis]
Income from discontinued operations before income tax
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax
Accrued and other current liabilities
Increase (Decrease) in Accrued Liabilities
Loss exposure in excess of accrual
Site Contingency, Loss Exposure in Excess of Accrual, Best Estimate
Components of pension and OPEB, excluding service costs (Note 14)
Components of pension and OPEB, excluding service costs
Net Periodic Defined Benefits Expense (Reversal of Expense), Excluding Service Cost Component
Incremental shares value
Shares Issued, Value, Share-Based Payment Arrangement, Incremental Shares
Shares Issued, Value, Share-Based Payment Arrangement, Incremental Shares
ABL Credit Facility due November 2029: [$0 million] net availability and weighted average interest rate of [0.0%] at June 27, 2026
Asset-Based Revolving Credit Facility [Member]
Asset-Based Revolving Credit Facility
Other segment items
Segment Reporting, Other Segment Item, Amount
Interest rate
Line of Credit Facility, Interest Rate During Period
Asset financing obligation
Asset Financing Obligation [Member]
Asset Financing Obligation
Stock Price or TSR Estimation Method
Stock Price or TSR Estimation Method [Text Block]
Entity Tax Identification Number
Entity Tax Identification Number
Shareholder Agreement [Domain]
Shareholder Agreement [Domain]
Shareholder Agreement [Domain]
Legal Entity [Axis]
Legal Entity [Axis]
Accrued energy payable
Accrued Energy Payable, Current
Accrued Energy Payable, Current
Environmental Loss Contingency, Statement of Financial Position [Extensible Enumeration]
Environmental Loss Contingency, Statement of Financial Position [Extensible Enumeration]
Payments
Payments for Restructuring
Balance, beginning of period
Balance, end of period
Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation
Sale leaseback transaction, lease term
Sale Leaseback Transaction, Lease Term
Accounts payable
Increase (Decrease) in Accounts Payable
Entity Incorporation, State or Country Code
Entity Incorporation, State or Country Code
Total Paperboard & High Yield Pulp
Paperboard & High Yield Pulp
Paperboard and High Yield Pulp [Member]
Paperboard and High Yield Pulp
Aggregate Erroneous Compensation Not Yet Determined
Aggregate Erroneous Compensation Not Yet Determined [Text Block]
Material Terms of Trading Arrangement
Material Terms of Trading Arrangement [Text Block]
Non-NEOs
Non-NEOs [Member]
Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year
Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member]
Corporate & Other
Corporate & Other
Corporate and Eliminations [Member]
Corporate and Eliminations
Income from discontinued operations - basic (in dollars per share)
Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Basic Share
Nature of Operations and Basis of Presentation
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]
Comprehensive loss
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest
Debt Instrument [Axis]
Debt Instrument [Axis]
Ownership percentage
Equity Method Investment, Ownership Percentage
Stock-based compensation expense
Equity award expense
Share-Based Payment Arrangement, Noncash Expense
Income Tax Authority, Name [Domain]
Income Tax Authority, Name [Domain]
Disposal Group Name [Axis]
Disposal Group Name [Axis]
Operating income
Disposal Group, Including Discontinued Operation, Operating Income (Loss)
Gross availability
Long-term Debt, Gross, Availability
Long-term Debt, Gross, Availability
Investment, Name [Domain]
Investment, Name [Domain]
GEORGIA
GEORGIA
Schedule of Inventory
Schedule of Inventory, Current [Table Text Block]
Long-term Debt, Type [Domain]
Long-Term Debt, Type [Domain]
Net loss - basic (in dollars per share)
Earnings Per Share, Basic
Measurement Input Type [Axis]
Measurement Input Type [Axis]
Schedule of Activity for Incentive Stock Awards
Disclosure of Share-Based Compensation Arrangements by Share-Based Payment Award [Table Text Block]
Deferred revenue and other income
Contract with Customer, Liability, Current
Total current assets
Total assets
Assets, Current
Statistical Measurement [Axis]
Statistical Measurement [Axis]
Insider Trading Arrangements [Line Items]
Award Type [Axis]
Award Type [Axis]
Named Executive Officers, Footnote
Named Executive Officers, Footnote [Text Block]
Accounts receivable, net (Note 4)
Accounts receivable, net
Accounts Receivable, after Allowance for Credit Loss, Current
Accumulated deficit
Retained Earnings (Accumulated Deficit)
Restructuring and Related Activities [Abstract]
Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table
Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member]
Awards Close in Time to MNPI Disclosures
Awards Close in Time to MNPI Disclosures [Table]
Pension
Pension Plan [Member]
Common Stock
Common Stock [Member]
Income Tax Authority, Name [Axis]
Income Tax Authority, Name [Axis]
Fair Value Measurement [Domain]
Fair Value Measurement [Domain]
Severance and Other Employee Costs
Employee Severance [Member]
Compensation Actually Paid vs. Company Selected Measure
Compensation Actually Paid vs. Company Selected Measure [Text Block]
Cover [Abstract]
Disallowed Interest Deductions
Disallowed Interest Deductions [Member]
Disallowed Interest Deductions
Other operating income
Disposal Group, Including Discontinued Operation, Other Operating Income (Expense), Net
Disposal Group, Including Discontinued Operation, Other Operating Income (Expense), Net
Noncontrolling Interest [Abstract]
Loans
Loans Payable [Member]
Equity Awards Adjustments
Equity Awards Adjustments [Member]
Total liabilities, redeemable noncontrolling interest and stockholders’ equity
Liabilities and Equity
Deferred tax assets
Deferred Tax Assets, Net
Employee Stock Option
Share-Based Payment Arrangement, Option [Member]
Debt due within one year (Note 7)
Debt due within one year
Debt, Current
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Segments [Axis]
Segments [Axis]
Additional 402(v) Disclosure
Additional 402(v) Disclosure [Text Block]
Suspension charges (Note 2)
Suspension charges
Restructuring Charges
Schedule of Accounts Receivable
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]
Income Tax Authority [Domain]
Income Tax Jurisdiction [Domain]
Inventory Disclosure [Abstract]
Inventory Disclosure [Abstract]
Tabular List, Table
Tabular List [Table Text Block]
Additional paid-in capital
Additional Paid in Capital
Other expense, net
Other expense, net
Other Nonoperating Income (Expense)
Other operating income (expense), net
Other Operating Income (Expense), Net
Name
Awards Close in Time to MNPI Disclosures, Individual Name
Port Angeles, Washington
Port Angeles, Washington [Member]
Port Angeles, Washington
Stockholders’ Equity
Equity, Including Portion Attributable to Noncontrolling Interest [Abstract]
Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested
Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member]
Foreign currency translation adjustment on redemption value
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Noncontrolling Interest
Forfeited (in shares)
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period
Schedule of Changes in Redeemable Noncontrolling Interest
Redeemable Noncontrolling Interest [Table Text Block]
Schedule of Accrued and Other Current Liabilities
Other Current Liabilities [Table Text Block]
Adjustment to Compensation:
Adjustment to Compensation [Axis]
Net income attributable to redeemable noncontrolling interest (Note 10)
Net income attributable to redeemable noncontrolling interest
Income from continuing operations attributable to redeemable noncontrolling interest
Net Income (Loss) Attributable to Redeemable Noncontrolling Interest
Restructuring Cost and Reserve [Line Items]
Restructuring Cost and Reserve [Line Items]
Rule 10b5-1 Arrangement Terminated
Rule 10b5-1 Arrangement Terminated [Flag]
Aggregate Erroneous Compensation Amount
Aggregate Erroneous Compensation Amount
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Interest paid
Interest Paid, Excluding Capitalized Interest, Operating Activity
Statement of Cash Flows [Abstract]
Statement of Cash Flows [Abstract]
Contributions to pension and other postretirement plans
Payment for Pension and Other Postretirement Benefits
Accounts receivable, trade
Trade Accounts Receivable [Member]
2029 Term Loan due October 2029: interest rate of 11.2% at June 27, 2026
2029 Term Loan [Member]
2029 Term Loan
Aggregate Available
Trading Arrangement, Securities Aggregate Available Amount
Schedule of Effective Income Tax Rate
Effective Income Tax Rate [Table Text Block]
Effective Income Tax Rate
Long-term debt (Note 7)
Long-term debt
Long-Term Debt and Lease Obligation
Income Tax Authority [Axis]
Income Tax Jurisdiction [Axis]
Discontinued Operations and Disposal Groups [Abstract]
Discontinued Operations and Disposal Groups [Abstract]
Name
Measure Name
Income Taxes
Income Tax Disclosure [Text Block]
Accounts payable
Accounts Payable, Current
Pay vs Performance Disclosure [Line Items]
Fair Value Hierarchy and NAV [Domain]
Fair Value Hierarchy and NAV [Domain]
Other
Other Noncash Income (Expense)
Commitments and Contingencies
Commitments Disclosure [Text Block]
Debt Instrument [Line Items]
Debt Instrument [Line Items]
Pay vs Performance Disclosure
Pay vs Performance Disclosure [Table]
Retirement Plan Type [Domain]
Retirement Plan Type [Domain]
Additional Paid-in Capital
Additional Paid-in Capital [Member]
Entity Filer Category
Entity Filer Category
Director
Director [Member]
Guarantor Obligations, Nature [Domain]
Guarantor Obligations, Nature [Domain]
High Yield Pulp
High Yield Pulp [Member]
Pulp and Newsprint [Member]
Name
Trading Arrangement, Individual Name
Cash and cash equivalents
Cash and Cash Equivalent
Future Exchange
Future Exchange [Member]
Future Exchange
Interest rate
Debt Instrument, Interest Rate During Period
Increase to liability
Accrual for Environmental Loss Contingencies, Charges to Expense for New Losses
Raw materials
Inventory, Raw Materials, Net of Reserves
Company Selected Measure Amount
Company Selected Measure Amount
Other segment items
Segment Reporting, Reconciliation of Other Item by Segment to Consolidated [Abstract]
Beginning Balance (in shares)
Ending Balance (in shares)
Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Outstanding, Number
Depreciation and amortization
Depreciation, Depletion and Amortization
Entity Address, Address Line Two
Entity Address, Address Line Two
Issuance of common stock under incentive stock plans (in shares)
Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture
Schedule of Accounts, Notes, Loans and Financing Receivable [Table]
Accounts and Financing Receivables [Table]
Net loss
Net loss
Net loss
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest
Current assets
Assets, Current [Abstract]
Target payout percentage
Share-based Compensation Arrangements By Share-based Payment Award, Conversion Ratio, Percent Of Target
Share-based Compensation Arrangements By Share-based Payment Award, Conversion Ratio, Percent Of Target
Non-PEO NEO
Non-PEO NEO [Member]
Entity Address, Address Line One
Entity Address, Address Line One
Paperboard
Paperboard [Member]
Paperboard [Member]
Operating lease ROU assets obtained in exchange for lease liabilities
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability
Vested (in dollars per share)
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value
Income tax (expense) benefit (Note 15)
DTA tax expense writeoff
Income Tax Expense (Benefit)
Cost of sales
Total segment cost of sales
Cost of Product and Service Sold
Award Timing Method
Award Timing Method [Text Block]
Forgone Recovery, Explanation of Impracticability
Forgone Recovery, Explanation of Impracticability [Text Block]
SWEN Impact Fund for Transition 3
SWEN Impact Fund for Transition 3 [Member]
SWEN Impact Fund for Transition 3
Insurance recoveries on property damage
Proceeds from Insurance Settlement
Proceeds from Insurance Settlement
Net periodic benefit cost of pension and other postretirement plans
Pension and Other Postretirement Benefits Expense (Reversal of Expense), Noncash
Amortization of (gain) loss
Defined Benefit Plan, Amortization of Gain (Loss)
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Net loss attributable to RYAM
Net loss attributable to RYAM
Net loss attributable to RYAM
Net Income (Loss) Attributable to Parent
Long-term Debt, Type [Axis]
Long-Term Debt, Type [Axis]
Erroneous Compensation Analysis
Erroneous Compensation Analysis [Text Block]
Statement [Table]
Statement [Table]
Income from discontinued operations, net of tax (Note 3)
Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest
Environmental Remediation Site [Domain]
Environmental Remediation Site [Domain]
Restatement Determination Date:
Restatement Determination Date [Axis]
Schedule of Accumulated Other Comprehensive Loss
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]
Foreign currency translation adjustment
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Other Comprehensive Income (Loss)
Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Table]
Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Table]
Loss from continuing operations attributable to RYAM
Loss from continuing operations attributable to RYAM
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent
Capital expenditures, net of proceeds from sale of property, plant and equipment
Payments for (Proceeds from) Productive Assets
Unrealized (gain) loss on foreign currency
Unrealized Gain (Loss), Foreign Currency Transaction, before Tax
Total consolidated depreciation and amortization
Depreciation, Depletion and Amortization, Including Accelerated Depreciation
Depreciation, Depletion and Amortization, Including Accelerated Depreciation
Pension Benefits Adjustments, Footnote
Pension Benefits Adjustments, Footnote [Text Block]
Biomaterials and other
Biomaterials and Other [Member]
Biomaterials and Other