| In millions, except per share items | Dec-31-21 | Sep-30-21 | Jun-30-21 | Mar-31-21 | Dec-31-20 | Sep-30-20 | Jun-30-20 | Mar-31-20 |
| | 10-K | 10-Q | 10-Q | 10-Q | 10-K | 10-Q | 10-Q | 10-Q |
| Cash Flows From Operating Activities: | | | | | | | | |
| Net income (loss) | 13.0 | 58.0 | 16.0 | -90.0 | -90.0 | -31.0 | -34.0 | 54.0 |
| Adjustments to reconcile net income (loss) to net cash from (used in) operating activities: | | | | | | | | |
| Depreciation and amortization | 17.0 | 18.0 | 17.0 | 102.0 | 87.0 | 21.0 | 22.0 | 23.0 |
| Noncash restructuring charges | 3.0 | | | 8.0 | | | | |
| Net periodic pension cost (income) | -6.0 | -6.0 | -5.0 | -6.0 | -4.0 | -3.0 | -5.0 | -4.0 |
| Pension plan contributions | | -9.0 | -9.0 | -7.0 | -2.0 | -29.0 | -10.0 | -8.0 |
| Amortization of debt issuance cost | | | 1.0 | | | | | |
| Gain on Sale of Androscoggin/Stevens Point Mills | | | | | -94.0 | | 88.0 | -88.0 |
| Loss on Sale of Duluth Mill | | | 3.0 | | | | | |
| Equity award expense | 2.0 | 1.0 | 1.0 | 1.0 | | 1.0 | 2.0 | 2.0 |
| (Gain) loss on sale or disposal of assets | | | | | 1.0 | 3.0 | | |
| Gain on insurance recoveries | | -6.0 | | | | | | |
| Deferred taxes | 26.0 | -17.0 | 2.0 | -14.0 | -23.0 | -9.0 | -3.0 | 26.0 |
| Changes in assets and liabilities: | | | | | | | | |
| Accounts receivable, net | 6.0 | -4.0 | -15.0 | -10.0 | 23.0 | -9.0 | 44.0 | -26.0 |
| Inventories | 13.0 | 19.0 | 44.0 | 16.0 | 89.0 | 51.0 | -37.0 | -24.0 |
| Prepaid expenses and other assets | 5.0 | 1.0 | -5.0 | 1.0 | -2.0 | 2.0 | -2.0 | |
| Accounts payable | -14.0 | 18.0 | 8.0 | 1.0 | -18.0 | -28.0 | | -18.0 |
| Accrued and other liabilities | -19.0 | 6.0 | -3.0 | -3.0 | 7.0 | 7.0 | -5.0 | -14.0 |
| Net cash provided by (used in) operating activities | 47.0 | 79.0 | 55.0 | -1.0 | 67.0 | -24.0 | -28.0 | -77.0 |
| |
| Cash Flows From Investing Activities: | | | | | | | | |
| Proceeds from sale of assets | 1.0 | | | 1.0 | 5.0 | 1.0 | | |
| Capital expenditures | -28.0 | -20.0 | -14.0 | -4.0 | -5.0 | -6.0 | -15.0 | -22.0 |
| Net proceeds from Sale of Duluth Mill | | | 6.0 | | | | | |
| Proceeds from insurance recoveries | | 6.0 | | | | | | |
| Recognition of deposits and net proceeds from sale of Luke Mill equipment | | | 10.0 | | | | | |
| Net proceeds from Sale of Androscoggin/Stevens Point Mills | | | | | 7.0 | -2.0 | | 340.0 |
| Net cash provided by (used in) investing activities | -27.0 | -14.0 | 3.0 | -4.0 | 7.0 | -7.0 | -15.0 | 318.0 |
| |
| Cash Flows From Financing Activities: | | | | | | | | |
| Borrowings on ABL Facility | | | | | | | | 36.0 |
| Payments on ABL Facility | | | | | | | | -36.0 |
| Principal payment on finance lease obligations | -1.0 | | | | -1.0 | | | |
| Repurchase of common stock | -1.0 | -12.0 | -57.0 | -10.0 | -7.0 | | -20.0 | -7.0 |
| Acquisition of treasury stock | -1.0 | -12.0 | -57.0 | -10.0 | -7.0 | | -20.0 | -7.0 |
| Dividends paid to stockholders | -3.0 | -3.0 | -3.0 | -3.0 | -3.0 | -105.0 | -3.0 | |
| Debt issuance costs | | | | | | | | |
| Net cash provided by (used in) financing activities | -14.0 | -16.0 | -59.0 | -14.0 | -10.0 | -105.0 | -24.0 | -7.0 |
| Change in Cash and cash equivalents and restricted cash | 6.0 | 49.0 | -1.0 | -19.0 | 64.0 | -136.0 | -67.0 | 234.0 |
| |
| Supplementary cash flow disclosures: | | | | | | | | |
| Total interest paid | | | 1.0 | | | | | |
| Total income taxes paid | | | | | | | | |
| Noncash investing and financing activities: | | | | | | | | |