In millions, except per share items | Dec-31-19 | Dec-31-18 | Dec-31-17 | Dec-31-16 | Dec-31-15 | Dec-31-14 | Dec-31-13 | Dec-31-12 |
| 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K |
ASSETS | | | | | | | | |
Current assets: | | | | | | | | |
Cash and cash equivalents | 34.3 | 72.8 | 68.2 | 91.7 | 78.9 | 24.3 | 94.3 | 90.6 |
Restricted cash | | 1.7 | 6.9 | | | | | |
Trade accounts and other receivables, net | 13.6 | 35.7 | 37.7 | 23.6 | 48.6 | 132.6 | 125.2 | 103.3 |
|
Inventories: | | | | | | | | |
Finished goods | 31.4 | 41.4 | 59.5 | 74.1 | 77.5 | 106.9 | 87.2 | 102.6 |
Raw materials and supplies | 16.3 | 22.6 | 19.5 | 23.0 | 27.0 | 37.5 | 47.0 | 38.1 |
Total inventories | 47.7 | 64.0 | 79.0 | 97.2 | 104.6 | 144.4 | 134.3 | 140.7 |
Prepaid expenses and other current assets | 3.4 | 4.8 | 4.0 | 3.5 | 3.8 | 5.2 | 5.4 | 4.3 |
Income tax receivable | 3.1 | 2.3 | | 1.2 | | 19.7 | 1.9 | |
Total current assets | 102.1 | 181.3 | 195.8 | 217.2 | 285.3 | 337.6 | 371.4 | 349.9 |
Restricted cash | 9.7 | 8.8 | 3.3 | | | | | |
|
Property, plant and equipment: | | | | | | | | |
Land and land improvements | 11.5 | 39.6 | 41.6 | 45.5 | 45.8 | 40.9 | 31.2 | 19.7 |
Land-use and mineral rights | 18.6 | 19.7 | 19.7 | 19.7 | 19.9 | 19.9 | | |
Buildings | 23.0 | 75.8 | 72.4 | 87.3 | 83.5 | 74.9 | 72.7 | 67.9 |
Machinery and equipment | 45.5 | 432.9 | 455.9 | 647.8 | 642.4 | 627.5 | 535.5 | 530.1 |
Construction in progress | 0.0 | 29.1 | 36.1 | 92.7 | 96.1 | 109.4 | 109.7 | 39.6 |
Total property, plant and equipment | 98.6 | 597.1 | 625.7 | 893.0 | 887.6 | 872.6 | 761.9 | 666.8 |
Less accumulated depreciation and amortization | 35.2 | 323.5 | 301.5 | 398.9 | 349.9 | 303.9 | 283.3 | 240.6 |
Net property, plant and equipment | 63.4 | 273.6 | 324.2 | 494.1 | 537.7 | 568.7 | 478.5 | 426.2 |
Goodwill | | 3.5 | 3.5 | 3.5 | 3.5 | 12.2 | 12.2 | 12.2 |
Operating lease right-of-use assets | 9.2 | | | | | | | |
Intangible and other assets, net | 7.1 | 7.2 | 11.4 | 8.6 | 9.9 | 15.7 | 16.9 | 20.6 |
Total assets | 191.5 | 474.4 | 540.6 | 723.5 | 836.4 | 934.2 | 879.0 | 808.9 |
|
LIABILITIES AND SHAREHOLDERS’ EQUITY | | | | | | | | |
Current liabilities: | | | | | | | | |
Accounts payable | 7.6 | 12.2 | 19.4 | 7.8 | 10.7 | 22.9 | 24.6 | 20.1 |
Accrued payroll and benefits | 2.8 | 7.0 | 6.1 | 3.4 | 6.0 | 12.5 | 13.7 | 14.0 |
Accrued freight | 0.6 | 2.4 | 2.3 | 0.6 | | | | |
Accrued utilities | 0.5 | 1.0 | 1.6 | 1.2 | 2.4 | 3.7 | 3.6 | 3.7 |
Other accrued expenses | 18.6 | 14.0 | 10.6 | 7.2 | 8.7 | 7.4 | 8.0 | 7.4 |
Notes payable, related parties | | 27.0 | | 0.6 | | | | |
Long-term debt, current portion, net | 62.5 | 15.7 | | 13.0 | 33.0 | | | |
Operating lease liabilities | 54.7 | | | | | | | |
Other current liabilities | 5.0 | 1.2 | 10.6 | | | | | |
Total current liabilities | 152.2 | 80.6 | 42.4 | 34.8 | 70.3 | 77.4 | 56.7 | 50.8 |
Deferred income taxes | | 1.1 | 0.2 | 1.2 | 63.9 | 80.8 | 53.7 | 45.0 |
Long-term debt, net | | 45.7 | 60.7 | 42.4 | 55.0 | | | |
|
Noncurrent operating lease liabilities | | | | | | | | |
Other long-term liabilities | | 10.8 | 4.4 | 3.4 | 4.9 | | | |
|
Shareholders’ equity: | | | | | | | | |
Preferred stock, par value $0.01 per share, 5,000 shares authorized, none outstanding | | | | | | | | |
Common stock | 0.3 | 0.3 | 0.3 | 0.3 | 0.2 | 0.2 | 0.2 | 0.2 |
Additional paid-in capital | 139.6 | 132.1 | 125.7 | 117.2 | 65.1 | 59.3 | 56.8 | 57.4 |
Retained earnings (accumulated deficit) | -100.6 | 203.9 | 279.8 | 533.4 | 614.7 | 739.5 | 714.8 | 657.4 |
Total shareholders’ equity | 39.3 | 336.3 | 405.8 | 616.6 | 642.3 | 776.1 | 768.6 | 713.1 |
Total liabilities and shareholders’ equity | 191.5 | 474.4 | 540.6 | 723.5 | 836.4 | 934.2 | 879.0 | 808.9 |