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Guarantor Infromation (Balance Sheet) (Details) - USD ($) $ in Thousands | Mar. 31, 2017 | Dec. 31, 2016 | Mar. 31, 2016 | Dec. 31, 2015
--- | --- | --- | --- | ---
ASSETS |  |  |  |
Cash and cash equivalents | $ 18,481 | $ 11,610 | $ 9,832 | $ 6,927
Accounts receivable - affiliates | 0 | 0 |  |
Accounts receivable - trade | 74,659 | 80,568 |  |
Inventories | 159,393 | 156,111 |  |
Prepaid expenses and other current assets | 22,436 | 21,665 |  |
Current assets of discontinued operations | 53,812 | 60,979 |  |
Total current assets | 328,781 | 330,933 |  |
Investment in affiliates | 0 | 0 |  |
Net property, plant and equipment | 504,805 | 508,855 |  |
Deferred income taxes | 20,315 | 19,803 |  |
Goodwill | 171,117 | 171,117 |  |
Notes receivable - affiliate | 0 | 0 |  |
Other assets | 138,609 | 141,568 |  |
Long-term assets of discontinued operations |  | 0 |  |
Total assets | 1,163,627 | 1,172,276 |  |
LIABILITIES AND STOCKHOLDERS' EQUITY |  |  |  |
Accounts payable - affiliate | 0 | 0 |  |
Accounts payable - trade | 44,718 | 47,663 |  |
Short-term debt | 10,356 | 8,852 |  |
Accrued income and other taxes | 5,909 | 5,256 |  |
Other accrued liabilities | 33,717 | 30,594 |  |
Short-term liabilities of discontinued operations | 17,316 | 20,042 |  |
Total current liabilities | 112,016 | 112,407 |  |
Long-term debt - affiliate | 0 | 0 |  |
Long-term debt - third party | 369,246 | 356,580 |  |
Other long-term obligations | 81,168 | 82,148 |  |
Deferred income taxes | 44,276 | 42,906 |  |
Long-term liabilities of discontinued operations | 1,040 | 850 |  |
Total stockholders' equity | 555,881 | 577,385 |  |
Total liabilities and stockholders’ equity | 1,163,627 | 1,172,276 |  |
Consolidating Entries and Eliminations |  |  |  |
ASSETS |  |  |  |
Cash and cash equivalents | 0 | 0 | 0 | 0
Accounts receivable - affiliates | (79,180) | (74,859) |  |
Accounts receivable - trade | 0 | 0 |  |
Inventories |  | 0 |  |
Prepaid expenses and other current assets | 0 | 0 |  |
Current assets of discontinued operations | (3,147) | (4,477) |  |
Total current assets | (82,327) | (79,336) |  |
Investment in affiliates | (1,426,180) | (1,445,976) |  |
Net property, plant and equipment | 0 | 0 |  |
Deferred income taxes | 0 | 0 |  |
Goodwill | 0 | 0 |  |
Notes receivable - affiliate | (49,380) | (49,003) |  |
Other assets | 0 | 0 |  |
Long-term assets of discontinued operations |  | 0 |  |
Total assets | (1,557,887) | (1,574,315) |  |
LIABILITIES AND STOCKHOLDERS' EQUITY |  |  |  |
Accounts payable - affiliate | (79,180) | (74,859) |  |
Accounts payable - trade | 0 | 0 |  |
Short-term debt | 0 | 0 |  |
Accrued income and other taxes | 0 | 0 |  |
Other accrued liabilities | 0 | 0 |  |
Short-term liabilities of discontinued operations | (3,147) | (4,477) |  |
Total current liabilities | (82,327) | (79,336) |  |
Long-term debt - affiliate | (49,380) | (49,003) |  |
Long-term debt - third party | 0 | 0 |  |
Other long-term obligations | 0 | 0 |  |
Deferred income taxes | 0 | 0 |  |
Long-term liabilities of discontinued operations | 0 | 0 |  |
Total stockholders' equity | (1,426,180) | (1,445,976) |  |
Total liabilities and stockholders’ equity | (1,557,887) | (1,574,315) |  |
Parent |  |  |  |
ASSETS |  |  |  |
Cash and cash equivalents | 0 | 0 | 0 | 0
Accounts receivable - affiliates | 51,592 | 51,592 |  |
Accounts receivable - trade | 0 | 0 |  |
Inventories | 0 | 0 |  |
Prepaid expenses and other current assets | 1,440 | 1,350 |  |
Current assets of discontinued operations | 0 | 0 |  |
Total current assets | 53,032 | 52,942 |  |
Investment in affiliates | 829,921 | 844,379 |  |
Net property, plant and equipment | 0 | 0 |  |
Deferred income taxes | 0 | 0 |  |
Goodwill | 0 | 0 |  |
Notes receivable - affiliate |  | 0 |  |
Other assets | 0 | 0 |  |
Long-term assets of discontinued operations |  | 0 |  |
Total assets | 882,953 | 897,321 |  |
LIABILITIES AND STOCKHOLDERS' EQUITY |  |  |  |
Accounts payable - affiliate | 1,184 | 806 |  |
Accounts payable - trade | 964 | 964 |  |
Short-term debt | 0 | 0 |  |
Accrued income and other taxes | 0 | 0 |  |
Other accrued liabilities | 7,225 | 2,444 |  |
Short-term liabilities of discontinued operations | 0 | 0 |  |
Total current liabilities | 9,373 | 4,214 |  |
Long-term debt - affiliate | 41,967 | 41,590 |  |
Long-term debt - third party | 275,732 | 274,132 |  |
Other long-term obligations | 0 | 0 |  |
Deferred income taxes | 0 | 0 |  |
Long-term liabilities of discontinued operations | 0 | 0 |  |
Total stockholders' equity | 555,881 | 577,385 |  |
Total liabilities and stockholders’ equity | 882,953 | 897,321 |  |
Guarantors |  |  |  |
ASSETS |  |  |  |
Cash and cash equivalents | 663 | 636 | 1,177 | 646
Accounts receivable - affiliates | 10,104 | 3,624 |  |
Accounts receivable - trade | 6,775 | 7,518 |  |
Inventories | 44,198 | 44,563 |  |
Prepaid expenses and other current assets | 4,260 | 4,853 |  |
Current assets of discontinued operations | 43,380 | 51,160 |  |
Total current assets | 109,380 | 112,354 |  |
Investment in affiliates | 596,259 | 601,597 |  |
Net property, plant and equipment | 187,936 | 191,503 |  |
Deferred income taxes | 0 | 0 |  |
Goodwill | 70,399 | 70,399 |  |
Notes receivable - affiliate | 49,380 | 49,003 |  |
Other assets | 67,706 | 70,767 |  |
Long-term assets of discontinued operations |  | 0 |  |
Total assets | 1,081,060 | 1,095,623 |  |
LIABILITIES AND STOCKHOLDERS' EQUITY |  |  |  |
Accounts payable - affiliate | 68,734 | 71,243 |  |
Accounts payable - trade | 8,372 | 8,033 |  |
Short-term debt | 4,362 | 3,062 |  |
Accrued income and other taxes | 1,097 | 2,095 |  |
Other accrued liabilities | 8,930 | 12,205 |  |
Short-term liabilities of discontinued operations | 16,137 | 20,381 |  |
Total current liabilities | 107,632 | 117,019 |  |
Long-term debt - affiliate | 0 | 0 |  |
Long-term debt - third party | 92,737 | 81,695 |  |
Other long-term obligations | 48,869 | 50,943 |  |
Deferred income taxes | 1,037 | 909 |  |
Long-term liabilities of discontinued operations | 864 | 678 |  |
Total stockholders' equity | 829,921 | 844,379 |  |
Total liabilities and stockholders’ equity | 1,081,060 | 1,095,623 |  |
Non-Guarantors |  |  |  |
ASSETS |  |  |  |
Cash and cash equivalents | 17,818 | 10,974 | $ 8,655 | $ 6,281
Accounts receivable - affiliates | 17,484 | 19,643 |  |
Accounts receivable - trade | 67,884 | 73,050 |  |
Inventories | 115,195 | 111,548 |  |
Prepaid expenses and other current assets | 16,736 | 15,462 |  |
Current assets of discontinued operations | 13,579 | 14,296 |  |
Total current assets | 248,696 | 244,973 |  |
Investment in affiliates | 0 | 0 |  |
Net property, plant and equipment | 316,869 | 317,352 |  |
Deferred income taxes | 20,315 | 19,803 |  |
Goodwill | 100,718 | 100,718 |  |
Notes receivable - affiliate | 0 | 0 |  |
Other assets | 70,903 | 70,801 |  |
Long-term assets of discontinued operations |  | 0 |  |
Total assets | 757,501 | 753,647 |  |
LIABILITIES AND STOCKHOLDERS' EQUITY |  |  |  |
Accounts payable - affiliate | 9,262 | 2,810 |  |
Accounts payable - trade | 35,382 | 38,666 |  |
Short-term debt | 5,994 | 5,790 |  |
Accrued income and other taxes | 4,812 | 3,161 |  |
Other accrued liabilities | 17,562 | 15,945 |  |
Short-term liabilities of discontinued operations | 4,326 | 4,138 |  |
Total current liabilities | 77,338 | 70,510 |  |
Long-term debt - affiliate | 7,413 | 7,413 |  |
Long-term debt - third party | 777 | 753 |  |
Other long-term obligations | 32,299 | 31,205 |  |
Deferred income taxes | 43,239 | 41,997 |  |
Long-term liabilities of discontinued operations | 176 | 172 |  |
Total stockholders' equity | 596,259 | 601,597 |  |
Total liabilities and stockholders’ equity | $ 757,501 | $ 753,647 |  |

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