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Condensed consolidating financial information (Tables) | 12 Months Ended
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Dec. 31, 2017
Condensed Financial Information of Parent Company Only Disclosure [Abstract] |
Condensed Consolidating Statements of Comprehensive Income (Loss) |
Condensed Consolidating Statements of Comprehensive Income (Loss)
For the year ended December 31, 2017
|  | The Company |  | Combined Guarantor Subsidiaries |  | Combined Non-Guarantor Subsidiaries |  | Consolidating Adjustments |  | Total Consolidated
NET SALES: |  |  |  |  |  |  |  |  |  |
Related parties |  | $ | — |  |  | $ | 547,458 |  |  | $ | 650,618 |  |  | $ | — |  |  | $ | 1,198,076 |
Other customers |  | — |  |  | 390,875 |  |  | 129 |  |  | — |  |  | 391,004 |
Total net sales |  | — |  |  | 938,333 |  |  | 650,747 |  |  | — |  |  | 1,589,080 |
Cost of goods sold |  | — |  |  | 888,176 |  |  | 572,299 |  |  | — |  |  | 1,460,475 |
Gross profit |  | — |  |  | 50,157 |  |  | 78,448 |  |  | — |  |  | 128,605 |
Selling, general and administrative expenses |  | 27,846 |  |  | 12,905 |  |  | 4,695 |  |  | — |  |  | 45,446 |
Helguvik (gains) |  | — |  |  | — |  |  | (7,310 | ) |  | — |  |  | (7,310 | )
Ravenswood (gains) |  | — |  |  | — |  |  | (5,500 | ) |  | — |  |  | (5,500 | )
Other operating expense - net |  | — |  |  | — |  |  | 2,111 |  |  | — |  |  | 2,111 |
Operating income (loss) |  | (27,846 | ) |  | 37,252 |  |  | 84,452 |  |  | — |  |  | 93,858 |
Interest expense - third parties |  | (20,397 | ) |  | (1,554 | ) |  | (223 | ) |  | — |  |  | (22,174 | )
Interest income (expense) - affiliates |  | 37,184 |  |  | 8,760 |  |  | (45,944 | ) |  | — |  |  | — |
Interest income - third parties |  | 482 |  |  | — |  |  | 915 |  |  | — |  |  | 1,397 |
Net gain (loss) on forward and derivative contracts |  | — |  |  | (17,073 | ) |  | 524 |  |  | — |  |  | (16,549 | )
Other income (expense) - net |  | 986 |  |  | 2,976 |  |  | (5,123 | ) |  | — |  |  | (1,161 | )
Income (loss) before income taxes and equity in earnings of subsidiaries and joint ventures |  | (9,591 | ) |  | 30,361 |  |  | 34,601 |  |  | — |  |  | 55,371 |
Income tax (expense) benefit |  | 457 |  |  | 972 |  |  | (9,012 | ) |  | — |  |  | (7,583 | )
Income (loss) before equity in earnings of subsidiaries and joint ventures |  | (9,134 | ) |  | 31,333 |  |  | 25,589 |  |  | — |  |  | 47,788 |
Equity in earnings of subsidiaries and joint ventures |  | 57,714 |  |  | 2,703 |  |  | 792 |  |  | (60,417 | ) |  | 792 |
Net income |  | $ | 48,580 |  |  | $ | 34,036 |  |  | $ | 26,381 |  |  | $ | (60,417 | ) |  | $ | 48,580 |
Other comprehensive income before income tax effect |  | 23,678 |  |  | 12,722 |  |  | 1,457 |  |  | (14,179 | ) |  | 23,678 |
Income tax effect |  | (1,527 | ) |  | — |  |  | 37 |  |  | (37 | ) |  | (1,527 | )
Other comprehensive income |  | 22,151 |  |  | 12,722 |  |  | 1,494 |  |  | (14,216 | ) |  | 22,151 |
Total comprehensive income |  | $ | 70,731 |  |  | $ | 46,758 |  |  | $ | 27,875 |  |  | $ | (74,633 | ) |  | $ | 70,731 |
Condensed Consolidating Statements of Comprehensive Income (Loss)
For the year ended December 31, 2016
|  | The Company |  | Combined Guarantor Subsidiaries |  | Combined Non-Guarantor Subsidiaries |  | Consolidating Adjustments |  | Total Consolidated
NET SALES: |  |  |  |  |  |  |  |  |  |
Related parties |  | $ | — |  |  | $ | 668,486 |  |  | $ | 510,145 |  |  | $ | — |  |  | $ | 1,178,631 |
Other customers |  | — |  |  | 140,426 |  |  | 37 |  |  | — |  |  | 140,463 |
Total net sales |  | — |  |  | 808,912 |  |  | 510,182 |  |  | — |  |  | 1,319,094 |
Cost of goods sold |  | — |  |  | 862,632 |  |  | 467,504 |  |  | — |  |  | 1,330,136 |
Gross profit (loss) |  | — |  |  | (53,720 | ) |  | 42,678 |  |  | — |  |  | (11,042 | )
Selling, general and administrative expenses |  | 20,704 |  |  | 9,853 |  |  | 9,707 |  |  | — |  |  | 40,264 |
Helguvik losses |  | — |  |  | — |  |  | 152,220 |  |  | — |  |  | 152,220 |
Ravenswood losses |  | — |  |  | — |  |  | 26,830 |  |  | — |  |  | 26,830 |
Other operating expense - net |  | — |  |  | — |  |  | 3,857 |  |  | — |  |  | 3,857 |
Operating loss |  | (20,704 | ) |  | (63,573 | ) |  | (149,936 | ) |  | — |  |  | (234,213 | )
Interest expense - third parties |  | (20,378 | ) |  | (1,659 | ) |  | (179 | ) |  | — |  |  | (22,216 | )
Interest income (expense) - affiliates |  | 39,211 |  |  | 8,107 |  |  | (47,318 | ) |  | — |  |  | — |
Interest income - third parties |  | 182 |  |  | 10 |  |  | 566 |  |  | — |  |  | 758 |
Net gain on forward and derivative contracts |  | — |  |  | 3,487 |  |  | — |  |  | — |  |  | 3,487 |
Other income (expense) - net |  | 1,239 |  |  | 218 |  |  | (138 | ) |  | — |  |  | 1,319 |
Loss before income taxes and equity in earnings (loss) of subsidiaries and joint ventures |  | (450 | ) |  | (53,410 | ) |  | (197,005 | ) |  | — |  |  | (250,865 | )
Income tax (expense) benefit |  | 1,925 |  |  | — |  |  | (4,749 | ) |  | — |  |  | (2,824 | )
Income (loss) before equity in earnings (loss) of subsidiaries and joint ventures |  | 1,475 |  |  | (53,410 | ) |  | (201,754 | ) |  | — |  |  | (253,689 | )
Equity in earnings (loss) of subsidiaries and joint ventures |  | (253,890 | ) |  | 12,463 |  |  | 1,274 |  |  | 241,427 |  |  | 1,274 |
Net loss |  | $ | (252,415 | ) |  | $ | (40,947 | ) |  | $ | (200,480 | ) |  | $ | 241,427 |  |  | $ | (252,415 | )
Other comprehensive income before income tax effect |  | 288 |  |  | 1,868 |  |  | 5,134 |  |  | (7,002 | ) |  | 288 |
Income tax effect |  | (1,531 | ) |  | — |  |  | (24 | ) |  | 24 |  |  | (1,531 | )
Other comprehensive income (loss) |  | (1,243 | ) |  | 1,868 |  |  | 5,110 |  |  | (6,978 | ) |  | (1,243 | )
Total comprehensive loss |  | $ | (253,658 | ) |  | $ | (39,079 | ) |  | $ | (195,370 | ) |  | $ | 234,449 |  |  | $ | (253,658 | )
Condensed Consolidating Statements of Comprehensive Income (Loss)
For the year ended December 31, 2015
|  | The Company |  | Combined Guarantor Subsidiaries |  | Combined Non-Guarantor Subsidiaries |  | Consolidating Adjustments |  | Total Consolidated
NET SALES: |  |  |  |  |  |  |  |  |  |
Related parties |  | $ | — |  |  | $ | 1,277,474 |  |  | $ | 632,597 |  |  | $ | (42,360 | ) |  | $ | 1,867,711 |
Other customers |  | — |  |  | 82,327 |  |  | 43 |  |  | (224 | ) |  | 82,146 |
Total net sales |  | — |  |  | 1,359,801 |  |  | 632,640 |  |  | (42,584 | ) |  | 1,949,857 |
Cost of goods sold |  | — |  |  | 1,388,400 |  |  | 564,380 |  |  | (44,236 | ) |  | 1,908,544 |
Gross profit (loss) |  | — |  |  | (28,599 | ) |  | 68,260 |  |  | 1,652 |  |  | 41,313 |
Selling, general and administrative expenses |  | 28,000 |  |  | 8,798 |  |  | 5,317 |  |  | — |  |  | 42,115 |
Ravenswood losses |  | — |  |  | — |  |  | 30,850 |  |  | — |  |  | 30,850 |
Other operating expense - net |  | — |  |  | — |  |  | 7,436 |  |  | — |  |  | 7,436 |
Operating income (loss) |  | (28,000 | ) |  | (37,397 | ) |  | 24,657 |  |  | 1,652 |  |  | (39,088 | )
Interest expense - third parties |  | (20,201 | ) |  | (1,567 | ) |  | (186 | ) |  | — |  |  | (21,954 | )
Interest income (expense) - affiliates |  | 37,626 |  |  | — |  |  | (37,626 | ) |  | — |  |  | — |
Interest income - third parties |  | 65 |  |  | 4 |  |  | 270 |  |  | — |  |  | 339 |
Net gain on forward and derivative contracts |  | — |  |  | 1,411 |  |  | 189 |  |  | — |  |  | 1,600 |
Unrealized gain on fair value of contingent consideration |  | — |  |  | 18,337 |  |  | — |  |  | — |  |  | 18,337 |
Other income (expense) - net |  | 1,356 |  |  | (658 | ) |  | 2,356 |  |  | (3,410 | ) |  | (356 | )
Loss before income taxes and equity in earnings (loss) of subsidiaries and joint ventures |  | (9,154 | ) |  | (19,870 | ) |  | (10,340 | ) |  | (1,758 | ) |  | (41,122 | )
Income tax (expense) benefit |  | 2,140 |  |  | — |  |  | (11,416 | ) |  | — |  |  | (9,276 | )
Loss before equity in earnings (loss) of subsidiaries and joint ventures |  | (7,014 | ) |  | (19,870 | ) |  | (21,756 | ) |  | (1,758 | ) |  | (50,398 | )
BHH impairment |  | — |  |  | — |  |  | (11,584 | ) |  | — |  |  | (11,584 | )
Equity in earnings (loss) of subsidiaries and joint ventures |  | (52,296 | ) |  | — |  |  | 2,672 |  |  | 52,296 |  |  | 2,672 |
Net loss |  | $ | (59,310 | ) |  | $ | (19,870 | ) |  | $ | (30,668 | ) |  | $ | 50,538 |  |  | $ | (59,310 | )
Other comprehensive income (loss) before income tax effect |  | 6,568 |  |  | 14,754 |  |  | (1,114 | ) |  | (13,640 | ) |  | 6,568 |
Income tax effect |  | (1,536 | ) |  | — |  |  | 33 |  |  | (33 | ) |  | (1,536 | )
Other comprehensive income (loss) |  | 5,032 |  |  | 14,754 |  |  | (1,081 | ) |  | (13,673 | ) |  | 5,032 |
Total comprehensive loss |  | $ | (54,278 | ) |  | $ | (5,116 | ) |  | $ | (31,749 | ) |  | $ | 36,865 |  |  | $ | (54,278 | )
Condensed Consolidating Balance Sheet |
Condensed Consolidating Balance Sheet
As of December 31, 2017
|  | The Company |  | Combined Guarantor Subsidiaries |  | Combined Non-Guarantor Subsidiaries |  | Consolidating Adjustments |  | Total Consolidated
Cash & cash equivalents |  | $ | 64,384 |  |  | $ | (132 | ) |  | $ | 102,959 |  |  | $ | — |  |  | $ | 167,211 |
Restricted cash |  | — |  |  | 801 |  |  | 47 |  |  | — |  |  | 848 |
Accounts receivable - net |  | — |  |  | 42,792 |  |  | 279 |  |  | — |  |  | 43,071 |
Due from affiliates |  | 42 |  |  | 10,312 |  |  | 12 |  |  | — |  |  | 10,366 |
Inventories |  | 181 |  |  | 205,156 |  |  | 112,132 |  |  | — |  |  | 317,469 |
Prepaid and other current assets |  | 3,330 |  |  | 754 |  |  | 10,625 |  |  | — |  |  | 14,709 |
Total current assets |  | 67,937 |  |  | 259,683 |  |  | 226,054 |  |  | — |  |  | 553,674 |
Property, plant and equipment - net |  | 19,381 |  |  | 295,865 |  |  | 656,670 |  |  | — |  |  | 971,916 |
Investment in subsidiaries |  | 751,820 |  |  | 53,942 |  |  | — |  |  | (805,762 | ) |  | — |
Due from affiliates - long term |  | 513,328 |  |  | 349,572 |  |  | 9,430 |  |  | (872,330 | ) |  | — |
Other assets |  | 27,954 |  |  | 34,162 |  |  | 25,915 |  |  | (31,980 | ) |  | 56,051 |
TOTAL |  | $ | 1,380,420 |  |  | $ | 993,224 |  |  | $ | 918,069 |  |  | $ | (1,710,072 | ) |  | $ | 1,581,641 |
Accounts payable, trade |  | $ | 6,297 |  |  | $ | 51,394 |  |  | $ | 32,240 |  |  | $ | — |  |  | $ | 89,931 |
Due to affiliates |  | 421 |  |  | 2,563 |  |  | 17,385 |  |  | — |  |  | 20,369 |
Accrued and other current liabilities |  | 15,973 |  |  | 19,301 |  |  | 26,124 |  |  | — |  |  | 61,398 |
Accrued employee benefits costs |  | 1,917 |  |  | 8,263 |  |  | 824 |  |  | — |  |  | 11,004 |
Industrial revenue bonds |  | — |  |  | 7,815 |  |  | — |  |  | — |  |  | 7,815 |
Total current liabilities |  | 24,608 |  |  | 89,336 |  |  | 76,573 |  |  | — |  |  | 190,517 |
Senior notes payable |  | 248,153 |  |  | — |  |  | — |  |  | — |  |  | 248,153 |
Accrued pension benefits costs - less current portion |  | 39,462 |  |  | 18,303 |  |  | 13,144 |  |  | (31,980 | ) |  | 38,929 |
Accrued postretirement benefits costs - less current portion |  | 879 |  |  | 110,394 |  |  | 1,723 |  |  | — |  |  | 112,996 |
Other liabilities |  | 3,523 |  |  | 31,991 |  |  | 22,413 |  |  | — |  |  | 57,927 |
Due to affiliates - long term |  | 234,137 |  |  | 53,812 |  |  | 584,381 |  |  | (872,330 | ) |  | — |
Deferred taxes |  | 15 |  |  | 1,748 |  |  | 101,713 |  |  | — |  |  | 103,476 |
Total noncurrent liabilities |  | 526,169 |  |  | 216,248 |  |  | 723,374 |  |  | (904,310 | ) |  | 561,481 |
Preferred stock |  | 1 |  |  | — |  |  | — |  |  | — |  |  | 1 |
Common stock |  | 947 |  |  | 1 |  |  | 59 |  |  | (60 | ) |  | 947 |
Other shareholders' equity |  | 828,695 |  |  | 687,639 |  |  | 118,063 |  |  | (805,702 | ) |  | 828,695 |
Total shareholders' equity |  | 829,643 |  |  | 687,640 |  |  | 118,122 |  |  | (805,762 | ) |  | 829,643 |
TOTAL |  | $ | 1,380,420 |  |  | $ | 993,224 |  |  | $ | 918,069 |  |  | $ | (1,710,072 | ) |  | $ | 1,581,641 |
Condensed Consolidating Balance Sheet
As of December 31, 2016
|  | The Company |  | Combined Guarantor Subsidiaries |  | Combined Non-Guarantor Subsidiaries |  | Consolidating Adjustments |  | Total Consolidated
Cash & cash equivalents |  | $ | 36,670 |  |  | $ | (255 | ) |  | $ | 95,988 |  |  | $ | — |  |  | $ | 132,403 |
Restricted cash |  | — |  |  | 794 |  |  | 256 |  |  | — |  |  | 1,050 |
Accounts receivable - net |  | 167 |  |  | 11,883 |  |  | 382 |  |  | — |  |  | 12,432 |
Due from affiliates |  | 42 |  |  | 16,606 |  |  | 3 |  |  | — |  |  | 16,651 |
Inventories |  | 180 |  |  | 146,689 |  |  | 86,694 |  |  | — |  |  | 233,563 |
Prepaid and other current assets |  | 6,838 |  |  | 5,699 |  |  | 9,673 |  |  | — |  |  | 22,210 |
Assets held for sale |  | — |  |  | — |  |  | 22,313 |  |  | — |  |  | 22,313 |
Total current assets |  | 43,897 |  |  | 181,416 |  |  | 215,309 |  |  | — |  |  | 440,622 |
Property, plant and equipment - net |  | 12,311 |  |  | 328,069 |  |  | 685,905 |  |  | — |  |  | 1,026,285 |
Investment in subsidiaries |  | 702,659 |  |  | 51,240 |  |  | — |  |  | (753,899 | ) |  | — |
Due from affiliates - long term |  | 529,873 |  |  | 346,893 |  |  | 1,792 |  |  | (878,558 | ) |  | — |
Other assets |  | 28,215 |  |  | 49,331 |  |  | 27,596 |  |  | (31,722 | ) |  | 73,420 |
TOTAL |  | $ | 1,316,955 |  |  | $ | 956,949 |  |  | $ | 930,602 |  |  | $ | (1,664,179 | ) |  | $ | 1,540,327 |
Accounts payable, trade |  | $ | 6,125 |  |  | $ | 52,921 |  |  | $ | 35,914 |  |  | $ | — |  |  | $ | 94,960 |
Due to affiliates |  | 417 |  |  | 9,641 |  |  | 5,310 |  |  | — |  |  | 15,368 |
Accrued and other current liabilities |  | 11,950 |  |  | 17,744 |  |  | 20,406 |  |  | — |  |  | 50,100 |
Accrued employee benefits costs |  | 1,932 |  |  | 8,317 |  |  | 668 |  |  | — |  |  | 10,917 |
Industrial revenue bonds |  | — |  |  | 7,815 |  |  | — |  |  | — |  |  | 7,815 |
Total current liabilities |  | 20,424 |  |  | 96,438 |  |  | 62,298 |  |  | — |  |  | 179,160 |
Senior notes payable |  | 247,699 |  |  | — |  |  | — |  |  | — |  |  | 247,699 |
Accrued pension benefits costs - less current portion |  | 46,390 |  |  | 20,167 |  |  | 14,658 |  |  | (31,722 | ) |  | 49,493 |
Accrued postretirement benefits costs - less current portion |  | 4,380 |  |  | 120,242 |  |  | 1,733 |  |  | — |  |  | 126,355 |
Other liabilities |  | 4,160 |  |  | 30,920 |  |  | 36,946 |  |  | — |  |  | 72,026 |
Due to affiliates - long term |  | 237,247 |  |  | 42,609 |  |  | 598,702 |  |  | (878,558 | ) |  | — |
Deferred taxes |  | — |  |  | 2,735 |  |  | 106,204 |  |  | — |  |  | 108,939 |
Total noncurrent liabilities |  | 539,876 |  |  | 216,673 |  |  | 758,243 |  |  | (910,280 | ) |  | 604,512 |
Preferred stock |  | 1 |  |  | — |  |  | — |  |  | — |  |  | 1 |
Common stock |  | 944 |  |  | 1 |  |  | 59 |  |  | (60 | ) |  | 944 |
Other shareholders' equity |  | 755,710 |  |  | 643,837 |  |  | 110,002 |  |  | (753,839 | ) |  | 755,710 |
Total shareholders' equity |  | 756,655 |  |  | 643,838 |  |  | 110,061 |  |  | (753,899 | ) |  | 756,655 |
TOTAL |  | $ | 1,316,955 |  |  | $ | 956,949 |  |  | $ | 930,602 |  |  | $ | (1,664,179 | ) |  | $ | 1,540,327 |
Condensed Consolidating Statement of Cash Flows |
Condensed Consolidating Statement of Cash Flows
For the year ended December 31, 2017
|  | The Company |  | Combined Guarantor Subsidiaries |  | Combined Non-Guarantor Subsidiaries |  | Consolidating Adjustments |  | Total Consolidated
Net cash provided by (used in) operating activities |  | $ | (34,417 | ) |  | $ | (6,993 | ) |  | $ | 96,123 |  |  | $ | (2,954 | ) |  | $ | 51,759 |
Purchase of property, plant and equipment |  | (10,889 | ) |  | (8,111 | ) |  | (12,839 | ) |  | — |  |  | (31,839 | )
Proceeds from sale of property, plant and equipment |  | — |  |  | 899 |  |  | 13,585 |  |  | — |  |  | 14,484 |
Intercompany transactions |  | 75,726 |  |  | 6,081 |  |  | (7,638 | ) |  | (74,169 | ) |  | — |
Net cash provided by (used in) investing activities |  | 64,837 |  |  | (1,131 | ) |  | (6,892 | ) |  | (74,169 | ) |  | (17,355 | )
Borrowings under revolving credit facilities |  | 1,281 |  |  | — |  |  | — |  |  | — |  |  | 1,281 |
Repayments under revolving credit facilities |  | (1,281 | ) |  | — |  |  | — |  |  | — |  |  | (1,281 | )
Issuance of common stock |  | 404 |  |  | — |  |  | — |  |  | — |  |  | 404 |
Intercompany transactions |  | (3,110 | ) |  | 8,247 |  |  | (82,260 | ) |  | 77,123 |  |  | — |
Net cash provided by (used in) financing activities |  | (2,706 | ) |  | 8,247 |  |  | (82,260 | ) |  | 77,123 |  |  | 404 |
CHANGE IN CASH AND CASH EQUIVALENTS |  | 27,714 |  |  | 123 |  |  | 6,971 |  |  | — |  |  | 34,808 |
Cash and cash equivalents, beginning of period |  | 36,670 |  |  | (255 | ) |  | 95,988 |  |  | — |  |  | 132,403 |
Cash and cash equivalents, end of period |  | $ | 64,384 |  |  | $ | (132 | ) |  | $ | 102,959 |  |  | $ | — |  |  | $ | 167,211 |
Condensed Consolidating Statement of Cash Flows
For the year ended December 31, 2016
|  | The Company |  | Combined Guarantor Subsidiaries |  | Combined Non-Guarantor Subsidiaries |  | Consolidating Adjustments |  | Total Consolidated
Net cash provided by (used in) operating activities |  | $ | (63,446 | ) |  | $ | 19,019 |  |  | $ | 82,600 |  |  | $ | — |  |  | $ | 38,173 |
Purchase of property, plant and equipment |  | (1,425 | ) |  | (7,807 | ) |  | (12,712 | ) |  | — |  |  | (21,944 | )
Proceeds from sale of property, plant and equipment |  | — |  |  | — |  |  | 1,040 |  |  | — |  |  | 1,040 |
Restricted and other cash deposits |  | — |  |  | (3 | ) |  | (256 | ) |  | — |  |  | (259 | )
Intercompany transactions |  | 27,761 |  |  | (15,305 | ) |  | (937 | ) |  | (11,519 | ) |  | — |
Net cash provided by (used in) investing activities |  | 26,336 |  |  | (23,115 | ) |  | (12,865 | ) |  | (11,519 | ) |  | (21,163 | )
Borrowings under revolving credit facilities |  | 1,179 |  |  | — |  |  | — |  |  | — |  |  | 1,179 |
Repayments under revolving credit facilities |  | (1,179 | ) |  | — |  |  | — |  |  | — |  |  | (1,179 | )
Intercompany transactions |  | 15,359 |  |  | 7,488 |  |  | (34,366 | ) |  | 11,519 |  |  | — |
Net cash provided by (used in) financing activities |  | 15,359 |  |  | 7,488 |  |  | (34,366 | ) |  | 11,519 |  |  | — |
CHANGE IN CASH AND CASH EQUIVALENTS |  | (21,751 | ) |  | 3,392 |  |  | 35,369 |  |  | — |  |  | 17,010 |
Cash and cash equivalents, beginning of period |  | 58,421 |  |  | (3,647 | ) |  | 60,619 |  |  | — |  |  | 115,393 |
Cash and cash equivalents, end of period |  | $ | 36,670 |  |  | $ | (255 | ) |  | $ | 95,988 |  |  | $ | — |  |  | $ | 132,403 |
Condensed Consolidating Statement of Cash Flows
For the year ended December 31, 2015
|  | The Company |  | Combined Guarantor Subsidiaries |  | Combined Non-Guarantor Subsidiaries |  | Consolidating Adjustments |  | Total Consolidated
Net cash provided by operating activities |  | $ | 25,423 |  |  | $ | 30,890 |  |  | $ | 65,085 |  |  | $ | (89,532 | ) |  | $ | 31,866 |
Purchase of property, plant and equipment |  | (8,574 | ) |  | (21,477 | ) |  | (24,209 | ) |  | (440 | ) |  | (54,700 | )
Purchase of remaining interest in Mt. Holly smelter |  | 11,313 |  |  | — |  |  | — |  |  | — |  |  | 11,313 |
Proceeds from sale of property, plant and equipment |  | — |  |  | 14 |  |  | — |  |  | — |  |  | 14 |
Restricted and other cash deposits |  | — |  |  | (4 | ) |  | 14 |  |  | — |  |  | 10 |
Intercompany transactions |  | (4,072 | ) |  | — |  |  | — |  |  | 4,072 |  |  | — |
Net cash used in investing activities |  | (1,333 | ) |  | (21,467 | ) |  | (24,195 | ) |  | 3,632 |  |  | (43,363 | )
Borrowings under revolving credit facilities |  | 1,737 |  |  | — |  |  | — |  |  | — |  |  | 1,737 |
Repayments under revolving credit facilities |  | (1,737 | ) |  | — |  |  | — |  |  | — |  |  | (1,737 | )
Repurchase of common stock |  | (36,352 | ) |  | — |  |  | — |  |  | — |  |  | (36,352 | )
Intercompany transactions |  | — |  |  | (11,883 | ) |  | (74,017 | ) |  | 85,900 |  |  | — |
Net cash used in financing activities |  | (36,352 | ) |  | (11,883 | ) |  | (74,017 | ) |  | 85,900 |  |  | (36,352 | )
CHANGE IN CASH AND CASH EQUIVALENTS |  | (12,262 | ) |  | (2,460 | ) |  | (33,127 | ) |  | — |  |  | (47,849 | )
Cash and cash equivalents, beginning of period |  | 70,683 |  |  | (1,187 | ) |  | 93,746 |  |  | — |  |  | 163,242 |
Cash and cash equivalents, end of period |  | $ | 58,421 |  |  | $ | (3,647 | ) |  | $ | 60,619 |  |  | $ | — |  |  | $ | 115,393 |

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