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Condensed consolidating financial information (Tables) | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2013 | Sep. 30, 2012 | Sep. 30, 2013 | Sep. 30, 2012 | Dec. 31, 2012
Condensed Financial Information of Parent Company Only Disclosure [Abstract] |  |  |  |  |
Condensed Consolidating Balance Sheet |  |  |
CONDENSED CONSOLIDATING BALANCE SHEET
As of September 30, 2013
| Combined Guarantor Subsidiaries | Combined Non-Guarantor Subsidiaries | The Company | Reclassifications and Eliminations | Consolidated
Assets: |  |  |  |  |
Cash and cash equivalents | $ | — |  | $ | 64,366 |  | $ | 76,435 |  | $ | — |  | $ | 140,801 |
Restricted cash | 790 |  | 2,483 |  | — |  | — |  | 3,273 |
Accounts receivable — net | 50,157 |  | 1,090 |  | — |  | — |  | 51,247 |
Due from affiliates | 610,588 |  | 39,991 |  | 2,339,683 |  | (2,965,307 | ) | 24,955 |
Inventories | 158,620 |  | 72,885 |  | — |  | — |  | 231,505 |
Prepaid and other current assets | 4,199 |  | 31,456 |  | 5,053 |  | — |  | 40,708 |
Deferred taxes - current portion | — |  | 19,726 |  | — |  | (6 | ) | 19,720 |
Total current assets | 824,354 |  | 231,997 |  | 2,421,171 |  | (2,965,313 | ) | 512,209 |
Investment in subsidiaries | 50,696 |  | — |  | (959,581 | ) | 908,885 |  | — |
Property, plant and equipment — net | 354,595 |  | 883,232 |  | 1,793 |  | (419 | ) | 1,239,201 |
Due from affiliates – less current portion | — |  | 30,479 |  | — |  | (30,479 | ) | — |
Other assets | 17,603 |  | 53,596 |  | 32,274 |  | 4,748 |  | 108,221 |
Total | $ | 1,247,248 |  | $ | 1,199,304 |  | $ | 1,495,657 |  | $ | (2,082,578 | ) | $ | 1,859,631 |
Liabilities: |  |  |  |  |
Accounts payable, trade | $ | 66,212 |  | $ | 38,383 |  | $ | 1,355 |  | $ | — |  | $ | 105,950 |
Due to affiliates | 2,161,803 |  | 135,587 |  | 202,075 |  | (2,427,726 | ) | 71,739 |
Accrued and other current liabilities | 39,678 |  | 13,678 |  | 17,638 |  | 1,927 |  | 72,921 |
Accrued employee benefits costs | 13,495 |  | — |  | 3,565 |  | — |  | 17,060 |
Industrial revenue bonds | 7,815 |  | — |  | — |  | — |  | 7,815 |
Current portion of long-term debt | — |  | — |  | 2,603 |  | — |  | 2,603 |
Total current liabilities | 2,289,003 |  | 187,648 |  | 227,236 |  | (2,425,799 | ) | 278,088 |
Senior notes payable | — |  | — |  | 246,442 |  | — |  | 246,442 |
Revolving credit facility | — |  | — |  | 16,725 |  | — |  | 16,725 |
Accrued pension benefit costs — less current portion | 29,188 |  | — |  | 30,536 |  | — |  | 59,724 |
Accrued postretirement benefit costs — less current portion | 137,388 |  | — |  | 6,637 |  | — |  | 144,025 |
Other liabilities/intercompany loan | 57,871 |  | 572,417 |  | 2,560 |  | (595,664 | ) | 37,184 |
Deferred taxes | — |  | 111,922 |  | — |  | — |  | 111,922 |
Total noncurrent liabilities | 224,447 |  | 684,339 |  | 302,900 |  | (595,664 | ) | 616,022 |
Shareholders’ equity: |  |  |  |  |
Series A Preferred stock | — |  | — |  | 1 |  | — |  | 1 |
Common stock | 60 |  | 12 |  | 935 |  | (72 | ) | 935 |
Additional paid-in capital | 370,467 |  | 169,493 |  | 2,508,456 |  | (539,960 | ) | 2,508,456 |
Treasury stock, at cost | — |  | — |  | (49,924 | ) | — |  | (49,924 | )
Accumulated other comprehensive loss | (133,371 | ) | (1,640 | ) | (138,680 | ) | 135,011 |  | (138,680 | )
Retained earnings (accumulated deficit) | (1,503,358 | ) | 159,452 |  | (1,355,267 | ) | 1,343,906 |  | (1,355,267 | )
Total shareholders’ equity | (1,266,202 | ) | 327,317 |  | 965,521 |  | 938,885 |  | 965,521 |
Total | $ | 1,247,248 |  | $ | 1,199,304 |  | $ | 1,495,657 |  | $ | (2,082,578 | ) | $ | 1,859,631 |
CONDENSED CONSOLIDATING BALANCE SHEET
As of December 31, 2012
| Combined Guarantor Subsidiaries | Combined Non-Guarantor Subsidiaries | The Company | Reclassifications and Eliminations | Consolidated
Assets: |  |  |  |  |
Cash and cash equivalents | $ | — |  | $ | 110,016 |  | $ | 73,960 |  | $ | — |  | $ | 183,976 |
Restricted cash | 258 |  | — |  | — |  | — |  | 258 |
Accounts receivable — net | 38,328 |  | 12,339 |  | — |  | — |  | 50,667 |
Due from affiliates | 604,008 |  | 38,328 |  | 2,391,249 |  | (2,995,715 | ) | 37,870 |
Inventories | 97,847 |  | 62,078 |  | — |  | — |  | 159,925 |
Prepaid and other current assets | 4,421 |  | 30,650 |  | 8,063 |  | (8,159 | ) | 34,975 |
Deferred taxes — current portion | — |  | 17,799 |  | — |  | 1,927 |  | 19,726 |
Total current assets | 744,862 |  | 271,210 |  | 2,473,272 |  | (3,001,947 | ) | 487,397 |
Investment in subsidiaries | 40,335 |  | — |  | (1,039,141 | ) | 998,806 |  | — |
Property, plant and equipment — net | 313,090 |  | 874,559 |  | 916 |  | (351 | ) | 1,188,214 |
Due from affiliates - less current portion | — |  | 3,588 |  | — |  | (3,588 | ) | — |
Other assets | 17,616 |  | 45,474 |  | 37,027 |  | 598 |  | 100,715 |
Total | $ | 1,115,903 |  | $ | 1,194,831 |  | $ | 1,472,074 |  | $ | (2,006,482 | ) | $ | 1,776,326 |
Liabilities: |  |  |  |  |
Accounts payable, trade | $ | 37,301 |  | $ | 37,627 |  | $ | 442 |  | $ | — |  | $ | 75,370 |
Due to affiliates | 2,098,320 |  | 105,945 |  | 193,788 |  | (2,358,316 | ) | 39,737 |
Accrued and other current liabilities | 13,031 |  | 31,332 |  | 1,967 |  | (6,231 | ) | 40,099 |
Accrued employee benefits costs | 15,926 |  | — |  | 2,757 |  | — |  | 18,683 |
Industrial revenue bonds | 7,815 |  | — |  | — |  | — |  | 7,815 |
Total current liabilities | 2,172,393 |  | 174,904 |  | 198,954 |  | (2,364,547 | ) | 181,704 |
Senior notes payable | — |  | — |  | 250,582 |  | — |  | 250,582 |
Accrued pension benefit costs — less current portion | 36,087 |  | — |  | 31,791 |  | — |  | 67,878 |
Accrued postretirement benefit costs — less current portion | 137,184 |  | — |  | 5,921 |  | — |  | 143,105 |
Other liabilities/intercompany loan | 65,377 |  | 614,585 |  | 2,183 |  | (641,983 | ) | 40,162 |
Deferred taxes | — |  | 109,011 |  | — |  | 1,241 |  | 110,252 |
Total noncurrent liabilities | 238,648 |  | 723,596 |  | 290,477 |  | (640,742 | ) | 611,979 |
Shareholders’ equity: |  |  |  |  |
Series A Preferred stock | — |  | — |  | 1 |  | — |  | 1 |
Common stock | 60 |  | 12 |  | 933 |  | (72 | ) | 933 |
Additional paid-in capital | 303,659 |  | 150,743 |  | 2,507,454 |  | (454,402 | ) | 2,507,454 |
Treasury stock, at cost | — |  | — |  | (49,924 | ) | — |  | (49,924 | )
Accumulated other comprehensive loss | (146,862 | ) | (1,525 | ) | (151,192 | ) | 148,387 |  | (151,192 | )
Retained earnings (accumulated deficit) | (1,451,995 | ) | 147,101 |  | (1,324,629 | ) | 1,304,894 |  | (1,324,629 | )
Total shareholders’ equity | (1,295,138 | ) | 296,331 |  | 982,643 |  | 998,807 |  | 982,643 |
Total | $ | 1,115,903 |  | $ | 1,194,831 |  | $ | 1,472,074 |  | $ | (2,006,482 | ) | $ | 1,776,326 |
Condensed Consolidating Statement of Comprehensive Income (Loss) |
CONDENSED CONSOLIDATING STATEMENT OF COMPREHENSIVE INCOME (LOSS)
For the three months ended September 30, 2013
| Combined Guarantor Subsidiaries | Combined Non-Guarantor Subsidiaries | The Company | Reclassifications and Eliminations | Consolidated
NET SALES: |  |  |  |  |
Third-party customers | $ | 224,571 |  | $ | 46,445 |  | $ | — |  | $ | — |  | $ | 271,016 |
Related parties | 71,399 |  | 57,513 |  | — |  | — |  | 128,912 |
| 295,970 |  | 103,958 |  | — |  | — |  | 399,928 |
Cost of goods sold | 303,521 |  | 84,053 |  | — |  | — |  | 387,574 |
Gross profit (loss) | (7,551 | ) | 19,905 |  | — |  | — |  | 12,354 |
Other operating expenses – net | 2,174 |  | — |  | — |  | — |  | 2,174 |
Selling, general and administrative expenses | 10,585 |  | 3,837 |  | — |  | — |  | 14,422 |
Operating income (loss) | (20,310 | ) | 16,068 |  | — |  | — |  | (4,242 | )
Interest expense – third party | (5,406 | ) | — |  | — |  | — |  | (5,406 | )
Interest expense – affiliates | 13,950 |  | (13,950 | ) | — |  | — |  | — |
Interest income – third party | 4 |  | 137 |  | — |  | — |  | 141 |
Net gain on forward and derivative contracts | 440 |  | — |  | — |  | — |  | 440 |
Other income (expense) - net | (25 | ) | 238 |  | — |  | — |  | 213 |
Income (loss) before income taxes and equity in earnings (loss) of subsidiaries and joint ventures | (11,347 | ) | 2,493 |  | — |  | — |  | (8,854 | )
Income tax benefit (expense) | 685 |  | (2,069 | ) | — |  | — |  | (1,384 | )
Income (loss) before equity in earnings (loss) of subsidiaries and joint ventures | (10,662 | ) | 424 |  | — |  | — |  | (10,238 | )
Equity in earnings (loss) of subsidiaries and joint ventures | (3,108 | ) | 731 |  | (9,507 | ) | 12,615 |  | 731 |
Net income (loss) | $ | (13,770 | ) | $ | 1,155 |  | $ | (9,507 | ) | $ | 12,615 |  | $ | (9,507 | )
Other comprehensive income (loss) before income tax effect | $ | 2,093 |  | $ | (46 | ) | $ | 866 |  | $ | (2,047 | ) | $ | 866 |
Income tax effect | (375 | ) | 8 |  | (383 | ) | 367 |  | (383 | )
Other comprehensive income (loss) | 1,718 |  | (38 | ) | 483 |  | (1,680 | ) | 483 |
Comprehensive income (loss) | $ | (12,052 | ) | $ | 1,117 |  | $ | (9,024 | ) | $ | 10,935 |  | $ | (9,024 | )
CONDENSED CONSOLIDATING STATEMENT OF COMPREHENSIVE INCOME (LOSS)
For the three months ended September 30, 2012
| Combined Guarantor Subsidiaries | Combined Non-Guarantor Subsidiaries | The Company | Reclassifications and Eliminations | Consolidated
NET SALES: |  |  |  |  |
Third-party customers | $ | 123,525 |  | $ | 46,498 |  | $ | — |  | $ | — |  | $ | 170,023 |
Related parties | 75,590 |  | 59,022 |  | — |  | — |  | 134,612 |
| 199,115 |  | 105,520 |  | — |  | — |  | 304,635 |
Cost of goods sold | 210,417 |  | 90,968 |  | — |  | — |  | 301,385 |
Gross profit (loss) | (11,302 | ) | 14,552 |  | — |  | — |  | 3,250 |
Other operating expenses – net | 7,388 |  | — |  | — |  | — |  | 7,388 |
Selling, general and administrative expenses | 7,530 |  | 1,652 |  | — |  | — |  | 9,182 |
Operating income (loss) | (26,220 | ) | 12,900 |  | — |  | — |  | (13,320 | )
Interest expense – third party | (6,041 | ) | — |  | — |  | — |  | (6,041 | )
Interest expense – affiliates | 15,860 |  | (15,860 | ) | — |  | — |  | — |
Interest income – third party | 4 |  | 68 |  | — |  | — |  | 72 |
Net gain on forward and derivative contracts | (340 | ) | — |  | — |  | — |  | (340 | )
Other (income) expense – net | (48 | ) | 7,696 |  | — |  | — |  | 7,648 |
Income (loss) before income taxes and equity in earnings (loss) of subsidiaries and joint ventures | (16,785 | ) | 4,804 |  | — |  | — |  | (11,981 | )
Income tax benefit (expense) | 964 |  | (2,132 | ) | — |  | — |  | (1,168 | )
Income (loss) before equity in earnings (loss) of subsidiaries and joint ventures | (15,821 | ) | 2,672 |  | — |  | — |  | (13,149 | )
Equity in earnings (loss) of subsidiaries and joint ventures | (638 | ) | 1,126 |  | (12,023 | ) | 12,661 |  | 1,126 |
Net income (loss) | $ | (16,459 | ) | $ | 3,798 |  | $ | (12,023 | ) | $ | 12,661 |  | $ | (12,023 | )
Other comprehensive income (loss) before income tax effect | $ | 1,339 |  | $ | (47 | ) | $ | 1,556 |  | $ | (1,292 | ) | $ | 1,556 |
Income tax effect | (4 | ) | 9 |  | (382 | ) | (5 | ) | (382 | )
Other comprehensive income (loss) | 1,335 |  | (38 | ) | 1,174 |  | (1,297 | ) | 1,174 |
Comprehensive income (loss) | $ | (15,124 | ) | $ | 3,760 |  | $ | (10,849 | ) | $ | 11,364 |  | $ | (10,849 | )
CONDENSED CONSOLIDATING STATEMENT OF COMPREHENSIVE INCOME (LOSS)
For the nine months ended September 30, 2013
| Combined Guarantor Subsidiaries | Combined Non-Guarantor Subsidiaries | The Company | Reclassifications and Eliminations | Consolidated
NET SALES: |  |  |  |  |
Third-party customers | $ | 535,655 |  | $ | 144,825 |  | $ | — |  | $ | — |  | $ | 680,480 |
Related parties | 189,679 |  | 182,980 |  | — |  | — |  | 372,659 |
| 725,334 |  | 327,805 |  | — |  | — |  | 1,053,139 |
Cost of goods sold | 765,101 |  | 263,800 |  | — |  | — |  | 1,028,901 |
Gross profit (loss) | (39,767 | ) | 64,005 |  | — |  | — |  | 24,238 |
Other operating expenses – net | 6,288 |  | — |  | — |  | — |  | 6,288 |
Selling, general and administrative expenses | 35,229 |  | 10,646 |  | — |  | — |  | 45,875 |
Operating income (loss) | (81,284 | ) | 53,359 |  | — |  | — |  | (27,925 | )
Interest expense – third party | (17,706 | ) | — |  | — |  | — |  | (17,706 | )
Interest expense – affiliates | 42,967 |  | (42,967 | ) | — |  | — |  | — |
Interest income – third party | 35 |  | 423 |  | — |  | — |  | 458 |
Net gain on forward and derivative contracts | 16,151 |  | — |  | — |  | — |  | 16,151 |
Gain on bargain purchase | 5,253 |  | — |  | — |  | — |  | 5,253 |
Loss on early extinguishment of debt | (3,272 | ) | — |  | — |  | — |  | (3,272 | )
Other expense – net | (34 | ) | (967 | ) | — |  | — |  | (1,001 | )
Income (loss) before income taxes and equity in earnings (loss) of subsidiaries and joint ventures | (37,890 | ) | 9,848 |  | — |  | — |  | (28,042 | )
Income tax benefit (expense) | (5,099 | ) | 385 |  | — |  | — |  | (4,714 | )
Income (loss) before equity in earnings (loss) of subsidiaries and joint ventures | (42,989 | ) | 10,233 |  | — |  | — |  | (32,756 | )
Equity in earnings (loss) of subsidiaries and joint ventures | (8,374 | ) | 2,118 |  | (30,638 | ) | 39,012 |  | 2,118 |
Net income (loss) | $ | (51,363 | ) | $ | 12,351 |  | $ | (30,638 | ) | $ | 39,012 |  | $ | (30,638 | )
Other comprehensive income (loss) before income tax effect | $ | 13,183 |  | $ | (139 | ) | $ | 13,660 |  | $ | (13,044 | ) | $ | 13,660 |
Income tax effect | (1,123 | ) | 25 |  | (1,148 | ) | 1,098 |  | (1,148 | )
Other comprehensive income (loss) | 12,060 |  | (114 | ) | 12,512 |  | (11,946 | ) | 12,512 |
Comprehensive income (loss) | $ | (39,303 | ) | $ | 12,237 |  | $ | (18,126 | ) | $ | 27,066 |  | $ | (18,126 | )
CONDENSED CONSOLIDATING STATEMENT OF COMPREHENSIVE INCOME (LOSS)
For the nine months ended September 30, 2013
| Combined Guarantor Subsidiaries | Combined Non-Guarantor Subsidiaries | The Company | Reclassifications and Eliminations | Consolidated
NET SALES: |  |  |  |  |
Third-party customers | $ | 535,655 |  | $ | 144,825 |  | $ | — |  | $ | — |  | $ | 680,480 |
Related parties | 189,679 |  | 182,980 |  | — |  | — |  | 372,659 |
| 725,334 |  | 327,805 |  | — |  | — |  | 1,053,139 |
Cost of goods sold | 765,101 |  | 263,800 |  | — |  | — |  | 1,028,901 |
Gross profit (loss) | (39,767 | ) | 64,005 |  | — |  | — |  | 24,238 |
Other operating expenses – net | 6,288 |  | — |  | — |  | — |  | 6,288 |
Selling, general and administrative expenses | 35,229 |  | 10,646 |  | — |  | — |  | 45,875 |
Operating income (loss) | (81,284 | ) | 53,359 |  | — |  | — |  | (27,925 | )
Interest expense – third party | (17,706 | ) | — |  | — |  | — |  | (17,706 | )
Interest expense – affiliates | 42,967 |  | (42,967 | ) | — |  | — |  | — |
Interest income – third party | 35 |  | 423 |  | — |  | — |  | 458 |
Net gain on forward and derivative contracts | 16,151 |  | — |  | — |  | — |  | 16,151 |
Gain on bargain purchase | 5,253 |  | — |  | — |  | — |  | 5,253 |
Loss on early extinguishment of debt | (3,272 | ) | — |  | — |  | — |  | (3,272 | )
Other expense – net | (34 | ) | (967 | ) | — |  | — |  | (1,001 | )
Income (loss) before income taxes and equity in earnings (loss) of subsidiaries and joint ventures | (37,890 | ) | 9,848 |  | — |  | — |  | (28,042 | )
Income tax benefit (expense) | (5,099 | ) | 385 |  | — |  | — |  | (4,714 | )
Income (loss) before equity in earnings (loss) of subsidiaries and joint ventures | (42,989 | ) | 10,233 |  | — |  | — |  | (32,756 | )
Equity in earnings (loss) of subsidiaries and joint ventures | (8,374 | ) | 2,118 |  | (30,638 | ) | 39,012 |  | 2,118 |
Net income (loss) | $ | (51,363 | ) | $ | 12,351 |  | $ | (30,638 | ) | $ | 39,012 |  | $ | (30,638 | )
Other comprehensive income (loss) before income tax effect | $ | 13,183 |  | $ | (139 | ) | $ | 13,660 |  | $ | (13,044 | ) | $ | 13,660 |
Income tax effect | (1,123 | ) | 25 |  | (1,148 | ) | 1,098 |  | (1,148 | )
Other comprehensive income (loss) | 12,060 |  | (114 | ) | 12,512 |  | (11,946 | ) | 12,512 |
Comprehensive income (loss) | $ | (39,303 | ) | $ | 12,237 |  | $ | (18,126 | ) | $ | 27,066 |  | $ | (18,126 | )
CONDENSED CONSOLIDATING STATEMENT OF COMPREHENSIVE INCOME (LOSS)
For the nine months ended September 30, 2012
| Combined Guarantor Subsidiaries | Combined Non-Guarantor Subsidiaries | The Company | Reclassifications and Eliminations | Consolidated
NET SALES: |  |  |  |  |
Third-party customers | $ | 391,100 |  | $ | 151,784 |  | $ | — |  | $ | — |  | $ | 542,884 |
Related parties | 226,589 |  | 184,971 |  | — |  | — |  | 411,560 |
| 617,689 |  | 336,755 |  | — |  | — |  | 954,444 |
Cost of goods sold | 640,650 |  | 283,995 |  | — |  | — |  | 924,645 |
Gross profit (loss) | (22,961 | ) | 52,760 |  | — |  | — |  | 29,799 |
Other operating expense – net | 14,926 |  | — |  | — |  | — |  | 14,926 |
Selling, general and administrative expenses | 23,747 |  | 1,045 |  | — |  | — |  | 24,792 |
Operating income (loss) | (61,634 | ) | 51,715 |  | — |  | — |  | (9,919 | )
Interest expense – third party | (17,966 | ) | — |  | — |  | — |  | (17,966 | )
Interest expense – affiliates | 48,108 |  | (48,108 | ) | — |  | — |  | — |
Interest income – third party | 19 |  | 305 |  | — |  | — |  | 324 |
Interest income – related parties | — |  | 62 |  | — |  | — |  | 62 |
Net gain on forward and derivative contracts | (4,049 | ) | — |  | — |  | — |  | (4,049 | )
Other income – net | 750 |  | 7,365 |  | — |  | — |  | 8,115 |
Income (loss) before income taxes and equity in earnings (loss) of subsidiaries and joint ventures | (34,772 | ) | 11,339 |  | — |  | — |  | (23,433 | )
Income tax benefit (expense) | 279 |  | (7,663 | ) | — |  | — |  | (7,384 | )
Income (loss) before equity in earnings (loss) of subsidiaries and joint ventures | (34,493 | ) | 3,676 |  | — |  | — |  | (30,817 | )
Equity in earnings (loss) of subsidiaries and joint ventures | (482 | ) | 2,116 |  | (28,701 | ) | 29,183 |  | 2,116 |
Net income (loss) | $ | (34,975 | ) | $ | 5,792 |  | $ | (28,701 | ) | $ | 29,183 |  | $ | (28,701 | )
Other comprehensive income (loss) before income tax effect | $ | 4,141 |  | $ | (140 | ) | $ | 4,842 |  | $ | (4,001 | ) | $ | 4,842 |
Income tax effect | (605 | ) | 26 |  | (1,147 | ) | 579 |  | (1,147 | )
Other comprehensive income (loss) | 3,536 |  | (114 | ) | 3,695 |  | (3,422 | ) | 3,695 |
Comprehensive income (loss) | $ | (31,439 | ) | $ | 5,678 |  | $ | (25,006 | ) | $ | 25,761 |  | $ | (25,006 | )
Condensed Consolidating Statement of Cash Flows |  |  |
CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS
For the nine months ended September 30, 2013
| Combined Guarantor Subsidiaries | Combined Non-Guarantor Subsidiaries | The Company | Consolidated
Net cash provided by (used in) operating activities | $ | 54,782 |  | $ | (12,324 | ) | $ | — |  | $ | 42,458 |
Investing activities: |  |  |  |
Purchase of property, plant and equipment | (10,400 | ) | (20,408 | ) | (1,186 | ) | (31,994 | )
Nordural expansion — Helguvik | — |  | (2,855 | ) | — |  | (2,855 | )
Purchase of carbon anode assets and improvements | — |  | (8,519 | ) | — |  | (8,519 | )
Purchase of Sebree smelter | — |  | — |  | (48,058 | ) | (48,058 | )
Proceeds from sale of property, plant and equipment | 10 |  | 505 |  | — |  | 515 |
Restricted and other cash deposits | (532 | ) | (2,483 | ) | — |  | (3,015 | )
Net cash used in investing activities | (10,922 | ) | (33,760 | ) | (49,244 | ) | (93,926 | )
Financing activities: |  |  |  |
Repayment of debt | — |  | — |  | (249,604 | ) | (249,604 | )
Proceeds from issuance of debt | — |  | — |  | 246,330 |  | 246,330 |
Borrowings under revolving credit facility | — |  | — |  | 16,725 |  | 16,725 |
Debt issuance costs | — |  | — |  | (3,994 | ) | (3,994 | )
Debt retirement costs | — |  | — |  | (1,208 | ) | (1,208 | )
Intercompany transactions | (43,860 | ) | 434 |  | 43,426 |  | — |
Issuance of common stock — net | — |  | — |  | 44 |  | 44 |
Net cash provided by (used in) financing activities | (43,860 | ) | 434 |  | 51,719 |  | 8,293 |
Change in cash and cash equivalents | — |  | (45,650 | ) | 2,475 |  | (43,175 | )
Cash and cash equivalents, beginning of the period | — |  | 110,016 |  | 73,960 |  | 183,976 |
Cash and cash equivalents, end of the period | $ | — |  | $ | 64,366 |  | $ | 76,435 |  | $ | 140,801 |
CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS
For the nine months ended September 30, 2012
| Combined Guarantor Subsidiaries | Combined Non-Guarantor Subsidiaries | The Company | Consolidated
Net cash provided by operating activities | $ | 11,824 |  | $ | 9,261 |  | $ | — |  | $ | 21,085 |
Investing activities: |  |  |  |  |
Purchase of property, plant and equipment | (4,102 | ) | (6,219 | ) | (78 | ) | (10,399 | )
Nordural expansion — Helguvik | — |  | (5,474 | ) | — |  | (5,474 | )
Purchase of carbon anode assets and improvements | (14,185 | ) | — |  | — |  | (14,185 | )
Investments in and advances to joint ventures | — |  | — |  | (275 | ) | (275 | )
Dividends and payments received on advances to joint ventures | — |  | — |  | 3,166 |  | 3,166 |
Proceeds from sale of property, plant and equipment | — |  | 89 |  | — |  | 89 |
Net cash provided by (used in) investing activities | (18,287 | ) | (11,604 | ) | 2,813 |  | (27,078 | )
Financing activities: |  |  |  |  |
Borrowings under revolving credit facility | — |  | — |  | 18,076 |  | 18,076 |
Repayments under revolving credit facility | — |  | — |  | (18,076 | ) | (18,076 | )
Intercompany transactions | 6,463 |  | (18,822 | ) | 12,359 |  | — |
Repurchase of common stock | — |  | — |  | (4,033 | ) | (4,033 | )
Net cash provided by (used in) financing activities | 6,463 |  | (18,822 | ) | 8,326 |  | (4,033 | )
Change in cash and cash equivalents | — |  | (21,165 | ) | 11,139 |  | (10,026 | )
Cash and cash equivalents, beginning of the period | — |  | 159,157 |  | 24,244 |  | 183,401 |
Cash and cash equivalents, end of the period | $ | — |  | $ | 137,992 |  | $ | 35,383 |  | $ | 173,375 |

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