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Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified | 9 Months Ended
--- | ---
Sep. 30, 2013 | Sep. 30, 2012
Operating activities: |  |
Net income (loss) | $ (22,222) | $ 14,211
Non-cash elements included in net income (loss): |  |
Depreciation, depletion and amortization | 55,279 | 36,042
Gain on sale of investments | (197) |
Unrealized gain on investments | (327) |
(Gain) loss on disposition of properties, plants, equipment, and mineral interests | (125) | 359
Provision for reclamation and closure costs | 1,701 | 3,937
Stock compensation | 3,253 | 2,296
Deferred income taxes | (1,304) | (2,023)
Amortization of loan origination fees | 905 | 324
(Gain) loss on derivative contracts | (15,589) | 24,748
Reversal of purchase price allocation to product inventory | 550 |
Other non-cash items, net | (819) | 901
Change in assets and liabilities: |  |
Accounts receivable | (14,711) | (9,508)
Inventories | (1,923) | 1,025
Other current and non-current assets | (793) | (417)
Accounts payable and accrued liabilities | 8,574 | 4,561
Accrued payroll and related benefits | (281) | (2,754)
Accrued taxes | (10,458) | (611)
Accrued reclamation and closure costs and other non-current liabilities | 3,565 | (6,603)
Cash provided by operating activities | 5,080 | 66,488
Investing activities: |  |
Additions to properties, plants, equipment and mineral interests | (112,806) | (81,318)
Acquisition of Aurizon, net of cash acquired | (321,117) |
Proceeds from sale of investments | 1,772 |
Proceeds from disposition of properties, plants and equipment | 126 | 744
Purchases of investments | (5,738) | (3,261)
Changes in restricted cash and investment balances | (36) |
Net cash used in investing activities | (437,799) | (83,835)
Financing activities: |  |
Acquisition of treasury shares | (286) | (497)
Dividends paid to common shareholders | (5,134) | (10,700)
Dividends paid to preferred shareholders | (414) | (414)
Debt issuance and loan origination fees | (1,244) | (750)
Borrowings on debt | 490,000 |
Repayments of capital leases | (5,171) | (4,561)
Net cash provided by (used in) financing activities | 477,751 | (16,922)
Effect of exchange rates on cash | 1,820 |
Net increase (decrease) in cash and cash equivalents | 46,852 | (34,269)
Cash and cash equivalents at beginning of period | 190,984 | 266,463
Cash and cash equivalents at end of period | 237,836 | 232,194
Significant non-cash investing and financing activities: |  |
Addition of capital lease obligations | 7,674 | 9,108
Accounts payable change relating to capital additions | (8,101) | (2,905)
Stock issued for the acquisition of Aurizon | $ 218,302 |

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