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Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands | 9 Months Ended
--- | ---
Sep. 30, 2011 | Sep. 30, 2010
Operating activities: |  |
Net income | $ 132,595 | $ 58,719
Non-cash elements included in net income: |  |
Depreciation, depletion and amortization | 34,769 | 46,190
Gain on sale of investments | (611) | (588)
Loss on impairment of investments |  | 739
Provision for reclamation and closure costs | 832 | 2,784
Stock compensation | 1,497 | 3,336
Deferred income taxes | 60,790 | 2,070
Amortization of loan origination fees | 498 | 468
(Gain) loss on derivative contracts | (56,512) | 11,586
Other non-cash charges, net | 932 | 690
Change in assets and liabilities: |  |
Accounts receivable | 7,745 | (22,385)
Inventories | (6,608) | 512
Other current and non-current assets | 373 | 1,026
Accounts payable and accrued liabilities | 17,233 | 16,537
Accrued payroll and related benefits | 581 | (5,207)
Accrued taxes | (6,276) | 4,367
Accrued reclamation and closure costs and other non-current liabilities | 100 | (5,371)
Cash provided by operating activities | 187,938 | 115,473
Investing activities: |  |
Additions to properties, plants, equipment and mineral interests | (64,381) | (48,725)
Proceeds from sale of investments | 1,366 | 1,138
Proceeds from disposition of properties, plants and equipment | 113 |
Purchases of investments | (3,200) |
Changes in restricted cash and investment balances | 9,388 | 1,476
Net cash used in investing activities | (56,714) | (46,111)
Financing activities: |  |
Proceeds from exercise of stock options and warrants | 5,108 | 45,562
Acquisition of treasury shares | (469) | (693)
Dividends paid to preferred shareholders | (3,684) | (1,105)
Repayments of capital leases | (2,042) | (1,227)
Net cash (used) provided by financing activities | (1,087) | 42,537
Change in cash and cash equivalents: |  |
Net increase in cash and cash equivalents | 130,137 | 111,899
Cash and cash equivalents at beginning of period | 283,606 | 104,678
Cash and cash equivalents at end of period | 413,743 | 216,577
Significant non-cash investing and financing activities: |  |
Addition of capital lease obligations | 3,353 | 2,282
Accounts payable change relating to capital additions | 6,721 | (205)
Preferred stock dividends paid in common stock |  | $ 22,891

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- Definition The cash outflow associated with security instruments that either represent a creditor or an ownership relationship with the holder of the investment security with a maturity of beyond one year or normal operating cycle, if longer. Includes repayments of (a) debt, (b) capital lease obligations, (c) mandatory redeemable capital securities, and (d) any combination of (a), (b), or (c). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3291-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 20 -Subparagraph b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 + Details
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- Definition The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3602-108585 + Details
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