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Consolidated Statements of Comprehensive Income (USD $) In Thousands, except Per Share data, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2013 | Sep. 30, 2013 | Jun. 30, 2013 | Mar. 31, 2013 | Dec. 31, 2012 | Sep. 30, 2012 | Jun. 30, 2012 | Mar. 31, 2012 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Statement of Other Comprehensive Income [Abstract] |  |  |  |  |  |  |  |  |  |  |
Sales of metal | $ 168,847 | $ 200,825 | $ 204,525 | $ 171,797 | $ 205,929 | $ 230,593 | $ 254,406 | $ 204,564 | $ 745,994 | $ 895,492 | $ 1,021,200
Production costs applicable to sales | (100,227) | (131,728) | (142,924) | (88,784) | (106,473) | (124,365) | (131,182) | (92,542) | (463,663) | (454,562) | (419,547)
Amortization | (63,916) | (60,874) | (57,653) | (50,436) | (52,397) | (52,844) | (61,024) | (52,592) | (232,879) | (218,857) | (224,500)
Gross profit |  |  |  |  |  |  |  |  | 49,452 | 222,073 | 377,153
COSTS AND EXPENSES |  |  |  |  |  |  |  |  |  |  |
Administrative and general |  |  |  |  |  |  |  |  | 55,343 | 32,977 | 31,379
Exploration | 5,440 | 3,305 | 6,774 | 6,841 | 6,441 | 6,957 | 6,305 | 6,567 | 22,360 | 26,270 | 19,128
Litigation settlement |  |  | (32,000) |  |  |  |  |  | 32,046 | 0 | 0
Write-downs |  |  |  |  |  |  |  |  | 772,993 | 5,825 | 0
Pre-development, care, maintenance and other |  |  |  |  |  |  |  |  | 11,869 | 1,261 | 19,441
Total cost and expenses |  |  |  |  |  |  |  |  | 894,611 | 66,333 | 69,948
OPERATING INCOME |  |  |  |  |  |  |  |  | (845,159) | 155,740 | 307,205
OTHER INCOME AND EXPENSE |  |  |  |  |  |  |  |  |  |  |
Loss on debt extinguishments |  |  |  |  |  |  |  |  | 0 | (1,036) | (5,526)
Fair value adjustments, net |  |  |  |  |  |  |  |  | 82,768 | (23,487) | (52,050)
Impairment of marketable securities |  |  |  |  |  |  |  |  | (18,308) | (605) | 0
Interest and other income |  |  |  |  |  |  |  |  | 13,323 | 15,041 | (6,610)
Interest expense, net of capitalized interest |  |  |  |  |  |  |  |  | (41,303) | (26,169) | (34,774)
Total other income and expense |  |  |  |  |  |  |  |  | 36,480 | (36,256) | (98,960)
Income before income taxes |  |  |  |  |  |  |  |  | (808,679) | 119,484 | 208,245
Income tax benefit (expense) |  |  |  |  |  |  |  |  | 158,116 | (70,807) | (114,746)
NET INCOME (LOSS) | (581,528) | (46,265) | (35,040) | 12,270 | 37,550 | (15,821) | 22,973 | 3,975 | (650,563) | 48,677 | 93,499
Other Comprehensive Income (Loss), Net of Tax: |  |  |  |  |  |  |  |  |  |  |
Unrealized gain (loss) on available for sale securities |  |  |  |  |  |  |  |  | (8,489) | (3,351) | (4,975)
Reclassification adjustments for other than temporary impairment of marketable securities |  |  |  |  |  |  |  |  | 11,221 | 605 | 0
Reclassification adjustments for realized loss on sale of marketable securities |  |  |  |  |  |  |  |  | 83 | 0 | 0
Other comprehensive income (loss) |  |  |  |  |  |  |  |  | 2,815 | (2,746) | (4,975)
COMPREHENSIVE INCOME |  |  |  |  |  |  |  |  | $ (647,748) | $ 45,931 | $ 88,524
BASIC AND DILUTED INCOME PER SHARE |  |  |  |  |  |  |  |  |  |  |
Basic (in dollars per share) | $ (5.77) | $ (0.46) | $ (0.35) | $ 0.14 | $ 0.42 | $ (0.18) | $ 0.26 | $ 0.04 | $ (6.65) | $ 0.54 | $ 1.05
Diluted (in dollars per share) | $ (5.77) | $ (0.46) | $ (0.35) | $ 0.14 | $ 0.42 | $ (0.18) | $ 0.26 | $ 0.04 | $ (6.65) | $ 0.54 | $ 1.04

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