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Note 13 - Guarantor Subsidiaries - Unaudited Interim Condensed Consolidating Statements of Operations (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2017 | Sep. 30, 2016
Revenues | $ (140,839) | $ (179,393) | $ (417,662) | $ (481,712)
Revenues | 140,839 | 179,393 | 417,662 | 481,712
Cost of sales | (68,358) | (90,529) | (224,537) | (249,162)
Depreciation, depletion, amortization | (28,844) | (30,179) | (83,365) | (84,592)
General and administrative | (9,529) | (11,155) | (29,044) | (31,728)
Exploration and pre-development | (9,012) | (4,409) | (21,683) | (11,646)
Research and development | (1,130) |  | (2,125) |
Loss on derivative contracts | (11,226) | 7 | (16,548) |
Foreign exchange gain (loss) | (4,764) | 2,375 | (10,909) | (7,713)
Lucky Friday suspension-related costs | (4,780) |  | (14,385) |
Equity in earnings of subsidiaries |  |  |  |
Other (expense) income | (7,185) | (6,121) | (29,213) | (30,529)
Income (loss) before income taxes | (3,989) | 35,242 | (14,147) | 71,888
(Provision) benefit from income taxes | 5,401 | (9,453) | 18,377 | (22,603)
Net income (loss) | 1,412 | 25,789 | 4,230 | 49,285
Preferred stock dividends | (138) | (138) | (414) | (414)
Income (loss) applicable to common shareholders | 1,274 | 25,651 | 3,816 | 48,871
Changes in comprehensive income (loss) | 7,636 | (615) | 13,718 | 1,689
Comprehensive income (loss) | 9,048 | 25,174 | 17,948 | 50,974
Acquisition costs |  | (1,765) |  | (2,167)
Income (loss) applicable to common shareholders | 1,274 | 25,651 | 3,816 | 48,871
Reportable Legal Entities [Member] | Parent Company [Member] |  |  |  |
Revenues | (626) | (4,072) | (3,912) | (15,866)
Revenues | 626 | 4,072 | 3,912 | 15,866
Cost of sales | 687 |  | 353 |
Depreciation, depletion, amortization |  |  |  |
General and administrative | (4,217) | (5,355) | (16,407) | (17,069)
Exploration and pre-development | (129) | (33) | (439) | (191)
Research and development |  |  |  |
Loss on derivative contracts | (11,226) | 7 | (16,548) |
Foreign exchange gain (loss) | 12,153 |  | 22,286 |
Lucky Friday suspension-related costs |  |  |  |
Equity in earnings of subsidiaries | (6,271) | 52,606 | (5,925) | 68,727
Other (expense) income | 11,041 | (15,597) | 24,822 | 15,844
Income (loss) before income taxes | 1,412 | 25,790 | 4,230 | 49,285
(Provision) benefit from income taxes |  |  |  |
Net income (loss) | 1,412 | 25,790 | 4,230 | 49,285
Preferred stock dividends | (138) | (138) | (414) | (414)
Income (loss) applicable to common shareholders | 1,274 | 25,652 | 3,816 | 48,871
Changes in comprehensive income (loss) | 7,636 | (615) | 13,718 | 1,689
Comprehensive income (loss) | 9,048 | 25,175 | 17,948 | 50,974
Acquisition costs |  | (1,766) |  | (2,160)
Income (loss) applicable to common shareholders | 1,274 | 25,652 | 3,816 | 48,871
Reportable Legal Entities [Member] | Guarantor Subsidiaries [Member] |  |  |  |
Revenues | (61,887) | (116,016) | (215,184) | (285,277)
Revenues | 61,887 | 116,016 | 215,184 | 285,277
Cost of sales | (29,320) | (58,844) | (112,908) | (154,160)
Depreciation, depletion, amortization | (12,607) | (19,036) | (41,875) | (49,521)
General and administrative | (4,464) | (5,469) | (10,877) | (13,671)
Exploration and pre-development | (4,339) | (1,343) | (8,736) | (3,990)
Research and development | (1,130) |  | (2,125) |
Loss on derivative contracts |  |  |  |
Foreign exchange gain (loss) |  |  | (43) |
Lucky Friday suspension-related costs | (4,780) |  | (14,385) |
Equity in earnings of subsidiaries |  |  |  |
Other (expense) income | 1,202 | 1,187 | (1,207) | 8,147
Income (loss) before income taxes | 6,449 | 32,512 | 23,028 | 72,075
(Provision) benefit from income taxes | (1,338) | (8,994) | (9,239) | (22,213)
Net income (loss) | 5,111 | 23,518 | 13,789 | 49,862
Preferred stock dividends |  |  |  |
Income (loss) applicable to common shareholders | 5,111 | 23,518 | 13,789 | 49,862
Changes in comprehensive income (loss) |  |  |  | 8
Comprehensive income (loss) | 5,111 | 23,518 | 13,789 | 49,870
Acquisition costs |  | 1 |  | (7)
Income (loss) applicable to common shareholders | 5,111 | 23,518 | 13,789 | 49,862
Reportable Legal Entities [Member] | Non-Guarantor Subsidiaries [Member] |  |  |  |
Revenues | (79,578) | (67,449) | (206,390) | (212,301)
Revenues | 79,578 | 67,449 | 206,390 | 212,301
Cost of sales | (39,725) | (31,685) | (111,982) | (95,002)
Depreciation, depletion, amortization | (16,237) | (11,143) | (41,490) | (35,071)
General and administrative | (848) | (331) | (1,760) | (988)
Exploration and pre-development | (4,544) | (3,033) | (12,508) | (7,465)
Research and development |  |  |  |
Loss on derivative contracts |  |  |  |
Foreign exchange gain (loss) | (16,917) |  | (33,152) |
Lucky Friday suspension-related costs |  |  |  |
Equity in earnings of subsidiaries |  |  |  |
Other (expense) income | (4,676) | 1,211 | (14,146) | (43,039)
Income (loss) before income taxes | (3,369) | 22,468 | (8,648) | 30,736
(Provision) benefit from income taxes | (8,013) | 6,621 | (11,066) | (11,871)
Net income (loss) | (11,382) | 29,089 | (19,714) | 18,865
Preferred stock dividends |  |  |  |
Income (loss) applicable to common shareholders | (11,382) | 29,089 | (19,714) | 18,865
Changes in comprehensive income (loss) | 1,022 | 985 | 1,780 | 3,238
Comprehensive income (loss) | (10,360) | 30,074 | (17,934) | 22,103
Acquisition costs |  |  |  |
Income (loss) applicable to common shareholders | (11,382) | 29,089 | (19,714) | 18,865
Consolidation, Eliminations [Member] |  |  |  |
Revenues |  |  |  |
Revenues |  |  |  |
Cost of sales |  |  |  |
Depreciation, depletion, amortization |  |  |  |
General and administrative |  |  |  |
Exploration and pre-development |  |  |  |
Research and development |  |  |  |
Loss on derivative contracts |  |  |  |
Foreign exchange gain (loss) |  |  |  |
Lucky Friday suspension-related costs |  |  |  |
Equity in earnings of subsidiaries | 6,271 | (52,606) | 5,925 | (68,727)
Other (expense) income | (14,752) | 7,078 | (38,682) | (11,481)
Income (loss) before income taxes | (8,481) | (45,528) | (32,757) | (80,208)
(Provision) benefit from income taxes | 14,752 | (7,080) | 38,682 | 11,481
Net income (loss) | 6,271 | (52,608) | 5,925 | (68,727)
Preferred stock dividends |  |  |  |
Income (loss) applicable to common shareholders | 6,271 | (52,608) | 5,925 | (68,727)
Changes in comprehensive income (loss) | (1,022) | (985) | (1,780) | (3,246)
Comprehensive income (loss) | 5,249 | (53,593) | 4,145 | (71,973)
Acquisition costs |  |  |  |
Income (loss) applicable to common shareholders | $ 6,271 | $ (52,608) | $ 5,925 | $ (68,727)

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