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Note 16 - Guarantor Subsidiaries - Condensed Consolidating Statements of Operations (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Revenues | $ 645,957 | $ 443,567 | $ 500,781
Cost of sales | (338,983) | (293,567) | (304,446)
Depreciation, depletion, and amortization | (115,468) | (111,489) | (111,134)
General and administrative | (45,040) | (34,201) | (31,538)
Exploration and pre-development | (17,857) | (21,958) | (19,667)
Gain on derivative contracts | 4,423 | 8,252 | 9,134
Acquisition costs | (2,695) | (2,162) |
Equity in earnings of subsidiaries |  |  |
Other (expense) income | (33,362) | (19,100) | (30,546)
Income (loss) before income taxes | 96,975 | (30,658) | 12,584
Income tax (provision) benefit | (27,428) | (56,310) | 5,240
Net income | 69,547 | (86,968) | 17,824
Series B Preferred Stock dividends declared | (552) | (552) | (552)
Net income (loss) applicable to common shares | 68,995 | (87,520) | 17,272
Change, net of tax | (1,971) | (600) | (5,732)
Comprehensive (loss) income | 67,576 | (87,568) | 12,092
Cost of sales | (454,451) | (405,056) | (304,446)
Closed operations |  | (2,162) |
Consolidation, Eliminations [Member] |  |  |
Revenues |  |  |
Cost of sales |  |  |
Depreciation, depletion, and amortization |  |  |
General and administrative |  |  |
Exploration and pre-development |  |  |
Gain on derivative contracts |  |  |
Acquisition costs |  |  |
Equity in earnings of subsidiaries | (94,878) | (49,565) | (72,407)
Other (expense) income | (19,344) | 54,188 | (16,295)
Income (loss) before income taxes | (114,222) | 4,623 | (88,702)
Income tax (provision) benefit | 19,344 | (54,188) | 16,295
Net income | (94,878) | (49,565) | (72,407)
Series B Preferred Stock dividends declared |  |  |
Net income (loss) applicable to common shares | (94,878) | (49,565) | (72,407)
Change, net of tax | (2,665) | 208 | 177
Comprehensive (loss) income | (97,543) | (49,357) | (72,230)
Cost of sales |  |  |
Closed operations |  |  |
Parent Company [Member] | Reportable Legal Entities [Member] |  |  |
Revenues | (14,237) | 6,194 | 1,473
Cost of sales |  |  |
Depreciation, depletion, and amortization |  |  |
General and administrative | (23,262) | (17,920) | (17,667)
Exploration and pre-development | (304) | (627) | (252)
Gain on derivative contracts | 4,423 | 8,252 | 9,134
Acquisition costs | (2,607) |  |
Equity in earnings of subsidiaries | 94,878 | 49,565 | 72,407
Other (expense) income | 10,656 | (131,915) | (47,271)
Income (loss) before income taxes | 69,547 | (86,968) | 17,824
Income tax (provision) benefit |  |  |
Net income | 69,547 | (86,968) | 17,824
Series B Preferred Stock dividends declared | (552) | (552) | (552)
Net income (loss) applicable to common shares | 68,995 | (87,520) | 17,272
Change, net of tax | (1,971) | (600) | (5,732)
Comprehensive (loss) income | 67,576 | (87,568) | 12,092
Cost of sales |  |  |
Closed operations |  | (517) |
Guarantor Subsidiaries [Member] | Reportable Legal Entities [Member] |  |  |
Revenues | 369,162 | 287,941 | 333,460
Cost of sales | (203,133) |  |
Depreciation, depletion, and amortization | (64,374) | (67,815) | (72,937)
General and administrative | (20,425) | (14,508) | (12,694)
Exploration and pre-development | (6,640) | (7,177) | (7,088)
Gain on derivative contracts |  |  |
Acquisition costs | (34) |  |
Equity in earnings of subsidiaries |  |  |
Other (expense) income | 11,400 | 22,537 | 29,753
Income (loss) before income taxes | 85,956 | 26,650 | 75,894
Income tax (provision) benefit | (25,334) | (7,251) | (10,565)
Net income | 60,622 | 19,399 | 65,329
Series B Preferred Stock dividends declared |  |  |
Net income (loss) applicable to common shares | 60,622 | 19,399 | 65,329
Change, net of tax | 8 | (467) | (1,329)
Comprehensive (loss) income | 60,630 | 18,932 | 64,000
Cost of sales |  | (192,683) | (194,600)
Closed operations |  | (1,645) |
Non-Guarantor Subsidiaries [Member] | Reportable Legal Entities [Member] |  |  |
Revenues | 291,032 | 149,432 | 165,848
Cost of sales | (135,850) |  |
Depreciation, depletion, and amortization | (51,094) | (43,674) | (38,197)
General and administrative | (1,353) | (1,773) | (1,177)
Exploration and pre-development | (10,913) | (14,154) | (12,327)
Gain on derivative contracts |  |  |
Acquisition costs | (54) |  |
Equity in earnings of subsidiaries |  |  |
Other (expense) income | (36,074) | 36,090 | 3,267
Income (loss) before income taxes | 55,694 | 25,037 | 7,568
Income tax (provision) benefit | (21,438) | 5,129 | (490)
Net income | 34,256 | 30,166 | 7,078
Series B Preferred Stock dividends declared |  |  |
Net income (loss) applicable to common shares | 34,256 | 30,166 | 7,078
Change, net of tax | 2,657 | 259 | 1,152
Comprehensive (loss) income | $ 36,913 | 30,425 | 8,230
Cost of sales |  | (100,884) | (109,846)
Closed operations |  |  |

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