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Note 13 - Condensed Consolidating Statements of Operations (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2016 | Mar. 31, 2015
Parent Company [Member] |  |
Revenues | $ (6,135) | $ 312
Cost of sales |  |
Depreciation, depletion, amortization |  |
General and administrative | $ (5,240) | $ (4,442)
Exploration and pre-development | $ (45) | (217)
Gain on derivative contracts |  | 5,792
Equity in earnings of subsidiaries | $ (20,991) | 40,042
Other (expense) income | 31,793 | (28,935)
Income (loss) before income taxes | $ (618) | $ 12,552
(Provision) benefit from income taxes |  |
Net income (loss) | $ (618) | $ 12,552
Preferred stock dividends | (138) | (138)
Income (loss) applicable to common stockholders | (756) | 12,414
Changes in comprehensive income (loss) | 1,065 | 1,936
Comprehensive income (loss) | 447 | 14,488
Equity in earnings (loss) of subsidiaries | (20,991) | 40,042
Guarantor Subsidiaries [Member] |  |
Revenues | 81,269 | 86,934
Cost of sales | (46,753) | (51,437)
Depreciation, depletion, amortization | (16,606) | (16,611)
General and administrative | (4,523) | (3,893)
Exploration and pre-development | $ (1,287) | $ (1,134)
Gain on derivative contracts |  |
Equity in earnings of subsidiaries |  |
Other (expense) income | $ 4,336 | $ 3,567
Income (loss) before income taxes | 16,436 | 17,426
(Provision) benefit from income taxes | (4,833) | (4,946)
Net income (loss) | $ 11,603 | $ 12,480
Preferred stock dividends |  |
Income (loss) applicable to common stockholders | $ 11,603 | $ 12,480
Changes in comprehensive income (loss) | 8 | (194)
Comprehensive income (loss) | $ 11,611 | $ 12,286
Equity in earnings (loss) of subsidiaries |  |
Non-Guarantor Subsidiaries [Member] |  |
Revenues | $ 55,883 | $ 31,846
Cost of sales | (27,567) | (22,528)
Depreciation, depletion, amortization | (9,269) | (8,643)
General and administrative | (451) | (385)
Exploration and pre-development | $ (2,022) | $ (3,785)
Gain on derivative contracts |  |
Equity in earnings of subsidiaries |  |
Other (expense) income | $ (35,518) | $ 31,006
Income (loss) before income taxes | (18,944) | 27,511
(Provision) benefit from income taxes | (13,650) | 51
Net income (loss) | $ (32,594) | $ 27,562
Preferred stock dividends |  |
Income (loss) applicable to common stockholders | $ (32,594) | $ 27,562
Changes in comprehensive income (loss) | 1,060 | 2,051
Comprehensive income (loss) | $ (31,534) | $ 29,613
Equity in earnings (loss) of subsidiaries |  |
Consolidation, Eliminations [Member] |  |
Revenues |  |
Cost of sales |  |
Depreciation, depletion, amortization |  |
General and administrative |  |
Exploration and pre-development |  |
Gain on derivative contracts |  |
Equity in earnings of subsidiaries | $ 20,991 | $ (40,042)
Other (expense) income | (16,829) | (3,456)
Income (loss) before income taxes | 4,162 | (43,498)
(Provision) benefit from income taxes | 16,829 | 3,456
Net income (loss) | $ 20,991 | $ (40,042)
Preferred stock dividends |  |
Income (loss) applicable to common stockholders | $ 20,991 | $ (40,042)
Changes in comprehensive income (loss) | (1,068) | (1,857)
Comprehensive income (loss) | 19,923 | (41,899)
Equity in earnings (loss) of subsidiaries | 20,991 | (40,042)
Consolidated [Member] |  |
Revenues | 131,017 | 119,092
Cost of sales | (74,320) | (73,965)
Depreciation, depletion, amortization | (25,875) | (25,254)
General and administrative | (10,214) | (8,720)
Exploration and pre-development | $ (3,354) | (5,136)
Gain on derivative contracts |  | $ 5,792
Equity in earnings of subsidiaries |  |
Other (expense) income | $ (16,218) | $ 2,182
Income (loss) before income taxes | 1,036 | 13,991
(Provision) benefit from income taxes | (1,654) | (1,439)
Net income (loss) | (618) | 12,552
Preferred stock dividends | (138) | (138)
Income (loss) applicable to common stockholders | (756) | 12,414
Changes in comprehensive income (loss) | 1,065 | 1,936
Comprehensive income (loss) | $ 447 | $ 14,488
Equity in earnings (loss) of subsidiaries |  |
Revenues | $ 131,017 | $ 119,092
Cost of sales | 74,320 | 73,965
Depreciation, depletion, amortization | 25,875 | 25,254
General and administrative | $ 10,214 | 8,720
Gain on derivative contracts |  | 5,792
Income (loss) before income taxes | $ 1,036 | 13,991
(Provision) benefit from income taxes | 1,654 | 1,439
Net income (loss) | (618) | 12,552
Preferred stock dividends | 138 | 138
Income (loss) applicable to common stockholders | (756) | 12,414
Comprehensive income (loss) | $ 447 | $ 14,488

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