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Note 13 - Guarantor Subsidiaries - Unaudited Interim Condensed Consolidating Statements of Operations (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2017 | Mar. 31, 2016
Revenues | $ 142,544 | $ 131,017
Cost of sales | (78,676) | (74,320)
Depreciation, depletion, amortization | (28,952) | (25,875)
General and administrative | (9,206) | (10,214)
Exploration and pre-development | (5,766) | (3,354)
Loss on derivative contracts | (7,809) |
Other (expense) income | (14,372) | (16,218)
Income (loss) before income taxes | (2,237) | 1,036
Income tax benefit (provision) | 29,071 | (1,654)
Net income (loss) | 26,834 | (618)
Preferred stock dividends | (138) | (138)
Income (loss) applicable to common stockholders | 26,696 | (756)
Changes in comprehensive income (loss) | 3,204 | 1,065
Comprehensive income (loss) | 30,038 | 447
Consolidation, Eliminations [Member] |  |
Revenues |  |
Cost of sales |  |
Depreciation, depletion, amortization |  |
General and administrative |  |
Exploration and pre-development |  |
Loss on derivative contracts |  |
Equity in earnings of subsidiaries | (2,701) | 20,991
Other (expense) income | (44,820) | (16,829)
Income (loss) before income taxes | (47,521) | 4,162
Income tax benefit (provision) | 44,820 | 16,829
Net income (loss) | (2,701) | 20,991
Preferred stock dividends |  |
Income (loss) applicable to common stockholders | (2,701) | 20,991
Changes in comprehensive income (loss) | 89 | (1,068)
Comprehensive income (loss) | (2,612) | 19,923
Parent Company [Member] | Reportable Legal Entities [Member] |  |
Revenues | (4,093) | (6,135)
Cost of sales | (148) |
Depreciation, depletion, amortization |  |
General and administrative | (6,469) | (5,240)
Exploration and pre-development | (244) | (45)
Loss on derivative contracts | (7,809) |
Equity in earnings of subsidiaries | 2,701 | (20,991)
Other (expense) income | 42,896 | 31,793
Income (loss) before income taxes | 26,834 | (618)
Income tax benefit (provision) |  |
Net income (loss) | 26,834 | (618)
Preferred stock dividends | (138) | (138)
Income (loss) applicable to common stockholders | 26,696 | (756)
Changes in comprehensive income (loss) | 3,204 | 1,065
Comprehensive income (loss) | 30,038 | 447
Guarantor Subsidiaries [Member] | Reportable Legal Entities [Member] |  |
Revenues | 82,953 | 81,269
Cost of sales | (42,772) | (46,753)
Depreciation, depletion, amortization | (15,766) | (16,606)
General and administrative | (2,319) | (4,523)
Exploration and pre-development | (1,901) | (1,287)
Loss on derivative contracts |  |
Equity in earnings of subsidiaries |  |
Other (expense) income | (3,116) | 4,336
Income (loss) before income taxes | 17,079 | 16,436
Income tax benefit (provision) | (8,969) | (4,833)
Net income (loss) | 8,110 | 11,603
Preferred stock dividends |  |
Income (loss) applicable to common stockholders | 8,110 | 11,603
Changes in comprehensive income (loss) |  | 8
Comprehensive income (loss) | 8,110 | 11,611
Non-Guarantor Subsidiaries [Member] | Reportable Legal Entities [Member] |  |
Revenues | 63,684 | 55,883
Cost of sales | (35,756) | (27,567)
Depreciation, depletion, amortization | (13,186) | (9,269)
General and administrative | (418) | (451)
Exploration and pre-development | (3,621) | (2,022)
Loss on derivative contracts |  |
Equity in earnings of subsidiaries |  |
Other (expense) income | (9,332) | (35,518)
Income (loss) before income taxes | 1,371 | (18,944)
Income tax benefit (provision) | (6,780) | (13,650)
Net income (loss) | (5,409) | (32,594)
Preferred stock dividends |  |
Income (loss) applicable to common stockholders | (5,409) | (32,594)
Changes in comprehensive income (loss) | (89) | 1,060
Comprehensive income (loss) | $ (5,498) | $ (31,534)

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- Definition Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=84228862&loc=d3e557-108580 + Details
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- Definition Amount of paid and unpaid preferred stock dividends declared with the form of settlement in cash, stock and payment-in-kind (PIK). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 405 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6957935&loc=d3e64057-112817 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + Details
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- Definition This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(12)) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(10)) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=66022249&loc=d3e33749-111570 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(13)(f)) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 + Details
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