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Note 14 - Condensed Consolidating Statements of Operations (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2016 | Jun. 30, 2015 | Jun. 30, 2016 | Jun. 30, 2015
Parent Company [Member] |  |  |  |
Revenues | $ (5,659) | $ 1,081 | $ (11,794) | $ 1,393
Cost of sales |  |  |  |
Depreciation, depletion, amortization |  |  |  |
General and administrative | (6,474) | (4,373) | (11,714) | (8,815)
Exploration and pre-development | (113) | (122) | (158) | (339)
Loss on derivative contracts | (6) | (2,055) | (6) | 4,905
Acquisition costs | (394) | (887) | (394) | (2,055)
Equity in earnings of subsidiaries | 37,111 | (738) | 16,120 | 39,304
Other (expense) income | (349) | (19,573) | 31,444 | (48,508)
Income (loss) before income taxes | 24,116 | (26,667) | 23,498 | (14,115)
(Provision) benefit from income taxes |  |  |  |
Net income (loss) | 24,116 | (26,667) | 23,498 | (14,115)
Preferred stock dividends | (138) | (138) | (276) | (276)
Income (loss) applicable to common stockholders | 23,978 | (26,805) | 23,222 | (14,391)
Changes in comprehensive income (loss) | 1,239 | (1,156) | 2,304 | 780
Comprehensive income (loss) | 25,355 | (27,823) | 25,802 | (13,335)
Guarantor Subsidiaries [Member] |  |  |  |
Revenues | 87,992 | 67,531 | 169,261 | 154,465
Cost of sales | (47,203) | (41,512) | (93,956) | (92,949)
Depreciation, depletion, amortization | (15,238) | (16,452) | (31,844) | (33,063)
General and administrative | (3,679) | (3,392) | (8,202) | (7,285)
Exploration and pre-development | (1,360) | (1,445) | (2,647) | (2,579)
Loss on derivative contracts |  | (92) |  |
Acquisition costs | (8) |  | (8) | (92)
Equity in earnings of subsidiaries |  |  |  |
Other (expense) income | 2,623 | 3,499 | 6,959 | 7,066
Income (loss) before income taxes | 23,127 | 8,137 | 39,563 | 25,563
(Provision) benefit from income taxes | (8,386) | (1,956) | (13,219) | (6,902)
Net income (loss) | 14,741 | 6,181 | 26,344 | 18,661
Preferred stock dividends |  |  |  |
Income (loss) applicable to common stockholders | 14,741 | 6,181 | 26,344 | 18,661
Changes in comprehensive income (loss) |  | 183 | 8 | (11)
Comprehensive income (loss) | 14,741 | 6,364 | 26,352 | 18,650
Non-Guarantor Subsidiaries [Member] |  |  |  |
Revenues | 88,969 | 35,585 | 144,852 | 67,431
Cost of sales | (35,750) | (26,055) | (63,317) | (48,583)
Depreciation, depletion, amortization | (14,659) | (10,714) | (23,928) | (19,357)
General and administrative | (206) | (531) | (657) | (916)
Exploration and pre-development | (2,410) | (4,643) | (4,432) | (8,428)
Loss on derivative contracts |  |  |  |
Acquisition costs |  |  |  |
Equity in earnings of subsidiaries |  |  |  |
Other (expense) income | (8,732) | (22,544) | (44,250) | 8,462
Income (loss) before income taxes | 27,212 | (28,902) | 8,268 | (1,391)
(Provision) benefit from income taxes | (4,842) | 21,983 | (18,492) | 22,034
Net income (loss) | 22,370 | (6,919) | (10,224) | 20,643
Preferred stock dividends |  |  |  |
Income (loss) applicable to common stockholders | 22,370 | (6,919) | (10,224) | 20,643
Changes in comprehensive income (loss) | 1,193 | (1,264) | 2,253 | 787
Comprehensive income (loss) | 23,563 | (8,183) | (7,971) | 21,430
Consolidation, Eliminations [Member] |  |  |  |
Revenues |  |  |  |
Cost of sales |  |  |  |
Depreciation, depletion, amortization |  |  |  |
General and administrative |  |  |  |
Exploration and pre-development |  |  |  |
Loss on derivative contracts |  |  |  |
Acquisition costs |  |  |  |
Equity in earnings of subsidiaries | (37,111) | 738 | (16,120) | (39,304)
Other (expense) income | (1,732) | 19,895 | (18,561) | 16,439
Income (loss) before income taxes | (38,843) | 20,633 | (34,681) | (22,865)
(Provision) benefit from income taxes | 1,732 | (19,895) | 18,561 | (16,439)
Net income (loss) | (37,111) | 738 | (16,120) | (39,304)
Preferred stock dividends |  |  |  |
Income (loss) applicable to common stockholders | (37,111) | 738 | (16,120) | (39,304)
Changes in comprehensive income (loss) | (1,193) | 1,082 | (2,261) | (775)
Comprehensive income (loss) | (38,304) | 1,820 | (18,381) | (40,079)
Consolidated [Member] |  |  |  |
Revenues | 171,302 | 104,197 | 302,319 | 223,289
Cost of sales | (82,953) | (67,567) | (157,273) | (141,532)
Depreciation, depletion, amortization | (29,897) | (27,166) | (55,772) | (52,420)
General and administrative | (10,359) | (8,296) | (20,573) | (17,016)
Exploration and pre-development | (3,883) | (6,210) | (7,237) | (11,346)
Loss on derivative contracts | (6) | (2,147) | (6) | 4,905
Acquisition costs | (402) | (887) | (402) | (2,147)
Equity in earnings of subsidiaries |  |  |  |
Other (expense) income | (8,190) | (18,723) | (24,408) | (16,541)
Income (loss) before income taxes | 35,612 | (26,799) | 36,648 | (12,808)
(Provision) benefit from income taxes | (11,496) | 132 | (13,150) | (1,307)
Net income (loss) | 24,116 | (26,667) | 23,498 | (14,115)
Preferred stock dividends | (138) | (138) | (276) | (276)
Income (loss) applicable to common stockholders | 23,978 | (26,805) | 23,222 | (14,391)
Changes in comprehensive income (loss) | 1,239 | (1,155) | 2,304 | 781
Comprehensive income (loss) | 25,355 | (27,822) | 25,802 | (13,334)
Revenues | 171,302 | 104,197 | 302,319 | 223,289
Cost of sales | 82,953 | 67,567 | 157,273 | 141,532
Depreciation, depletion, amortization | 29,897 | 27,166 | 55,772 | 52,420
General and administrative | 10,359 | 8,296 | 20,573 | 17,016
Loss on derivative contracts | (6) | (887) | (6) | 4,905
Acquisition costs | 402 | 2,147 | 402 | 2,147
Income (loss) before income taxes | 35,612 | (26,799) | 36,648 | (12,808)
(Provision) benefit from income taxes | 11,496 | (132) | 13,150 | 1,307
Net income (loss) | 24,116 | (26,667) | 23,498 | (14,115)
Preferred stock dividends | 138 | 138 | 276 | 276
Income (loss) applicable to common stockholders | 23,978 | (26,805) | 23,222 | (14,391)
Comprehensive income (loss) | $ 25,355 | $ (27,822) | $ 25,802 | $ (13,334)

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- Definition This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 23 -URI http://asc.fasb.org/extlink&oid=73531572&loc=d3e1043-128460 + Details
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