Quarterly report pursuant to Section 13 or 15(d)

Supplemental Guarantor Information - Condensed Consolidating Statement of Operations (Details)

v3.4.0.3
Supplemental Guarantor Information - Condensed Consolidating Statement of Operations (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Dec. 31, 2015
Condensed Income Statements Captions [Line Items]      
Revenues $ 77,715 $ 127,907  
Operating costs and expenses:      
Lease operating expenses 44,469 53,331  
Production taxes 526 637  
Gathering and transportation 5,092 4,824  
Depreciation, depletion, amortization and accretion 63,733 125,467  
Ceiling test write-down of oil and natural gas properties 116,559 260,390 $ 987,200
General and administrative expenses 16,443 20,766  
Derivative gain (2,493)    
Total costs and expenses 244,329 465,415  
Operating income (loss) (166,614) (337,508)  
Interest expense:      
Incurred 27,814 22,946  
Capitalized (343) (1,783)  
Other (income) expense, net 1,306 (2)  
Income (loss) before income tax expense (benefit) (195,391) (358,669)  
Income tax benefit (4,882) (103,574)  
Net income (loss) (190,509) (255,095)  
Parent Company      
Condensed Income Statements Captions [Line Items]      
Revenues 30,512 82,463  
Operating costs and expenses:      
Lease operating expenses 24,945 37,386  
Production taxes 526 637  
Gathering and transportation 1,553 2,548  
Depreciation, depletion, amortization and accretion 20,623 75,152  
Ceiling test write-down of oil and natural gas properties   190,695  
General and administrative expenses 6,613 12,388  
Derivative gain (2,493)    
Total costs and expenses 51,767 318,806  
Operating income (loss) (21,255) (236,343)  
Earnings (loss) of affiliates (73,029) (65,627)  
Interest expense:      
Incurred 27,695 22,232  
Capitalized (224) (1,069)  
Other (income) expense, net 1,306 (2)  
Income (loss) before income tax expense (benefit) (123,061) (323,131)  
Income tax benefit (3,676) (68,036)  
Net income (loss) (119,385) (255,095)  
Guarantor Subsidiaries      
Condensed Income Statements Captions [Line Items]      
Revenues 47,203 45,444  
Operating costs and expenses:      
Lease operating expenses 19,524 15,945  
Gathering and transportation 3,539 2,276  
Depreciation, depletion, amortization and accretion 38,161 50,315  
Ceiling test write-down of oil and natural gas properties 50,384 69,695  
General and administrative expenses 9,830 8,378  
Total costs and expenses 121,438 146,609  
Operating income (loss) (74,235) (101,165)  
Interest expense:      
Incurred 119 714  
Capitalized (119) (714)  
Income (loss) before income tax expense (benefit) (74,235) (101,165)  
Income tax benefit (1,206) (35,538)  
Net income (loss) (73,029) (65,627)  
Eliminations      
Operating costs and expenses:      
Depreciation, depletion, amortization and accretion 4,949    
Ceiling test write-down of oil and natural gas properties 66,175    
Total costs and expenses 71,124    
Operating income (loss) (71,124)    
Earnings (loss) of affiliates 73,029 65,627  
Interest expense:      
Income (loss) before income tax expense (benefit) 1,905 65,627  
Net income (loss) $ 1,905 $ 65,627