Quarterly report pursuant to Section 13 or 15(d)

Subsequent Events - Schedule of Condensed Consolidated Balance sheet on a Pro forma Basis (Details)

v3.10.0.1
Subsequent Events - Schedule of Condensed Consolidated Balance sheet on a Pro forma Basis (Details) - USD ($)
$ in Thousands
Sep. 30, 2018
Dec. 31, 2017
Current assets:    
Cash and cash equivalents $ 339,063 $ 99,058
Total receivables 131,215 78,203
Prepaid expenses and other assets 19,699 13,419
Total current assets 489,977 190,680
Oil and natural gas properties and other, net 522,781 579,016
Restricted deposits for ARO 20,577 25,394
Other assets 69,014 60,393
Total assets 1,102,349 907,580
Current liabilities:    
Accounts payable 95,502 79,667
Undistributed oil and natural gas proceeds 34,225 20,129
Advances from joint interest partners 31,012 3,998
Asset retirement obligations 30,207 23,613
Current maturities of long-term debt: (Note 2)    
Principal 189,829  
Carrying value adjustments 34,985 22,925
Current maturities of long-term debt - carrying value 224,814 22,925
Accrued liabilities 31,058 17,930
Total current liabilities 446,818 168,262
Long-term debt: (Note 2)    
Principal 713,365 889,790
Carrying value adjustments 45,758 79,337
Long term debt, less current portion - carrying value 759,123 969,127
Asset retirement obligations, less current portion 283,009 276,833
Other liabilities 73,175 66,866
Shareholders’ deficit:    
Common stock 1 1
Additional paid-in capital 549,569 545,820
Retained earnings (deficit) (985,179) (1,095,162)
Treasury stock, at cost (24,167) (24,167)
Total shareholders' equity (deficit) (459,776) (573,508)
Total liabilities and shareholders' equity (deficit) 1,102,349 $ 907,580
Extinguishment of Debt Adjustments    
Current assets:    
Cash and cash equivalents [1] (954,100)  
Prepaid expenses and other assets [2] 2,138  
Total current assets (951,962)  
Total assets (951,962)  
Current maturities of long-term debt: (Note 2)    
Principal [3] (189,829)  
Carrying value adjustments [4] (34,985)  
Current maturities of long-term debt - carrying value (224,814)  
Accrued liabilities [5] (14,989)  
Total current liabilities (239,803)  
Long-term debt: (Note 2)    
Principal [3] (713,365)  
Carrying value adjustments [4] (45,758)  
Long term debt, less current portion - carrying value (759,123)  
Shareholders’ deficit:    
Retained earnings (deficit) [6] 46,964  
Total shareholders' equity (deficit) 46,964  
Total liabilities and shareholders' equity (deficit) (951,962)  
Debt Issuance Adjustments    
Current assets:    
Cash and cash equivalents [7] 671,887  
Total current assets 671,887  
Total assets 671,887  
Current maturities of long-term debt: (Note 2)    
Accrued liabilities [8] 3,787  
Total current liabilities 3,787  
Long-term debt: (Note 2)    
Principal [9] 625,000  
Borrowings on revolving bank credit facility [10] 61,000  
Carrying value adjustments [11] (17,900)  
Long term debt, less current portion - carrying value 668,100  
Shareholders’ deficit:    
Total liabilities and shareholders' equity (deficit) 671,887  
Pro Forma    
Current assets:    
Cash and cash equivalents 56,850  
Total receivables 131,215  
Prepaid expenses and other assets 21,837  
Total current assets 209,902  
Oil and natural gas properties and other, net 522,781  
Restricted deposits for ARO 20,577  
Other assets 69,014  
Total assets 822,274  
Current liabilities:    
Accounts payable 95,502  
Undistributed oil and natural gas proceeds 34,225  
Advances from joint interest partners 31,012  
Asset retirement obligations 30,207  
Current maturities of long-term debt: (Note 2)    
Accrued liabilities 19,856  
Total current liabilities 210,802  
Long-term debt: (Note 2)    
Principal 625,000  
Borrowings on revolving bank credit facility 61,000  
Carrying value adjustments (17,900)  
Long term debt, less current portion - carrying value 668,100  
Asset retirement obligations, less current portion 283,009  
Other liabilities 73,175  
Shareholders’ deficit:    
Common stock 1  
Additional paid-in capital 549,569  
Retained earnings (deficit) (938,215)  
Treasury stock, at cost (24,167)  
Total shareholders' equity (deficit) (412,812)  
Total liabilities and shareholders' equity (deficit) $ 822,274  
[1] Cash used to extinguish debt including principal, interest, tender offer premiums and redemption premiums.
[2] Prepaid interest related to the Second Lien Term Loan and the Unsecured Senior Notes.
[3] Payment of outstanding debt principal.
[4] Elimination of carrying value adjustments either through payments or write off of remaining balances.
[5] Payment of interest related to the Second Lien Loan and the Unsecured Senior Notes accrued as of September 30, 2018.
[6] Net gain from the write off of the remaining balances of carrying value adjustments, reduced for interest payments on the 1.5 Lien Term Loan, the Second Lien PIK Toggle Notes and the Third Lien PIK Toggle Notes. In addition, the net gain was reduced for premiums related to repurchases pursuant to the early tender offer, redemptions premiums and certain prepayments paid on the existing notes and loans.
[7] Net proceeds from the issuance of the Senior Second Lien Notes and borrowings under the New Revolving Credit Agreement, less debt issuance costs paid of $14.1 million.
[8] Accrued debt issuance costs related to the Senior Second Lien Notes.
[9] Issuance of the Senior Second Lien Notes.
[10] Borrowings under the New Revolving Credit Agreement.
[11] Paid and accrued debt issuance costs related to the Senior Second Lien Notes and New Revolving Credit Agreement.