Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 3,252	$ 11,821
Accounts receivable	108,110us-gaap_AccountsReceivableNetCurrent	71,384us-gaap_AccountsReceivableNetCurrent
Prepaid expenses and other current assets	11,537	2,910
Derivative instruments	160,217us-gaap_DerivativeAssetsCurrent	7,806us-gaap_DerivativeAssetsCurrent
Other short term assets	8,120us-gaap_OtherAssetsCurrent
Total current assets	291,236us-gaap_AssetsCurrent	93,921us-gaap_AssetsCurrent
Oil and natural gas properties (full cost method)
Proved	4,214,260	3,204,317
Unproved	319,256	208,823
Gas gathering and processing equipment	14,315sogc_GasGatheringAndProcessingEquipment	19,577sogc_GasGatheringAndProcessingEquipment
Office furniture and fixtures	14,030us-gaap_FurnitureAndFixturesGross	11,167us-gaap_FurnitureAndFixturesGross
Property, plant and equipment, Gross	4,561,861us-gaap_PropertyPlantAndEquipmentGross	3,443,884us-gaap_PropertyPlantAndEquipmentGross
Accumulated depletion, depreciation and amortization	(2,495,793)	(2,063,842)
Total property, plant and equipment, net	2,066,068us-gaap_PropertyPlantAndEquipmentNet	1,380,042us-gaap_PropertyPlantAndEquipmentNet
Other assets:
Derivative instruments		4,332us-gaap_DerivativeAssetsNoncurrent
Deferred financing costs, net	34,862	26,502
Goodwill		173,547us-gaap_Goodwill
Deferred income taxes	46,084us-gaap_DeferredTaxAssetsNetNoncurrent
Other long term assets	100	375
Total other assets	81,046us-gaap_OtherAssetsNoncurrent	204,756us-gaap_OtherAssetsNoncurrent
Total assets	2,438,350us-gaap_Assets	1,678,719us-gaap_Assets
Current liabilities:
Accounts payable - trade	83,282us-gaap_AccountsPayableTradeCurrent	16,148us-gaap_AccountsPayableTradeCurrent
Royalties payable	41,368us-gaap_AccruedRoyaltiesCurrent	33,964us-gaap_AccruedRoyaltiesCurrent
Accrued exploration and development	112,580	75,819
Accrued operating expenses and other	71,244sogc_AccruedOperatingExpensesAndOther	47,602sogc_AccruedOperatingExpensesAndOther
Accrued interest payable	30,946us-gaap_InterestPayableCurrent	23,891us-gaap_InterestPayableCurrent
Derivative instruments	4,645us-gaap_DerivativeLiabilitiesCurrent	11,625us-gaap_DerivativeLiabilitiesCurrent
Deferred income taxes	46,084
Current maturities of long-term debt, net of discount	1,988,883us-gaap_LongTermDebtCurrent
Other short term liabilities	14,304us-gaap_OtherLiabilitiesCurrent	278us-gaap_OtherLiabilitiesCurrent
Total current liabilities	2,393,336us-gaap_LiabilitiesCurrent	209,327us-gaap_LiabilitiesCurrent
Long term liabilities:
Long-term debt		1,243,312us-gaap_LongTermDebt
Asset retirement obligation	39,382	13,798
Derivative instruments	2,269us-gaap_DerivativeLiabilitiesNoncurrent	11,272us-gaap_DerivativeLiabilitiesNoncurrent
Other long term liabilities	67,155us-gaap_OtherLiabilitiesNoncurrent
Total long term liabilities	108,806us-gaap_Liabilities	1,268,382us-gaap_Liabilities
Commitments and contingencies
Member's capital
Preferred stock, $0.01 par value, 10,000,000 authorized shares, 2,508,945 shares issued and outstanding at December 31, 2014; no shares authorized at December 31, 2013	25us-gaap_PreferredStockValue
Common stock, $0.10 par value, 650,000,000 authorized shares, 200,975,778 and 118,862,689 shares issued and outstanding at December 31, 2014 and 2013, respectively	20,096us-gaap_CommonStockValue	11,885us-gaap_CommonStockValue
Additional paid in capital	1,564,805	1,511,123
Accumulated deficit	(1,648,718)	(1,321,998)
Total shareholders’ equity	(63,792)	201,010
Total liabilities and shareholders’ equity	$ 2,438,350	$ 1,678,719

Accrual of costs incurred related to oil and gas property, exploration and development activities, including capitalized costs and costs charged to expense. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

No definition available.