Represents the period of time prior to the debt instrument maturity date.

No definition available.

Name:	sogc_NumberOfDaysPriorToMaturityDateOfDebtInstrumentDuringWhichTermLoanMatures
Namespace Prefix:	sogc_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Represent the period of time allowed by the covenants, under a debt instrument, that the entity can cure a qualified audit opinion default.

+ References

No definition available.

+ Details

Name:	sogc_PeriodCureDefaultQualifiedAuditOpinion
Namespace Prefix:	sogc_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Represent the period of time under a debt instrument that the lender must stop demanding the repayment of a loan.

+ References

No definition available.

+ Details

Name:	sogc_PeriodDebtInstrumentStandstill
Namespace Prefix:	sogc_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 55

-Paragraph 8

-URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400

+ Details

Name:	us-gaap_DebtInstrumentFaceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

When presenting a range of interest rates, the lowest effective rate for funds borrowed under the debt agreement as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22(a)(1))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_DebtInstrumentInterestRateEffectivePercentageRateRangeMinimum
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Weighted average interest rate of debt outstanding.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtWeightedAverageInterestRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The cash inflow from amounts received from issuance of long-term debt that is wholly or partially secured by collateral. Excludes proceeds from tax exempt secured debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

-URI http://asc.fasb.org/extlink&oid=6513228

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 14

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3255-108585

+ Details

Name:	us-gaap_ProceedsFromIssuanceOfSecuredDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	us-gaap_DebtInstrumentAxis=sogc_IncrementalTermLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=sogc_TermLoanFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Debt - Term Loan Facility (Details 3) (USD $)	12 Months Ended		0 Months Ended		12 Months Ended
Debt - Term Loan Facility (Details 3) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 16, 2014	Jan. 23, 2013	Dec. 31, 2014	Dec. 14, 2012
Debt
Proceeds from borrowing	$ 153,500,000	$ 490,000,000
Term Loan Facility
Debt
Period prior to debt maturity			91 days
Face amount of debt	650,000,000					500
Proceeds from borrowing				150,000,000
Weighted average interest rate (as a percent)					8.75%
Period to cure qualified audit opinion default					180 days
Standstill period					180 days
Incremental Term Loan
Debt
Face amount of debt			50,000,000
Weighted average interest rate (as a percent)					8.80%
Incremental Term Loan \| Variable Rate Base Adjusted Eurodollar
Debt
Variable interest margin (as a percent)			7.50%
Interest rate floor			1.25%
Incremental Term Loan \| Alternate Base Rate
Debt
Variable interest margin (as a percent)			6.50%
Interest rate floor			2.25%