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Percentage of eligible accounts as defined in the credit agreement for borrowing base determination.

No definition available.

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Percentage of new build, acquired or upgraded eligible inventory or equipment value as defined in the credit agreement for borrowing base determination.

No definition available.

Name:	soi_BorrowingBaseDeterminationPercentageOfNewBuildAcquiredOrUpgradedEligibleInventoryOrEquipmentValue
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Data Type:	num:percentItemType
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Maximum amount of capital expenditure that can be incurred for each fiscal year under the terms of a credit agreement.

No definition available.

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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Amount of unrestricted cash and cash equivalents of the company can be made as adjustment for net indebtedness to EBITDA ratio.

No definition available.

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Percentage of unrestricted cash and cash equivalents of the company and its subsidiaries can be made as adjustment for net indebtedness to EBITDA ratio.

No definition available.

Name:	soi_CashAdjustmentToNetIndebtnessToEbitdaRatioPercentage
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Ratio of consolidated EBITDA to fixed charges, is a ratio used to measure a company's ability to incur additional debt or its ability to pay off existing debt.

No definition available.

Name:	soi_EbitdaToFixedChargesRatio
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Maximum amount borrowed under credit facility as a percent that is subject to commitment fees.

No definition available.

Name:	soi_LineOfCreditFacilityMaximumBorrowingSubjectToCommitmentFeePercent
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Data Type:	num:percentItemType
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Amount of potential additional borrowing capacity under the credit facility.

No definition available.

Name:	soi_LineOfCreditFacilityPotentialIncrementalBorrowingCapacity
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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The ratio is a measurement of leverage calculated as a company's interest bearing liabilities minus cash and cash equivalents, divided by EBITDA.

No definition available.

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

No definition available.

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
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Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Data Type:	xbrli:monetaryItemType
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Period Type:	instant

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

Name:	us-gaap_LineOfCreditFacilityLineItems
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Data Type:	xbrli:stringItemType
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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

No definition available.

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

Amount of cash outflow for payment of an obligation from a lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3291-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(f))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Name:	us-gaap_RepaymentsOfLinesOfCredit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

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Name:	us-gaap_RangeAxis=us-gaap_MinimumMember
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Name:	us-gaap_RangeAxis=us-gaap_MaximumMember
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Name:	us-gaap_CreditFacilityAxis=soi_AdvanceTermLoanCommitmentsMember
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