XML 53 R39.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Organization and Nature of Business (Detail) $ in Thousands, T in Millions | Jun. 01, 2018 USD ($) | Mar. 15, 2018 USD ($) | May 31, 2018 T
--- | --- | --- | ---
Organization, Consolidation and Presentation of Financial Statements [Abstract] |  |  |
Processing capacity | T |  |  | 5.5
Payments to acquire assets |  | $ 15,549 |
Quickthree Solutions |  |  |
Business Acquisition [Line Items] |  |  |
Purchase agreement amount | $ 30,000 |  |
Potential earn out | $ 12,750 |  |
Lease term | 3 years |  |

X
- Definition Business Combination, Potential Earn Out Payment + References No definition available. + Details
Name: | snd_BusinessCombinationPotentialEarnOutPayment
Namespace Prefix: | snd_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Current annual processing capacity. + References No definition available. + Details
Name: | snd_CurrentAnnualProcessingCapacity
Namespace Prefix: | snd_
Data Type: | num:massItemType
Balance Type: | na
Period Type: | instant

X
- Definition 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. + References No definition available. + Details
Name: | us-gaap_BusinessAcquisitionLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Term of the lessor's leasing arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
Name: | us-gaap_LessorLeasingArrangementsOperatingLeasesTermOfContract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3213-108585 + Details
Name: | us-gaap_PaymentsToAcquireBusinessesGross
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The cash outflow for purchases of and capital improvements on property, plant and equipment (capital expenditures), software, and other intangible assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3213-108585 + Details
Name: | us-gaap_PaymentsToAcquireProductiveAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=snd_QuickthreeSolutionsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |