XML 48 R35.htm IDEA: XBRL DOCUMENT
v3.21.2

Organization and Nature of Business (Detail) T in Millions | Jun. 30, 2021 T
--- | ---
Business Acquisition [Line Items] |
Processing capacity | 7.1
Eagle Materials Holdings [Member] | BNSF [Member] |
Business Acquisition [Line Items] |
Processing capacity | 1.6

X
- Definition Current annual processing capacity. + References No definition available. + Details
Name: | snd_CurrentAnnualProcessingCapacity
Namespace Prefix: | snd_
Data Type: | dtr-types: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
- Details
Name: | us-gaap_BusinessAcquisitionAxis=snd_EagleMaterialsHoldingsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DistributionsMadeToMemberOrLimitedPartnerByDistributionTypeAxis=snd_BNSFMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |