XML 57 R40.htm IDEA: XBRL DOCUMENT
v3.20.2

Inventory - Schedule of Inventories (Detail) - USD ($) $ in Thousands | Sep. 30, 2020 | Dec. 31, 2019
--- | --- | ---
Inventory [Line Items] |  |
Inventory, Net, Total | $ 23,568 | $ 21,415
Sand |  |
Inventory [Line Items] |  |
Raw material | 784 | 527
Work in progress | 12,208 | 14,173
Finished goods | 6,710 | 4,097
Spare parts | 3,866 | 2,618
Inventory, Net, Total | $ 23,568 | $ 21,415

X
- Definition Inventory finished goods net. + References No definition available. + Details
Name: | snd_InventoryFinishedGoodsNet
Namespace Prefix: | snd_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Inventory raw material Net. + References No definition available. + Details
Name: | snd_InventoryRawMaterialNet
Namespace Prefix: | snd_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Inventory, spare parts, net. + References No definition available. + Details
Name: | snd_InventorySparePartsNet
Namespace Prefix: | snd_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Inventory work in process net. + References No definition available. + Details
Name: | snd_InventoryWorkInProcessNet
Namespace Prefix: | snd_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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_InventoryLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121566466&loc=d3e6676-107765 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.6(a)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_InventoryNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_PublicUtilitiesInventoryAxis=snd_SandMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |