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v3.21.4

Major Customers (Details) | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2020 | Sep. 30, 2021 | Dec. 31, 2019
Major Customers (Details) [Line Items] |  |  |
Revenues |  |  | 22.00%
Accounts receivable |  | 28.00% |
Two Major Customer [Member] |  |  |
Major Customers (Details) [Line Items] |  |  |
Revenues |  | 44.00% | 23.00%
One Major Customer [Member] |  |  |
Major Customers (Details) [Line Items] |  |  |
Accounts Receivable Percentage | 14.00% |  |

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- Definition Accounts receivable. + References No definition available. + Details
Name: | strn_AccountsReceivable
Namespace Prefix: | strn_
Data Type: | dtr:percentItemType
Balance Type: | na
Period Type: | instant

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- References No definition available. + Details
Name: | strn_AccountsReceivablePercentage
Namespace Prefix: | strn_
Data Type: | dtr:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition Company revenue. + References No definition available. + Details
Name: | strn_CompanyRevenue
Namespace Prefix: | strn_
Data Type: | dtr:percentItemType
Balance Type: | na
Period Type: | instant

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- References No definition available. + Details
Name: | strn_MajorCustomersDetailsLineItems
Namespace Prefix: | strn_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | srt_MajorCustomersAxis=strn_TwoMajorCustomerMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | srt_MajorCustomersAxis=strn_OneMajorCustomerMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |