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Note 4 - Credit Facilities and Other Debt (Tables) | 3 Months Ended
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Mar. 31, 2021
Notes Tables |
Schedule of Debt [Table Text Block] |
|  | Interest Rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|  | as of |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|  | March 31, 2021 |  |  | 2021 |  |  | 2022 |  |  | 2023 |  |  | 2024 |  |  | 2025 |  |  | 2026 |
Australia - National Australia Bank |  |  | 6.56 | % |  |  | 9 |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
China - Industrial Bank |  |  | 6.00 | % |  |  | 460 |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
China - CCB Bank |  |  | 6.00 | % |  |  | 153 |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Mexico - Ve Por Mas |  |  | 7.30 | % |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Mexico - Bancomer Bank |  |  | 9.60 | % |  |  | 244 |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
USA - North Mill Capital |  |  | 6.75 | % |  |  | 11,774 |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
USA - Fifth Third Bank |  |  | 3.60 | % |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
USA - Resource Plus Seller Notes |  |  | 1.85 | % |  |  | 300 |  |  |  | 300 |  |  |  | 700 |  |  |  | - |  |  |  | - |  |  |  | - |
Total |  |  |  |  |  | $ | 12,940 |  |  | $ | 300 |  |  | $ | 700 |  |  | $ | - |  |  | $ | - |  |  | $ | – |
Credit And Debt Facilities Unused Availability [Table Text Block] |
|  | March 31, |  |  | December 31, |
|  | 2021 |  |  | 2020 |
Unused Availability: |  |  |  |  |  |  |  |
United States / Canada |  | $ | 6,726 |  |  | $ | 10,238 |
Australia |  |  | 599 |  |  |  | 463 |
Mexico |  |  | 390 |  |  |  | 262 |
Total Unused Availability |  | $ | 7,715 |  |  | $ | 10,963 |

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- Definition Credit and debt facilities unused availability table text block. + References No definition available. + Details
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Namespace Prefix: | sgrp_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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- Definition Tabular disclosure of information pertaining to short-term and long-debt instruments or arrangements, including but not limited to identification of terms, features, collateral requirements and other information necessary to a fair presentation. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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