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Note 3 - Earnings Per Share (Tables) | 6 Months Ended
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Jun. 30, 2021
Notes Tables |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
|  | Three Months Ended |  |  | Six Months Ended |
|  | June 30, |  |  | June 30, |
|  | 2021 |  |  | 2020 |  |  | 2021 |  |  | 2020 |
Numerator: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income (loss) attributable to SPAR Group, Inc. |  | $ | 514 |  |  | $ | (103 | ) |  | $ | 1,431 |  |  | $ | 193 |
Denominator: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares used in basic net income per share calculation |  |  | 21,262 |  |  |  | 21,108 |  |  |  | 21,225 |  |  |  | 21,107 |
Effect of diluted securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock options and unvested restricted shares |  |  | 355 |  |  |  | 17 |  |  |  | 375 |  |  |  | 50 |
Shares used in diluted net income per share calculations |  |  | 21,617 |  |  |  | 21,125 |  |  |  | 21,600 |  |  |  | 21,157 |
Basic and diluted net income per common share: |  | $ | 0.02 |  |  | $ | 0.00 |  |  | $ | 0.07 |  |  | $ | 0.01 |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 + Details
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