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Note 14 - Net Income Per Share (Tables) | 12 Months Ended
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Dec. 31, 2019
Notes Tables |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
|  | Year Ended December 31, |
|  | 2019 |  |  | 2018 |
Numerator: |  |  |  |  |  |  |  |
Net income (loss) attributable to SPAR Group, Inc. |  | $ | 2,419 |  |  | $ | (1,551 | )
Denominator: |  |  |  |  |  |  |  |
Shares used in basic net income per share calculation |  |  | 20,916 |  |  |  | 20,684 |
Effect of diluted securities: |  |  |  |  |  |  |  |
Stock options and unvested restricted shares |  |  | 241 |  |  |  | – |
Shares used in diluted net income per share calculations |  |  | 21,157 |  |  |  | 20,684 |
Basic net income (loss) per common share: |  |  | $0.12 |  |  |  | $ (0.07) |
Diluted net income (loss) per common share: |  |  | $0.11 |  |  |  | $ (0.07) |

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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=6371337&loc=d3e3550-109257 + Details
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