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Basic and Diluted Net Income Per Share - Schedule of Reconciliation of Basic and Diluted Income Per Share Computations (Details) - shares
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Per share - net income attributable to Where Food Comes From, Inc.:        
Weighted average shares outstanding: Basic 24,745,000 24,792,000 24,857,000 24,879,000
Weighted average shares outstanding: Diluted 24,745,000 24,792,000 24,857,000 24,879,000
Weighted average effects of dilutive securities 149,000 180,000 154,000 183,000
Total 24,894,000 24,972,000 25,011,000 25,062,000
Antidilutive securities: 286,000 283,000 286,000 283,000