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Schedule of Reconciliation of Basic and Diluted Income Per Share Computations (Details) - shares
shares in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Per share - net income:        
Weighted average shares outstanding 6,100 6,219 6,151 6,228
Weighted average shares outstanding 6,100 6,219 6,151 6,228
Weighted average effects of dilutive securities 86 39 90 43
Total 6,186 6,258 6,241 6,271
Antidilutive securities: 17 70 17 66