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Reclassifications
6 Months Ended
Jun. 30, 2020
Reclassifications [Abstract]  
Reclassifications
2.  Reclassifications

Certain 2019 amounts have been reclassified to conform to the 2020 presentation. This reclassification had no impact on the statements of income, the statement of common stockholders’ equity, or the statement of cash flows.