Reclassifications

6 Months Ended

Jun. 30, 2018

Reclassifications [Abstract]

Reclassifications

2. Reclassifications

Certain 2017 amounts have been reclassified to conform to the 2018 presentation. Such reclassifications had no effect on the balance sheets, net income, the statements of common stockholders' equity, or the statements of cash flows.