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Weighted Average Common Shares - Summary of Weighted Average Numbers of Common Shares Used to Compute Basic and Diluted Net Income Per Share (Detail) - shares
shares in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
 [1]
Jun. 30, 2020
Jun. 30, 2019
Earnings Per Share [Abstract]        
Basic common shares outstanding 69,094 70,105 69,467 69,972
Common stock equivalents 1,806   1,883 1,810
Diluted common shares outstanding 70,900 70,105 71,350 71,782
[1]

Due to the fact that we reported a loss from continuing operations for the quarter ended June 30, 2019, potential common stock equivalents are excluded from diluted common shares outstanding. Per FASB ASC Topic 260 – Earnings Per Share, an entity that reports discontinued operations shall use income or loss from continuing operations as the benchmark for calculating diluted common shares outstanding, and as such, we have zero common stock equivalents since these shares would have an anti-dilutive effect on our net loss per share for the quarter ended June 30, 2019.