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Earnings Per Common Share ("EPS") - Components of Basic and Diluted EPS Computations (Detail) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
EPS — basic and diluted:    
Net loss (numerator) $ (12,916) $ (9,322)
Weighted average common shares (denominator) 246,631 212,467
Net loss per share $ (0.05) $ (0.04)