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Earnings Per Share - Computation of Basic and Diluted Earnings Per Common Share (Detail) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
3 Months Ended 6 Months Ended
Sep. 29, 2018
Sep. 30, 2017
Sep. 29, 2018
Sep. 30, 2017
Numerator:        
Net (loss) income $ (77,025) $ 7,408 $ (77,878) $ 12,671
Less: Undistributed earnings allocated to participating securities   464   806
Net (loss) income attributable to the Company's common shareholders $ (77,025) $ 6,944 $ (77,878) $ 11,865
Denominator:        
Average common shares outstanding 54,105 44,525 50,747 44,457
Basic net (loss) income per share $ (1.42) $ 0.16 $ (1.53) $ 0.27
Diluted net (loss) income per share $ (1.42) $ 0.16 $ (1.53) $ 0.27