Earnings per Share - Summary of Reconciliation between Weighted-average Common Shares Outstanding used in Calculation of Basis and Diluted Earnings Per Share (Details) - shares shares in Thousands	3 Months Ended			6 Months Ended
	Sep. 30, 2020	Sep. 30, 2019		Sep. 30, 2020	Sep. 30, 2019
Earnings Per Share [Abstract]
Weighted average common shares outstanding—basic	52,011	49,987	[1]	51,941	49,927	[1]
Net effect of dilutive stock options and non-vested stock		473			458
Weighted average common shares outstanding – diluted	52,011	50,460	[1]	51,941	50,385	[1]

[1] As adjusted; refer to Note 1.