Earnings Per Share	6 Months Ended
	Sep. 30, 2020
Earnings Per Share [Abstract]
2. Earnings Per Share	2. Earnings per Share Our earnings per share is calculated by dividing our earnings available to common stockholders by the weighted average common shares outstanding, basic and diluted. The weighted average common shares outstanding exclude post-1992 shares of the employee stock ownership plan that have not been committed to be released. As of September 30, 2020 and 2019, respectively, all of these shares were released.