Earnings Per Share	3 Months Ended
	Jun. 30, 2020
Earnings Per Share [Abstract]
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. The unreleased shares, net of shares committed to be released, were 8,216 as of June 30, 2019.   As of June 20, 2020, all of these shares have been released.