Earnings Per Share (Table Text Block)	3 Months Ended
Jun. 30, 2023
Earnings Per Share [Abstract]
Schedule Of Earnings Per Share Basic And Diluted [Table Text Block]	For the Quarters Ended June 30, 2023 2022 (Unaudited) (In thousands, except share and per share amounts) Weighted average shares outstanding of Voting Common Stock 19,607,788 19,607,788 Total weighted average shares outstanding for Voting Common Stock and Non-Voting Common Stock 196,077,880 196,077,880 Percent of weighted average shares outstanding of Voting Common Stock 10% 10% Net earnings available to common stockholders $ 256,838 $ 338,345 Voting Common Stock dividends declared – (9,804) Non-Voting Common Stock dividends declared (7,059) – Undistributed earnings available to common stockholders $ 249,779 $ 328,541 Undistributed earnings available to common stockholders allocated to Voting Common Stock $ 24,978 $ 32,854 Undistributed earnings per share of Voting Common Stock $ 1.27 $ 1.68 Dividends declared per share of Voting Common Stock $ – $ 0.50 Basic and diluted earnings per share of Voting Common Stock $ 1.27 $ 2.18 Weighted average shares outstanding of Non-Voting Common Stock 176,470,092 176,470,092 Total weighted average shares outstanding for Voting Common Stock and Non-Voting Common Stock 196,077,880 196,077,880 Percent of weighted average shares outstanding of Non-Voting Common Stock 90% 90% Net earnings available to common stockholders $ 256,838 $ 338,345 Voting Common Stock dividends declared – (9,804) Non-Voting Common Stock dividends declared (7,059) – Undistributed earnings available to common stockholders $ 249,779 $ 328,541 Undistributed earnings available to common stockholders allocated to Non-Voting Common Stock $ 224,801 $ 295,687 Undistributed earnings per share of Non-Voting Common Stock $ 1.27 $ 1.68 Dividends declared per share of Non-Voting Common Stock $ 0.04 $ – Basic and diluted earnings per share of Non-Voting Common Stock$ 1.31 $ 1.68

Earnings Per Share (Table Text Block)

3 Months Ended

Jun. 30, 2023

Schedule Of Earnings Per Share Basic And Diluted [Table Text Block]

For the Quarters Ended June 30, 2023 2022 (Unaudited) (In thousands, except share and per share amounts) Weighted average shares outstanding of Voting Common Stock 19,607,788 19,607,788 Total weighted average shares outstanding for Voting Common Stock and Non-Voting Common Stock 196,077,880 196,077,880 Percent of weighted average shares outstanding of Voting Common Stock 10% 10% Net earnings available to common stockholders $ 256,838 $ 338,345 Voting Common Stock dividends declared – (9,804) Non-Voting Common Stock dividends declared (7,059) – Undistributed earnings available to common stockholders $ 249,779 $ 328,541 Undistributed earnings available to common stockholders allocated to Voting Common Stock $ 24,978 $ 32,854 Undistributed earnings per share of Voting Common Stock $ 1.27 $ 1.68 Dividends declared per share of Voting Common Stock $ – $ 0.50 Basic and diluted earnings per share of Voting Common Stock $ 1.27 $ 2.18 Weighted average shares outstanding of Non-Voting Common Stock 176,470,092 176,470,092 Total weighted average shares outstanding for Voting Common Stock and Non-Voting Common Stock 196,077,880 196,077,880 Percent of weighted average shares outstanding of Non-Voting Common Stock 90% 90% Net earnings available to common stockholders $ 256,838 $ 338,345 Voting Common Stock dividends declared – (9,804) Non-Voting Common Stock dividends declared (7,059) – Undistributed earnings available to common stockholders $ 249,779 $ 328,541 Undistributed earnings available to common stockholders allocated to Non-Voting Common Stock $ 224,801 $ 295,687 Undistributed earnings per share of Non-Voting Common Stock $ 1.27 $ 1.68 Dividends declared per share of Non-Voting Common Stock $ 0.04 $ – Basic and diluted earnings per share of Non-Voting Common Stock$ 1.31 $ 1.68