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Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands | Total | Common Stock [Member] | Additional Paid-in Capital [Member] | Accumulated Other Comprehensive Income (Loss) [Member] | Retained Earnings [Member] | Less: Treasury Common Stock [Member] | Less: Treasury Preferred Stock [Member] | Less: Unearned Employee Stock Ownership Plan Shares [Member]
--- | --- | --- | --- | --- | --- | --- | --- | ---
Balance at Mar. 31, 2018 | $ 3,408,708 | $ 10,497 | $ 452,746 | $ (4,623) | $ 3,635,561 | $ (525,653) | $ (151,997) | $ (7,823)
Consolidated statement of change in equity |  |  |  |  |  |  |  |
Unrealized net loss on investments, less adoption of ASU 2016-01 | 0 | 0 | 0 | (9,724) | 9,724 | 0 | 0 | 0
Increase in market value of released ESOP shares | 580 | 0 | 580 | 0 | 0 | 0 | 0 | 0
Release of unearned ESOP Shares | 9,392 | 0 | 0 | 0 | 0 | 0 | 0 | 9,392
Purchase of ESOP shares | (5,617) | 0 | 0 | 0 | 0 | 0 | 0 | (5,617)
Foreign currency translation | (1,759) | 0 | 0 | (1,759) | 0 | 0 | 0 | 0
Unrealized net gain (loss) on investments, net of tax | (50,044) | 0 | 0 | (50,044) | 0 | 0 | 0 | 0
Change in fair value of cash flow hedges, net of tax | 451 | 0 | 0 | 451 | 0 | 0 | 0 | 0
Amounts reclassified into earnings on hedging activities | 26 | 0 | 0 | 26 | 0 | 0 | 0 | 0
Adjustment to postretirement benefit obligation | (1,025) | 0 | 0 | (1,025) | 0 | 0 | 0 | 0
Net earnings | 370,857 | 0 | 0 | 0 | 370,857 | 0 | 0 | 0
Common stock dividends | (39,180) | 0 | 0 | 0 | (39,180) | 0 | 0 | 0
Net activity | 283,681 | 0 | 580 | (62,075) | 341,401 | 0 | 0 | 3,775
Balance at Mar. 31, 2019 | 3,692,389 | 10,497 | 453,326 | (66,698) | 3,976,962 | (525,653) | (151,997) | (4,048)
Consolidated statement of change in equity |  |  |  |  |  |  |  |
Increase in market value of released ESOP shares | 493 | 0 | 493 | 0 | 0 | 0 | 0 | 0
Release of unearned ESOP Shares | 4,253 | 0 | 0 | 0 | 0 | 0 | 0 | 4,253
Purchase of ESOP shares | (205) | 0 | 0 | 0 | 0 | 0 | 0 | (205)
Foreign currency translation | 9,377 | 0 | 0 | 9,377 | 0 | 0 | 0 | 0
Unrealized net gain (loss) on investments, net of tax | 97,943 | 0 | 0 | 97,943 | 0 | 0 | 0 | 0
Change in fair value of cash flow hedges, net of tax | (6,301) | 0 | 0 | (6,301) | 0 | 0 | 0 | 0
Amounts reclassified into earnings on hedging activities | (2) | 0 | 0 | (2) | 0 | 0 | 0 | 0
Adjustment to postretirement benefit obligation | 333 | 0 | 0 | 333 | 0 | 0 | 0 | 0
Net earnings | 442,048 | 0 | 0 | 0 | 442,048 | 0 | 0 | 0
Common stock dividends | (19,608) | 0 | 0 | 0 | (19,608) | 0 | 0 | 0
Net activity | 528,331 | 0 | 493 | 101,350 | 422,440 | 0 | 0 | 4,048
Balance at Mar. 31, 2020 | 4,220,720 | 10,497 | 453,819 | 34,652 | 4,399,402 | (525,653) | (151,997) | 0
Consolidated statement of change in equity |  |  |  |  |  |  |  |
Adjustment for adoption of ASU 2016-13 | (2,880) | 0 | 0 | 0 | (2,880) | 0 | 0 | 0
Purchase of ESOP shares | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0
Foreign currency translation | (5,694) | 0 | 0 | (5,694) | 0 | 0 | 0 | 0
Unrealized net gain (loss) on investments, net of tax | 76,969 | 0 | 0 | 76,969 | 0 | 0 | 0 | 0
Change in fair value of cash flow hedges, net of tax | (429) | 0 | 0 | (429) | 0 | 0 | 0 | 0
Amounts reclassified into earnings on hedging activities | 2,746 | 0 | 0 | 2,746 | 0 | 0 | 0 | 0
Adjustment to postretirement benefit obligation | (1,387) | 0 | 0 | (1,387) | 0 | 0 | 0 | 0
Net earnings | 610,856 | 0 | 0 | 0 | 610,856 | 0 | 0 | 0
Common stock dividends | (49,019) | 0 | 0 | 0 | (49,019) | 0 | 0 | 0
Net activity | 631,162 | 0 | 0 | 72,205 | 558,957 | 0 | 0 | 0
Balance at Mar. 31, 2021 | $ 4,851,882 | $ 10,497 | $ 453,819 | $ 106,857 | $ 4,958,359 | $ (525,653) | $ (151,997) | $ 0

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