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Consolidated Statements of Stockholders' Equity (unaudited) - USD ($) $ in Thousands | Total | Common Stock [Member] | Capital in Excess of Par Value [Member] | Retained Earnings [Member] | Accumulated Other Comprehensive Losses [Member]
--- | --- | --- | --- | --- | ---
Beginning balance at Mar. 31, 2018 | $ 1,417,690 | $ 483 | $ 122,379 | $ 1,298,840 | $ (4,012)
Net Earnings (Loss) | 66,339 |  |  | 66,339 |
Stock Option Exercises and Restricted Share Vesting | 1,992 |  | 1,992 |  |
Purchase and Retirement of Common Stock | (52,344) | (5) | (52,339) |  |
Dividends to Stockholders | (4,791) |  |  | (4,791) |
Stock Compensation Expense | 3,493 | 1 | 3,492 |  |
Shares Redeemed to Settle Employee Taxes | (956) |  | (956) |  |
Unfunded Pension Liability, net of tax | 56 |  |  |  | 56
Ending Balance at Jun. 30, 2018 | 1,431,479 | 479 | 74,568 | 1,360,388 | (3,956)
Beginning balance at Mar. 31, 2018 | 1,417,690 | 483 | 122,379 | 1,298,840 | (4,012)
Net Earnings (Loss) | 196,657 |  |  |  |
Ending Balance at Dec. 31, 2018 | 1,420,337 | 462 |  | 1,423,719 | (3,844)
Beginning balance at Jun. 30, 2018 | 1,431,479 | 479 | 74,568 | 1,360,388 | (3,956)
Net Earnings (Loss) | 72,603 |  |  | 72,603 |
Purchase and Retirement of Common Stock | (70,060) | (7) | (70,053) |  |
Dividends to Stockholders | (4,712) |  |  | (4,712) |
Stock Compensation Expense | 4,066 |  | 4,066 |  |
Shares Redeemed to Settle Employee Taxes | (829) |  | (829) |  |
Unfunded Pension Liability, net of tax | 56 |  |  |  | 56
Ending Balance at Sep. 30, 2018 | 1,432,603 | 472 | 7,752 | 1,428,279 | (3,900)
Net Earnings (Loss) | 57,715 |  |  | 57,715 |
Purchase and Retirement of Common Stock | (69,396) | (10) | (11,745) | (57,641) |
Dividends to Stockholders | (4,634) |  |  | (4,634) |
Stock Compensation Expense | 4,050 |  | 4,050 |  |
Shares Redeemed to Settle Employee Taxes | (57) |  | (57) |  |
Unfunded Pension Liability, net of tax | 56 |  |  |  | 56
Ending Balance at Dec. 31, 2018 | 1,420,337 | 462 |  | 1,423,719 | (3,844)
Beginning balance at Mar. 31, 2019 | 1,209,487 | 451 |  | 1,212,352 | (3,316)
Net Earnings (Loss) | 41,304 |  |  | 41,304 |
Stock Option Exercises and Restricted Share Vesting | 396 |  | 396 |  |
Purchase and Retirement of Common Stock | (198,355) | (23) | (7,748) | (190,584) |
Dividends to Stockholders | (4,316) |  |  | (4,316) |
Stock Compensation Expense | 8,219 | 1 | 8,218 |  |
Shares Redeemed to Settle Employee Taxes | (866) |  | (866) |  |
Cumulative Effect of Change in Accounting for Leases | (636) |  |  | (636) |
Unfunded Pension Liability, net of tax | 33 |  |  |  | 33
Ending Balance at Jun. 30, 2019 | 1,055,266 | 429 |  | 1,058,120 | (3,283)
Beginning balance at Mar. 31, 2019 | 1,209,487 | 451 |  | 1,212,352 | (3,316)
Net Earnings (Loss) | (1,535) |  |  |  |
Ending Balance at Dec. 31, 2019 | 897,327 | 416 | 8,325 | 891,801 | (3,215)
Beginning balance at Jun. 30, 2019 | 1,055,266 | 429 |  | 1,058,120 | (3,283)
Net Earnings (Loss) | 71,793 |  |  | 71,793 |
Stock Option Exercises and Restricted Share Vesting | 1,371 |  | 1,371 |  |
Purchase and Retirement of Common Stock | (115,532) | (13) | (366) | (115,153) |
Dividends to Stockholders | (4,163) |  |  | (4,163) |
Stock Compensation Expense | 3,918 |  | 3,918 |  |
Shares Redeemed to Settle Employee Taxes | (1,933) |  | (1,933) |  |
Unfunded Pension Liability, net of tax | 35 |  |  |  | 35
Ending Balance at Sep. 30, 2019 | 1,010,755 | 416 | 2,990 | 1,010,597 | (3,248)
Net Earnings (Loss) | (114,632) |  |  | (114,632) |
Stock Option Exercises and Restricted Share Vesting | 1,229 |  | 1,229 |  |
Dividends to Stockholders | (4,164) |  |  | (4,164) |
Stock Compensation Expense | 4,270 |  | 4,270 |  |
Shares Redeemed to Settle Employee Taxes | (164) |  | (164) |  |
Unfunded Pension Liability, net of tax | 33 |  |  |  | 33
Ending Balance at Dec. 31, 2019 | $ 897,327 | $ 416 | $ 8,325 | $ 891,801 | $ (3,215)

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