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CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (unaudited) - USD ($) $ in Thousands | Total | Murphy Shareholders' Equity | Cumulative Preferred Stock | Common Stock | Capital In Excess Of Par Value | Retained Earnings | Accumulated Other Comprehensive Loss | Treasury Stock | Noncontrolling Interest
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Balance at beginning of period at Dec. 31, 2019 |  |  |  | $ 195,089 | $ 949,445 | $ 6,614,304 | $ (574,161) | $ (1,717,217) | $ 337,151
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |
Exercise of stock options, including income tax benefits |  |  |  | 12 | (156) |  |  |  |
Restricted stock transactions and other |  |  |  |  | (32,604) |  |  |  |
Share-based compensation |  |  |  |  | 8,245 |  |  |  |
Net income (loss) for the period | $ (416,104) |  |  |  |  | (416,104) |  |  | (92,598)
Cash dividends |  |  |  |  |  | (38,392) |  |  |
Foreign currency translation (loss) gain, net of income taxes | (118,411) |  |  |  |  |  | (118,411) |  |
Retirement and postretirement benefit plans, net of income taxes |  |  |  |  |  |  | (9,711) |  |
Deferred loss on interest rate hedges reclassified to interest expense, net of income taxes | 299 |  |  |  |  |  | 299 |  |
Awarded restricted stock, net of forfeitures |  |  |  |  |  |  |  | 25,511 |
Distributions to noncontrolling interest owners |  |  |  |  |  |  |  |  | (32,399)
Balance at end of period at Mar. 31, 2020 | 5,098,303 | $ 4,886,149 | $ 0 | 195,101 | 924,930 | 6,159,808 | (701,984) | (1,691,706) | 212,154
Balance at beginning of period at Dec. 31, 2020 | 4,394,147 |  |  | 195,101 | 941,692 | 5,369,538 | (601,333) | (1,690,661) | 179,810
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |
Exercise of stock options, including income tax benefits |  |  |  |  | (39) |  |  | 39 |
Restricted stock transactions and other |  |  |  |  | (33,000) |  |  |  |
Share-based compensation |  |  |  |  | 5,650 |  |  |  |
Net income (loss) for the period | (287,438) |  |  |  |  | (287,438) |  |  | 20,614
Cash dividends |  |  |  |  |  | (19,287) |  |  |
Foreign currency translation (loss) gain, net of income taxes | 19,897 |  |  |  |  |  | 19,897 |  |
Retirement and postretirement benefit plans, net of income taxes |  |  |  |  |  |  | 4,136 |  |
Deferred loss on interest rate hedges reclassified to interest expense, net of income taxes | 1,690 |  |  |  |  |  | 1,690 |  |
Awarded restricted stock, net of forfeitures |  |  |  |  |  |  |  | 29,206 |
Distributions to noncontrolling interest owners |  |  |  |  |  |  |  |  | (36,006)
Balance at end of period at Mar. 31, 2021 | $ 4,099,609 | $ 3,935,191 | $ 0 | $ 195,101 | $ 914,303 | $ 5,062,813 | $ (575,610) | $ (1,661,416) | $ 164,418

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