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Capital Stock | 12 Months Ended
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Dec. 31, 2023
Equity [Abstract] |
Capital Stock | (11) Capital Stock We have authorized capital stock of 485.0 million shares, which includes 475.0 million shares of common stock and 10.0 million shares of preferred stock. The following is a schedule of changes in the number of common shares outstanding since the beginning of 2022:
|  | Year Ended December 31, |
|  | 2023 |  |  | 2022 |
Beginning balance |  |  | 238,885,730 |  |  |  | 249,792,908 |
Restricted stock grants |  |  | 50,238 |  |  |  | 671,303 |
Restricted stock units vested |  |  | 1,755,345 |  |  |  | 1,827,625 |
Performance stock units vested |  |  | 1,057,245 |  |  |  | 590,940 |
Performance stock dividends |  |  | 6,276 |  |  |  | 1,843 |
Treasury shares |  |  | (714,530 | ) |  |  | (13,998,889 | )
Ending balance |  |  | 241,040,304 |  |  |  | 238,885,730 |
Common Stock Dividends In January 2020, we announced that the board of directors had suspended our common stock dividend. The quarterly cash dividend was reinstated by our board of directors in third quarter 2022. The determination of the amount of future dividends, if any, to be declared and paid is at the sole discretion of the board of directors and will depend on our financial condition, earnings, capital requirements, levels of indebtedness, our future business prospects and other matters our board of directors deems relevant. Our bank credit facility allows for the payment of common dividends, with certain limitations, as described in the facility agreement. Stock Repurchase Program In October 2019, the board of directors approved a stock repurchase program which was increased in size in 2022. Under this program, we may repurchase shares of our common stock in open market transactions, from time to time, in accordance with applicable SEC rules and federal securities laws. In 2023, we repurchased 715,000 shares at an aggregate value of $19.0 million. As of December 31, 2023, we have approximately $1.1 billion of remaining authorization under this program. The following is a schedule of the change in treasury shares since the beginning of 2022:
|  | Year Ended December 31, |
|  | 2023 |  |  | 2022 |
Beginning balance |  |  | 24,001,535 |  |  |  | 10,002,646 |
Rabbi trust shares distributed and/or sold |  |  | (470 | ) |  |  | (1,111 | )
Shares repurchased |  |  | 715,000 |  |  |  | 14,000,000 |
Ending balance |  |  | 24,716,065 |  |  |  | 24,001,535 |

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