Stockholders' Equity (Summary of Regular Quarterly Dividend) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended							9 Months Ended		12 Months Ended
	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cash dividend (in usd per share)	$ 1.05	$ 1.05	$ 1.05	$ 1.05	$ 1.05	$ 1.05	$ 0.90	$ 3.15		$ 4.05
Payment of dividends								$ 79,744	$ 76,273
Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Payment of dividends	$ 26,590	$ 26,591	$ 26,563	$ 26,453	$ 26,701	$ 26,702	$ 22,870	$ 79,744		$ 102,726