Consolidated Statements of Stockholders' Equity (Unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024	Dec. 31, 2023
Common Stock, Shares, Outstanding	42,610,271		42,500,611
Cash dividends declared per common share (in dollars per share)	$ 0.59	$ 0.57
Stockholders' Equity Attributable to Parent	$ 3,033,392	$ 2,884,208	$ 2,993,120	$ 2,895,251
Held In Rabbi Trust At Cost [Member]
Stockholders' Equity Attributable to Parent	(3,524)	(3,403)	(3,383)	(3,298)
Retained Earnings
Stockholders' Equity Attributable to Parent	1,192,008	1,101,061	1,172,724	1,077,488
Deferred Compensation, Share-based Payments [Member]
Stockholders' Equity Attributable to Parent	3,524	3,403	3,383	3,298
AOCI Attributable to Parent [Member]
Stockholders' Equity Attributable to Parent	(70,202)	(119,338)	(90,007)	(114,827)
Common Stock [Member]
Stockholders' Equity Attributable to Parent	424	422	423	427
Additional Paid-in Capital [Member]
Stockholders' Equity Attributable to Parent	$ 1,911,162	$ 1,902,063	$ 1,909,980	$ 1,932,163
Common Class A [Member]
Common Stock, Shares, Outstanding	42,610,271	42,452,457	42,500,611	42,873,187