Consolidated Statements of Stockholders' Equity (Unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022	Dec. 31, 2021
Common Stock, Shares, Outstanding	44,114,827		45,641,238
Stockholders' Equity Attributable to Parent	$ 2,830,909	$ 2,965,439	$ 2,886,701	$ 3,018,449
Held In Rabbi Trust At Cost [Member]
Stockholders' Equity Attributable to Parent	$ (3,286)	$ (3,179)	(3,227)	(3,146)
Retained Earnings
Cash dividends declared per common share (in dollars per share)	$ 0.55	$ 0.51
Stockholders' Equity Attributable to Parent	$ 971,338	$ 795,651	934,442	766,716
Deferred Compensation, Share-based Payments [Member]
Stockholders' Equity Attributable to Parent	3,286	3,179	3,227	3,146
AOCI Attributable to Parent [Member]
Stockholders' Equity Attributable to Parent	(135,945)	(78,202)	(163,084)	2,183
Common Stock [Member]
Stockholders' Equity Attributable to Parent	439	472	455	472
Additional Paid-in Capital [Member]
Stockholders' Equity Attributable to Parent	$ 1,995,077	$ 2,247,518	$ 2,114,888	$ 2,249,078
Common Class A [Member]
Common Stock, Shares, Outstanding	44,114,827	47,377,125	45,641,238	47,349,778