Consolidated Statements of Changes in Equity (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock [Member]	Capital Surplus [Member]	Retained Earnings [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Total Shareholders' Equity [Member]	Non-Controlling Interests [Member]
Balance, beginning of period (in shares) at Dec. 31, 2020		75,995			6,358
Balance, beginning of period at Dec. 31, 2020	$ 5,291,561	$ 5	$ 1,368,062	$ 3,973,675	$ (411,344)	$ 335,868	$ 5,266,266	$ 25,295
Net income	144,308			146,060			146,060	(1,752)
Other comprehensive income (loss)	(114,459)					(114,459)	(114,459)
Repurchase of common stock (in shares)					260
Repurchase of common stock	(20,071)				$ (20,071)		(20,071)
Stock options exercised (in shares)		17
Stock options exercised	949		949				949
Non-vested shares awarded, net (in shares)		232
Vesting of non-vested shares (in shares)					68
Vesting of non-vested shares	(5,815)				$ (5,815)		(5,815)
Share-based compensation	2,724		2,724				2,724
Cash dividends on common stock	(36,192)			(36,192)			(36,192)
Capital calls and distributions, net	(661)							(661)
Balance, end of period (in shares) at Mar. 31, 2021		76,244			6,686
Balance, end of period at Mar. 31, 2021	5,262,344	$ 5	1,371,735	4,083,543	$ (437,230)	221,409	5,239,462	22,882
Balance, beginning of period (in shares) at Dec. 31, 2021		76,254			7,786
Balance, beginning of period at Dec. 31, 2021	5,368,371	$ 5	1,378,794	4,447,691	$ (535,129)	72,371	5,363,732	4,639
Net income	62,452			62,488			62,488	(36)
Other comprehensive income (loss)	(490,197)					(490,197)	(490,197)
Repurchase of common stock (in shares)					476
Repurchase of common stock	(48,074)				$ (48,074)		(48,074)
Stock options exercised (in shares)		1
Stock options exercised	37		37				37
Non-vested shares awarded, net (in shares)		157
Vesting of non-vested shares (in shares)					46
Vesting of non-vested shares	(4,944)				$ (4,944)		(4,944)
Share-based compensation	2,835		2,835				2,835
Cash dividends on common stock	(36,295)			(36,295)			(36,295)
Capital calls and distributions, net	(661)							(661)
Balance, end of period (in shares) at Mar. 31, 2022		76,412			8,308
Balance, end of period at Mar. 31, 2022	$ 4,853,524	$ 5	$ 1,381,666	$ 4,473,884	$ (588,147)	$ (417,826)	$ 4,849,582	$ 3,942