CONSOLIDATED STATEMENTS OF EQUITY - USD ($) shares in Thousands, $ in Thousands	Total	Series G	Preferred Stock	Preferred Stock Series G	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Income (Loss)	Retained Earnings
Beginning balance ( in shares) at Dec. 31, 2020			14,980		10,737
Beginning balance at Dec. 31, 2020	$ 997,935		$ 363,204		$ 10,737	$ 122,899	$ (13,923)	$ 515,018
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	136,089							136,089
Other comprehensive income (loss) net of tax	17,776						17,776
Cash dividends, preferred stock	(24,677)							(24,677)
Cash dividends, common stock	(37,873)							(37,873)
Issuance of stock (in shares)				5,000	29
Issuance of stock	145	$ 121,327		$ 121,327	$ 29	116
Stock-based compensation cost	4,310					4,310
Other stock-based award activity	(1,332)					(1,332)
Ending balance (in shares) at Dec. 31, 2021			19,980		10,766
Ending balance at Dec. 31, 2021	1,213,700		$ 484,531		$ 10,766	125,993	3,853	588,557
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	178,144							178,144
Other comprehensive income (loss) net of tax	(54,696)						(54,696)
Cash dividends, preferred stock	(27,165)							(27,165)
Cash dividends, common stock	(41,006)							(41,006)
Issuance of stock (in shares)					35
Issuance of stock	225				$ 35	190
Stock-based compensation cost	4,625					4,625
Other stock-based award activity	(1,869)					(1,869)
Ending balance (in shares) at Dec. 31, 2022			19,980		10,801
Ending balance at Dec. 31, 2022	1,271,958		$ 484,531		$ 10,801	128,939	(50,843)	698,530
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	200,003							200,003
Other comprehensive income (loss) net of tax	10,698						10,698
Cash dividends, preferred stock	(27,165)							(27,165)
Cash dividends, common stock	(47,652)							(47,652)
Issuance of stock (in shares)					41
Issuance of stock	274				$ 41	233
Stock-based compensation cost	6,801					6,801
Other stock-based award activity	(3,054)					(3,054)
Ending balance (in shares) at Dec. 31, 2023			19,980		10,842
Ending balance at Dec. 31, 2023	$ 1,411,863		$ 484,531		$ 10,842	$ 132,919	$ (40,145)	$ 823,716