CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (Unaudited) - USD ($) $ in Thousands	Total	Preferred Stock	Common Stock	Capital Surplus	Retained Earnings	Accumulated Other Comprehensive Income (Loss)
Balance at beginning of period at Dec. 31, 2020	$ 2,079,231	$ 110,705	$ 42,094	$ 1,062,083	$ 791,630	$ 72,719
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income (loss)	98,287				114,419	(16,132)
Cash dividends declared:
Preferred	(4,025)				(4,025)
Common	(18,540)				(18,540)
Issuance of shares of common stock	57		151	(94)
Stock based compensation	4,776			4,776
Balance at end of period at Jun. 30, 2021	2,159,786	110,705	42,245	1,066,765	883,484	56,587
Balance at beginning of period at Mar. 31, 2021	2,056,207	110,705	42,174	1,063,497	833,171	6,660
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income (loss)	111,532				61,605	49,927
Cash dividends declared:
Preferred	(2,012)				(2,012)
Common	(9,280)				(9,280)
Issuance of shares of common stock	1,323		71	1,252
Stock based compensation	2,016			2,016
Balance at end of period at Jun. 30, 2021	2,159,786	110,705	42,245	1,066,765	883,484	56,587
Balance at beginning of period at Dec. 31, 2021	2,182,178	110,705	42,275	1,071,956	962,994	(5,752)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income (loss)	(386,204)				94,962	(481,166)
Cash dividends declared:
Preferred	(4,025)				(4,025)
Common	(22,855)				(22,855)
Issuance of shares of common stock	(116)		164	(280)
Stock based compensation	5,090			5,090
Balance at end of period at Jun. 30, 2022	1,774,068	110,705	42,439	1,076,766	1,031,076	(486,918)
Balance at beginning of period at Mar. 31, 2022	1,931,857	110,705	42,370	1,073,048	992,655	(286,921)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income (loss)	(148,124)				51,873	(199,997)
Cash dividends declared:
Preferred	(2,012)				(2,012)
Common	(11,440)				(11,440)
Issuance of shares of common stock	1,401		69	1,332
Stock based compensation	2,386			2,386
Balance at end of period at Jun. 30, 2022	$ 1,774,068	$ 110,705	$ 42,439	$ 1,076,766	$ 1,031,076	$ (486,918)