CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
ASSETS
Cash and due from banks	$ 317,303	$ 309,045
Interest bearing deposits with other banks and other short-term investments	82,884	54,042
Cash and cash equivalents	400,187	363,087
Time deposits in other financial institutions	1,490	1,740
Securities:
Carried at fair value (cost of $6,415,588 at June 30, 2023, and $6,788,729 at December 31, 2022)	5,798,041	6,147,144
Held to maturity, net of allowance for credit losses of $0 at both June 30, 2023, and December 31, 2022 (fair value of $806,942 at June 30, 2023, and $776,557 at December 31, 2022)	834,673	829,403
Other investments, at cost	72,291	74,567
Loans held for sale	14,353	5,277
Loans receivable:
Held to maturity	11,717,974	11,428,352
Allowance for credit losses	(111,198)	(109,483)
Loans receivable, net	11,606,776	11,318,869
Premises, furniture and equipment, net	186,679	190,479
Premises, furniture and equipment held for sale	3,741	6,851
Other real estate, net	2,677	8,401
Goodwill	576,005	576,005
Core deposit intangibles and customer relationship intangibles, net	21,651	25,154
Servicing rights, net	0	7,840
Cash surrender value on life insurance	195,793	193,403
Other assets	510,359	496,008
TOTAL ASSETS	20,224,716	20,244,228
Deposits:
Demand	4,897,858	5,701,340
Savings	8,772,596	9,994,391
Time	3,993,089	1,817,278
Total deposits	17,663,543	17,513,009
Short-term borrowings	44,364	376,117
Other borrowings	372,403	371,753
Accrued expenses and other liabilities	285,416	248,294
TOTAL LIABILITIES	18,365,726	18,509,173
STOCKHOLDERS' EQUITY:
Common stock (par value $1 per share; 60,000,000 shares authorized at both June 30, 2023, and December 31, 2022; issued 42,644,544 shares at June 30, 2023, and 42,467,394 shares at December 31, 2022)	42,645	42,467
Capital surplus	1,087,358	1,080,964
Retained earnings	1,193,522	1,120,925
Accumulated other comprehensive loss	(575,240)	(620,006)
TOTAL STOCKHOLDERS' EQUITY	1,858,990	1,735,055
TOTAL LIABILITIES AND EQUITY	20,224,716	20,244,228
Preferred Stock
STOCKHOLDERS' EQUITY:
Preferred stock	$ 0	$ 0
Preferred stock, shares outstanding (in shares)	0	0
Series E Fixed-Rate Reset Cumulative Perpetual Preferred Stock
STOCKHOLDERS' EQUITY:
Preferred stock	$ 110,705	$ 110,705
Preferred stock, shares outstanding (in shares)	11,500	11,500