Consolidated Balance Sheets - USD ($)	Sep. 30, 2022	Dec. 31, 2021	Sep. 30, 2021
ASSETS
CASH AND DUE FROM BANKS	$ 227,298,000	$ 205,053,000	$ 201,901,000
INTEREST-BEARING DEMAND DEPOSITS IN BANKS	138,484,000	323,535,000	359,241,000
Total cash and cash equivalents	365,782,000	528,588,000	561,142,000
SECURITIES AVAILABLE-FOR-SALE, at fair value (amortized cost of these securities was $6,546,471, $5,981,374 and $6,447,510 as of September 30, 2022 and 2021, and December 31, 2021, respectively)	5,745,443,000	6,573,179,000	6,119,984,000
LOANS:
Held-for-investment, excluding PPP loans	6,255,286,000	5,336,179,000	5,147,160,000
PPP loans	202,000	52,793,000	139,334,000
Total loans held-for-investment	6,255,488,000	5,388,972,000	5,286,494,000
Less—allowance for credit losses	(74,108,000)	(63,465,000)	(63,370,000)
Net loans held for investment	6,181,380,000	5,325,507,000	5,223,124,000
Held-for-sale ($15,892, $46,081 and $34,122 at fair value at September 30, 2022 and 2021, and December 31, 2021, respectively)	18,815,000	37,810,000	47,721,000
BANK PREMISES AND EQUIPMENT, net	152,646,000	149,764,000	147,516,000
INTANGIBLE ASSETS, net	315,833,000	316,779,000	317,170,000
OTHER ASSETS	330,445,000	170,834,000	126,601,000
Total assets	13,110,344,000	13,102,461,000	12,543,258,000
LIABILITIES AND SHAREHOLDERS' EQUITY
NONINTEREST-BEARING DEPOSITS	4,200,792,000	3,780,230,000	3,574,405,000
INTEREST-BEARING DEPOSITS	6,941,326,000	6,786,258,000	6,318,712,000
Total deposits	11,142,118,000	10,566,488,000	9,893,117,000
BORROWINGS	774,581,000	671,152,000	648,679,000
TRADE DATE PAYABLE	0	0	174,236,000
OTHER LIABILITIES	61,030,000	105,597,000	93,491,000
Total liabilities	11,977,729,000	11,343,237,000	10,809,523,000
COMMITMENTS AND CONTINGENCIES
SHAREHOLDERS' EQUITY:
COMMON STOCK - ($0.01 par value, authorized 200,000,000 shares; 142,628,163, 142,467,687 and 142,532,116 shares issued at September 30, 2022 and 2021, and December 31, 2021, respectively)	1,426,000	1,425,000	1,425,000
CAPITAL SURPLUS	676,067,000	676,871,000	675,139,000
RETAINED EARNINGS	1,087,543,000	981,675,000	947,724,000
TREASURY STOCK (shares at cost: 933,152, 937,803 and 936,897 at September 30, 2022 and 2021, and December 31, 2021, respectively)	(10,907,000)	(10,090,000)	(9,876,000)
DEFERRED COMPENSATION	10,907,000	10,090,000	9,876,000
ACCUMULATED OTHER COMPREHENSIVE EARNINGS (LOSS), net	(632,421,000)	99,253,000	109,447,000
Total shareholders' equity	1,132,615,000	1,759,224,000	1,733,735,000
Total liabilities and shareholders' equity	$ 13,110,344,000	$ 13,102,461,000	$ 12,543,258,000