Consolidated Balance Sheets - USD ($)	Jun. 30, 2022	Dec. 31, 2021	Jun. 30, 2021
ASSETS
CASH AND DUE FROM BANKS	$ 242,665,000	$ 205,053,000	$ 190,061,000
INTEREST-BEARING DEMAND DEPOSITS IN BANKS	222,899,000	323,535,000	654,531,000
Total cash and cash equivalents	465,564,000	528,588,000	844,592,000
SECURITIES AVAILABLE-FOR-SALE, at fair value (amortized cost of these securities was $6,722,336, $5,405,189 and $6,447,510 as of June 30, 2022 and 2021 and December 31, 2021, respectively)	6,215,036,000	6,573,179,000	5,578,048,000
LOANS:
Held-for-investment, excluding PPP loans	5,876,281,000	5,336,179,000	4,984,210,000
PPP loans	2,301,000	52,793,000	320,392,000
Total loans held-for-investment	5,878,582,000	5,388,972,000	5,304,602,000
Less—allowance for credit losses	(71,932,000)	(63,465,000)	(62,138,000)
Net loans held for investment	5,806,650,000	5,325,507,000	5,242,464,000
Held-for-sale ($23,848, $56,257 and $34,122 at fair value at June 30, 2022 and 2021 and December 31, 2021, respectively)	26,445,000	37,810,000	61,802,000
BANK PREMISES AND EQUIPMENT, net	149,280,000	149,764,000	147,655,000
INTANGIBLE ASSETS, net	316,139,000	316,779,000	317,568,000
OTHER ASSETS	281,098,000	170,834,000	136,954,000
Total assets	13,260,212,000	13,102,461,000	12,329,083,000
LIABILITIES AND SHAREHOLDERS' EQUITY
NONINTEREST-BEARING DEPOSITS	4,104,034,000	3,780,230,000	3,427,038,000
INTEREST-BEARING DEPOSITS	7,018,949,000	6,786,258,000	6,354,656,000
Total deposits	11,122,983,000	10,566,488,000	9,781,694,000
BORROWINGS	768,364,000	671,152,000	549,969,000
TRADE DATE PAYABLE	0	0	189,838,000
OTHER LIABILITIES	39,847,000	105,597,000	87,213,000
Total liabilities	11,931,194,000	11,343,237,000	10,608,714,000
COMMITMENTS AND CONTINGENCIES
SHAREHOLDERS' EQUITY:
COMMON STOCK - ($0.01 par value, authorized 200,000,000 shares; 142,586,601, 142,359,774 and 142,532,116 shares issued at June 30, 2022 and 2021 and December 31, 2021, respectively)	1,426,000	1,425,000	1,424,000
CAPITAL SURPLUS	675,653,000	676,871,000	672,288,000
RETAINED EARNINGS	1,052,453,000	981,675,000	910,171,000
TREASURY STOCK (shares at cost: 937,924, 938,629 and 936,897 at June 30, 2022 and 2021 and December 31, 2021, respectively)	(10,656,000)	(10,090,000)	(9,641,000)
DEFERRED COMPENSATION	10,656,000	10,090,000	9,641,000
ACCUMULATED OTHER COMPREHENSIVE EARNINGS (LOSS), net	(400,514,000)	99,253,000	136,486,000
Total shareholders' equity	1,329,018,000	1,759,224,000	1,720,369,000
Total liabilities and shareholders' equity	$ 13,260,212,000	$ 13,102,461,000	$ 12,329,083,000