Fair Value Of Financial Instruments (Tables)

3 Months Ended

Mar. 31, 2023

Fair Value Of Financial Instruments [Abstract]

Fair value of financial instruments [Table Text Block]

	Carrying Amount		Estimated Fair Value at March 31, 2023
(In thousands)			Level 1		Level 2		Level 3		Total
Financial Assets
Loans:
Business	$	5,704,467	$	—	$	—	$	5,577,723	$	5,577,723
Real estate - construction and land	1,437,419		—		—		1,407,614		1,407,614
Real estate - business	3,486,543		—		—		3,383,813		3,383,813
Real estate - personal	2,952,042		—		—		2,700,721		2,700,721
Consumer	2,094,389		—		—		2,033,884		2,033,884
Revolving home equity	295,478		—		—		296,436		296,436
Consumer credit card	558,669		—		—		530,987		530,987
Overdrafts	6,515		—		—		6,372		6,372
Total loans	16,535,522		—		—		15,937,550		15,937,550
Loans held for sale	6,162		—		6,162		—		6,162
Investment securities	11,544,700		1,026,806		10,248,563		269,331		11,544,700
Federal funds sold	27,060		27,060		—		—		27,060
Securities purchased under agreements to resell	825,000		—		—		804,959		804,959
Interest earning deposits with banks	1,341,854		1,341,854		—		—		1,341,854
Cash and due from banks	351,210		351,210		—		—		351,210
Derivative instruments	100,157		—		100,036		121		100,157
Assets held in trust for deferred compensation plan	18,656		18,656		—		—		18,656
Total	$	30,750,321	$	2,765,586	$	10,354,761	$	17,011,961	$	30,132,308
Financial Liabilities
Non-interest bearing deposits	$	8,685,234	$	8,685,234	$	—	$	—	$	8,685,234
Savings, interest checking and money market deposits	14,419,741		14,419,741		—		—		14,419,741
Certificates of deposit	1,578,485		—		—		1,577,207		1,577,207
Federal funds purchased	756,470		756,470		—		—		756,470
Securities sold under agreements to repurchase	2,028,089		—		—		2,030,615		2,030,615
Other borrowings	1,506,817		2,930		3,887		1,500,000		1,506,817
Derivative instruments	43,068		—		42,920		148		43,068
Liabilities held in trust for deferred compensation plan	18,656		18,656		—		—		18,656
Total	$	29,036,560	$	23,883,031	$	46,807	$	5,107,970	$	29,037,808

	Carrying Amount		Estimated Fair Value at December 31, 2022
(In thousands)			Level 1		Level 2		Level 3		Total
Financial Assets
Loans:
Business	$	5,661,725	$	—	$	—	$	5,506,128	$	5,506,128
Real estate - construction and land	1,361,095		—		—		1,347,328		1,347,328
Real estate - business	3,406,981		—		—		3,289,655		3,289,655
Real estate - personal	2,918,078		—		—		2,654,423		2,654,423
Consumer	2,059,088		—		—		1,999,788		1,999,788
Revolving home equity	297,207		—		—		295,005		295,005
Consumer credit card	584,000		—		—		538,268		538,268
Overdrafts	14,957		—		—		14,666		14,666
Total loans	16,303,131		—		—		15,645,261		15,645,261
Loans held for sale	4,964		—		4,964		—		4,964
Investment securities	12,511,649		1,041,616		11,244,592		225,441		12,511,649
Federal funds sold	49,505		49,505		—		—		49,505
Securities purchased under agreements to resell	825,000		—		—		795,574		795,574
Interest earning deposits with banks	389,140		389,140		—		—		389,140
Cash and due from banks	452,496		452,496		—		—		452,496
Derivative instruments	60,492		—		60,458		34		60,492
Assets held in trust for deferred compensation plan	17,856		17,856		—		—		17,856
Total	$	30,614,233	$	1,950,613	$	11,310,014	$	16,666,310	$	29,926,937
Financial Liabilities
Non-interest bearing deposits	$	10,066,356	$	10,066,356	$	—	$	—	$	10,066,356
Savings, interest checking and money market deposits	15,126,981		15,126,981		—		—		15,126,981
Certificates of deposit	994,103		—		—		982,613		982,613
Federal funds purchased	159,860		159,860		—		—		159,860
Securities sold under agreements to repurchase	2,681,874		—		—		2,684,471		2,684,471
Other borrowings	8,831		—		8,831		—		8,831
Derivative instruments	54,984		—		54,865		119		54,984
Liabilities held in trust for deferred compensation plan	17,856		17,856		—		—		17,856
Total	$	29,110,845	$	25,371,053	$	63,696	$	3,667,203	$	29,101,952