Fair Value Of Financial Instruments (Tables)

3 Months Ended

Mar. 31, 2022

Fair Value Of Financial Instruments [Abstract]

Fair value of financial instruments [Table Text Block]

	Carrying Amount		Estimated Fair Value at March 31, 2022
(In thousands)			Level 1		Level 2		Level 3		Total
Financial Assets
Loans:
Business	$	5,508,508	$	—	$	—	$	5,406,516	$	5,406,516
Real estate - construction and land	1,144,411		—		—		1,129,894		1,129,894
Real estate - business	3,109,668		—		—		3,059,118		3,059,118
Real estate - personal	2,820,076		—		—		2,777,860		2,777,860
Consumer	2,053,160		—		—		2,043,692		2,043,692
Revolving home equity	264,401		—		—		261,985		261,985
Consumer credit card	544,579		—		—		508,944		508,944
Overdrafts	14,211		—		—		13,985		13,985
Total loans	15,459,014		—		—		15,201,994		15,201,994
Loans held for sale	8,908		—		8,908		—		8,908
Investment securities	15,016,882		1,136,827		13,680,011		200,044		15,016,882
Securities purchased under agreements to resell	1,825,000		—		—		1,801,227		1,801,227
Interest earning deposits with banks	1,260,813		1,260,813		—		—		1,260,813
Cash and due from banks	326,549		326,549		—		—		326,549
Derivative instruments	13,130		—		12,760		370		13,130
Assets held in trust for deferred compensation plan	20,403		20,403		—		—		20,403
Total	$	33,930,699	$	2,744,592	$	13,701,679	$	17,203,635	$	33,649,906
Financial Liabilities
Non-interest bearing deposits	$	11,428,372	$	11,428,372	$	—	$	—	$	11,428,372
Savings, interest checking and money market deposits	16,751,632		16,751,632		—		—		16,751,632
Certificates of deposit	1,139,337		—		—		1,124,978		1,124,978
Federal funds purchased	17,315		17,315		—		—		17,315
Securities sold under agreements to repurchase	2,300,146		—		—		2,300,267		2,300,267
Other borrowings	8,990		—		8,990		—		8,990
Derivative instruments	18,382		—		18,233		149		18,382
Liabilities held in trust for deferred compensation plan	20,403		20,403		—		—		20,403
Total	$	31,684,577	$	28,217,722	$	27,223	$	3,425,394	$	31,670,339

	Carrying Amount		Estimated Fair Value at December 31, 2021
(In thousands)			Level 1		Level 2		Level 3		Total
Financial Assets
Loans:
Business	$	5,303,535	$	—	$	—	$	5,229,153	$	5,229,153
Real estate - construction and land	1,118,266		—		—		1,099,747		1,099,747
Real estate - business	3,058,837		—		—		3,054,481		3,054,481
Real estate - personal	2,805,401		—		—		2,809,490		2,809,490
Consumer	2,032,225		—		—		2,031,408		2,031,408
Revolving home equity	275,945		—		—		273,450		273,450
Consumer credit card	575,410		—		—		536,468		536,468
Overdrafts	6,740		—		—		6,458		6,458
Total loans	15,176,359		—		—		15,040,655		15,040,655
Loans held for sale	8,615		—		8,615		—		8,615
Investment securities	14,695,628		1,087,873		13,413,558		194,197		14,695,628
Federal funds sold	2,800		2,800		—		—		2,800
Securities purchased under agreements to resell	1,625,000		—		—		1,623,856		1,623,856
Interest earning deposits with banks	3,971,217		3,971,217		—		—		3,971,217
Cash and due from banks	305,539		305,539		—		—		305,539
Derivative instruments	41,842		—		40,994		848		41,842
Assets held in trust for deferred compensation plan	21,794		21,794		—		—		21,794
Total	$	35,848,794	$	5,389,223	$	13,463,167	$	16,859,556	$	35,711,946
Financial Liabilities
Non-interest bearing deposits	$	11,772,374	$	11,772,374	$	—	$	—	$	11,772,374
Savings, interest checking and money market deposits	16,598,085		16,598,085		—		—		16,598,085
Certificates of deposit	1,442,614		—		—		1,438,919		1,438,919
Federal funds purchased	43,385		43,385		—		—		43,385
Securities sold under agreements to repurchase	2,979,582		—		—		2,979,677		2,979,677
Other borrowings	12,514		—		12,514		—		12,514
Derivative instruments	12,101		—		11,824		277		12,101
Liabilities held in trust for deferred compensation plan	21,794		21,794		—		—		21,794
Total	$	32,882,449	$	28,435,638	$	24,338	$	4,418,873	$	32,878,849