Fair Value Of Financial Instruments (Tables)

9 Months Ended

Sep. 30, 2018

Fair Value Of Financial Instruments [Abstract]

Fair value of financial instruments [Table Text Block]

	Carrying Amount		Estimated Fair Value at September 30, 2018
(In thousands)			Level 1		Level 2		Level 3		Total
Financial Assets
Loans:
Business	$	4,966,722	$	—	$	—	$	4,865,676	$	4,865,676
Real estate - construction and land	999,691		—		—		995,910		995,910
Real estate - business	2,726,042		—		—		2,685,924		2,685,924
Real estate - personal	2,120,672		—		—		2,046,763		2,046,763
Consumer	1,967,465		—		—		1,937,606		1,937,606
Revolving home equity	375,322		—		—		368,218		368,218
Consumer credit card	788,111		—		—		731,363		731,363
Overdrafts	11,534		—		—		8,512		8,512
Total loans	13,955,559		—		—		13,639,972		13,639,972
Loans held for sale	16,890		—		16,890		—		16,890
Investment securities	8,826,249		903,880		7,778,818		143,551		8,826,249
Federal funds sold	14,375		14,375		—		—		14,375
Securities purchased under agreements to resell	700,000		—		—		677,352		677,352
Interest earning deposits with banks	334,752		334,752		—		—		334,752
Cash and due from banks	443,004		443,004		—		—		443,004
Derivative instruments	13,203		—		12,500		703		13,203
Assets held in trust for deferred compensation plan	14,384		14,384		—		—		14,384
Total	$	24,318,416	$	1,710,395	$	7,808,208	$	14,461,578	$	23,980,181
Financial Liabilities
Non-interest bearing deposits	$	6,728,605	$	6,728,605	$	—	$	—	$	6,728,605
Savings, interest checking and money market deposits	11,733,057		11,733,057		—		—		11,733,057
Time open and certificates of deposit	1,671,958		—		—		1,670,416		1,670,416
Federal funds purchased	358,940		358,940		—		—		358,940
Securities sold under agreements to repurchase	1,503,177		—		—		1,504,560		1,504,560
Other borrowings	1,534		—		—		1,534		1,534
Derivative instruments	23,012		—		22,954		58		23,012
Liabilities held in trust for deferred compensation plan	14,384		14,384		—		—		14,384
Total	$	22,034,667	$	18,834,986	$	22,954	$	3,176,568	$	22,034,508

	Carrying Amount		Estimated Fair Value at December 31, 2017
(In thousands)			Level 1		Level 2		Level 3		Total
Financial Assets
Loans:
Business	$	4,958,554	$	—	$	—	$	4,971,401	$	4,971,401
Real estate - construction and land	968,820		—		—		979,389		979,389
Real estate - business	2,697,452		—		—		2,702,598		2,702,598
Real estate - personal	2,062,787		—		—		2,060,443		2,060,443
Consumer	2,104,487		—		—		2,074,129		2,074,129
Revolving home equity	400,587		—		—		400,333		400,333
Consumer credit card	783,864		—		—		798,093		798,093
Overdrafts	7,123		—		—		7,123		7,123
Total loans	13,983,674		—		—		13,993,509		13,993,509
Loans held for sale	21,398		—		21,398		—		21,398
Investment securities	8,893,307		937,011		7,838,522		117,774		8,893,307
Federal funds sold	42,775		42,775		—		—		42,775
Securities purchased under agreements to resell	700,000		—		—		695,194		695,194
Interest earning deposits with banks	30,631		30,631		—		—		30,631
Cash and due from banks	438,439		438,439		—		—		438,439
Derivative instruments	8,349		—		7,723		626		8,349
Assets held in trust for deferred compensation plan	12,843		12,843		—		—		12,843
Total	$	24,131,416	$	1,461,699	$	7,867,643	$	14,807,103	$	24,136,445
Financial Liabilities
Non-interest bearing deposits	$	7,158,962	$	7,158,962	$	—	$	—	$	7,158,962
Savings, interest checking and money market deposits	11,499,620		11,499,620		—		—		11,499,620
Time open and certificates of deposit	1,766,864		—		—		1,768,780		1,768,780
Federal funds purchased	202,370		202,370		—		—		202,370
Securities sold under agreements to repurchase	1,304,768		—		—		1,305,375		1,305,375
Other borrowings	1,758		—		—		1,758		1,758
Derivative instruments	8,074		—		7,951		123		8,074
Liabilities held in trust for deferred compensation plan	12,843		12,843		—		—		12,843
Total	$	21,955,259	$	18,873,795	$	7,951	$	3,076,036	$	21,957,782