Consolidated Statements of Condition - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Assets
Cash and cash equivalents	$ 290,575	$ 269,198
Investment securities:
Held to maturity (Market value of $2,400 on September 30, 2017 and $2,400 on December 31, 2016)	2,400	2,400
Available-for-sale (Amortized cost of $4,290,577 on September 30, 2017 and $4,218,841 on December 31, 2016)	4,280,188	4,177,349
Total investment securities	4,282,588	4,179,749
Loans	6,202,264	5,964,688
Less allowance for probable loan losses	(67,852)	(64,661)
Net loans	6,134,412	5,900,027
Bank premises and equipment, net	516,786	527,583
Accrued interest receivable	32,278	32,172
Other investments	555,067	517,162
Identified intangible assets, net		25
Goodwill	282,532	282,532
Other assets	79,413	95,593
Total assets	12,173,651	11,804,041
Deposits:
Demand - non-interest bearing	3,244,829	3,158,051
Savings and interest bearing demand	3,253,382	3,203,728
Time	2,115,330	2,248,310
Total deposits	8,613,541	8,610,089
Securities sold under repurchase agreements	378,033	504,985
Other borrowed funds	1,067,500	733,375
Junior subordinated deferrable interest debentures	160,416	160,416
Other liabilities	138,977	70,509
Total liabilities	10,358,467	10,079,374
Shareholders' equity:
Common shares of $1.00 par value. Authorized 275,000,000 shares; issued 96,003,077 shares on September 30, 2017 and 95,910,143 shares on December 31, 2016	96,003	95,910
Surplus	171,358	169,567
Retained earnings	1,846,570	1,777,963
Accumulated other comprehensive loss (including $0 on September 30, 2017 and $(3,287) on December 31, 2016 of comprehensive loss related to other-than-temporary impairment for non-credit related issues)	(6,539)	(26,697)
Total shareholders' equity before treasury stock	2,107,392	2,016,743
Less cost of shares in treasury, 29,938,170 shares on September 30, 2017 and 29,934,675 on December 31, 2016	(292,208)	(292,076)
Total shareholders' equity	1,815,184	1,724,667
Total liabilities and shareholders' equity	$ 12,173,651	$ 11,804,041