Consolidated Statements Of Condition - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Assets
Cash and due from banks	$ 271,454	$ 225,136
Federal funds sold and securities purchased under resale agreements	4,341	5,571
Interest bearing deposits with banks	607,782	998,437
Available-for-sale securities, at fair value	1,716,388	1,792,078
Held-to-maturity securities, at amortized cost ($878.1 million fair value at December 31, 2015)	884,826	0
Trading account securities	448	1,206
Federal Home Loan Bank and Federal Reserve Bank stock	101,581	91,582
Brokerage customer receivables	27,631	24,221
Mortgage loans held-for-sale	388,038	351,290
Loans, net of unearned income, excluding covered loans	17,118,117	14,409,398
Covered loans	148,673	226,709
Total loans	17,266,790	14,636,107
Less: Allowance for loan losses	105,400	91,705
Less: Allowance for covered loan losses	3,026	2,131
Net loans	17,158,364	14,542,271
Premises and equipment, net	592,256	555,228
Lease investments, net	63,170	426
FDIC indemnification asset	0	11,846
Accrued interest receivable and other assets	604,917	501,456
Trade date securities receivable	0	485,534
Goodwill	471,761	405,634
Other intangible assets	24,209	18,811
Total assets	22,917,166	20,010,727
Deposits:
Non-interest bearing	4,836,420	3,518,685
Interest bearing	13,803,214	12,763,159
Total deposits	18,639,634	16,281,844
Federal Home Loan Bank advances	859,876	733,050
Other borrowings	266,019	196,465
Subordinated notes	140,000	140,000
Junior subordinated debentures	268,566	249,493
Trade date securities payable	538	3,828
Accrued interest payable and other liabilities	390,259	336,225
Total liabilities	20,564,892	17,940,905
Preferred stock, no par value; 20,000,000 shares authorized:
Common stock, no par value; $1.00 stated value; 100,000,000 shares authorized at December 31, 2015 and 2014; 48,468,894 shares issued at December 31, 2015 and 46,881,108 shares issued at December 31, 2014	48,469	46,881
Surplus	1,190,988	1,133,955
Treasury stock, at cost, 85,615 shares issued at December 31, 2015 and 76,053 shares at December 31, 2014	(3,973)	(3,549)
Retained earnings	928,211	803,400
Accumulated other comprehensive loss	(62,708)	(37,332)
Total shareholders' equity	2,352,274	2,069,822
Total liabilities and shareholders' equity	22,917,166	20,010,727
Series C - $1,000 liquidation value; 126,287 and 126,467 shares issued and outstanding at December 31, 2015 and 2014, respectively
Preferred stock, no par value; 20,000,000 shares authorized:
Preferred stock, Series C and Series D	126,287	126,467
Series D - $25 liquidation value; 5,000,000 shares issued and outstanding at December 30, 2015 and no shares issued and outstanding at December 31, 2014
Preferred stock, no par value; 20,000,000 shares authorized:
Preferred stock, Series C and Series D	$ 125,000	$ 0