Consolidated Statements Of Financial Condition - USD ($) $ in Thousands		Mar. 31, 2017	Dec. 31, 2016
Assets
Cash and due from banks		$ 166,012	$ 161,168
Federal funds sold and interest-bearing deposits in banks		335,943	587,563
Loans held-for-sale		42,276	103,284
Securities available-for-sale, at fair value (pledged as collateral to creditors: $84.9 million - 2017; $86.6 million - 2016)		2,112,165	2,013,525
Securities held-to-maturity, at amortized cost (fair value: $1.8 billion - 2017; $1.7 billion - 2016)		1,801,973	1,738,123
Federal Home Loan Bank (FHLB) stock		38,163	54,163
Loans - excluding covered assets, net of unearned fees		15,591,656	15,056,241
Allowance for loan losses		(194,615)	(185,765)
Loans, net of allowance for loan losses and unearned fees		15,397,041	14,870,476
Covered assets		21,181	22,063
Allowance for covered loan losses		(4,931)	(4,766)
Covered assets, net of allowance for covered loan losses		16,250	17,297
Other real estate owned, excluding covered assets		8,888	10,203
Premises, furniture, and equipment, net		45,050	46,967
Accrued interest receivable		57,316	57,986
Investment in bank owned life insurance		58,449	58,115
Goodwill		94,041	94,041
Other intangible assets		748	1,269
Derivative assets	[1]	21,511	27,965
Other assets		220,392	211,628
Total assets		20,416,218	20,053,773
Deposits:
Noninterest-bearing		5,258,941	5,196,587
Interest-bearing		11,449,774	10,868,642
Total deposits		16,708,715	16,065,229
Short-term borrowings		1,195,318	1,544,746
Long-term debt		338,335	338,310
Accrued interest payable		9,590	9,063
Derivative liabilities	[1]	15,420	18,122
Other liabilities		153,849	158,628
Total liabilities		18,421,227	18,134,098
Equity
Common stock (no par value, $1 stated value; authorized shares: 174 million; issued and outstanding shares: 80,023,549 - 2017 and 79,849,213 - 2016)		79,765	79,313
Additional paid-in capital		1,117,982	1,101,946
Retained earnings		793,927	736,798
Accumulated other comprehensive income, net of tax		3,317	1,618
Total equity		1,994,991	1,919,675
Total liabilities and equity		$ 20,416,218	$ 20,053,773

[1] All derivative contracts are over-the-counter contracts.