CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Operating Activities
Net income	$ 23,413	$ 34,941
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan losses	4,500	2,000
Depreciation and amortization	11,344	10,969
Deferred income tax benefit	(2,822)	(2,591)
Net increase in trading securities and other earning assets	(17,121)	(16,824)
Gains on sales of securities available for sale	(1,470)	(5,893)
(Gains) losses on sales of assets	(550)	303
Amortization of securities premiums, net of discount accretion	13,276	13,433
Originations of loans held for sale	(11,545)	(39,543)
Net gains on sales of loans held for sale	(189)	(211)
Proceeds from sales of loans held for sale	11,983	37,326
Issuance of equity awards	469	449
Equity based compensation	2,212	1,913
Changes in:
Accrued income (expense)	2,832	(761)
Accrued expenses and taxes	(28,557)	(11,956)
Other assets and liabilities, net	(25,719)	11,790
Net cash (used in) provided by operating activities	(17,944)	35,345
Investing Activities
Proceeds from maturities of securities held to maturity	4,500	7,996
Proceeds from sales of securities available for sale	77,583	333,912
Proceeds from maturities of securities available for sale	516,001	514,720
Purchases of securities held to maturity	(16,600)	(22,734)
Purchases of securities available for sale	(544,487)	(805,695)
Net increase in loans	(242,279)	(327,354)
Net (increase) decrease in fed funds sold and resell agreements	(21,968)	70,822
Net increase in interest bearing balances due from other financial institutions	(53,471)	(1,004)
Purchases of bank premises and equipment	(6,926)	(8,011)
Net cash received from acquisitions		(692)
Proceeds from sales of bank premises and equipment	1,153	808
Net cash used in investing activities	(286,494)	(237,232)
Financing Activities
Net (increase) decrease in demand and savings deposits	(1,140,073)	1,121,789
Net decrease in time deposits	(234,922)	(215,696)
Net decrease (increase) in fed funds purchased and repurchase agreements	390,518	(127,927)
Net decrease in short-term debt	(107)	(99)
Proceeds from long-term debt	1,820
Repayment of long-term debt	(1,060)	(972)
Payment of contingent consideration on acquisitions	(5,975)	(4,899)
Cash dividends paid	(10,201)	(8,526)
Net tax benefit related to equity compensation plans	1,068	332
Proceeds from exercise of stock options and sales of treasury shares	2,712	961
Purchases of treasury stock	(2,867)	(1,656)
Net cash (used in) provided by financing activities	(999,087)	763,307
(Decrease) increase in cash and due from banks	(1,303,525)	561,420
Cash and cash equivalents at beginning of period	2,582,428	1,366,394
Cash and cash equivalents at end of period	1,278,903	1,927,814
Supplemental Disclosures:
Income taxes paid	16,053	9,302
Total interest paid	$ 3,720	$ 4,608