CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Operating activities
Net income	$ 16,994	$ 17,207
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan and lease losses	16,209	26,663
Provision for depreciation and amortization	3,601	2,837
Stock-based compensation expense	752	708
Pension income	(143)	(350)
Net amortization of premiums/accretion of discounts on investment securities	2,240	832
Originations of loans held for sale	(48,278)	(33,691)
Net gains from sales of loans held for sale	(940)	(989)
Proceeds from sales of loans held for sale	52,410	57,160
Deferred income taxes	(1,253)	314
Increase in interest receivable	(196)	(303)
Decrease (increase) in cash surrender value of life insurance	2,498	(302)
Increase in prepaid expenses	(382)	(339)
Decrease in indemnification asset	16,612	15,289
Increase (decrease) in accrued expenses	1,985	(14,995)
Decrease in interest payable	(543)	(54)
Other	5,223	9,873
Net cash provided by operating activities	66,789	79,860
Investing activities
Proceeds from calls, paydowns and maturities of securities available-for-sale	75,468	53,231
Purchases of securities available-for-sale	(291,496)	(160,933)
Proceeds from calls, paydowns and maturities of securities held-to-maturity	8,151	626
Net decrease (increase) in interest-bearing deposits with other banks	351,297	(210,971)
Net (increase) decrease in loans and leases, excluding covered loans	(6,372)	31,113
Net decrease in covered assets	51,622	121,382
Proceeds from disposal of other real estate owned	6,309	11,949
Purchases of premises and equipment	(6,782)	(3,096)
Net cash provided by (used in) investing activities	188,197	(156,699)
Financing activities
Net (decrease) increase in total deposits	(241,925)	71,001
Net (decrease) increase in short-term borrowings	(20,812)	28,131
Payments on long-term borrowings	(792)	(25,897)
Cash dividends paid on common stock	(15,624)	(5,783)
Proceeds from exercise of stock options	180	29
Excess tax benefit on share-based compensation	283	86
Net cash (used in) provided by financing activities	(278,690)	67,567
Cash and due from banks:
Net decrease in cash and due from banks	(23,704)	(9,272)
Cash and due from banks at beginning of period	149,653	105,981
Cash and due from banks at end of period	$ 125,949	$ 96,709