Consolidated Statements of Cash Flows (unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Operating Activities:
Net income	$ 17,271	$ 21,005
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	4,322	3,499
Loan loss provision	2,800	2,800
Net amortization of deferred loan fees	(80)	(126)
(Increase) decrease in interest income receivable	(199)	733
(Increase) decrease in deferred tax asset	(673)	183
Increase in other assets	(663)	(4,655)
Stock option compensation expense	379	435
Tax benefit decrease (increase) upon exercise of stock options	191	(4)
Increase in income taxes payable	5,482	7,386
Increase in interest expense payable	252	149
(Decrease) increase in other liabilities	(6,726)	1,771
Gain on sale of other assets	(274)	(150)
Loss on sale of premises and equipment	6
Originations of mortgage loans for resale	(90)
Proceeds from sale of mortgage loans originated for resale	92
Net gain on sale of foreclosed assets	(181)	(1,779)
Writedown of foreclosed assets	592	1,712
Net Cash Provided by Operating Activities	22,501	32,959
Investing Activities:
Net repayments of loans	72,880	95,748
Proceeds from FDIC* loss-sharing agreement	1,344	2,628
Purchases of investment securities available for sale	(175,901)	(25,418)
Proceeds from sale/maturity/calls of securities available for sale	30,166	31,317
Purchases of investment securities held to maturity	(59,677)	(151,958)
Proceeds from maturity/calls of securities held to maturity	51,876	48,123
Purchases of premises and equipment	(617)	(1,940)
Proceeds from sale of FRB/FHLB** stock	738	451
Proceeds from sale of foreclosed assets	2,611	10,277
Net Cash (Used in) Provided by Investing Activities	(76,580)	9,228
Financing Activities:
Net change in deposits	(70,450)	(716)
Net change in short-term borrowings	8,167	(9,005)
Exercise of stock options/issuance of shares	6,156	641
Tax benefit (decrease) increase upon exercise of stock options	(191)	4
Retirement of common stock including repurchases	(15,442)	(11,660)
Common stock dividends paid	(10,084)	(10,394)
Net Cash Used in Financing Activities	(81,844)	(31,130)
Net Change In Cash and Due from Banks	(135,923)	11,057
Cash and Due from Banks at Beginning of Period	491,382	530,045
Cash and Due from Banks at End of Period	355,459	541,102
Supplemental disclosure of noncash activities:
Loan collateral transferred to other real estate owned	640	1,583
Supplemental disclosure of cash flow activities:
Interest paid for the period	1,132	1,642
Income tax payments for the period	$ 126