Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 22,108	$ 26,779
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	4,525	3,533
Provision for loan and lease losses	2,499	5,354
Net amortization of premium on securities	15,279	9,576
Securities gains, net	(5,494)	(8,894)
Increase in trading account securities	(576)	(46)
Impairment loss on securities	0	981
Stock based compensation	1,546	1,184
Loss on sale of OREO and other repossessed property	2,102	2,683
Loans originated for sale	(891,049)	(625,194)
Proceeds on sales of loans held for sale	917,668	626,629
Net gains on sales of loans held for sale	(18,995)	(21,191)
Increase in accrued interest receivable	(839)	(661)
Decrease in prepaid expenses	8,260	2,572
Increase (decrease) in accrued interest payable	25	(1,305)
Valuation adjustment on mortgage servicing rights	(496)	181
Other, net	(10,217)	(3,883)
NET CASH PROVIDED BY OPERATING ACTIVITIES	46,346	18,298
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchase of time deposits in other financial institutions	(3,605)	0
Proceeds from the sale of securities available for sale	217,139	341,151
Proceeds from the maturity of and principal paydowns on securities available for sale	135,904	161,109
Proceeds from the maturity of and principal paydowns on securities held to maturity	514	764
Purchase of securities available for sale	(481,797)	(517,773)
Net increase in loans and leases	(24,707)	(159,895)
Purchase of bank owned life insurance policies	0	(4,571)
Capital expenditures	(7,020)	(7,776)
Proceeds on sale of OREO and other repossessed assets	10,150	18,585
NET CASH USED BY INVESTING ACTIVITIES	(153,422)	(168,406)
CASH FLOWS FROM FINANCING ACTIVITIES:
Net increase in demand deposits and savings accounts	30,076	118,226
Net (increase) decrease in time deposit accounts	(34,602)	6,568
Net (increase) decrease in short-term borrowings	114,555	(20,596)
Proceeds from other borrowings	160	10,695
Repayments of other borrowings	(52,853)	(5,972)
Purchase of noncontrolling interest	(2,798)	0
Purchase of treasury stock	(860)	(1,222)
Proceeds from issuance of common stock	1,398	667
Excess tax benefits on exercised stock options	34	76
Dividends paid	(3,991)	(5,337)
NET CASH PROVIDED BY FINANCING ACTIVITIES	51,119	103,105
Net decrease in cash and cash equivalents	(55,957)	(47,003)
Cash and cash equivalents at beginning of year	168,054	129,834
CASH AND CASH EQUIVALENTS AT END OF PERIOD	112,097	82,831
Supplemental disclosures:
Cash paid for income/franchise taxes	3,905	4,090
Cash paid for interest	17,871	20,284
Loans transferred to OREO	10,710	14,562
Purchases of securities available for sale, accrued, not paid	$ 4,490	$ 46,338