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	$ 18,009	$ 7,649
Adjustments to reconcile net income to net cash provided by operating activities
Provision for loan losses	3,596	5,658
Depreciation and amortization of premises and equipment	2,046	1,791
Net accretion on securities	921	1,091
Amortization of intangible assets	1,310	851
Stock based compensation	1,254	1,964
Increase in surrender value of bank owned life insurance	(968)	(849)
Purchases of trading securities	(1,043)	(744)
Unrealized gains in trading securities	(132)	(100)
Deferred income tax benefit	(18)	(309)
Proceeds from sale of loans held for sale	439	15,417
Originations and purchases of loans held for sale	(1,418)	(17,307)
Net gains on sales of loans held for sale	(3)	(480)
Net security gains	(7)	(1,145)
Net gains on sales of other real estate owned	(102)	(151)
Proceeds from settlement of bank owned life insurance	573	0
Gains on bank owned life insurance settlement	(414)	0
Net decrease in other assets	7,136	915
Net increase (decrease) in other liabilities	1,156	(9,336)
Net cash provided by operating activities	32,335	4,915
Investing activities
Net cash provided by acquisitions	0	81,049
Securities available for sale:
Proceeds from maturities, calls, and principal paydowns	67,341	109,986
Proceeds from sales	0	2,607
Purchases	(70,339)	(119,749)
Securities held to maturity:
Proceeds from maturities, calls, and principal paydowns	5,107	6,940
Purchases	(5,217)	(3,131)
Proceeds from FHLB stock redemption	15,306	1,989
Net increase in loans	(78,304)	(17,791)
Net increase in Federal Reserve and FHLB stock	(9,900)	0
Purchases of premises and equipment	(1,114)	(1,006)
Proceeds from sales of other real estate owned	902	1,023
Net cash (used in) provided by investing activities	(76,218)	61,917
Financing activities
Net increase in deposits	178,674	118,194
Net (decrease) increase in short-term borrowings	(99,164)	1,326
Repayments of long-term debt	(144)	(43,757)
Proceeds from the issuance of shares to employee benefit plans and other stock plans	362	(359)
Cash dividends and payment for fractional shares	(9,207)	(6,758)
Net cash provided by financing activities	70,521	68,646
Net increase in cash and cash equivalents	26,638	135,478
Cash and cash equivalents at beginning of period	158,926	163,668
Cash and cash equivalents at end of period	185,564	299,146
Cash paid during the period for:
Interest	6,829	8,000
Income taxes paid	2,745	344
Noncash investing activities:
Loans transferred to other real estate owned	460	959
Acquisitions:
Fair value of assets acquired	0	1,503,448
Fair value of liabilities assumed	$ 0	$ 1,283,676