Condensed 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	$ 10,553	$ 11,051
Adjustment to reconcile net income to net cash provided by operating activities:
Provision for credit losses	4,497	3,787
Deferred tax expense	2,778	671
Depreciation and amortization	2,397	1,520
Net (gains) losses on securities and other assets	(1,081)	567
Net amortization of premiums and discounts on securities	552	287
Net accretion of premiums and discounts on long-term debt	(29)	(28)
Income from increase in cash surrender value of bank owned life insurance	(1,428)	(1,445)
(Increase) decrease in interest receivable	(258)	352
Decrease in interest payable	(826)	(1,177)
Increase in income taxes payable	1,008	9,569
Other-net	(5,342)	(5,439)
Net cash provided by operating activities	12,821	19,715
Transactions with securities available for sale:
Proceeds from sales	42	0
Proceeds from maturities and redemptions	75,603	149,201
Purchases	(204,505)	(212,061)
Purchases of FHLB stock	(2,886)	0
Proceeds from the redemption of FHLB stock	2,756	1,990
Proceeds from bank owned life insurance	178	0
Proceeds from sale of loans	14,099	6,809
Proceeds from sales of other assets	1,334	8,135
Net increase in loans	(41,343)	(90,600)
Purchases of premises and equipment	(2,164)	(2,804)
Net cash used in investing activities	(156,886)	(139,330)
Financing Activities
Net decrease in federal funds purchased	(14,800)	(43,800)
Net (decrease) increase in other short-term borrowings	(33,327)	40,396
Net increase in deposits	153,709	129,163
Repayments of other long-term debt	(123)	(118)
Discount on dividend reinvestment plan purchases	(25)	(16)
Dividends paid	(4,976)	(3,147)
Proceeds from reissuance of treasury stock	0	210
Purchase of treasury stock	(3,604)	0
Stock option tax benefit	0	1
Net cash provided by financing activities	96,854	122,689
Net (decrease) increase in cash and cash equivalents	(47,211)	3,074
Cash and cash equivalents at January 1	102,982	78,478
Cash and cash equivalents at March 31	$ 55,771	$ 81,552