CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Operating activities:
Net income	$ 8,476	$ 7,291
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	1,936	1,840
Net OTTI recognized in earnings	64	41
Provision for loan and lease losses	664	1,515
Share based compensation expense	325	249
Deferred income tax expense	1,641	1,286
Origination of loans held for sale	(55,278)	(43,836)
Proceeds from sales of loans held for sale	63,474	56,485
Gains on sales of loans held for sale	(981)	(824)
Loss on sales of other real estate owned	334	327
Investment securities gains	(73)	(20)
Gains on sales of premises and equipment	(93)	(14)
Net (increase) decrease in accrued interest receivable	474	(323)
Net decrease in other assets	1,923	857
Net increase (decrease) in accrued expenses and other liabilities	(2,104)	10,798
Other - net	1,717	2,275
Net cash provided by operating activities	22,499	37,947
Investing activities:
Purchases of other equity securities	(620)
Purchases of investments held-to-maturity	(11,032)	(8,819)
Purchases of investments available-for-sale	(46,331)	(117,891)
Proceeds from sales of investment available-for-sale	28,519
Proceeds from maturities, calls and principal payments of investments held-to-maturity	35,920	21,639
Proceeds from maturities, calls and principal payments of investments available-for-sale	88,220	59,390
Net (increase) decrease in loans and leases	(38,396)	362
Proceeds from the sales of other real estate owned	1,110	1,669
Expenditures for premises and equipment	(1,301)	(973)
Net cash provided by (used in) investing activities	56,089	(44,623)
Financing activities:
Net increase in deposits	24,555	49,762
Net decrease in retail repurchase agreements and federal funds purchased	(70,483)	(20,727)
Repayment of advances from FHLB	(87)	(87)
Redemption of stock warrant		(4,449)
Proceeds from issuance of common stock	(225)	(6)
Tax benefits associated with shared based compensation	74
Dividends paid	(2,431)	(1,938)
Net cash provided by (used) in financing activities	(48,597)	22,555
Net increase in cash and cash equivalents	29,991	15,879
Cash and cash equivalents at beginning of period	72,314	63,117
Cash and cash equivalents at end of period	102,305	78,996
Supplemental Disclosures:
Interest payments	5,940	6,784
Income tax payments	1,356	2,210
Transfers from loans to other real estate owned	$ 1,667	$ 1,089