CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Operating activities
Net income	$ 12,998	$ 7,826
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization	2,718	2,154
Provision for loan and lease losses	15,000	9,507
Net amortization of investment securities discounts/premiums	2,615	748
Stock-based compensation expense	1,558	1,253
Loans originated for resale	(110,117)	(233)
Sale of loans originated for resale	101,721	237
Gain on sales of loans originated for resale	(7,926)	(4)
Deferred income tax expense		2
Loss (gain) on sales of fixed assets	1	(27)
Other than temporary impairment on securities held-to-maturity	20	126
Losses on sale and write downs of other real estate owned	1,066	1,872
Gain on sales of investment securities	(743)
Increase in accrued interest receivable	(2,503)	(821)
(Decrease) increase in interest payable	(8)	4
Decrease (increase) in other assets	773	(2,784)
Increase (decrease) in other liabilities	1,445	(395)
Net cash provided by operating activities	18,618	19,465
Investing activities
Purchase of investment securities available-for-sale	(442,958)	(179,694)
Purchase of securities held-to-maturity	(50,875)
Proceeds from sale of investment securities available-for-sale	51,149
Proceeds from redemptions and prepayments of securities available-for-sale	103,091	49,048
Proceeds from sale of other real estate owned	694	2,504
Net increase in loans	(97,813)	(69,278)
Proceeds from sale of premises and equipment	79	139
Purchases of premises and equipment	(5,151)	(1,769)
Net cash used in investing activities	(441,784)	(199,050)
Financing activities
Net increase in deposits	137,436	139,746
Net increase (decrease) in securities sold under agreements to repurchase	511	(11,229)
Proceeds from issuance of common stock	1,629
Proceeds from the exercise of options	290	39
Excess tax benefit from share-based payment arrangements	(3)	(2)
Net cash provided by financing activities	139,863	128,554
Net decrease in cash and cash equivalents	(283,303)	(51,031)
Cash and cash equivalents, beginning of period	968,092	749,174
Cash and cash equivalents, end of period	684,789	698,143
Supplemental disclosure:
Interest paid	5,326	6,029
Taxes paid	8,349	4,275
Transfers of loans to other real estate owned	3,827	1,890
Transfers of loans to held for sale	$ 21,692