Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	6 Months Ended		12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2011
Operating activities:
Net income	$ 15,683	$ 15,587
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	3,880	3,684
Net OTTI recognized in earnings	72	84
Provision for loan and lease losses	2,249	2,666	1,428
Share based compensation expense	740	590
Deferred income tax expense	1,192	2,444
Origination of loans held for sale	(122,996)	(93,302)
Proceeds from sales of loans held for sale	124,489	105,843
Gains on sales of loans held for sale	(1,979)	(1,474)
Loss on sales of other real estate owned	701	667
Investment securities gains	(163)	(52)
(Gains) losses on sales of premises and equipment	(88)	18
Net increase in accrued interest receivable	(558)	(518)
Net decrease in other assets	487	12,483
Net increase in accrued expenses and other liabilities	2,269	3,830
Other - net	3,850	3,914
Net cash provided by operating activities	29,828	56,464
Investing activities:
Purchases of other equity securities	(1,382)
Purchases of investments held-to-maturity	(47,916)	(28,974)
Purchases of investments available-for-sale	(73,733)	(200,238)
Proceeds from redemption of Federal Home Loan Bank of Atlanta stock.	3,224	1,007
Proceeds from sales of investment available-for-sale	28,519
Proceeds from maturities, calls and principal payments of investments held-to-maturity	61,507	30,694
Proceeds from maturities, calls and principal payments of investments available-for-sale	186,353	122,185
Net (increase) decrease in loans and leases	(245,594)	5,889
Proceeds from the sales of other real estate owned	2,402	4,057
Acquisition of business activity, net of cash acquired	(849)
Expenditures for premises and equipment	(2,946)	(2,110)
Net cash used in investing activities	(90,415)	(67,490)
Financing activities:
Net increase in deposits	195,535	107,989
Net decrease in retail repurchase agreements and federal funds purchased	(78,834)	(31,029)
Repayment of advances from FHLB	(175)	(175)
Redemption of stock warrant		(4,449)
Remittances due to the vesting of restricted stock	(136)	167
Tax benefits associated with shared based compensation	74
Dividends paid	(5,358)	(3,884)
Net cash provided by financing activities	111,106	68,619
Net increase in cash and cash equivalents	50,519	57,593
Cash and cash equivalents at beginning of period	72,314	63,117	63,117
Cash and cash equivalents at end of period	122,833	120,710	72,314
Supplemental Disclosures:
Interest payments	11,413	13,629
Income tax payments	4,086	3,600
Transfers from loans to other real estate owned	$ 3,798	$ 2,868