CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Operating activities:
Net income	$ 36,554	$ 34,102	$ 23,520
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	7,847	7,488	7,686
Net OTTI recognized in earnings	109	160	512
Provision for loan and lease losses	3,649	1,428	25,908
Share based compensation expense	1,451	1,207	904
Deferred income tax expense	3,933	6,678	(480)
Origination of loans held for sale	(310,860)	(229,631)	(244,707)
Proceeds from sales of loans held for sale	305,013	230,232	237,787
Gains on sales of loans held for sale	(4,961)	(3,225)	(3,251)
Loss on sales of other real estate owned	1,595	2,078	902
Investment securities gains	(459)	(292)	(796)
(Gains) losses on sales of premises and equipment	(74)	120	(92)
Net decrease (increase) in accrued interest receivable	521	(328)	1,083
Net (increase) decrease in other assets	(2,421)	(691)	5,763
Net increase (decrease) in accrued expenses and other liabilities	6,939	12,491	(3,040)
Other - net	3,954	5,893	4,948
Net cash provided by operating activities	52,790	67,710	56,647
Investing activities:
Purchases of other equity securities	(6,780)	(2,910)	(1,297)
Purchases of investments held-to-maturity	(146,290)	(161,102)	0
Purchases of investments available-for-sale	(264,993)	(370,657)	(725,641)
Proceeds from redemption of Federal Home Loan Bank of Atlanta stock	8,002	2,048	0
Proceeds from sales of investment available-for-sale	28,519	0	123,526
Proceeds from maturities, calls and principal payments of investments held-to-maturity	108,612	84,409	31,240
Proceeds from maturities, calls and principal payments of investments available-for-sale	357,144	347,864	548,583
Net (increase) decrease in loans and leases	(140,483)	(103,994)	103,110
Proceeds from the sales of other real estate owned	4,934	8,801	7,405
Acquisition of business activity, net of cash acquired	(849)	0	0
Expenditures for premises and equipment	(4,381)	(4,003)	(3,645)
Net cash used in investing activities	(56,565)	(199,544)	83,281
Financing activities:
Net increase in deposits	86,593	106,648	(146,970)
Net (decrease) increase in retail repurchase agreements and federal funds purchased	(56,685)	47,370	7,181
Repayment of advances from FHLB	(350)	(350)	(5,826)
Proceeds from issuance of common stock	98	314	96,464
Repurchase of common stock	0	(334)	0
Redemption of preferred stock	0	0	(83,094)
Redemption of stock warrant	0	(4,449)	0
Tax benefits associated with shared based compensation	102	91	201
Dividends paid	(11,891)	(8,259)	(4,563)
Net cash provided by financing activities	17,867	141,031	(136,607)
Net increase in cash and cash equivalents	14,092	9,197	3,321
Cash and cash equivalents at beginning of period	72,314	63,117	59,796
Cash and cash equivalents at end of period	86,406	72,314	63,117
Supplemental Disclosures:
Interest payments	22,464	20,334	33,183
Income tax payments	13,266	9,704	2,181
Transfers from loans to other real estate owned	$ 4,810	$ 6,398	$ 10,336