CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Operating activities:
Net income	$ 34,809	$ 26,673
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	6,033	5,844
Net OTTI recognized in earnings	0	95
Provision (credit) for loan and lease losses	(1,670)	2,481
Share based compensation expense	1,307	1,132
Deferred income tax expense	2,945	2,315
Origination of loans held for sale	(219,153)	(221,288)
Proceeds from sales of loans held for sale	248,907	210,085
Gains on sales of loans held for sale	(4,147)	(3,340)
Loss on sales of other real estate owned	1,072	861
Investment securities gains	(118)	(459)
Gains on sales of premises and equipment	0	(93)
Net (increase) decrease in accrued interest receivable	(72)	85
Net (increase) decrease in other assets	6,441	(1,681)
Net increase in accrued expenses and other liabilities	2,010	2,505
Other - net	3,706	7,315
Net cash provided by operating activities	82,070	32,530
Investing activities:
Purchases of other equity securities	(2,776)	(2,956)
Purchases of investments held-to-maturity	(20,666)	(132,097)
Purchases of investments available-for-sale	(161,379)	(198,123)
Net proceeds from redemption of Federal Home Loan Bank of Atlanta stock	0	4,174
Proceeds from sales of investment available-for-sale	0	28,519
Proceeds from maturities, calls and principal payments of investments held-to-maturity	9,959	103,789
Proceeds from maturities, calls and principal payments of investments available-for-sale	143,220	286,607
Net increase in loans and leases	(135,100)	(74,008)
Proceeds from the sales of other real estate owned	7,137	3,102
Acquisition of business activity, net of cash acquired	0	(849)
Expenditures for premises and equipment	(1,883)	(3,675)
Net cash used in investing activities	(161,488)	14,483
Financing activities:
Net increase in deposits	3,432	53,821
Net decrease in retail repurchase agreements and federal funds purchased	(33,752)	(85,307)
Proceeds from advances from FHLB	745,000	40,000
Repayment of advances from FHLB	(630,058)	(40,262)
Proceeds from issuance of common stock	48	(21)
Remittances due to vesting of restricted stock	0	0
Tax benefits associated with shared based compensation	0	80
Dividends paid	(11,590)	(8,371)
Net cash provided by financing activities	73,080	(40,060)
Net increase (decrease) in cash and cash equivalents	(6,338)	6,953
Cash and cash equivalents at beginning of period	86,406	72,314
Cash and cash equivalents at end of period	80,068	79,267
Supplemental Disclosures:
Interest payments	15,031	17,319
Income tax payments	12,470	8,326
Transfers from loans to other real estate owned	$ 2,353	$ 4,410