Consolidated Statements of Cash Flows (Unaudited) (USD $)	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
OPERATING ACTIVITIES
Net income	$ 19,445,000	$ 19,651,000
Items not requiring (providing) cash:
Depreciation and amortization	4,416,000	4,116,000
Provision for loan losses	3,034,000	2,846,000
Net accretion of investment securities and assets not covered by FDIC loss share	(389,000)	(112,000)
Stock-based compensation expense	1,039,000	1,065,000
Net accretion on assets covered by FDIC loss share	(4,553,000)	(1,912,000)
Gain on FDIC-assisted transactions		(1,120,000)
Deferred income taxes	(2,274,000)	86,000
Loss on sale of investments	193,000
Bank owned life insurance income	(974,000)	(1,078,000)
Changes in:
Interest receivable	(1,078,000)	(127,000)
Mortgage loans held for sale	14,762,000	(1,004,000)
Assets held in trading accounts	(2,520,000)	539,000
Other assets	1,594,000	(2,143,000)
Accrued expenses and other liabilities	(1,680,000)	5,750,000
Income taxes payable	(462,000)	(2,575,000)
Net cash provided by operating activities	30,553,000	23,982,000
INVESTING ACTIVITIES
Net originations of loans	(97,444,000)	(52,392,000)
Net collections of loans covered by FDIC loss share	68,674,000	51,922,000
Purchases of premises and equipment, net	(3,516,000)	(1,988,000)
Proceeds from sale of foreclosed assets held for sale	12,943,000	5,296,000
Proceeds from sale of foreclosed assets held for sale, covered by FDIC loss share	11,684,000	10,000,000
Proceeds from sale of available-for-sale securities	16,029,000	813,000
Proceeds from maturities of available-for-sale securities	53,144,000	236,921,000
Purchases of available-for-sale securities	(60,848,000)	(246,929,000)
Proceeds from maturities of held-to-maturity securities	113,289,000	512,920,000
Purchases of held-to-maturity securities	(199,201,000)	(497,955,000)
Purchase of bank owned life insurance	(7,000,000)	(25,000)
Net cash proceeds received in FDIC-assisted transactions		44,015,000
Cash received on FDIC loss share	11,621,000	12,553,000
Net cash (used in) provided by investing activities	(80,625,000)	75,151,000
FINANCING ACTIVITIES
Net change in deposits	(35,365,000)	(83,655,000)
Dividends paid	(10,304,000)	(10,172,000)
Net change in other borrowed funds	(13,454,000)	(1,318,000)
Net change in federal funds purchased and securities sold under agreements to repurchase	(41,767,000)	(71,393,000)
Net shares issued under stock compensation plans	498,000	324,000
Repurchase of common stock	(10,848,000)	(14,674,000)
Net cash used in financing activities	(111,240,000)	(180,888,000)
DECREASE IN CASH AND CASH EQUIVALENTS	(161,312,000)	(81,755,000)
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	537,797,000	570,206,000
CASH AND CASH EQUIVALENTS, END OF PERIOD	$ 376,485,000	$ 488,451,000