Consolidated Statements of Cash Flows (Unaudited) (USD $)	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income	$ 28,129,000	$ 25,010,000
Adjustments to reconcile net income to cash provided by operating activities
Depreciation and amortization	5,744,000	4,152,000
Provision for loan losses	6,752,000	4,400,000
Deferred income tax expense	563,000	5,000
Net (gain) loss on sale of equity securities	(71,000)	4,000
Loss on write-down of investments in securities available for sale
Net loss on fixed assets	390,000	28,000
Loss on termination of derivatives	1,122,000	0
Net loss on sale of other real estate owned and foreclosed assets	232,000	127,000
Realized gain on sale leaseback transaction	(517,000)	(517,000)
Stock based compensation	1,496,000	1,389,000
Excess tax benefit related to equity award activity	(449,000)	(312,000)
Increase in cash surrender value of life insurance policies	(1,443,000)	(1,531,000)
Gain Realized on Life Insurance Policies	(1,964,000)
Change in fair value on loans held for sale	(225,000)	1,335,000
Net change in:
Loans held for sale	(7,018,000)	14,355,000
Other assets	1,981,000	39,152,000
Other liabilities	4,154,000	14,885,000
Total adjustments	2,439,000	47,702,000
Net cash provided by operating activities	30,568,000	72,712,000
Cash flows used in investing activities
Proceeds from sales of securities available for sale	673,000	169,000
Proceeds from maturities and principal repayments of securities available for sale	23,510,000	50,709,000
Purchase of securities available for sale	(868,000)	(34,878,000)
Proceeds from Maturities, Repayments and Calls of Trading Securities Held-for-investment	20,216,000	27,535,000
Purchase of securities held to maturity	(43,493,000)	(74,834,000)
Redemption of Federal Home Loan Bank stock	2,576,000	3,093,000
Investment in Low Income Housing Tax Credit	(3,748,000)
Purchase of life insurance policies	(101,000)	(101,000)
Proceeds from bank owned life insurance policies	5,735,000
Net increase in loans	(177,486,000)	(15,713,000)
Purchase of bank premises and equipment	(3,915,000)	(4,221,000)
Proceeds from the sale of bank premises and equipment	759,000
Payments on early termination of hedging relationship	1,122,000
Proceeds from the sale of other real estate owned and foreclosed assets	2,810,000	5,237,000
Capital improvements to other real estate owned	(875,000)	(1,463,000)
Net cash used in investing activities	(175,329,000)	(44,467,000)
Cash flows provided by financing activities
Net decrease in time deposits	(40,770,000)	(43,154,000)
Net increase in other deposits	352,513,000	172,940,000
Net proceeds from (repayments of) short-term Federal Home Loan Bank borrowings	(75,000,000)	305,000
Repayments of long-term Federal Home Loan Bank borrowings	(5,000,000)	(9,134,000)
Increase Decrease in Customer Repurchase Agreements	(17,522,000)	(11,533,000)
Proceeds from (Repayments of) Other Debt	(5,000,000)	(12,000,000)
Proceeds from Stock Options Exercised	468,000	744,000
Restricted stock awards issued, net of awards surrendered	(642,000)	(668,000)
Excess tax benefit from stock based compensation	449,000	312,000
Tax benefit from deferred compensation distribution	128,000	100,000
Proceeds from shares issued under direct stock purchase plan	643,000	339,000
Common dividends paid	(10,967,000)	(5,032,000)
Net cash provided by financing activities	199,300,000	93,219,000
Net increase in cash and cash equivalents	54,539,000	121,464,000
Cash and cash equivalents at beginning of year	216,325,000	215,474,000
Cash and cash equivalents at end of period	270,864,000	336,938,000
Supplemental schedule of noncash investing and financing activities
Transfer of loans to other real estate owned & foreclosed assets	4,257,000	1,138,000
Capital commitment relating to Low Income Housing Project investments	$ 22,091,000	$ 0