Consolidated Statements of Cash Flows (Unaudited) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income	$ 13,383,000	$ 12,252,000
Adjustments to reconcile net income to cash provided by operating activities
Depreciation and amortization	2,671,000	2,064,000
Provision for loan losses	4,502,000	1,300,000
Deferred income tax expense	471,000	2,000
Net gain on sale of equity securities	(91,000)
Loss on write-down of investments in securities available for sale
Net loss on fixed assets	353,000	28,000
Net loss on sale of other real estate owned and foreclosed assets	184,000	198,000
Realized gain on sale leaseback transaction	(258,000)	(258,000)
Stock based compensation	677,000	760,000
Excess tax benefit related to equity award activity	(193,000)	(166,000)
Increase in cash surrender value of life insurance policies	(722,000)	(746,000)
Gain Realized on Life Insurance Policies	(1,627,000)
Change in fair value on loans held for sale	(51,000)	140,000
Net change in:
Loans held for sale	2,145,000	11,257,000
Other assets	1,991,000	11,394,000
Other liabilities	8,722,000	11,862,000
Total adjustments	1,330,000	14,111,000
Net cash provided by operating activities	14,713,000	26,363,000
Cash flows used in investing activities
Proceeds from sales of securities available for sale	673,000
Proceeds from maturities and principal repayments of securities available for sale	11,705,000	26,708,000
Purchase of securities available for sale	(766,000)	(34,725,000)
Proceeds from maturities and principal repayments of securities held to maturity	9,083,000	13,950,000
Purchase of securities held to maturity	(34,017,000)	(44,902,000)
Redemption of Federal Home Loan Bank stock		3,093,000
Investment in Low Income Housing Tax Credit	(2,561,000)	0
Purchase of life insurance policies	(93,000)	(93,000)
Proceeds from bank owned life insurance policies	478,000	0
Net (increase) decrease in loans	(93,858,000)	29,167,000
Purchase of bank premises and equipment	(2,455,000)	(1,478,000)
Proceeds from the sale of bank premises and equipment	756,000
Proceeds from the sale of other real estate owned and foreclosed assets	642,000	1,206,000
Capital improvements to other real estate owned	(444,000)	(304,000)
Net cash used in investing activities	(110,857,000)	(7,378,000)
Cash flows provided by (used in) financing activities
Net increase (decrease) in time deposits	(18,342,000)	15,141,000
Net increase (decrease) in other deposits	146,183,000	(10,408,000)
Net increase in short-term Federal Home Loan Bank borrowings		305,000
Repayments of long-term Federal Home Loan Bank borrowings	0	(9,134,000)
Increase Decrease in Customer Repurchase Agreements	(20,803,000)	(23,741,000)
Proceeds from (Repayments of) Other Debt	(5,000,000)	(7,000,000)
Proceeds from Stock Options Exercised	133,000	451,000
Restricted stock awards issued, net of awards surrendered	(472,000)	(507,000)
Excess tax benefit from stock based compensation	193,000	166,000
Tax benefit from deferred compensation distribution	128,000	100,000
Proceeds from shares issued under direct stock purchase plan	319,000	8,000
Common dividends paid	(5,237,000)
Net cash provided by (used in) financing activities	97,102,000	(34,619,000)
Net increase (decrease) in cash and cash equivalents	958,000	(15,634,000)
Cash and cash equivalents at beginning of year	216,325,000	215,474,000
Cash and cash equivalents at end of period	217,283,000	199,840,000
Supplemental schedule of noncash investing and financing activities
Transfer of loans to other real estate owned & foreclosed assets	746,000	771,000
Capital commitment relating to Low Income Housing Project investments	$ 23,278,501	$ 0