Consolidated Statements Of Cash Flows (USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 9,516,205	$ 14,310,042	$ 22,077,454
Adjustments to reconcile net income to net cash flows provided by operating activities:
Depreciation	2,149,444	2,250,653	2,247,216
(Accretion) amortization of servicing rights, premiums and discounts	(6,696,585)	(10,373,438)	928,315
Gain on sale of loans	(1,248,797)	(1,421,550)	(2,320,738)
Amortization of other intangibles	418,219	567,713	111,934
Provision for loan losses	8,370,000	6,930,000	3,705,555
Expense (Benefit) for deferred income taxes	(1,170,000)	(4,684,000)	7,405,000
Proceeds from sales of loans held for sale	56,224,575	66,009,353	120,244,292
Originations of loans held for sale	(55,365,375)	(64,983,128)	(118,815,640)
Increase in cash surrender value of life insurance	(467,458)	(471,581)	(505,093)
(Gain) loss on other real estate owned	(700,534)	(1,376,007)	377,876
Gain on disposal of premises and equipment	(26,250)	(72,109)
Net gain on acquisition			(21,474,123)
Net change in:
Accrued interest receivable and other assets	(503,139)	6,298,979	(5,990,417)
Payable for investments purchased	17,165,797
Accrued interest payable and other liabilities	727,108	(5,743,500)	1,747,089
Net Cash Flows Provided by Operating Activities	28,393,210	7,241,427	9,738,720
Activity in held to maturity securities:
Maturities, prepayments and calls	246,482,676	182,949,588	66,737,249
Purchases	(380,118,180)	(221,817,712)	(141,440,231)
Net decrease in loans	29,953,612	40,659,828	1,046,334
Purchases of premises and equipment - net	(987,490)	(2,858,680)	(1,163,882)
Proceeds from sale of other real estate owned	9,013,104	9,317,897	1,724,575
Proceeds from sales of premises and equipment	38,900	380,090
Net cash received in FDIC assisted transactions			58,550,538
Net Cash Flows Provided by (Used) in Investing Activities	(95,617,378)	8,631,011	(14,545,417)
CASH FLOWS FROM FINANCING ACTIVITIES
Net increase in deposits	52,032,610	30,463,595	65,015,680
Net change in other borrowings	(4,815,964)	3,003,948	(3,450,858)
Dividends paid		(21,371,793)	(9,617,416)
Net Cash Flows Provided by in Financing Activities	47,216,646	12,095,750	51,947,406
Net Change in Cash and Cash Equivalents	(20,007,522)	27,968,188	47,140,709
CASH AND CASH EQUIVALENTS - BEGINNING OF YEAR	128,070,730	100,102,542	52,961,833
CASH AND CASH EQUIVALENTS - END OF YEAR	108,063,208	128,070,730	100,102,542
SUPPLEMENTAL CASH FLOW DISCLOSURES
Cash paid for interest	4,692,288	5,911,953	7,561,377
Cash paid for income taxes	5,480,000	13,835,860	5,817,207
Loans receivable transferred to other real estate owned	10,256,043	8,667,614	3,776,798
Mortgage servicing rights resulting from sales of loans	389,597	395,325	892,086
Dividends accrued not paid	1,870,029
Non cash assets acquired:
Investment securities			8,755,001
Loans, net of discount			196,673,404
Other real estate owned			2,897,581
Other intangibles, net			2,103,000
Mortgage servicing assets			920,772
Other assets			1,172,786
Total noncash assets acquired			212,522,544
Liabilities assumed:
Deposits			245,289,855
Other borrowings			1,351,820
Accrued expenses and other liabilities			11,568,409
Total liabilities assumed			258,210,084
Net non-cash liabilities acquired			(45,687,540)
Cash and cash equivalents acquired			58,550,538
After-tax gain recorded on acquisition			$ 12,862,998