Ames National (ATLO) 10-K 12 Mar 15 2014 FY Annual report Financial data

Document_And_Entity_Informatio

Document And Entity Information (USD $)	12 Months Ended
	Dec. 31, 2014	Feb. 27, 2015	Jun. 30, 2014
Document and Entity Information [Abstract]
Entity Registrant Name	AMES NATIONAL CORPORATION
Document Type	10-K
Current Fiscal Year End Date	-19
Entity Common Stock, Shares Outstanding		9,310,913
Entity Public Float			$210,168,227
Amendment Flag	FALSE
Entity Central Index Key	1132651
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Accelerated Filer
Entity Well-known Seasoned Issuer	No
Document Period End Date	31-Dec-14
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	FY

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Dec. 31, 2014	Dec. 31, 2013
ASSETS
Cash and due from banks	$23,730,257	$24,270,031
Federal funds sold	6,000
Interest bearing deposits in financial institutions	31,463,382	23,628,117
Securities available-for-sale	542,502,381	580,039,080
Loans receivable, net	658,440,998	564,501,547
Loans held for sale	704,850	295,618
Bank premises and equipment, net	15,956,989	11,892,329
Accrued income receivable	7,471,023	7,437,673
Other real estate owned	8,435,885	8,861,107
Deferred income taxes	2,633,177	5,027,103
Core deposit intangible, net	1,730,231	1,029,564
Goodwill	6,732,216	5,600,749
Other assets	1,223,328	501,242
Total assets	1,301,030,717	1,233,084,160
Deposits
Demand, noninterest bearing	188,725,609	179,946,472
NOW accounts	298,581,556	299,788,852
Savings and money market	321,700,422	289,307,102
Time, $250,000 and over	36,169,601	36,839,069
Other time	206,946,069	205,921,683
Total deposits	1,052,123,257	1,011,803,178
Securities sold under agreements to repurchase and federal funds purchased	51,265,011	39,616,644
Federal Home Loan Bank (FHLB) advances	14,467,737	14,540,526
Other borrowings	23,000,000	20,000,000
Dividend payable	1,675,964	1,489,746
Accrued expenses and other liabilities	3,824,330	3,527,882
Total liabilities	1,146,356,299	1,090,977,976
STOCKHOLDERS' EQUITY
Common stock, $2 par value, authorized 18,000,000 shares; issued 9,310,913 shares as of December 31, 2014 and 9,432,915 shares as of December 31, 2013; outstanding 9,310,913 shares as of December 31, 2014 and 2013	18,621,826	18,865,830
Additional paid-in capital	20,878,728	22,651,222
Retained earnings	110,701,847	102,154,498
Accumulated other comprehensive income	4,472,017	451,132
Treasury stock, at cost: 122,002 shares as of December 31, 2013		-2,016,498
Total stockholders' equity	154,674,418	142,106,184
Total liabilities and stockholders' equity	$1,301,030,717	$1,233,084,160

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parentheticals) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Common stock, par value (in Dollars per share)	$2	$2
Common stock, authorized	18,000,000	18,000,000
Common stock, issued	9,310,913	9,432,915
Common stock, outstanding	9,310,913	9,310,913
Treasury stock, shares		122,002

Consolidated_Statements_of_Inc

Consolidated Statements of Income (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Interest income:
Loans, including fees	$27,196,859	$25,433,950	$24,761,633
Securities:
Taxable	7,104,563	5,744,321	6,058,556
Tax-exempt	6,354,147	6,864,948	6,767,545
Interest bearing deposits and federal funds sold	308,782	390,594	484,004
Total interest income	40,964,351	38,433,813	38,071,738
Interest expense:
Deposits	3,385,099	3,861,713	4,472,337
Other borrowed funds	1,162,002	1,213,050	1,279,604
Total interest expense	4,547,101	5,074,763	5,751,941
Net interest income	36,417,250	33,359,050	32,319,797
Provision for loan losses	429,140	786,390	22,277
Net interest income after provision for loan losses	35,988,110	32,572,660	32,297,520
Noninterest income:
Wealth management income	2,748,619	2,199,797	2,219,320
Service fees	1,649,169	1,580,811	1,578,672
Securities gains, net	1,110,953	1,002,920	646,755
Other-than-temporary impairment of securities available-for-sale	0	0	-259,851
Gain on sale of loans held for sale	704,051	1,200,402	1,589,122
Merchant and card fees	1,189,503	1,142,027	1,055,613
Gain on sale of premises and equipment, net	1,239,581		-86,116
Other noninterest income	610,203	591,821	605,753
Total noninterest income	9,252,079	7,717,778	7,435,384
Noninterest expense:
Salaries and employee benefits	14,129,956	13,131,556	12,465,403
Data processing	2,609,185	2,414,564	2,239,003
Occupancy expenses	1,680,351	1,471,978	1,462,898
FDIC insurance assessments	645,997	661,127	664,285
Professional fees	1,274,111	1,127,666	1,224,093
Business development	1,103,923	957,702	941,090
Other real estate owned, net	1,502,408	651,401	482,904
Core deposit intangible amortization	317,333	273,700	196,736
Other operating expenses, net	1,110,199	989,178	1,126,541
Total noninterest expense	24,373,463	21,678,872	20,802,953
Income before income taxes	20,866,726	18,611,566	18,929,951
Provision for income taxes	5,615,519	4,657,922	4,747,643
Net income	$15,251,207	$13,953,644	$14,182,308
Basic and diluted earnings per share (in Dollars per share)	$1.64	$1.50	$1.52

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Income (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Net income	$15,251,207	$13,953,644	$14,182,308
Unrealized holding gains (losses) arising during the period	7,493,309	-15,860,903	2,898,948
Less: reclassification adjustment for gains realized in net income	1,110,953	1,002,920	646,755
Plus: reclassification adjustment for impairment losses realized in net income			259,851
Other comprehensive income (loss) before tax	6,382,356	-16,863,823	2,512,044
Tax expense (benefit) related to other comprehensive income (loss)	2,361,471	-6,239,613	929,455
Other comprehensive income (loss), net of tax	4,020,885	-10,624,210	1,582,589
Comprehensive income	$19,272,092	$3,329,434	$15,764,897

Consolidated_Statements_of_Sto

Consolidated Statements of Stockholders' Equity (USD $)	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income, Net of Taxes [Member]	Treasury Stock [Member]	Total
Balance at Dec. 31, 2011	$18,865,830	$22,651,222	$85,564,078	$9,492,753	($2,016,498)	$134,557,385
Net income			14,182,308			14,182,308
Other comprehensive income (loss)				1,582,589		1,582,589
Cash dividends declared, per share			-5,586,547			-5,586,547
Balance at Dec. 31, 2012	18,865,830	22,651,222	94,159,839	11,075,342	-2,016,498	144,735,735
Net income			13,953,644			13,953,644
Other comprehensive income (loss)				-10,624,210		-10,624,210
Cash dividends declared, per share			-5,958,985			-5,958,985
Balance at Dec. 31, 2013	18,865,830	22,651,222	102,154,498	451,132	-2,016,498	142,106,184
Net income			15,251,207			15,251,207
Retirement of 122,002 shares of treasury stock	-244,004	-1,772,494			2,016,498
Other comprehensive income (loss)				4,020,885		4,020,885
Cash dividends declared, per share			-6,703,858			-6,703,858
Balance at Dec. 31, 2014	$18,621,826	$20,878,728	$110,701,847	$4,472,017		$154,674,418

Consolidated_Statements_of_Sto1

Consolidated Statements of Stockholders' Equity (Parentheticals) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Cash dividends declared	$0.72	$0.64	$0.60
Retirement of treasury stock (in Shares)	122,002

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$15,251,207	$13,953,644	$14,182,308
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan losses	429,140	786,390	22,277
Provision for off-balance sheet commitments	99,000	80,700	33,000
Amortization of securities available-for-sale, loans and deposits, net	4,038,355	6,073,347	6,265,308
Amortization of core deposit intangible asset	317,333	273,700	196,736
Depreciation	892,400	797,715	787,837
Provision (credit) for deferred income taxes	32,455	-420,050	-182,328
Securities gains, net	-1,110,953	-1,002,920	-646,755
Other-than-temporary impairment of investment securities	0	0	259,851
Impairment of other real estate owned	1,744,366	670,000	303,588
Loss (gain) on sale of other real estate owned, net	-95,036	-50,445	32,711
(Gain) loss on sale and disposal of bank premises and equipment, net	-1,239,581		86,116
Change in assets and liabilities:
(Increase) decrease in loans held for sale	-409,232	734,562	182,440
(Increase) decrease in accrued income receivable	196,982	-263,970	-191,434
Decrease in other assets	17,711	1,940,557	666,973
Increase (decrease) in accrued expenses and other liabilities	-655,991	-47,850	13,137
Net cash provided by operating activities	19,508,156	23,525,380	22,011,765
CASH FLOWS FROM INVESTING ACTIVITIES
Purchase of securities available-for-sale	-65,944,859	-164,700,784	-223,959,632
Proceeds from sale of securities available-for-sale	47,315,935	47,513,022	23,017,275
Proceeds from maturities and calls of securities available-for-sale	69,892,969	103,007,610	117,220,814
Net decrease (increase) in interest bearing deposits in financial institutions	-2,116,265	21,010,916	-10,897,627
Net (increase) in federal funds sold	-6,000
Net (increase) in loans	-49,788,756	-54,934,159	-27,018,212
Net proceeds from the sale of other real estate owned	265,694	626,596	1,242,582
Purchase of bank premises and equipment	-1,590,308	-445,785	-863,375
Proceeds from the sale of bank premises and equipment	1,746,444
Other changes in other real estate owned	-19,673
Cash acquired, net of cash paid for acquired bank offices	16,428,981		44,303,137
Net cash provided by (used in) investing activities	16,184,162	-47,922,584	-76,955,038
CASH FLOWS FROM FINANCING ACTIVITIES
Increase (decrease) in deposits	-41,474,733	7,270,255	87,495,917
Increase (decrease) in federal funds purchased and securities sold under agreements to repurchase	8,833,070	12,527,984	-14,607,925
Proceeds from FHLB and other borrowings	10,000,000	2,000,000
Payments on FHLB and other borrowings	-7,072,789	-2,070,509	-568,300
Dividends paid	-6,517,640	-5,865,866	-5,400,339
Net cash provided by (used in) financing activities	-36,232,092	13,861,864	66,919,353
Net increase (decrease) in cash and due from banks	-539,774	-10,535,340	11,976,080
CASH AND DUE FROM BANKS
Beginning	24,270,031	34,805,371	22,829,291
Ending	23,730,257	24,270,031	34,805,371
Cash payments for:
Interest	4,772,793	5,432,492	6,037,779
Income taxes	5,694,894	4,990,447	4,959,281
SUPPLEMENTAL DISCLOSURE OF NONCASH INVESTING ACTIVITIES
Transfer of loans to other real estate owned	202,409	196,433	1,951,266
Business Combination: (Asset acquired and liabilities assumed at fair value)
Interest bearing deposits in financial institutions acquired	5,719,000
Securities available-for-sale acquired	10,602,454
Loans receivable acquired	44,620,021		46,103,022
Bank premises and equipment acquired	3,864,900		864,500
Accrued interest receivable acquired	230,332		514,760
Other real estate owned acquired	1,267,720
Other tangible assets acquired	748,511
Goodwill	1,131,467		5,600,749
Core deposit intangible asset	1,018,000		1,500,000
Deposits assumed	81,962,650		98,766,558
Securities sold under repurchase agreements to repurchase assumed	2,815,297
Other liabilities assumed	$853,439		$119,610

Note_1_Summary_of_Significant_

Note 1 - Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2014
Accounting Policies [Abstract]
Significant Accounting Policies [Text Block]	Note 1. Summary of Significant Accounting Policies
	Description of business: Ames National Corporation and subsidiaries (the Company) operates in the commercial banking industry through its subsidiaries in Ames, Boone, Story City, Nevada and Marshalltown, Iowa. Loan and deposit customers are located primarily in Boone, Hancock, Polk, Marshall and Story Counties and adjacent counties in Iowa.
	Segment information: The Company uses the “management approach” for reporting information about segments in annual and interim financial statements. The “management approach” is based on the way the chief operating decision-maker organizes segments within a company for making operating decisions and assessing performance. Based on the “management approach” model, the Company has determined that its business is comprised of one operating segment: banking. The banking segment generates revenues through personal, business, agricultural and commercial lending, management of the investment securities portfolio, deposit account services and wealth management services.
	Consolidation: The consolidated financial statements include the accounts of Ames National Corporation (the Parent Company) and its wholly-owned subsidiaries, First National Bank, Ames, Iowa (FNB); State Bank & Trust Co., Nevada, Iowa (SBT); Boone Bank & Trust Co., Boone, Iowa (BBT); Reliance State Bank (RSB), Story City, Iowa; and United Bank & Trust NA, Marshalltown, Iowa (UBT) (collectively, the Banks). All significant intercompany transactions and balances have been eliminated in consolidation.
	Use of estimates: The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America (GAAP) requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Material estimates that are particularly susceptible to significant change in the near term relate to the determination of the allowance for loan losses, valuation of goodwill, other intangible assets and acquisitions and the assessment of other-than-temporary impairment for certain financial instruments.
	Cash and due from banks: For purposes of reporting cash flows, cash and due from banks include cash on hand and amounts due from banks. The Company reports net cash flows for customer loan transactions, deposit transactions and short-term borrowings with maturities of 90 days or less.
	Securities available-for-sale: The Company classifies all securities as available-for-sale. Securities available-for-sale are those securities the Company may decide to sell if needed for liquidity, asset-liability management or other reasons. Securities available-for-sale are reported at fair value, with the change in the net unrealized gains reported as other comprehensive income and as accumulated other comprehensive income, net of taxes, a separate component of stockholders’ equity.
	Gains and losses on the sale of securities are determined using the specific identification method based on amortized cost and are reflected in results of operation at the time of sale. Interest and dividend income, adjusted by amortization of purchase premium or discount over the estimated life of the security using the level yield method, is included in income as earned.
	Declines in the fair value of securities available-for-sale below their cost that are deemed to be other-than-temporary are reflected in earnings as realized losses. In estimating other-than-temporary impairment losses, management considers (1) the intent to sell the investment securities and the more likely than not requirement that the Company will be required to sell the investment securities prior to recovery (2) the length of time and the extent to which the fair value has been less than cost and (3) the financial condition and near-term prospects of the issuer. Due to potential changes in conditions, it is at least reasonably possible that changes in management’s assessment of other-than-temporary impairment will occur in the near term and that such changes could be material to the amounts reported in the Company’s financial statements.
	Loans: Loans are stated at the principal amount outstanding, net of deferred loan fees and the allowance for loan losses. Interest on loans is credited to income as earned based on the principal amount outstanding. The Banks’ policy is to discontinue the accrual of interest income on any loan 90 days or more past due unless the loans are well collateralized and in the process of collection. Income on nonaccrual loans is subsequently recognized only to the extent that cash payments are received and principal obligations are expected to be recoverable. Nonaccrual loans are returned to an accrual status when, in the opinion of management, the financial position of the borrower indicates there is no longer any reasonable doubt as to timely payment of principal or interest.
	Acquired loans: Loans acquired in a business combination are stated at the principal amount outstanding with a discount attributable at least in part to credit quality. The difference between contractual payments at acquisition and the cash flows expected to be collected is referred to as the non-accretable difference. This amount is not recognized as a yield adjustment or as a loss accrual or a valuation allowance. Any excess of cash flows expected at acquisition over the estimated fair value is referred to as the accretable yield and is recognized into interest income over the remaining life of the loans when there is reasonable expectation about the amount and timing of such cash flows. Increases in expected cash flows subsequent to the initial investment are recognized prospectively through adjustment of the yield on the loan over its remaining estimated life. Decreases in expected cash flows are recognized immediately as impairment. If the Company does not have the information necessary to reasonable estimate cash flows to be expected, it may use the cost recovery method or cash basis method of income recognition. Valuation allowance on the acquired impaired loans reflect only losses after the acquisition.
	Allowance for loan losses: The allowance for loan losses is established through a provision for loan losses and maintained at a level deemed appropriate by management to provide for known and inherent risks in the loan portfolio. The allowance is based upon an ongoing review of past loan loss experience, current economic conditions, the underlying collateral value securing the loans and other adverse situations that may affect the borrower’s ability to repay. Loans which are deemed to be uncollectible are charged-off and deducted from the allowance. Recoveries on loans charged-off are added to the allowance. This evaluation is inherently subjective and requires estimates that are susceptible to significant revisions as more information becomes available. Due to potential changes in conditions, it is at least reasonably possible that changes in estimates will occur in the near term and that such changes could materially affect the amounts reported in the Company’s financial statements.
	The Company’s allowance for possible loan losses consists of two components (i) specific reserves based on probable losses on specific loans and (ii) a general allowance based on historical loan loss experience, general economic conditions and other qualitative risk factors both internal and external to the Company.
	The allowances established for probable losses on specific loans are based on a regular analysis and evaluation of problem loans. Loans are classified based on an internal credit risk rating process that evaluates, among other things: (i) the obligor’s ability to repay; (ii) the underlying collateral, if any; and (iii) the economic environment and industry in which the borrower operates. A loan is considered impaired when, based on current information and events, it is probable that the Company will be unable to collect the scheduled payments of principal or interest when due according to the contractual terms of the loan agreement. Factors considered by management in determining impairment include payment status, collateral value, and the probability of collecting scheduled principal and interest payments when due. Smaller balance homogeneous loans are evaluated for impairment in total. Such loans include residential first mortgage loans secured by one-to-four family residences, residential construction loans, and automobile loans. Commercial and agricultural loans and mortgage loans secured by other properties are evaluated individually for impairment when analysis of borrower operating results and financial condition indicates that underlying cash flows of the borrower’s business are not adequate to meet its debt service requirements. Often this is associated with a delay or shortfall in payments of 90 days or more. Nonaccrual loans are often also considered impaired. Impaired loans, or portions thereof, are charged-off when deemed uncollectible.
	The general component of the allowance for loan losses is based on historical loan loss experience, general economic conditions and other qualitative risk factors both internal and external to the Company. The general component is determined by evaluating, among other things: (i) actual charge offs; (ii) the experience, ability and effectiveness of the Company’s lending management and staff; (iii) the effectiveness of the Company’s loan policies, procedures and internal controls; (iv) changes in asset quality; (v) changes in loan portfolio volume; (vi) the composition and concentrations of credit; (vii) the impact of competition on loan structuring and pricing; (viii) the effectiveness of the internal audit loan review function; (ix) the impact of environmental risks on portfolio risks; and (x) the impact of rising interest rates on portfolio risk (collectively, the variables). Management evaluates the degree of risk that each one of these variables has on the quality of the loan portfolio on a quarterly basis. Each variable is determined to have either a high, moderate or low degree of risk. The results are then input into a “general allocation matrix” to determine an appropriate general allocation of the allowance for losses.  Also included in the general component is an allocation for groups of loans with similar risk characteristics.
	Loans held for sale: Loans held for sale are the loans the Banks have the intent to sell in the foreseeable future. They are carried at the lower of aggregate cost or fair value. Net unrealized losses, if any, are recognized through a valuation allowance by charges to income. Gains and losses on sales of loans are determined by the difference between the sale proceeds and the carrying value of the loans, recognized at settlement date and recorded as noninterest income.
	Bank premises and equipment: Premises and equipment are stated at cost less accumulated depreciation. Depreciation expense is computed using straight-line and accelerated methods over the estimated useful lives of the respective assets. Depreciable lives range from 3 to 7 years for equipment and 15 to 39 years for premises.
	Other real estate owned: Real estate properties acquired through or in lieu of foreclosure are initially recorded at the fair value less estimated selling cost at the date of foreclosure. Any write-downs based on the asset’s fair value at the date of acquisition are charged to the allowance for loan losses. Costs of significant property improvements are capitalized, whereas costs relating to holding property are expensed. The portion of interest costs relating to development of real estate is capitalized. Valuations are periodically performed by management and property held for sale is carried at the lower of the new cost basis or fair value less cost to sell and any subsequent write-downs are charged to operations. Impairment losses on property to be held and used are measured as the amount by which the carrying amount of a property exceeds its fair value less costs to sell. This evaluation is inherently subjective and requires estimates that are susceptible to significant revisions as more information becomes available. Due to potential changes in conditions, it is at least reasonably possible that changes in fair values will occur in the near term and that such changes could materially affect the amounts reported in the Company’s financial statements.
	Goodwill and core deposit intangible: Goodwill represents the excess of cost over fair value of net assets acquired. Goodwill resulting from acquisitions is not amortized, but is tested for impairment annually or whenever events change and circumstances indicate that it is more likely than not that impairment has occurred. Goodwill is tested for impairment using a two-step process that begins with an estimation of the fair value of a reporting unit. The second step, if necessary, measures the amount of impairment.
	Significant judgment is applied when goodwill is assessed for impairment. This judgment includes developing cash flow projections, selecting appropriate discount rates, identifying relevant market comparables, incorporating general economic and market conditions and selecting an appropriate control premium. At December 31, 2014, the Company management has completed the goodwill impairment analysis and determined goodwill was not impaired based on the fair value of the reporting unit.
	The only other significant intangible asset is a core deposit intangible. The core deposit intangible asset is determined to have a definite life and is amortized over the estimated useful life. The core deposit intangible asset is a customer based relationship valuation attributed to the expectation of a lower net cost of these deposits versus alternative sources of funds. The core deposit intangible asset and other long-lived assets are reviewed for impairment whenever events occur or circumstances indicate that the carrying amount may not be recoverable.
	Trust department assets: Property held for customers in fiduciary or agency capacities are not included in the accompanying consolidated balance sheets, as such items are not assets of the Banks.
	Advertising costs: Advertising costs are expensed as incurred.
	Income taxes: Deferred income taxes are provided on temporary differences between financial statement and income tax reporting. Temporary differences are differences between the amounts of assets and liabilities reported for financial statement purposes and their tax bases. Deferred tax assets are recognized for temporary differences that will be deductible in future years’ tax returns and for operating loss and tax credit carry forwards. Deferred tax assets are reduced by a valuation allowance if it is deemed more likely than not that some or all of the deferred tax assets will not be realized. Deferred tax liabilities are recognized for temporary differences that will be taxable in future years’ tax returns. Accounting for uncertainty in income taxes sets out a consistent framework to determine the appropriate level of tax reserves to maintain for uncertain tax positions. Benefits from tax positions taken or expected to be taken in a tax return are not recognized if the likelihood that the tax position would be sustained upon examination by a taxing authority is considered to be 50 percent or less. Interest and penalties are accounted for as a component of income tax expense.
	The Company files a consolidated federal income tax return, with each entity computing its taxes on a separate company basis. For state tax purposes, the Banks file franchise tax returns, while the Parent Company files a corporate income tax return.
	Comprehensive income: Accounting principles generally require that recognized revenue, expenses, gains and losses be included in net income. Certain changes in assets and liabilities, such as unrealized gains and losses on securities available-for-sale, are reported as accumulated other comprehensive income, a separate component of the stockholders’ equity section of the consolidated balance sheet, and such items, along with net income, are components of the statement of comprehensive income. Gains and losses on securities available-for-sale are reclassified to net income as the gains or losses are realized upon sale of the securities. Other-than-temporary impairment charges are reclassified to net income at the time of the charge.
	Financial instruments with off-balance-sheet risk: The Company, in the normal course of business, makes commitments to make loans which are not reflected in the consolidated financial statements. A summary of these commitments is disclosed in Note 14.
	Transfers of financial assets and participating interests: Transfers of an entire financial asset or a participating interest in an entire financial asset are accounted for as sales when control over the assets has been surrendered. Control over transferred assets is deemed to be surrendered when (1) the assets have been isolated from the Company, (2) the transferee obtains the right (free of conditions that constrain it from taking advantage of that right) to pledge or exchange the transferred assets, and (3) the Company does not maintain effective control over the transferred assets through an agreement to repurchase them before their maturity.
	The transfer of a participating interest in an entire financial asset must also meet the definition of a participating interest. A participating interest in a financial asset has all of the following characteristics: (1) from the date of the transfer, it must represent a proportionate (pro rata) ownership in the financial asset, (2) from the date of transfer, all cash flows received, except any cash flows allocated as any compensation for servicing or other services performed, must be divided proportionately among participating interest holders in the amount equal to their share ownership, (3) the rights of each participating interest holder must have the same priority, and (4) no party has the right to pledge or exchange the entire financial asset unless all participating interest holders agree to do so.
	Earnings per share: Basic earnings per share computations for the years ended December 31, 2014, 2013 and 2012, were determined by dividing net income by the weighted-average number of common shares outstanding during the years then ended. The Company had no potentially dilutive securities outstanding during the periods presented.
	The following information was used in the computation of basic earnings per share (EPS) for the years ended December 31, 2014, 2013, and 2012.
		2014		2013		2012
	Basic earning per share computation:
	Net income	$	15,251,207	$	13,953,644	$	14,182,308
	Weighted average common shares outstanding		9,310,913		9,310,913		9,310,913
	Basic EPS	$	1.64	$	1.5	$	1.52
	Reclassifications:
	Certain reclassifications have been made to the prior consolidated financial statements to conform to the current period presentation. These reclassifications had no effect on stockholders’ equity and net income of the prior periods.
	New Accounting Pronouncements:
	In January 2014, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2014-04, Receivables—Troubled Debt Restructuring by Creditors (Subtopic 310-40): Reclassification of Residential Real Estate Collateralized Consumer Mortgage Loans Upon Foreclosure. The update clarifies when an in substance foreclosure occurs, that is, when a creditor is considered to have received physical possession of residential real estate property collateralizing a consumer mortgage loan. This is the point when the consumer mortgage loan should be derecognized and the real property recognized. For public companies, this update will be effective for interim and annual periods beginning after December 31, 2014. The adoption of this guidance will not have a material impact on the Company's consolidated financial statements.
	In June 2014, the FASB issued ASU No. 2014-11, “Transfers and Servicing (Topic 860): Repurchase-to-Maturity Transactions, Repurchase Financings, and Disclosures.” The new guidance aligns the accounting for repurchase-to-maturity transactions and repurchase agreements executed as a repurchase financing with the accounting for other typical repurchase agreements. The amendments in the ASU also require expanded disclosures about the nature of collateral pledged in repurchase agreements and similar transactions accounted for as secured borrowings. The amendments in this ASU are effective for public companies for the first interim or annual period beginning after December 15, 2014. The adoption of this ASU may result in additional disclosures but is not expected to impact significantly the Company’s consolidated financial statements.

Note_2_Branch_Acquisitions

Note 2 - Branch Acquisitions	12 Months Ended
	Dec. 31, 2014
Business Combinations [Abstract]
Business Combination Disclosure [Text Block]	Note 2. Branch Acquisitions
	On August 29, 2014, FNB completed the purchase of three bank branches of First Bank located in West Des Moines and Johnston, Iowa (the “First Bank Acquisition”).  The First Bank Acquisition was consistent with the Bank’s strategy to strengthen and expand its Iowa market share.  The acquired assets and liabilities were recorded at fair value at the date of acquisition.  These branches were purchased for cash consideration of $4.1 million.  As a result of the acquisition, the Company recorded a core deposit intangible asset of $1,018,000 and goodwill of approximately $1,131,000. The results of operations for this acquisition have been included since the transaction date of August 29, 2014. The fair value of credit deteriorated purchased loans related to the First Bank Acquisition is $1,507,000. These purchase loans are included in the impaired loan category in the financial statements. Since the acquisition date, there has been no significant credit deterioration of the acquired loans.
	On April 27, 2012, RSB completed the purchase of two bank offices of Liberty Bank, F.S.B. located in Garner and Klemme, Iowa. The Liberty acquisition was consistent with the Bank’s strategy to strengthen and expand its Iowa market share. The acquired assets and liabilities were recorded at fair value at the date of acquisition. These branches were purchased for cash consideration of $5.4 million. As a result of the acquisition, the Company recorded a core deposit intangible asset of $1,500,000 and goodwill of approximately $5,601,000. The results of operations for this acquisition have been included since the transaction date of April 27, 2012. Since the acquisition date, there has been no significant credit deterioration of the acquired loans.
	The following table summarizes the fair value of the total consideration transferred as a part of the First Bank Acquisition and Liberty Acquisition as well as the fair value of identifiable assets acquired and liabilities assumed as of the effective date of the transactions.
		2014			2013		2012
	Cash consideration transferred	$	4,147,680		$	-	$	5,400,000
	Recognized amounts of identifiable assets acquired and liabilities assumed:
	Cash and due from banks	$	20,576,661		$	-	$	49,703,137
	Interest bearing deposits in financial institutions		5,719,000			-		-
	Securities available-for-sale		10,602,454			-		-
	Loans receivable		44,620,021			-		46,103,022
	Accrued interest receivable		230,332			-		514,760
	Bank premises and equipment		3,864,900			-		864,500
	Other real estate owned		1,267,720			-		-
	Core deposit intangible asset		1,018,000			-		1,500,000
	Other assets		748,511			-		-
	Deposits		(81,962,650	)		-		(98,766,558	)
	Securities sold under agreements to repurchase		(2,815,297	)		-		-
	Accrued interest payable and other liabilities		(853,439	)		-		(119,610	)
	Total identifiable net assets (liabilities)		3,016,213			-		(200,749	)
	Goodwill	$	1,131,467		$	-	$	5,600,749
	On August 29, 2014, associated with the First Bank Acquisition, the contractual balance of loans receivable acquired was $45,584,000 and the contractual balance of the deposits assumed was $81,841,000.  Loans receivable acquired include commercial real estate, 1-4 family real estate, commercial operating and consumer loans.
	The acquired loans associated with the First Bank Acquisition at contractual values as of August 29, 2014 were determined to be risk rated as follows:
	Pass	$	29,840,000
	Watch		6,659,000
	Special Mention		1,478,000
	Substandard		5,460,000
	Deteriorated credit		2,147,000
	Total loans acquired at book value	$	45,584,000
	On April 27, 2012, associated with the Liberty Acquisition, the contractual balance of loans receivable acquired was $46,972,000 and the contractual balance of the deposits assumed was $98,109,000. Loans receivable acquired include agricultural real estate, commercial real estate, 1-4 family real estate, commercial operating, agricultural operating and consumer loans determined to be pass rated.
	The core deposit intangible asset associated with the First Bank Acquisition is amortized to expense on a declining basis over a period of nine years.  The loan market valuation is accreted to income on a declining basis over a six year period.  The time deposits market valuation is amortized to expense on a declining basis over a two year period.
	The excess cash in this transaction has been utilized through reductions in federal funds purchased and other borrowings at FNB.  Going forward any excess cash will be used in the form of investment and or loan growth.
	The core deposit intangible asset, associated with the Liberty Acquisition, is amortized to expense on a declining basis over a period of seven years. The loan market valuation is accreted to income on a declining basis over a nine year period. The time deposits market valuation is amortized to expense on a declining basis over a three year period.

Note_3_Concentrations_and_Rest

Note 3 - Concentrations and Restrictions on Cash and Due from Banks and Interest Bearing Deposits in Financial Institutions	12 Months Ended
	Dec. 31, 2014
Concentrations And Restrictions On Cash And Due From Banks And Interest Bearing Deposits In Financial Institutions [Abstract]
Concentrations And Restrictions On Cash And Due From Banks And Interest Bearing Deposits In Financial Institutions [Text Block]	Note 3. Concentrations and Restrictions on Cash and Due from Banks and Interest Bearing Deposits in Financial Institutions
	The Federal Reserve Bank requires member banks to maintain certain cash and due from bank reserves. The subsidiary banks’ reserve requirements totaled approximately $6,376,000 and $6,223,000 at December 31, 2014 and 2013, respectively.
	At December 31, 2014, the Company had approximately $15,795,000 on deposit at various financial institutions. Management does not believe these balances carry a significant risk of loss but cannot provide absolute assurance that no losses would occur if these institutions were to become insolvent.

Note_4_Debt_and_Equity_Securit

Note 4 - Debt and Equity Securities	12 Months Ended
	Dec. 31, 2014
Investments, Debt and Equity Securities [Abstract]
Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block]	Note 4. Debt and Equity Securities
	The amortized cost of securities available-for-sale and their approximate fair values are summarized below:
				Gross			Gross
		Amortized		Unrealized			Unrealized			Estimated
		Cost		Gains			Losses			Fair Value
	2014:00:00
	U.S. government treasuries	$	1,431,392	$	16,050		$	-		$	1,447,442
	U.S. government agencies		86,997,445		822,410			(512,444	)		87,307,411
	U.S. government mortgage-backed securities		118,348,325		2,744,305			(107,641	)		120,984,989
	State and political subdivisions		277,328,201		5,097,127			(649,008	)		281,776,320
	Corporate bonds		47,759,479		470,427			(911,187	)		47,318,719
	Equity security, common stock		629,700		128,400			-			758,100
	Equity securities, other		2,909,400		-			-			2,909,400
		$	535,403,942	$	9,278,719		$	(2,180,280	)	$	542,502,381
				Gross			Gross
		Amortized		Unrealized			Unrealized			Estimated
		Cost		Gains			Losses			Fair Value
	2013:00:00
	U.S. government agencies	$	61,569,302	$	1,116,644		$	(1,508,155	)	$	61,177,791
	U.S. government mortgage-backed securities		153,857,058		2,846,821			(1,561,923	)		155,141,956
	State and political subdivisions		314,177,458		5,055,906			(4,009,231	)		315,224,133
	Corporate bonds		46,186,879		756,222			(2,191,401	)		44,751,700
	Equity security, common stock		629,700		211,200			-			840,900
	Equity securities, other		2,902,600		-			-			2,902,600
		$	579,322,997	$	9,986,793		$	(9,270,710	)	$	580,039,080
	The amortized cost and fair value of debt securities available-for-sale as of December 31, 2014, are shown below by contractual maturity. Expected maturities will differ from contractual maturities because issuers may have the right to call or prepay obligations with or without call or prepayment penalties.
		Amortized
		Cost		Fair Value
	Due in one year or less	$	42,443,069	$	42,818,363
	Due after one year through five years		292,052,292		297,458,655
	Due after five years through ten years		184,567,184		185,508,940
	Due after ten years		12,802,297		13,048,923
			531,864,842		538,834,881
	Equity securities		3,539,100		3,667,500
		$	535,403,942	$	542,502,381
	At December 31, 2014 and 2013, securities with a carrying value of approximately $204,035,000 and $189,116,000, respectively, were pledged as collateral on public deposits, securities sold under agreements to repurchase and for other purposes as required or permitted by law. Securities sold under agreements to repurchase are held by the Company’s safekeeping agent.
	The proceeds, gains and losses from securities available-for-sale are summarized below:
		2014		2013			2012
	Proceeds from sales of securities available-for-sale	$	47,315,935	$	47,513,022		$	23,017,275
	Gross realized gains on securities available-for-sale		1,263,600		1,152,961			648,851
	Gross realized losses on securities available-for-sale		152,647		150,041			2,096
	Tax provision applicable to net realized gains on securities available-for-sale		414,000		374,000			241,000
	No other-than-temporary impairments was recognized as a component of income for the years ended December 31, 2014 and 2013. An impairment loss was recognized as a component of noninterest income of $259,851 for the year ended December 31, 2012. The other-than-temporary impairment in 2012 related to an equity security.
	Gross unrealized losses and fair value aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position as of December 31, 2014 and 2013, are summarized as follows:
	2014:00:00	Less than 12 Months					12 Months or More						Total
		Estimated		Gross			Estimated			Gross			Estimated		Gross
		Fair		Unrealized			Fair			Unrealized			Fair		Unrealized
		Value		Losses			Value			Losses			Value		Losses
	Securities available for sale:
	U.S. government agencies	$	14,015,923	$	(64,469	)	$	17,523,097		$	(447,975	)	$	31,539,020	$	(512,444	)
	U.S. government mortgage-backed securities		6,933,655		(20,283	)		16,122,600			(87,358	)		23,056,255		(107,641	)
	State and political subdivisions		45,617,514		(251,788	)		24,880,063			(397,220	)		70,497,577		(649,008	)
	Corporate bonds		8,936,658		(72,679	)		20,724,453			(838,508	)		29,661,111		(911,187	)
		$	75,503,750	$	(409,219	)	$	79,250,213		$	(1,771,061	)	$	154,753,963	$	(2,180,280	)
	2013:00:00	Less than 12 Months					12 Months or More						Total
		Estimated		Gross			Estimated			Gross			Estimated		Gross
		Fair		Unrealized			Fair			Unrealized			Fair		Unrealized
		Value		Losses			Value			Losses			Value		Losses
	Securities available for sale:
	U.S. government agencies	$	31,806,447	$	(1,508,155	)	$	-		$	-		$	31,806,447	$	(1,508,155	)
	U.S. government mortgage-backed securities		71,326,568		(1,479,321	)		2,771,874			(82,602	)		74,098,442		(1,561,923	)
	State and political subdivisions		99,974,091		(3,028,851	)		15,438,484			(980,380	)		115,412,575		(4,009,231	)
	Corporate bonds		21,382,087		(1,150,658	)		8,798,047			(1,040,743	)		30,180,134		(2,191,401	)
		$	224,489,193	$	(7,166,985	)	$	27,008,405		$	(2,103,725	)	$	251,497,598	$	(9,270,710	)
At December 31, 2014, debt securities have unrealized losses of $2,180,280. These unrealized losses are generally due to changes in interest rates or general market conditions. In analyzing an issuer’s financial condition, management considers whether the securities are issued by the federal government or its agencies, whether downgrades by bond rating agencies have occurred, and industry analysts’ reports. Management concluded that the unrealized losses on debt securities were temporary. Due to potential changes in conditions, it is at least reasonably possible that changes in fair values and management’s assessments will occur in the near term and that such changes could materially affect the amounts reported in the Company’s financial statements.

Note_5_Loans_Receivable_and_Cr

Note 5 - Loans Receivable and Credit Disclosures	12 Months Ended
	Dec. 31, 2014
Receivables [Abstract]
Financing Receivables [Text Block]	Note 5. Loans Receivable and Credit Disclosures
	The composition of loans receivable is as follows:
		2014			2013
	Real estate - construction	$	36,015,565		$	23,927,507
	Real estate - 1 to 4 family residential		122,776,915			108,289,500
	Real estate - commercial		257,053,864			206,111,559
	Real estate - agricultural		57,449,353			53,833,997
	Commercial		92,703,021			86,822,960
	Agricultural		85,608,954			81,326,382
	Consumer and other		15,763,369			12,795,324
			667,371,041			573,107,229
	Less:
	Allowance for loan losses		(8,838,181	)		(8,571,813	)
	Deferred loan fees		(91,862	)		(33,869	)
		$	658,440,998		$	564,501,547
	Construction loans are underwritten utilizing independent appraisals, sensitivity analysis of absorption, vacancy and lease rates and financial analysis of the developers and property owners. Construction loans are generally based upon estimates of costs and value associated with the complete project. These estimates may be inaccurate. Construction loans often involve the disbursement of funds with repayment substantially dependent on the success of the ultimate project. These loans are closely monitored by on-site inspections and are considered to have higher risks than other real estate loans due to their ultimate repayment being sensitive to interest rate changes, general economic conditions and the availability of long-term financing. The Company may require guarantees on these loans. The Company’s construction loans are secured primarily by properties located in its primary market area.
	The Company originates 1-4 family real estate, consumer and other loans utilizing credit reports to supplement the underwriting process. The Company’s manual underwriting standards for 1-4 family loans are generally in accordance with FHLMC and FNMA manual underwriting guidelines.  Properties securing 1-4 four-family real estate loans are appraised by either staff appraisers or fee appraisers, both of which are independent of the loan origination function and have been approved by the Board of Directors. The loan-to-value ratios normally do not exceed 90% without credit enhancements such as mortgage insurance. The Company will lend up to 100% of the lesser of the appraised value or purchase price for conventional 1-4 family real estate loans, provided private mortgage insurance is obtained. The Company’s 1-4 family real estate loans are secured primarily by properties located in its primary market area. The underwriting standards for consumer and other loans include a determination of the applicant’s payment history on other debts and an assessment of their ability to meet existing obligations and payments on the proposed loan. To monitor and manage loan risk, policies and procedures are developed and modified, as needed by management. This activity, coupled with smaller loan amounts that are spread across many individual borrowers, minimizes risk. Additionally, market conditions are reviewed by management on a regular basis.
	Commercial and agricultural real estate loans are subject to underwriting standards and processes similar to commercial and agricultural operating loans, in addition to those unique to real estate loans. These loans are viewed primarily as cash flow loans and, secondarily, as loans secured by real estate. Commercial and agricultural real estate lending typically involves higher loan principal amounts and the repayment of these loans is generally dependent on the successful operation of the property securing the loan or the business conducted on the property securing the loan. Loan-to-value generally does not exceed 80% of the cost or value of the assets. Appraisals on properties securing these loans are performed by fee appraisers approved by the Board of Directors. Because payments on commercial and agricultural real estate loans are often dependent on the successful operation or management of the properties, repayment of such loans may be subject to adverse conditions in the real estate market or the economy. Management monitors and evaluates commercial and agricultural real estate loans based on collateral and risk rating criteria. The Company may require guarantees on these loans. The Company’s commercial and agricultural real estate loans are secured primarily by properties located in its primary market area.
	Commercial and agricultural operating loans are underwritten based on the Company’s examination of current and projected cash flows to determine the ability of the borrower to repay their obligations as agreed. This underwriting includes the evaluation of cash flows of the borrower, underlying collateral, if applicable, and the borrower’s ability to manage its business activities. The cash flows of borrowers and the collateral securing these loans may fluctuate in value after the initial evaluation. A first priority lien on the general assets of the business normally secures these types of loans. Loan-to-value limits vary and are dependent upon the nature and type of the underlying collateral and the financial strength of the borrower. Crop and hail insurance is required for most agricultural borrowers. Loans are generally guaranteed by the principal(s). The Company’s commercial and agricultural operating lending is primarily in its primary market area.
	The Company maintains an internal audit department that reviews and validates the credit risk program on a periodic basis. Results of these reviews are presented to management and the audit committee. The loan review process complements and reinforces the risk identification and assessment decisions made by lenders and credit personnel, as well as the Company’s policies and procedures.
	Summary changes in the allowance for loan losses for the years ended December 31, 2014, 2013 and 2012 are as follows:
		2014			2013			2012
	Balance, beginning	$	8,571,813		$	7,772,571		$	7,905,316
	Provision for loan losses		429,140			786,390			22,277
	Recoveries of loans charged-off		82,409			130,239			77,689
	Loans charged-off		(245,181	)		(117,387	)		(232,711	)
	Balance, ending	$	8,838,181		$	8,571,813		$	7,772,571
	Activity in the allowance for loan losses, on a disaggregated basis, for the years ended December 31, 2014, 2013 and 2012 is as follows (in thousands):
	2014:00:00				1-4 Family
		Construction			Residential			Commercial			Agricultural							Consumer
		Real Estate			Real Estate			Real Estate			Real Estate		Commercial			Agricultural		and Other			Total
	Balance, beginning	$	392		$	1,523		$	3,230		$	686	$	1,435		$	1,165	$	141		$	8,572
	Provision (credit) for loan losses		78			258			(16	)		51		(190	)		147		101			429
	Recoveries of loans charged-off		25			18			-			-		19			-		20			82
	Loans charged-off		-			(151	)		-			-		(17	)		-		(77	)		(245	)
	Balance, ending	$	495		$	1,648		$	3,214		$	737	$	1,247		$	1,312	$	185		$	8,838
	2013:00:00				1-4 Family
		Construction			Residential			Commercial			Agricultural							Consumer
		Real Estate			Real Estate			Real Estate			Real Estate		Commercial			Agricultural		and Other			Total
	Balance, beginning	$	375		$	1,433		$	2,859		$	523	$	1,461		$	945	$	177		$	7,773
	Provision (credit) for loan losses		17			117			320			163		(29	)		220		(22	)		786
	Recoveries of loans charged-off		-			54			51			-		3			-		22			130
	Loans charged-off		-			(81	)		-			-		-			-		(36	)		(117	)
	Balance, ending	$	392		$	1,523		$	3,230		$	686	$	1,435		$	1,165	$	141		$	8,572
	2012:00:00				1-4 Family
		Construction			Residential			Commercial			Agricultural							Consumer
		Real Estate			Real Estate			Real Estate			Real Estate		Commercial			Agricultural		and Other			Total
	Balance, beginning	$	793		$	1,402		$	2,859		$	501	$	1,352		$	764	$	234		$	7,905
	Provision (credit) for loan losses		(418	)		182			(4	)		22		115			181		(56	)		22
	Recoveries of loans charged-off		-			3			4			-		24			-		47			78
	Loans charged-off		-			(154	)		-			-		(30	)		-		(48	)		(232	)
	Balance, ending	$	375		$	1,433		$	2,859		$	523	$	1,461		$	945	$	177		$	7,773
	Allowance for loan losses disaggregated on the basis of the impairment analysis method as of December 31, 2014 and 2013 is as follows (in thousands):
	2014:00:00				1-4 Family
		Construction			Residential			Commercial			Agricultural							Consumer
		Real Estate			Real Estate			Real Estate			Real Estate		Commercial			Agricultural		and Other			Total
	Ending balance: Individually evaluated for impairment	$	-		$	244		$	33		$	-	$	60		$	-	$	-		$	337
	Ending balance: Collectively evaluated for impairment		495			1,404			3,181			737		1,187			1,312		185			8,501
	Ending balance	$	495		$	1,648		$	3,214		$	737	$	1,247		$	1,312	$	185		$	8,838
	2013:00:00				1-4 Family
		Construction			Residential			Commercial			Agricultural							Consumer
		Real Estate			Real Estate			Real Estate			Real Estate		Commercial			Agricultural		and Other			Total
	Ending balance: Individually evaluated for impairment	$	-		$	122		$	20		$	-	$	330		$	5	$	-		$	477
	Ending balance: Collectively evaluated for impairment		392			1,401			3,210			686		1,105			1,160		141			8,095
Ending balance	$	392		$	1,523		$	3,230		$	686	$	1,435		$	1,165	$	141		$	8,572
Loans receivable disaggregated on the basis of the impairment analysis method as of December 31, 2014 and 2013 is as follows (in thousands):
2014:00:00				1-4 Family
	Construction			Residential			Commercial			Agricultural							Consumer
	Real Estate			Real Estate			Real Estate			Real Estate		Commercial			Agricultural		and Other			Total
Ending balance: Individually evaluated for impairment	$	195		$	811		$	833		$	-	$	540		$	19	$	9		$	2,407
Ending balance: Collectively evaluated for impairment		35,821			121,966			256,221			57,449		92,163			85,590		15,754			664,964
Ending balance	$	36,016		$	122,777		$	257,054		$	57,449	$	92,703		$	85,609	$	15,763		$	667,371
2013:00:00				1-4 Family
	Construction			Residential			Commercial			Agricultural							Consumer
	Real Estate			Real Estate			Real Estate			Real Estate		Commercial			Agricultural		and Other			Total
Ending balance: Individually evaluated for impairment	$	510		$	784		$	526		$	-	$	816		$	24	$	61		$	2,721
Ending balance: Collectively evaluated for impairment		23,418			107,505			205,586			53,834		86,007			81,302		12,734			570,386
Ending balance	$	23,928		$	108,289		$	206,112		$	53,834	$	86,823		$	81,326	$	12,795		$	573,107
Credit Quality Indicators. As part of the on-going monitoring of the credit quality of the Company’s loan portfolio, management tracks certain credit quality indicators including trends related to (i) the risk ratings of construction, commercial and agricultural real estate loans and commercial and agricultural operating loans, (ii) the level of classified loans, (iii) net charge-offs, (iv) non-performing loans and (v) the general economic conditions in our market area.
The Company utilizes a risk rating matrix to assign risk ratings to each of its construction, commercial and agricultural loans. Loans are rated on a scale of 1 to 7. A description of the general characteristics of the 7 risk ratings is as follows:
Ratings 1, 2 and 3 - These ratings include loans of average to excellent credit quality borrowers. These borrowers generally have significant capital strength, moderate leverage and stable earnings and growth commensurate to their relative risk rating. These ratings are reviewed at least annually. These ratings also include performing loans less than $100,000.
Rating 4 - This rating includes loans on management’s “watch list” and is intended to be utilized for pass rated borrowers where credit quality has begun to show signs of financial weakness that now requires management’s heightened attention. This rating is reviewed at least quarterly.
Rating 5 - This rating is for “Special Mention” loans in accordance with regulatory guidelines. This rating is intended to be temporary and includes loans to borrowers whose credit quality has clearly deteriorated and are at risk of further decline unless active measures are taken to correct the situation. This rating is reviewed at least quarterly.
Rating 6 - This rating includes “Substandard” loans in accordance with regulatory guidelines, for which the accrual of interest has not been stopped. By definition under regulatory guidelines, a “Substandard” loan has defined weaknesses which make payment default or principal exposure likely, but not yet certain. Such loans are apt to be dependent upon collateral liquidation, a secondary source of repayment or an event outside of the normal course of business. This rating is reviewed at least quarterly.
Rating 7 - This rating includes “Substandard-Impaired” loans in accordance with regulatory guidelines, for which the accrual of interest has generally been stopped. This rating includes loans; (i) where interest is more than 90 days past due; (ii) not fully secured; (iii) loans where a specific valuation allowance may be necessary; (iv) unable to make contractual principle and interest payments.   This rating is reviewed at least quarterly.
The credit risk profile by internally assigned grade, on a disaggregated basis, at December 31, 2014 and 2013 is as follows:
2014:00:00	Construction			Commercial			Agricultural
	Real Estate			Real Estate			Real Estate			Commercial		Agricultural			Total
Pass	$	30,055,000		$	223,775,000		$	51,024,000		$	79,117,000	$	78,387,000		$	462,358,000
Watch		3,893,000			18,617,000			6,275,000			10,086,000		6,827,000			45,698,000
Special Mention		-			1,296,000			88,000			585,000		-			1,969,000
Substandard		1,873,000			12,532,000			62,000			2,376,000		395,000			17,238,000
Substandard-Impaired		195,000			834,000			-			539,000		-			1,568,000
	$	36,016,000		$	257,054,000		$	57,449,000		$	92,703,000	$	85,609,000		$	528,831,000
2013:00:00	Construction			Commercial			Agricultural
	Real Estate			Real Estate			Real Estate			Commercial		Agricultural			Total
Pass	$	16,887,000		$	169,659,000		$	51,486,000		$	73,073,000	$	78,476,000		$	389,581,000
Watch		3,545,000			20,267,000			2,051,000			10,717,000		1,963,000			38,543,000
Special Mention		-			798,000			-			796,000		9,000			1,603,000
Substandard		2,986,000			14,862,000			297,000			1,421,000		854,000			20,420,000
Substandard-Impaired		510,000			526,000			-			816,000		24,000			1,876,000
	$	23,928,000		$	206,112,000		$	53,834,000		$	86,823,000	$	81,326,000		$	452,023,000
The credit risk profile based on payment activity, on a disaggregated basis, at December 31, 2014 and 2013 is as follows:
2014:00:00	1-4 Family
	Residential			Consumer
	Real Estate			and Other			Total
Performing	$	121,928,000		$	15,756,000		$	137,684,000
Non-performing		849,000			7,000			856,000
	$	122,777,000		$	15,763,000		$	138,540,000
2013:00:00	1-4 Family
	Residential			Consumer
	Real Estate			and Other			Total
Performing	$	107,666,000		$	12,740,000		$	120,406,000
Non-performing		623,000			55,000			678,000
	$	108,289,000		$	12,795,000		$	121,084,000
A loan is considered impaired when, based on current information and events, it is probable that the Company will be unable to collect the scheduled payment of principal and interest when due according to the contractual terms of the loan agreement. Factors considered by management in determining impairment include payment status, collateral value, and the probability of collecting scheduled principal and interest payments when due. The Company will apply its normal loan review procedures to identify loans that should be evaluated for impairment. The following is a recap of impaired loans, on a disaggregated basis, at December 31, 2014, 2013 and 2012 and the average recorded investment and interest income recognized on these loans for the years ended December 31, 2014, 2013 and 2012:
2014:00:00				Unpaid						Average		Interest
	Recorded			Principal			Related			Recorded		Income
	Investment			Balance			Allowance			Investment		Recognized
With no specific reserve recorded:
Real estate - construction	$	195,000		$	346,000		$	-		$	408,000	$	152,000
Real estate - 1 to 4 family residential		24,000			29,000			-			188,000		12,000
Real estate - commercial		675,000			1,204,000			-			389,000		207,000
Real estate - agricultural		-			-			-			-		-
Commercial		456,000			535,000			-			218,000		-
Agricultural		19,000			19,000			-			19,000		-
Consumer and other		9,000			6,000			-			20,000		-
Total loans with no specific reserve:		1,378,000			2,139,000			-			1,242,000		371,000
With an allowance recorded:
Real estate - construction		-			-			-			-		-
Real estate - 1 to 4 family residential		787,000			903,000			244,000			380,000		-
Real estate - commercial		158,000			158,000			33,000			114,000		4,000
Real estate - agricultural		-			-			-			-		-
Commercial		84,000			84,000			60,000			432,000		78,000
Agricultural		-			-			-			3,000		-
Consumer and other		-			-			-			2,000		-
Total loans with specific reserve:		1,029,000			1,145,000			337,000			931,000		82,000
Total
Real estate - construction		195,000			346,000			-			408,000		152,000
Real estate - 1 to 4 family residential		811,000			932,000			244,000			568,000		12,000
Real estate - commercial		833,000			1,362,000			33,000			503,000		211,000
Real estate - agricultural		-			-			-			-		-
Commercial		540,000			619,000			60,000			650,000		78,000
Agricultural		19,000			19,000			-			22,000		-
Consumer and other		9,000			6,000			-			22,000		-
	$	2,407,000		$	3,284,000		$	337,000		$	2,173,000	$	453,000
2013:00:00				Unpaid						Average		Interest
	Recorded			Principal			Related			Recorded		Income
	Investment			Balance			Allowance			Investment		Recognized
With no specific reserve recorded:
Real estate - construction	$	510,000		$	510,000		$	-		$	837,000	$	25,000
Real estate - 1 to 4 family residential		483,000			483,000			-			551,000		8,000
Real estate - commercial		480,000			480,000			-			1,047,000		209,000
Real estate - agricultural		-			-			-			-		-
Commercial		43,000			43,000			-			55,000		12,000
Agricultural		19,000			19,000			-			4,000		-
Consumer and other		61,000			61,000			-			16,000		-
Total loans with no specific reserve:		1,596,000			1,596,000			-			2,510,000		254,000
With an allowance recorded:
Real estate - construction		-			-			-			250,000		93,000
Real estate - 1 to 4 family residential		301,000			301,000			122,000			396,000		-
Real estate - commercial		46,000			46,000			20,000			927,000		-
Real estate - agricultural		-			-			-			-		-
Commercial		773,000			773,000			330,000			750,000		-
Agricultural		5,000			5,000			5,000			5,000		-
Consumer and other		-			-			-			-		-
Total loans with specific reserve:		1,125,000			1,125,000			477,000			2,328,000		93,000
Total
Real estate - construction		510,000			510,000			-			1,087,000		118,000
Real estate - 1 to 4 family residential		784,000			784,000			122,000			947,000		8,000
Real estate - commercial		526,000			526,000			20,000			1,974,000		209,000
Real estate - agricultural		-			-			-			-		-
Commercial		816,000			816,000			330,000			805,000		12,000
Agricultural		24,000			24,000			5,000			9,000		-
Consumer and other		61,000			61,000			-			16,000		-
	$	2,721,000		$	2,721,000		$	477,000		$	4,838,000	$	347,000
2012:00:00				Unpaid						Average		Interest
	Recorded			Principal			Related			Recorded		Income
	Investment			Balance			Allowance			Investment		Recognized
With no specific reserve recorded:
Real estate - construction	$	1,060,000		$	1,060,000		$	-		$	1,445,000	$	4,000
Real estate - 1 to 4 family residential		655,000			655,000			-			1,245,000		14,000
Real estate - commercial		1,381,000			1,381,000			-			892,000		5,000
Real estate - agricultural		-			-			-			-		-
Commercial		80,000			80,000			-			37,000		-
Agricultural		-			-			-			-		-
Consumer and other		4,000			4,000			-			1,000		-
Total loans with no specific reserve:		3,180,000			3,180,000			-			3,620,000		23,000
With an allowance recorded:
Real estate - construction		433,000			433,000			100,000			552,000		-
Real estate - 1 to 4 family residential		466,000			466,000			110,000			483,000		-
Real estate - commercial		1,899,000			1,899,000			86,000			1,854,000		-
Real estate - agricultural		-			-			-			-		-
Commercial		630,000			630,000			400,000			610,000		-
Agricultural		6,000			6,000			6,000			2,000		-
Consumer and other		-			-			-			2,000		-
Total loans with specific reserve:		3,434,000			3,434,000			702,000			3,503,000		-
Total
Real estate - construction		1,493,000			1,493,000			100,000			1,997,000		4,000
Real estate - 1 to 4 family residential		1,121,000			1,121,000			110,000			1,728,000		14,000
Real estate - commercial		3,280,000			3,280,000			86,000			2,746,000		5,000
Real estate - agricultural		-			-			-			-		-
Commercial		710,000			710,000			400,000			647,000		-
Agricultural		6,000			6,000			6,000			2,000		-
Consumer and other		4,000			4,000			-			3,000		-
	$	6,614,000		$	6,614,000		$	702,000		$	7,123,000	$	23,000
The interest foregone on nonaccrual loans for the years ended December 31, 2014, 2013 and 2012 was approximately $136,000, $287,000 and $366,000, respectively.
Troubled Debt Restructurings. The restructuring of a loan is considered a “troubled debt restructuring” if both (i) the borrower is experiencing financial difficulties and (ii) the creditor has granted a concession. Concessions may include interest rate reductions or below market interest rates, principal forgiveness, restructuring amortization schedules and other actions intended to minimize potential losses.
Certain troubled debt restructurings are on nonaccrual status at the time of restructuring. These borrowings are typically returned to accrual status after sustained repayment performance in accordance with the restructuring agreement for a reasonable period of at least six months and management is reasonably assured of future performance. If the troubled debt restructuring meets these performance criteria and the interest rate granted at the modification is equal to or greater than the rate that the Company was willing to accept at the time of the restructuring for a new loan with comparable risk, then the loan will return to performing status.
For troubled debt restructurings that were on nonaccrual status before the modification, a specific reserve may already be recorded. In periods subsequent to modification, the Company will continue to evaluate all troubled debt restructurings for possible impairment and, as necessary recognizes impairment through the allowance. The Company had two charge offs related to TDRs for the year ended December 31, 2014 in the amount of $48,000. The Company had no charge-offs related to modifying troubled debt restructurings for the year ended December 31, 2013 and 2012.
The Company had loans meeting the definition of troubled debt restructuring (TDR) of $1,129,000 as of December 31, 2014, all of which were included as impaired and nonaccrual loans. The Company had loans meeting the definition of troubled debt restructuring (TDR) of $1,424,000 as of December 31, 2013, all of which were included as impaired loans, $1,237,000 was included as nonaccrual loans and $187,000 was included as accrual loans.
The following table sets forth information on the Company’s TDR, on a disaggregated basis, occurring in the years ended December 31:
	2014									2013
				Pre-Modification			Post-Modification					Pre-Modification			Post-Modification
				Outstanding			Outstanding					Outstanding			Outstanding
	Number of			Recorded			Recorded			Number of		Recorded			Recorded
	Contracts			Investment			Investment			Contracts		Investment			Investment
Real estate - construction		-		$	-		$	-			-	$	-		$	-
Real estate - 1 to 4 family residential		1			25,000			25,000			-		-			-
Real estate - commercial		3			384,000			384,000			-		-			-
Real estate - agricultural		-			-			-			-		-			-
Commercial		-			-			-			1		130,000			130,000
Agricultural		1			19,000			19,000			-		-			-
Consumer and other		1			6,000			6,000			1		46,000			46,000
		6		$	434,000		$	434,000			2	$	176,000		$	176,000
During the year ended December 31, 2014, the Company granted concessions to borrowers experiencing financial difficulties for six loans. A commercial real estate loan was restructured as an interest only loan for a period of time. An agricultural and consumer loans maturity date was extended one year with interest only until maturity. A 1-4 family residential loans terms were extended beyond normal terms. The interest rate was restructured on two commercial real estate loans at a below market rate.
During the year ended December 31, 2013, the Company granted concessions to borrowers experiencing financial difficulties for two loans. The commercial loan was restructured with a collateral shortfall. The consumer loan was restructured into a term loan from an overdraft.
There were no TDR loans modified during the years ended December 31, 2014 and 2013 with subsequent payment defaults. A TDR loan is considered to have payment default when it is past due 60 days or more.
There was no significant financial impact from specific reserves or from charge-offs for the TDR loans included in the previous table.
An aging analysis of the recorded investment in loans, on a disaggregated basis, as of December 31, 2014 and 2013, are as follows:
2014:00:00	30-89			90 Days											90 Days
	Days			or Greater			Total								or Greater
	Past Due			Past Due			Past Due			Current		Total			Accruing
Real estate - construction	$	64,000		$	-		$	64,000		$	35,952,000	$	36,016,000		$	-
Real estate - 1 to 4 family residential		888,000			57,000			945,000			121,832,000		122,777,000			36,000
Real estate - commercial		467,000			45,000			512,000			256,542,000		257,054,000			-
Real estate - agricultural		28,000			-			28,000			57,421,000		57,449,000			-
Commercial		264,000			84,000			348,000			92,355,000		92,703,000			-
Agricultural		-			-			-			85,609,000		85,609,000			-
Consumer and other		63,000			-			63,000			15,700,000		15,763,000			-
	$	1,774,000		$	186,000		$	1,960,000		$	665,411,000	$	667,371,000		$	36,000
2013:00:00	30-89			90 Days											90 Days
	Days			or Greater			Total								or Greater
	Past Due			Past Due			Past Due			Current		Total			Accruing
Real estate - construction	$	-		$	-		$	-		$	23,928,000	$	23,928,000		$	-
Real estate - 1 to 4 family residential		1,059,000			400,000			1,459,000			106,830,000		108,289,000			27,000
Real estate - commercial		-			46,000			46,000			206,066,000		206,112,000			-
Real estate - agricultural		-			-			-			53,834,000		53,834,000			-
Commercial		88,000			375,000			463,000			86,360,000		86,823,000			-
Agricultural		-			-			-			81,326,000		81,326,000			-
Consumer and other		35,000			-			35,000			12,760,000		12,795,000			-
	$	1,182,000		$	821,000		$	2,003,000		$	571,104,000	$	573,107,000		$	27,000
There are no other known problem loans that cause management to have serious doubts as to the ability of such borrowers to comply with the present loan repayment terms.
As of December 31, 2014, there were no material commitments to lend additional funds to customers whose loans were classified as impaired.
Loans are made in the normal course of business to certain directors and executive officers of the Company and to their affiliates. The terms of these loans, including interest rates and collateral, are similar to those prevailing for comparable transactions with others and do not involve more than a normal risk of collectability. Loan transactions with related parties were as follows:
	2014			2013
Balance, beginning of year	$	7,911,436		$	8,762,305
New loans		17,264,513			19,442,541
Repayments		(16,837,127	)		(20,920,256	)
Change in status		178,834			626,846
Balance, end of year	$	8,517,656		$	7,911,436

Note_6_Bank_Premises_and_Equip

Note 6 - Bank Premises and Equipment	12 Months Ended
	Dec. 31, 2014
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment Disclosure [Text Block]	Note 6. Bank Premises and Equipment
	The major classes of bank premises and equipment and the total accumulated depreciation are as follows:
		2014		2013
	Land	$	3,849,144	$	2,462,563
	Buildings and improvements		17,470,675		16,149,479
	Furniture and equipment		5,879,852		5,435,234
			27,199,671		24,047,276
	Less accumulated depreciation		11,242,682		12,154,947
		$	15,956,989	$	11,892,329

Note_7_Other_Real_Estate_Owned

Note 7 - Other Real Estate Owned	12 Months Ended
	Dec. 31, 2014
Disclosure Text Block [Abstract]
Real Estate Owned [Text Block]	Note 7. Other Real Estate Owned
	Changes in the other real estate owned are as follows:
		2014			2013
	Balance, beginning of year	$	8,861,107		$	9,910,825
	Transfer of loans		202,409			196,433
	Acquired		1,267,720			-
	Impairment		(1,744,366	)		(670,000	)
	Net proceeds from sale		(265,694	)		(626,596	)
	Gain on sale, net		95,036			50,445
	Other changes		19,673			-
	Balance, end of year	$	8,435,885		$	8,861,107
	The following table provides the composition of other real estate owned as of December 31:
		2014			2013
	Construction and land development	$	5,384,955		$	6,750,503
	1 to 4 family residential houses		1,269,629			1,296,227
	Commercial real estate		1,781,301			814,377
		$	8,435,885		$	8,861,107
	The Company is actively marketing the assets referred to in the table above. Management uses appraised values and adjusts for trends observed in the market and for disposition costs in determining the value of other real estate owned. The assets above are primarily located in the Des Moines, Iowa metropolitan area.

Note_8_Goodwill

Note 8 - Goodwill	12 Months Ended
	Dec. 31, 2014
Disclosure Text Block Supplement [Abstract]
Goodwill Disclosure [Text Block]	Note 8. Goodwill
	As of August 29, 2014, FNB acquired three bank branches located in West Des Moines and Johnston, Iowa, which resulted in the recognition of $1.1 million of goodwill.  Goodwill recognized in the First Bank Acquisition was primarily attributable to an expanded market share and economies of scale expected from combining the operations of the West Des Moines and Johnston, Iowa branches with FNB.
	As of April 27, 2012, RSB acquired two bank offices located in Garner and Klemme, Iowa, which resulted in the recognition of $5.6 million of goodwill. Goodwill recognized in the Liberty Acquisition was primarily attributable to an expanded market share and economies of scale expected from combining the operations of the Garner and Klemme branches with Reliance Bank.
	The goodwill is not amortized but is evaluated for impairment at least annually. For income tax purposes, goodwill is amortized over 15 years.

Note_9_Core_Deposit_Intangible

Note 9 - Core Deposit Intangible Asset	12 Months Ended
	Dec. 31, 2014
Disclosure Text Block [Abstract]
Intangible Assets Disclosure [Text Block]	Note 9. Core Deposit Intangible Asset
	In conjunction with the First Bank Acquisition, the Company recorded $1.0 million in core deposit intangible assets. In conjunction with the Liberty Acquisition, the Company recorded a $1.5 million core deposit intangible asset. The following sets forth the carrying amounts and accumulated amortization of core deposit intangible assets at December 31, 2014 and 2013:
		2014						2013
		Gross			Accumulated			Gross			Accumulated
		Amount			Amortization			Amount			Amortization
	Core deposit intangible asset	$	2,518,000		$	788,000		$	1,500,000		$	471,000
	The weighted average life of the core deposit intangible is 3 years and 5 years as of December 31, 2014 and 2013, respectively.
	The amortization expense for the core deposit intangible asset totaled $317,000, $274,000 and $197,000 for the years ended December 31, 2014, 2013 and 2012, respectively. Estimated remaining amortization expense on core deposit intangible for the years ending is as follows:
	2015	$	422,000
	2016		354,000
	2017		299,000
	2018		251,000
	2019		127,000
	After		277,000
		$	1,730,000
	The following sets for the activity related to core deposit intangible assets for the years ended December 31, 2014, 2013 and 2012:
		2014			2013			2012
	Beginning core deposit intangible, net	$	1,029,000		$	1,303,000		$	-
	Purchases		1,018,000			-			1,500,000
	Amortization		(317,000	)		(274,000	)		(197,000	)
	Ending core deposit intangible, net	$	1,730,000		$	1,029,000		$	1,303,000

Note_10_Deposits

Note 10 - Deposits	12 Months Ended
	Dec. 31, 2014
Disclosure Text Block [Abstract]
Deposit Liabilities Disclosures [Text Block]	Note 10. Deposits
	At December 31, 2014, the maturities of time deposits are as follows:
	2015	$	140,711,485
	2016		51,755,767
	2017		29,342,497
	2018		12,431,942
	2019		8,873,979
		$	243,115,670
	Interest expense on deposits is summarized as follows:
		2014		2013		2012
	NOW accounts	$	529,390	$	593,210	$	599,992
	Savings and money market		612,632		582,502		553,142
	Time deposits		2,243,077		2,686,001		3,319,203
		$	3,385,099	$	3,861,713	$	4,472,337
	Deposits held by the Company from related parties at December 31, 2014 and 2013 amounted to approximately $16,388,000 and $17,679,000, respectively.

Note_11_Borrowings

Note 11 - Borrowings	12 Months Ended
	Dec. 31, 2014
Debt Disclosure [Abstract]
Debt Disclosure [Text Block]	Note 11. Borrowings
	Securities sold under repurchase agreements (repurchase agreements) are short-term and are secured by securities available-for-sale.
	At December 31, 2014, FHLB advances and other borrowings consisted of the following:
				Weighted
				Average
		Amount		Interest Rate		Features
	FHLB advances maturing in:
	2016	$	1,000,000		0.75%
	2017		1,000,000		1.08%
	2018		11,500,000		2.94%	Includes $4,500,000 callable in February 2015; $7,000,000 callable in March 2015
	After 2018		967,737		3.50%	15 year amortizing and puttable in 2015
	Total FHLB advances	$	14,467,737		2.69%
	Other borrowings maturing in:
	2018	$	18,000,000		3.45%	$13,000,000 term repurchase agreements callable quarterly in 2015 and thereafter; $5,000,000 financing agreements with maturitiy date of January 2018
	2022		5,000,000		4.12%	$5,000,000 financing agreements with a maturity date of January 2022
	Total other borrowings	$	23,000,000		3.59%
	Total FHLB and other borrowings	$	37,467,737		3.24%
	Borrowed funds at December 31, 2013 included FHLB advances and other borrowings of $34,540,526. Such borrowings carried a weighted-average interest rate of 3.10% with maturities ranging from 2014 through 2025. At December 31, 2013, other borrowings consist of term repurchase agreements.
	At December 31, 2014, other borrowings consist of term repurchase agreements and financing agreements as a result of sold loans that do not qualify for sale accounting. These financing agreements are recorded as financing transactions as effective control over the transferred loans maintained by FNB. The dollar amount of the loans underlying the sale agreement continues to be carried in our loan portfolio and the transfer is reported as a secured borrowing with these loans pledged as collateral. FHLB advances are collateralized by certain 1-4 family residential real estate loans, multifamily real estate loans, commercial real estate loans and agricultural real estate loans. The term repurchase agreements are collateralized with U.S. government agencies and mortgage-backed securities with a carrying and fair value of $13,921,000 at December 31, 2014. The Banks had available borrowing capacity with the FHLB of Des Moines, Iowa of $137,399,000 at December 31, 2014.

Note_12_Employee_Benefit_Plans

Note 12 - Employee Benefit Plans	12 Months Ended
	Dec. 31, 2014
Compensation and Retirement Disclosure [Abstract]
Pension and Other Postretirement Benefits Disclosure [Text Block]	Note 12. Employee Benefit Plans
	The Company has a qualified 401(k) profit-sharing plan. For the years ended December 31, 2014, 2013 and 2012, the Company matched employee contributions up to a maximum of 3% and also contributed an amount equal to 3% of the participating employee’s compensation. For the years ended December 31, 2014, 2013 and 2012, Company contributions to the plan were approximately $631,000, $574,000, and $548,000, respectively. The plan covers substantially all employees.

Note_13_Income_Taxes

Note 13 - Income Taxes	12 Months Ended
	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Income Tax Disclosure [Text Block]	Note 13. Income Taxes
	The components of income tax expense are as follows:
		2014			2013			2012
	Federal:
	Current	$	4,568,497		$	4,104,278		$	3,975,247
	Deferred		16,322			(392,690	)		(184,093	)
			4,584,819			3,711,588			3,791,154
	State:
	Current		1,014,567			973,694			954,724
	Deferred		16,133			(27,360	)		1,765
			1,030,700			946,334			956,489
	Income tax expense	$	5,615,519		$	4,657,922		$	4,747,643
	Total income tax expense differed from the amounts computed by applying the U.S. federal income tax rate of 35% to income before income taxes as a result of the following:
		2014			2013			2012
	Income taxes at 35% federal tax rate	$	7,302,815		$	6,514,048		$	6,625,483
	Increase (decrease) resulting from:
	Tax-exempt interest and dividends		(2,213,701	)		(2,399,516	)		(2,419,917	)
	State taxes, net of federal tax benefit		699,960			624,928			610,450
	Other		(173,555	)		(81,538	)		(68,373	)
	Total income tax expense	$	5,615,519		$	4,657,922		$	4,747,643
	The tax effects of temporary differences that give rise to significant portions of the deferred tax assets and deferred liabilities are as follows:
		2014			2013
	Deferred tax assets:
	Allowance for loan losses	$	3,134,667		$	2,961,646
	Other real estate owned		2,393,507			1,756,144
	Other-than-temporary impairment on securities		96,924			96,924
	Accrued vacation		239,949			207,677
	Other deferred tax assets		786,818			887,205
			6,651,865			5,909,596
	Deferred tax liabilities:
	Net unrealized gains on securities available-for-sale		(2,626,423	)		(264,952	)
	Bank premises and equipment		(971,570	)		(381,903	)
	Other deferred tax liabilities		(420,695	)		(235,638	)
			(4,018,688	)		(882,493	)
	Net deferred tax asset	$	2,633,177		$	5,027,103
	Income taxes currently payable of approximately $110,000 and $221,000 are included in accrued expenses and other liabilities as of December 31, 2014 and 2013, respectively.
	The Company and its subsidiaries file one income tax return in the U.S. federal jurisdiction and separate tax returns for the state of Iowa. The Company is no longer subject to U.S. federal income and state tax examinations for years before 2011.
	The Company follows the accounting requirements for uncertain tax positions. Management has determined that the Company has no material uncertain tax positions and no material accrued interest or penalties as of or for the years ended December 31, 2014 and 2013 that would require recognition. The Company had no significant unrecognized tax benefits as of December 31, 2014, that if recognized, would affect the effective tax rate. The Company had no positions for which it deemed that it is reasonably possible that the total amounts of the unrecognized tax benefit will significantly increase or decrease within the 12 months as of December 31, 2014 and 2013.

Note_14_Commitments_Contingenc

Note 14 - Commitments, Contingencies and Concentrations of Credit Risk	12 Months Ended
	Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies Disclosure [Text Block]	Note 14. Commitments, Contingencies and Concentrations of Credit Risk
	The Company is party to financial instruments with off-balance-sheet risk in the normal course of business. These financial instruments include commitments to extend credit and standby letters of credit. These instruments involve, to varying degrees, elements of credit risk in excess of the amount recognized in the balance sheet.
	The Company’s exposure to credit loss in the event of nonperformance by the other party to the financial instrument for commitments to extend credit and standby letters of credit is represented by the contractual amount of those instruments. The Company uses the same credit policies in making commitments and conditional obligations as they do for on-balance-sheet instruments. A summary of the Company’s commitments is as follows:
		2014		2013
	Commitments to extend credit	$	159,527,000	$	115,278,000
	Standby letters of credit		6,526,000		3,135,000
		$	166,053,000	$	118,413,000
	Commitments to extend credit are agreements to lend to a customer as long as there is no violation of any condition established in the contract. At December 31, 2014 and 2013, approximately $108,039,000 and $85,045,000 of the commitments to extend credit were fixed interest rates. Since many of the commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily represent future cash requirements. The Banks evaluate each customer’s creditworthiness on a case-by-case basis. The amount of collateral obtained, if deemed necessary by the Banks upon extension of credit, is based on management’s credit evaluation of the party.
	Standby letters of credit are conditional commitments issued by the Banks to guarantee the performance of a customer to a third-party. Those guarantees are primarily issued to support public and private borrowing arrangements. The credit risk involved in issuing letters of credit is essentially the same as that involved in extending loan facilities to customers. Collateral held varies and is required in instances which the Banks deem necessary. In the event the customer does not perform in accordance with the terms of the agreement with the third party, the Banks would be required to fund the commitment. The maximum potential amount of future payments the Banks could be required to make is represented by the contractual amount shown in the summary above. If the commitments were funded, the Banks would be entitled to seek recovery from the customer.
	At December 31, 2014 and 2013, the Banks have established liabilities totaling $481,000 and $364,000, respectively to cover estimated credit losses for off-balance-sheet loan commitments and standby letters of credit.
	In the normal course of business, the Company is involved in various legal proceedings. In the opinion of management, any liability resulting from such proceedings would not have a material adverse effect on the Company’s financial statements.
	Concentrations of credit risk: The Banks originate real estate, consumer, and commercial loans, primarily in Boone, Hancock, Marshall, Polk and Story Counties in Iowa, as well as adjacent counties. Although the Banks have diversified loan portfolios, a substantial portion of their borrowers’ ability to repay loans is dependent upon economic conditions in the Banks’ market areas.

Note_15_Regulatory_Matters

Note 15 - Regulatory Matters	12 Months Ended
	Dec. 31, 2014
Disclosure Text Block [Abstract]
Regulatory Capital Requirements under Banking Regulations [Text Block]	Note 15. Regulatory Matters
	The Company and the Banks are subject to various regulatory capital requirements administered by the federal banking agencies. Failure to meet minimum capital requirements can initiate certain mandatory and possible additional discretionary actions by regulators that, if undertaken, could have a direct material effect on the Company’s and Banks’ financial statements. Under capital adequacy guidelines and the regulatory framework for prompt corrective action, the Company and the Banks must meet specific capital guidelines that involve quantitative measures of their assets, liabilities and certain off-balance-sheet items as calculated under regulatory accounting practices. The capital amounts and classification are also subject to qualitative judgments by the regulators about components, risk weightings, and other factors. Prompt corrective action provisions are not applicable to bank holding companies. Regulators also have the ability to impose higher limits than those specified by capital adequacy guidelines if they so deem necessary.
	Quantitative measures established by regulation to ensure capital adequacy require the Company and each subsidiary bank to maintain minimum amounts and ratios (set forth in the following table) of total and Tier I capital (as defined in the regulations) to risk-weighted assets (as defined), and of Tier I capital (as defined) to average assets (as defined). Management believes, as of December 31, 2014 and 2013, that the Company and each subsidiary bank met all capital adequacy requirements to which they are subject.
	As of December 31, 2014, the most recent notification from the federal banking regulators categorized the Banks as well capitalized under the regulatory framework for prompt corrective action. To be categorized as well capitalized, the Banks must maintain minimum total risk-based, Tier I risk-based, and Tier I leverage ratios as set forth in the table. Management believes there are no conditions or events since that notification that have changed the institution’s category. The Company’s and each of the subsidiary bank’s actual capital amounts and ratios as of December 31, 2014 and 2013 are also presented in the table.
												To Be Well
												Capitalized Under
							For Capital					Prompt Corrective
		Actual					Adequacy Purposes					Action Provisions
		Amount		Ratio			Amount		Ratio			Amount		Ratio
	As of December 31, 2014:
	Total capital (to risk- weighted assets):
	Consolidated	$	151,146		16.6	%	$	72,879		8	%		N/A		N/A
	Boone Bank & Trust		13,948		15.7			7,123		8		$	8,904		10	%
	First National Bank		69,174		14.7			37,568		8			46,960		10
	Reliance State Bank		21,727		13.2			13,166		8			16,457		10
	State Bank & Trust		18,708		15.8			9,485		8			11,856		10
	United Bank & Trust		14,089		21.3			5,295		8			6,618		10
	Tier 1 capital (to risk- weighted assets):
	Consolidated	$	141,739		15.6	%	$	36,440		4	%		N/A		N/A
	Boone Bank & Trust		13,084		14.7			3,562		4		$	5,342		6	%
	First National Bank		65,112		13.9			18,784		4			28,176		6
	Reliance State Bank		19,966		12.1			6,583		4			9,874		6
	State Bank & Trust		17,224		14.5			4,742		4			7,113		6
	United Bank & Trust		13,313		20.1			2,647		4			3,971		6
	Tier 1 capital (to average- weighted assets):
	Consolidated	$	141,739		11	%	$	51,604		4	%		N/A		N/A
	Boone Bank & Trust		13,084		9.8			5,325		4		$	6,656		5	%
	First National Bank		65,112		9.4			27,671		4			34,589		5
	Reliance State Bank		19,966		9.6			8,321		4			10,402		5
	State Bank & Trust		17,224		10.9			6,318		4			7,898		5
	United Bank & Trust		13,313		12.3			4,315		4			5,394		5
												To Be Well
												Capitalized Under
							For Capital					Prompt Corrective
		Actual					Adequacy Purposes					Action Provisions
		Amount		Ratio			Amount		Ratio			Amount		Ratio
	As of December 31, 2013:
	Total capital (to risk- weighted assets):
	Consolidated	$	143,976		17.2	%	$	67,068		8	%		N/A		N/A
	Boone Bank & Trust		13,457		16.1			6,690		8		$	8,362		10	%
	First National Bank		67,231		16.4			32,838		8			41,048		10
	Reliance State Bank		19,616		12.2			12,916		8			16,145		10
	State Bank & Trust		17,734		16			8,876		8			11,096		10
	United Bank & Trust		13,677		19.6			5,597		8			6,996		10
	Tier 1 capital (to risk- weighted assets):
	Consolidated	$	135,024		16.1	%	$	33,534		4	%		N/A		N/A
	Boone Bank & Trust		12,670		15.2			3,345		4		$	5,017		6	%
	First National Bank		63,299		15.4			16,419		4			24,629		6
	Reliance State Bank		18,130		11.2			6,458		4			9,687		6
	State Bank & Trust		16,344		14.7			4,438		4			6,657		6
	United Bank & Trust		12,802		18.3			2,798		4			4,198		6
	Tier 1 capital (to average- weighted assets):
	Consolidated	$	135,024		11	%	$	49,173		4	%		N/A		N/A
	Boone Bank & Trust		12,670		9.8			5,158		4		$	6,447		5	%
	First National Bank		63,299		10			25,178		4			31,472		5
	Reliance State Bank		18,130		8.6			8,452		4			10,565		5
	State Bank & Trust		16,344		10.4			6,282		4			7,852		5
	United Bank & Trust		12,802		11.7			4,378		4			5,472		5
	Federal and state banking regulations place certain restrictions on dividends paid and loans or advances made by the Banks to the Company. Dividends paid by each Bank to the Company would be prohibited if the effect thereof would cause the Bank’s capital to be reduced below applicable minimum capital requirements. Except for the potential effect on the Company’s level of dividends, management believes that these restrictions currently do not have a significant impact on the Company.

Note_16_Fair_Value_Measurement

Note 16 - Fair Value Measurements	12 Months Ended
	Dec. 31, 2014
Fair Value Disclosures [Abstract]
Fair Value Disclosures [Text Block]	Note 16. Fair Value Measurements
	Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. A fair value measurement assumes that the transaction to sell the asset or transfer the liability occurs in the principal market for the asset or liability or, in the absence of a principal market, the most advantageous market for the asset or liability. The price in the principal (or most advantageous) market used to measure the fair value of the asset or liability shall not be adjusted for transaction costs. An orderly transaction is a transaction that assumes exposure to the market for a period prior to the measurement date to allow for marketing activities that are usual and customary for transactions involving such assets and liabilities; it is not a forced transaction. Market participants are buyers and sellers in the principal market that are (i) independent, (ii) knowledgeable, (iii) able to transact, and (iv) willing to transact.
	The standards require the use of valuation techniques that are consistent with the market approach, the income approach, and/or the cost approach. The market approach uses prices and other relevant information generated by market transactions involving identical or comparable assets and liabilities. The income approach uses valuation techniques to convert future amounts, such as cash flows or earnings, to a single present amount on a discounted basis. The cost approach is based on the amount that currently would be required to replace the service capacity of an asset (replacement cost). Valuation techniques are consistently applied. Inputs to valuation techniques refer to the assumptions that market participants would use in pricing the asset or liability. Inputs may be observable, meaning those that reflect the assumptions market participants would use in pricing the asset or liability developed based on market data obtained from independent sources, or unobservable, meaning those that reflect the Company’s own assumptions about the assumptions market participants would use in pricing the asset or liability developed based on the best information available in the circumstances. In that regard, a fair value hierarchy was established for valuation inputs that gives the highest priority to quoted prices in active markets for identical assets or liabilities and the lowest priority to unobservable inputs. The fair value hierarchy is as follows:
	Level 1:          Inputs to the valuation methodology are quoted prices, unadjusted, for identical assets or liabilities in active markets. A quoted price in an active market provides the most reliable evidence of fair value and shall be used to measure fair value whenever available.
	Level 2:          Inputs to the valuation methodology include: quoted prices for similar assets or liabilities in active markets; quoted process for identical or similar assets or liabilities in markets that are not active; inputs other than quoted prices that are observable for the asset or liability (such as interest rates, volatility, prepayment speeds, credit risk); or inputs derived principally from or can be corroborated by observable market data by correlation or other means.
	Level 3:          Inputs to the valuation methodology are unobservable and significant to the fair value measurement. Level 3 assets and liabilities include financial instruments whose value is determined using discounted cash flow methodologies, as well as instruments for which the determination of fair value requires significant management judgment or estimation.
	The following table presents the balances of assets measured at fair value on a recurring basis by level as of December 31, 2014 and 2013:
	Description		Total				Level 1				Level 2			Level 3
	2014
	U.S. government treasuries		$	1,448,000			$	1,448,000			$	-		$	-
	U.S. government agencies			87,307,000				-				87,307,000			-
	U.S. government mortgage-backed securities			120,985,000				-				120,985,000			-
	State and political subdivisions			281,776,000				-				281,776,000			-
	Corporate bonds			47,319,000				-				47,319,000			-
	Equity securities, common stock			758,000				758,000				-			-
	Equity securities, other			2,909,000				-				2,909,000			-
			$	542,502,000			$	2,206,000			$	540,296,000		$	-
	2013
	U.S. government agencies		$	61,178,000			$	-			$	61,178,000		$	-
	U.S. government mortgage-backed securities			155,142,000				-				155,142,000			-
	State and political subdivisions			315,224,000				-				315,224,000			-
	Corporate bonds			44,752,000				-				44,752,000			-
	Equity securities, common stock			841,000				841,000				-			-
	Equity securities, other			2,902,000				-				2,902,000			-
			$	580,039,000			$	841,000			$	579,198,000		$	-
	Level 1 securities include those traded on an active exchange, such as the New York Stock Exchange, as well as U.S. Treasury securities that are traded by dealers or brokers in active over-the-counter markets.  Other available-for-sale securities are reported at fair value utilizing Level 2 inputs. For these securities, the Company obtains fair value measurements from an independent pricing service. The fair value measurements consider observable data that may include dealer quotes, market spreads, cash flows, the U.S. Treasury yield curve, live trading levels, trade execution data, market consensus prepayment speeds, credit information and the security’s terms and conditions, among other things.
	Certain assets are measured at fair value on a nonrecurring basis; that is, they are subject to fair value adjustments in certain circumstances (for example, when there is evidence of impairment or a change in previously recognized impairment).  The following table presents the assets carried on the balance sheet (after specific reserves) by caption and by level with the valuation hierarchy as of December 31, 2014 and 2013:
	Description		Total				Level 1				Level 2			Level 3
	2014
	Loans		$	692,000			$	-			$	-		$	692,000
	Other real estate owned			8,436,000				-				-			8,436,000
	Total		$	9,128,000			$	-			$	-		$	9,128,000
	2013
	Loans		$	648,000			$	-			$	-		$	648,000
	Other real estate owned			8,861,000				-				-			8,861,000
	Total		$	9,509,000			$	-			$	-		$	9,509,000
	Loans: Loans in the tables above consist of impaired credits held for investment. In accordance with the loan impairment guidance, impairment was measured based on the fair value of collateral less estimated selling costs for collateral dependent loans. Fair value for impaired loans is based upon appraised values adjusted for trends observed in the market. A valuation allowance was recorded for the excess of the loan’s recorded investment over the amounts determined by the collateral value method. This valuation is a component of the allowance for loan losses. The Company considers these fair values level 3.
	Other Real Estate Owned: Other real estate owned in the table above consists of real estate obtained through foreclosure. Other real estate owned is recorded at fair value less estimated selling costs, at the date of transfer. Subsequent to the transfer, other real estate owned is carried at the lower of cost or fair value, less estimated selling costs. The carrying value of other real estate owned is not re-measured to fair value on a recurring basis but is subject to fair value adjustments when the carrying value exceeds the fair value less estimated selling costs. Management uses appraised values and adjusts for trends observed in the market and for disposition costs in determining the value of other real estate owned. A valuation allowance was recorded for the excess of the asset’s recorded investment over the amount determined by the fair value, less estimated selling costs. This valuation allowance is a component of the allowance for other real estate owned. The Company considers these fair values level 3.
	The significant inputs used in the fair value measurements for Level 3 assets measured at fair value on a nonrecurring basis as of December 31, 2014 and 2013 are as follows:
			2014
			Fair Value			Valuation	Range of Unobservable		Range
						Techniques	Inputs		(Average)
	Impaired Loans		$	692,000		Evaluation of collateral	Estimation of value			NM*
	Other real estate owned		$	8,436,000		Appraisal	Appraisal adjustment			4%-10%	-7%
			2013
			Fair Value			Valuation	Range of Unobservable		Range
						Techniques	Inputs		(Average)
	Impaired Loans		$	648,000		Evaluation of collateral	Estimation of value			NM*
	Other real estate owned		$	8,861,000		Appraisal	Appraisal adjustment			6%-10%	-8%
	* Not Meaningful. Evaluations of the underlying assets are completed for each impaired loan with a specific reserve. The types of collateral vary widely and could include accounts receivables, inventory, a variety of equipment and real estate. Collateral evaluations are reviewed and discounted as appropriate based on knowledge of the specific type of collateral. In the case of real estate, an independent appraisal may be obtained. Types of discounts considered included aging of receivables, condition of the collateral, potential market for the collateral and estimated disposal costs. These discounts will vary from loan to loan, thus providing a range would not be meaningful.
	GAAP requires disclosure of the fair value of financial assets and financial liabilities, including those that are not measured and reported at fair value on a recurring basis or nonrecurring basis.  The methodologies for estimating the fair value of financial assets and financial liabilities that are measured at fair value on a recurring or nonrecurring basis are discussed above.  The methodologies for other financial assets and financial liabilities are discussed below.
	Fair value of financial instruments: The following methods and assumptions were used by the Company in estimating fair value disclosures:
	Cash and due from banks, federal funds sold and interest bearing deposits in financial institutions: The recorded amount of these assets approximates fair value.
	Securities available-for-sale: Fair value measurement for Level 1 securities is based upon quoted prices. Fair value measurement for Level 2 securities are based upon quoted prices, if available. If quoted prices are not available, the Company obtains fair value measurements from an independent pricing service. The fair value measurements consider observable data that may include dealer quotes, market spreads, cash flows, the U.S. Treasury yield curve, live trading levels, trade execution data, market consensus prepayment speeds, credit information and the security’s terms and conditions, among other things. Level 1 securities include equity securities traded on an active exchange, such as the New York Stock Exchange, as well as U.S. Treasury securities that are traded by dealers or brokers in active over-the-counter markets.  Other securities available-for-sale are reported at fair value utilizing Level 2 inputs.
	Loans held for sale: The fair value of loans held for sale is based on prevailing market prices.
	Loans receivable: The fair value of loans is calculated by discounting scheduled cash flows through the estimated maturity using estimated market discount rates, which reflect the credit and interest rate risk inherent in the loan. The estimate of maturity is based on the historical experience, with repayments for each loan classification modified, as required, by an estimate of the effect of current economic and lending conditions. The effect of nonperforming loans is considered in assessing the credit risk inherent in the fair value estimate.
	Deposit liabilities: Fair values of deposits with no stated maturity, such as noninterest-bearing demand deposits, savings and NOW accounts, and money market accounts, are equal to the amount payable on demand as of the respective balance sheet date. Fair values of certificates of deposit are based on the discounted value of contractual cash flows. The discount rate is estimated using the rates currently offered for deposits of similar remaining maturities. The fair value estimates do not include the benefit that results from the low-cost funding provided by the deposit liabilities compared to the cost of borrowing funds in the market.
	Securities sold under agreements to repurchase and federal funds purchased: The carrying amounts of securities sold under agreements to repurchase and federal funds purchased approximate fair value because of the generally short-term nature of the instruments.
	FHLB advances and other borrowings: Fair values of FHLB advances and other borrowings are estimated using discounted cash flow analysis based on interest rates currently being offered with similar terms.
	Accrued income receivable and accrued interest payable: The carrying amounts of accrued income receivable and accrued interest payable approximate fair value.
	Commitments to extend credit and standby letters of credit: The fair values of commitments to extend credit and standby letters of credit are based on fees currently charged to enter into similar agreements, taking into account the remaining terms of the agreement and credit worthiness of the counterparties. The carrying value and fair value of the commitments to extend credit and standby letters of credit are not considered significant.
	Limitations: Fair value estimates are made at a specific point in time, based on relevant market information and information about the financial instrument. Because no market exists for a significant portion of the Company’s financial instruments, fair value estimates are based on judgments regarding future expected loss experience, current economic conditions, risk characteristics of various financial instruments, and other factors. These estimates are subjective in nature and involve uncertainties and matters of significant judgment and, therefore, cannot be determined with precision. Changes in assumptions could significantly affect the estimates.
	The following table includes the carrying amounts and estimated fair values of financial assets and liabilities as of December 31, 2014 and 2013.
				2014								2013
	Fair Value						Estimated							Estimated
	Hierarchy		Carrying				Fair				Carrying			Fair
	Level		Amount				Value				Amount			Value
Financial assets:
Cash and due from banks	Level 1		$	23,730,257			$	23,730,000			$	24,270,031		$	24,270,000
Federal funds sold	Level 1			6,000				6,000				-			-
Interest bearing deposits	Level 1			31,463,382				31,463,000				23,628,117			23,628,000
Securities available-for-sale	See previous table			542,502,381				542,502,000				580,039,080			580,039,000
Loans receivable, net	Level 2			658,440,998				656,896,000				564,501,547			562,073,000
Loans held for sale	Level 2			704,850				705,000				295,618			296,000
Accrued income receivable	Level 1			7,471,023				7,471,000				7,437,673			7,438,000
Financial liabilities:
Deposits	Level 2		$	1,052,123,257			$	1,052,082,000			$	1,011,803,178		$	1,014,150,000
Securities sold under agreements to repurchase and federal funds purchased	Level 1			51,265,011				51,265,000				39,616,644			39,617,000
FHLB advances	Level 2			14,467,737				15,281,000				14,540,526			15,441,000
Other borrowings	Level 2			23,000,000				24,339,000				20,000,000			22,033,000
Accrued interest payable	Level 1			536,370				536,000				594,223			594,000

Note_17_Subsequent_Events

Note 17 - Subsequent Events	12 Months Ended
	Dec. 31, 2014
Subsequent Events [Abstract]
Subsequent Events [Text Block]	Note 17. Subsequent Events
	Management evaluated subsequent events through the date the financial statements were issued. There were no other significant events or transactions occurring after December 31, 2014, but prior to March 12, 2015, that provided additional evidence about conditions that existed at December 31, 2014. There were no other significant events or transactions that provided evidence about conditions that did not exist at December 31, 2014.

Note_18_Ames_National_Corporat

Note 18 - Ames National Corporation (Parent Company Only) Financial Statements	12 Months Ended
	Dec. 31, 2014
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
Condensed Financial Information of Parent Company Only Disclosure [Text Block]	Note 18. Ames National Corporation (Parent Company Only) Financial Statements
	Information relative to the Parent Company’s balance sheets at December 31, 2014 and 2013, and statements of income and cash flows for each of the years in the three-year period ended December 31, 2014, is as follows:
	CONDENSED BALANCE SHEETS
	December 31, 2014 and 2013
		2014			2013
	ASSETS
	Cash and due from banks	$	29,972		$	24,591
	Interest bearing deposits in banks		7,615,497			8,373,009
	Securities available-for-sale		758,100			840,900
	Investment in bank subsidiaries		141,553,283			130,167,386
	Loans receivable, net		3,252,197			3,348,973
	Premises and equipment, net		3,180,973			533,513
	Accrued income receivable		9,435			17,747
	Deferred income taxes		88,092			477,256
	Other assets		242,417			99,930
	Total assets	$	156,729,966		$	143,883,305
	LIABILITIES
	Dividends payable	$	1,675,964		$	1,489,746
	Accrued expenses and other liabilities		379,584			287,375
	Total liabilities		2,055,548			1,777,121
	STOCKHOLDERS' EQUITY
	Common stock		18,621,826			18,865,830
	Additional paid-in capital		20,878,728			22,651,222
	Retained earnings		110,701,847			102,154,498
	Accumulated other comprehensive income		4,472,017			451,132
	Treasury stock		-			(2,016,498	)
	Total stockholders' equity		154,674,418			142,106,184
	Total liabilities and stockholders' equity	$	156,729,966		$	143,883,305
	CONDENSED STATEMENTS OF INCOME
	Years Ended December 31, 2014, 2013 and 2012
		2014			2013			2012
	Operating income:
	Equity in net income of bank subsidiaries	$	14,912,849		$	14,159,629		$	14,212,775
	Interest		207,230			267,928			505,918
	Dividends		26,400			22,800			20,400
	Rental income		121,441			117,303			118,545
	Gain on the sale of premises and equipment		1,256,924			-			-
	Other income		1,525,000			1,487,581			1,364,000
	Securities (losses), net		-			-			(83,180	)
			18,049,844			16,055,241			16,138,458
	Credit for loan losses		-			(77,000	)		(224,000	)
	Operating income after credit for loan losses		18,049,844			16,132,241			16,362,458
	Operating expenses		2,609,937			2,313,897			2,208,650
	Income before income taxes		15,439,907			13,818,344			14,153,808
	Income tax expense (benefit)		188,700			(135,300	)		(28,500	)
	Net income	$	15,251,207		$	13,953,644		$	14,182,308
	CONDENSED STATEMENTS OF CASH FLOWS
	Years Ended December 31, 2014, 2013 and 2012
		2014			2013			2012
	CASH FLOWS FROM OPERATING ACTIVITIES
	Net income	$	15,251,207		$	13,953,644		$	14,182,308
	Adjustments to reconcile net income to net cash provided by operating activities:
	Depreciation		63,020			22,297			39,116
	Credit for loan losses		-			(77,000	)		(224,000	)
	Amortization, net		-			-			52,200
	Provision (credit) for deferred income taxes		419,800			(11,879	)		47,138
	Securities (gains), net		-			-			(176,671	)
	Other-than-temporary impairment of securities available-for-sale		-			-			259,851
	Gain on sale of premises and equipment		(1,256,924	)		-			-
	Equity in net income of bank subsidiaries		(14,912,848	)		(14,159,629	)		(14,212,775	)
	Dividends received from bank subsidiaries		7,600,000			7,200,000			8,428,000
	Decrease in accrued income receivable		8,312			12,243			52,430
	(Increase) decrease in other assets		(142,487	)		(84,930	)		100,000
	Increase in accrued expense and other liabilities		92,209			28,440			81,958
Net cash provided by operating activities		7,122,289			6,883,186			8,629,555
CASH FLOWS FROM INVESTING ACTIVITIES
Proceeds from sale of securities available-for-sale		-			-			3,030,867
Proceeds from maturities and calls of securities available-for-sale		-			-			416,002
(Increase) decrease in interest bearing deposits in banks		757,512			(5,377,200	)		1,850,388
(Increase) decrease in loans		96,776			4,363,136			(487,821	)
Proceeds from sale of bank premises and equipment		1,746,444			-			-
Purchase of bank premises and equipment		(3,200,000	)		(9,854	)		(29,226	)
Investment in bank subsidiaries		-			-			(8,017,613	)
Net cash used in investing activities		(599,268	)		(1,023,918	)		(3,237,403	)
CASH FLOWS FROM FINANCING ACTIVITIES
Dividends paid		(6,517,640	)		(5,865,866	)		(5,400,329	)
Net cash used in financing activities		(6,517,640	)		(5,865,866	)		(5,400,329	)
Net increase (decrease) in cash and cash equivalents		5,381			(6,598	)		(8,177	)
CASH AND DUE FROM BANKS
Beginning		24,591			31,189			39,366
Ending	$	29,972		$	24,591		$	31,189
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION
Cash receipts for income taxes	$	85,362		$	27,089		$	149,519

Note_19_Selected_Quarterly_Fin

Note 19 - Selected Quarterly Financial Data (Unaudited)	12 Months Ended
	Dec. 31, 2014
Quarterly Financial Information Disclosure [Abstract]
Quarterly Financial Information [Text Block]	Note 19. Selected Quarterly Financial Data (Unaudited)
		2014
		31-Mar		30-Jun		30-Sep		31-Dec
	Total interest income	$	9,920,281	$	10,145,907	$	10,120,151	$	10,778,012
	Total interest expense		1,186,496		1,166,552		1,102,532		1,091,521
	Net interest income		8,733,785		8,979,355		9,017,619		9,686,491
	Provision for loan losses		39,231		35,644		55,145		299,120
	Net interest income after provision for loan losses		8,694,554		8,943,711		8,962,474		9,387,371
	Noninterest income		2,945,784		1,733,972		1,828,690		2,743,633
	Noninterest expense		5,329,102		5,409,107		5,666,422		7,968,832
	Income before income taxes		6,311,236		5,268,576		5,124,742		4,162,172
	Income tax expense		1,785,145		1,413,653		1,393,256		1,023,465
	Net income	$	4,526,091	$	3,854,923	$	3,731,486	$	3,138,707
	Basic and diluted earnings per common share	$	0.49	$	0.41	$	0.4	$	0.34
		2013
		31-Mar		30-Jun		30-Sep		31-Dec
	Total interest income	$	9,376,641	$	9,401,263	$	9,750,476	$	9,905,433
	Total interest expense		1,291,751		1,294,540		1,239,335		1,249,137
	Net interest income		8,084,890		8,106,723		8,511,141		8,656,296
	Provision for loan losses		13,574		60,000		92,388		620,428
	Net interest income after provision for loan losses		8,071,316		8,046,723		8,418,753		8,035,868
	Noninterest income		1,842,968		2,089,020		1,819,733		1,966,057
	Noninterest expense		5,119,096		5,838,189		5,230,503		5,491,084
	Income before income taxes		4,795,188		4,297,554		5,007,983		4,510,841
	Income tax expense		1,209,254		1,018,858		1,295,916		1,133,894
	Net income	$	3,585,934	$	3,278,696	$	3,712,067	$	3,376,947
	Basic and diluted earnings per common share	$	0.39	$	0.35	$	0.4	$	0.36

Accounting_Policies_by_Policy_

Accounting Policies, by Policy (Policies)	12 Months Ended
	Dec. 31, 2014
Accounting Policies [Abstract]
Segment Reporting, Policy [Policy Text Block]	Segment information: The Company uses the “management approach” for reporting information about segments in annual and interim financial statements. The “management approach” is based on the way the chief operating decision-maker organizes segments within a company for making operating decisions and assessing performance. Based on the “management approach” model, the Company has determined that its business is comprised of one operating segment: banking. The banking segment generates revenues through personal, business, agricultural and commercial lending, management of the investment securities portfolio, deposit account services and wealth management services.
Consolidation, Policy [Policy Text Block]	Consolidation: The consolidated financial statements include the accounts of Ames National Corporation (the Parent Company) and its wholly-owned subsidiaries, First National Bank, Ames, Iowa (FNB); State Bank & Trust Co., Nevada, Iowa (SBT); Boone Bank & Trust Co., Boone, Iowa (BBT); Reliance State Bank (RSB), Story City, Iowa; and United Bank & Trust NA, Marshalltown, Iowa (UBT) (collectively, the Banks). All significant intercompany transactions and balances have been eliminated in consolidation.
Use of Estimates, Policy [Policy Text Block]	Use of estimates: The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America (GAAP) requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Material estimates that are particularly susceptible to significant change in the near term relate to the determination of the allowance for loan losses, valuation of goodwill, other intangible assets and acquisitions and the assessment of other-than-temporary impairment for certain financial instruments.
Cash and Cash Equivalents, Policy [Policy Text Block]	Cash and due from banks: For purposes of reporting cash flows, cash and due from banks include cash on hand and amounts due from banks. The Company reports net cash flows for customer loan transactions, deposit transactions and short-term borrowings with maturities of 90 days or less.
Marketable Securities, Available-for-sale Securities, Policy [Policy Text Block]	Securities available-for-sale: The Company classifies all securities as available-for-sale. Securities available-for-sale are those securities the Company may decide to sell if needed for liquidity, asset-liability management or other reasons. Securities available-for-sale are reported at fair value, with the change in the net unrealized gains reported as other comprehensive income and as accumulated other comprehensive income, net of taxes, a separate component of stockholders’ equity.
	Gains and losses on the sale of securities are determined using the specific identification method based on amortized cost and are reflected in results of operation at the time of sale. Interest and dividend income, adjusted by amortization of purchase premium or discount over the estimated life of the security using the level yield method, is included in income as earned.
	Declines in the fair value of securities available-for-sale below their cost that are deemed to be other-than-temporary are reflected in earnings as realized losses. In estimating other-than-temporary impairment losses, management considers (1) the intent to sell the investment securities and the more likely than not requirement that the Company will be required to sell the investment securities prior to recovery (2) the length of time and the extent to which the fair value has been less than cost and (3) the financial condition and near-term prospects of the issuer. Due to potential changes in conditions, it is at least reasonably possible that changes in management’s assessment of other-than-temporary impairment will occur in the near term and that such changes could be material to the amounts reported in the Company’s financial statements.
Receivables, Policy [Policy Text Block]	Loans: Loans are stated at the principal amount outstanding, net of deferred loan fees and the allowance for loan losses. Interest on loans is credited to income as earned based on the principal amount outstanding. The Banks’ policy is to discontinue the accrual of interest income on any loan 90 days or more past due unless the loans are well collateralized and in the process of collection. Income on nonaccrual loans is subsequently recognized only to the extent that cash payments are received and principal obligations are expected to be recoverable. Nonaccrual loans are returned to an accrual status when, in the opinion of management, the financial position of the borrower indicates there is no longer any reasonable doubt as to timely payment of principal or interest.
	Acquired loans: Loans acquired in a business combination are stated at the principal amount outstanding with a discount attributable at least in part to credit quality. The difference between contractual payments at acquisition and the cash flows expected to be collected is referred to as the non-accretable difference. This amount is not recognized as a yield adjustment or as a loss accrual or a valuation allowance. Any excess of cash flows expected at acquisition over the estimated fair value is referred to as the accretable yield and is recognized into interest income over the remaining life of the loans when there is reasonable expectation about the amount and timing of such cash flows. Increases in expected cash flows subsequent to the initial investment are recognized prospectively through adjustment of the yield on the loan over its remaining estimated life. Decreases in expected cash flows are recognized immediately as impairment. If the Company does not have the information necessary to reasonable estimate cash flows to be expected, it may use the cost recovery method or cash basis method of income recognition. Valuation allowance on the acquired impaired loans reflect only losses after the acquisition
Loans and Leases Receivable, Allowance for Loan Losses Policy [Policy Text Block]	Allowance for loan losses: The allowance for loan losses is established through a provision for loan losses and maintained at a level deemed appropriate by management to provide for known and inherent risks in the loan portfolio. The allowance is based upon an ongoing review of past loan loss experience, current economic conditions, the underlying collateral value securing the loans and other adverse situations that may affect the borrower’s ability to repay. Loans which are deemed to be uncollectible are charged-off and deducted from the allowance. Recoveries on loans charged-off are added to the allowance. This evaluation is inherently subjective and requires estimates that are susceptible to significant revisions as more information becomes available. Due to potential changes in conditions, it is at least reasonably possible that changes in estimates will occur in the near term and that such changes could materially affect the amounts reported in the Company’s financial statements.
	The Company’s allowance for possible loan losses consists of two components (i) specific reserves based on probable losses on specific loans and (ii) a general allowance based on historical loan loss experience, general economic conditions and other qualitative risk factors both internal and external to the Company.
	The allowances established for probable losses on specific loans are based on a regular analysis and evaluation of problem loans. Loans are classified based on an internal credit risk rating process that evaluates, among other things: (i) the obligor’s ability to repay; (ii) the underlying collateral, if any; and (iii) the economic environment and industry in which the borrower operates. A loan is considered impaired when, based on current information and events, it is probable that the Company will be unable to collect the scheduled payments of principal or interest when due according to the contractual terms of the loan agreement. Factors considered by management in determining impairment include payment status, collateral value, and the probability of collecting scheduled principal and interest payments when due. Smaller balance homogeneous loans are evaluated for impairment in total. Such loans include residential first mortgage loans secured by one-to-four family residences, residential construction loans, and automobile loans. Commercial and agricultural loans and mortgage loans secured by other properties are evaluated individually for impairment when analysis of borrower operating results and financial condition indicates that underlying cash flows of the borrower’s business are not adequate to meet its debt service requirements. Often this is associated with a delay or shortfall in payments of 90 days or more. Nonaccrual loans are often also considered impaired. Impaired loans, or portions thereof, are charged-off when deemed uncollectible.
	The general component of the allowance for loan losses is based on historical loan loss experience, general economic conditions and other qualitative risk factors both internal and external to the Company. The general component is determined by evaluating, among other things: (i) actual charge offs; (ii) the experience, ability and effectiveness of the Company’s lending management and staff; (iii) the effectiveness of the Company’s loan policies, procedures and internal controls; (iv) changes in asset quality; (v) changes in loan portfolio volume; (vi) the composition and concentrations of credit; (vii) the impact of competition on loan structuring and pricing; (viii) the effectiveness of the internal audit loan review function; (ix) the impact of environmental risks on portfolio risks; and (x) the impact of rising interest rates on portfolio risk (collectively, the variables). Management evaluates the degree of risk that each one of these variables has on the quality of the loan portfolio on a quarterly basis. Each variable is determined to have either a high, moderate or low degree of risk. The results are then input into a “general allocation matrix” to determine an appropriate general allocation of the allowance for losses.  Also included in the general component is an allocation for groups of loans with similar risk characteristics.
Finance, Loan and Lease Receivables, Held-for-sale, Policy [Policy Text Block]	Loans held for sale: Loans held for sale are the loans the Banks have the intent to sell in the foreseeable future. They are carried at the lower of aggregate cost or fair value. Net unrealized losses, if any, are recognized through a valuation allowance by charges to income. Gains and losses on sales of loans are determined by the difference between the sale proceeds and the carrying value of the loans, recognized at settlement date and recorded as noninterest income.
Property, Plant and Equipment, Policy [Policy Text Block]	Bank premises and equipment: Premises and equipment are stated at cost less accumulated depreciation. Depreciation expense is computed using straight-line and accelerated methods over the estimated useful lives of the respective assets. Depreciable lives range from 3 to 7 years for equipment and 15 to 39 years for premises.
Other Real Estate Owned [Policy Text Block]	Other real estate owned: Real estate properties acquired through or in lieu of foreclosure are initially recorded at the fair value less estimated selling cost at the date of foreclosure. Any write-downs based on the asset’s fair value at the date of acquisition are charged to the allowance for loan losses. Costs of significant property improvements are capitalized, whereas costs relating to holding property are expensed. The portion of interest costs relating to development of real estate is capitalized. Valuations are periodically performed by management and property held for sale is carried at the lower of the new cost basis or fair value less cost to sell and any subsequent write-downs are charged to operations. Impairment losses on property to be held and used are measured as the amount by which the carrying amount of a property exceeds its fair value less costs to sell. This evaluation is inherently subjective and requires estimates that are susceptible to significant revisions as more information becomes available. Due to potential changes in conditions, it is at least reasonably possible that changes in fair values will occur in the near term and that such changes could materially affect the amounts reported in the Company’s financial statements.
Goodwill and Intangible Assets, Policy [Policy Text Block]	Goodwill and core deposit intangible: Goodwill represents the excess of cost over fair value of net assets acquired. Goodwill resulting from acquisitions is not amortized, but is tested for impairment annually or whenever events change and circumstances indicate that it is more likely than not that impairment has occurred. Goodwill is tested for impairment using a two-step process that begins with an estimation of the fair value of a reporting unit. The second step, if necessary, measures the amount of impairment.
	Significant judgment is applied when goodwill is assessed for impairment. This judgment includes developing cash flow projections, selecting appropriate discount rates, identifying relevant market comparables, incorporating general economic and market conditions and selecting an appropriate control premium. At December 31, 2014, the Company management has completed the goodwill impairment analysis and determined goodwill was not impaired based on the fair value of the reporting unit.
	The only other significant intangible asset is a core deposit intangible. The core deposit intangible asset is determined to have a definite life and is amortized over the estimated useful life. The core deposit intangible asset is a customer based relationship valuation attributed to the expectation of a lower net cost of these deposits versus alternative sources of funds. The core deposit intangible asset and other long-lived assets are reviewed for impairment whenever events occur or circumstances indicate that the carrying amount may not be recoverable.
Trust Department Assets [Policy Text Block]	Trust department assets: Property held for customers in fiduciary or agency capacities are not included in the accompanying consolidated balance sheets, as such items are not assets of the Banks
Advertising Costs, Policy [Policy Text Block]	Advertising costs: Advertising costs are expensed as incurred.
Income Tax, Policy [Policy Text Block]	Income taxes: Deferred income taxes are provided on temporary differences between financial statement and income tax reporting. Temporary differences are differences between the amounts of assets and liabilities reported for financial statement purposes and their tax bases. Deferred tax assets are recognized for temporary differences that will be deductible in future years’ tax returns and for operating loss and tax credit carry forwards. Deferred tax assets are reduced by a valuation allowance if it is deemed more likely than not that some or all of the deferred tax assets will not be realized. Deferred tax liabilities are recognized for temporary differences that will be taxable in future years’ tax returns. Accounting for uncertainty in income taxes sets out a consistent framework to determine the appropriate level of tax reserves to maintain for uncertain tax positions. Benefits from tax positions taken or expected to be taken in a tax return are not recognized if the likelihood that the tax position would be sustained upon examination by a taxing authority is considered to be 50 percent or less. Interest and penalties are accounted for as a component of income tax expense.
	The Company files a consolidated federal income tax return, with each entity computing its taxes on a separate company basis. For state tax purposes, the Banks file franchise tax returns, while the Parent Company files a corporate income tax return.
Comprehensive Income, Policy [Policy Text Block]	Comprehensive income: Accounting principles generally require that recognized revenue, expenses, gains and losses be included in net income. Certain changes in assets and liabilities, such as unrealized gains and losses on securities available-for-sale, are reported as accumulated other comprehensive income, a separate component of the stockholders’ equity section of the consolidated balance sheet, and such items, along with net income, are components of the statement of comprehensive income. Gains and losses on securities available-for-sale are reclassified to net income as the gains or losses are realized upon sale of the securities. Other-than-temporary impairment charges are reclassified to net income at the time of the charge.
Off-Balance-Sheet Credit Exposure, Policy [Policy Text Block]	Financial instruments with off-balance-sheet risk: The Company, in the normal course of business, makes commitments to make loans which are not reflected in the consolidated financial statements. A summary of these commitments is disclosed in Note 14.
Transfers and Servicing of Financial Assets, Transfers of Financial Assets, Aggregation, Policy [Policy Text Block]	Transfers of financial assets and participating interests: Transfers of an entire financial asset or a participating interest in an entire financial asset are accounted for as sales when control over the assets has been surrendered. Control over transferred assets is deemed to be surrendered when (1) the assets have been isolated from the Company, (2) the transferee obtains the right (free of conditions that constrain it from taking advantage of that right) to pledge or exchange the transferred assets, and (3) the Company does not maintain effective control over the transferred assets through an agreement to repurchase them before their maturity.
	The transfer of a participating interest in an entire financial asset must also meet the definition of a participating interest. A participating interest in a financial asset has all of the following characteristics: (1) from the date of the transfer, it must represent a proportionate (pro rata) ownership in the financial asset, (2) from the date of transfer, all cash flows received, except any cash flows allocated as any compensation for servicing or other services performed, must be divided proportionately among participating interest holders in the amount equal to their share ownership, (3) the rights of each participating interest holder must have the same priority, and (4) no party has the right to pledge or exchange the entire financial asset unless all participating interest holders agree to do so.
Earnings Per Share, Policy [Policy Text Block]	Earnings per share: Basic earnings per share computations for the years ended December 31, 2014, 2013 and 2012, were determined by dividing net income by the weighted-average number of common shares outstanding during the years then ended. The Company had no potentially dilutive securities outstanding during the periods presented.
	The following information was used in the computation of basic earnings per share (EPS) for the years ended December 31, 2014, 2013, and 2012.
Reclassification, Policy [Policy Text Block]	Reclassifications:
	Certain reclassifications have been made to the prior consolidated financial statements to conform to the current period presentation. These reclassifications had no effect on stockholders’ equity and net income of the prior periods.
New Accounting Pronouncements, Policy [Policy Text Block]	New Accounting Pronouncements:
	In January 2014, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2014-04, Receivables—Troubled Debt Restructuring by Creditors (Subtopic 310-40): Reclassification of Residential Real Estate Collateralized Consumer Mortgage Loans Upon Foreclosure. The update clarifies when an in substance foreclosure occurs, that is, when a creditor is considered to have received physical possession of residential real estate property collateralizing a consumer mortgage loan. This is the point when the consumer mortgage loan should be derecognized and the real property recognized. For public companies, this update will be effective for interim and annual periods beginning after December 31, 2014. The adoption of this guidance will not have a material impact on the Company's consolidated financial statements.
	In June 2014, the FASB issued ASU No. 2014-11, “Transfers and Servicing (Topic 860): Repurchase-to-Maturity Transactions, Repurchase Financings, and Disclosures.” The new guidance aligns the accounting for repurchase-to-maturity transactions and repurchase agreements executed as a repurchase financing with the accounting for other typical repurchase agreements. The amendments in the ASU also require expanded disclosures about the nature of collateral pledged in repurchase agreements and similar transactions accounted for as secured borrowings. The amendments in this ASU are effective for public companies for the first interim or annual period beginning after December 15, 2014. The adoption of this ASU may result in additional disclosures but is not expected to impact significantly the Company’s consolidated financial statements.

Note_1_Summary_of_Significant_1

Note 1 - Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2014
Accounting Policies [Abstract]
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]		2014		2013		2012
	Basic earning per share computation:
	Net income	$	15,251,207	$	13,953,644	$	14,182,308
	Weighted average common shares outstanding		9,310,913		9,310,913		9,310,913
	Basic EPS	$	1.64	$	1.5	$	1.52

Note_2_Branch_Acquisitions_Tab

Note 2 - Branch Acquisitions (Tables)	12 Months Ended
	Dec. 31, 2014
Business Combinations [Abstract]
Schedule of Business Acquisitions, by Acquisition [Table Text Block]		2014			2013		2012
	Cash consideration transferred	$	4,147,680		$	-	$	5,400,000
	Recognized amounts of identifiable assets acquired and liabilities assumed:
	Cash and due from banks	$	20,576,661		$	-	$	49,703,137
	Interest bearing deposits in financial institutions		5,719,000			-		-
	Securities available-for-sale		10,602,454			-		-
	Loans receivable		44,620,021			-		46,103,022
	Accrued interest receivable		230,332			-		514,760
	Bank premises and equipment		3,864,900			-		864,500
	Other real estate owned		1,267,720			-		-
	Core deposit intangible asset		1,018,000			-		1,500,000
	Other assets		748,511			-		-
	Deposits		(81,962,650	)		-		(98,766,558	)
	Securities sold under agreements to repurchase		(2,815,297	)		-		-
	Accrued interest payable and other liabilities		(853,439	)		-		(119,610	)
	Total identifiable net assets (liabilities)		3,016,213			-		(200,749	)
	Goodwill	$	1,131,467		$	-	$	5,600,749
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]	Pass	$	29,840,000
	Watch		6,659,000
	Special Mention		1,478,000
	Substandard		5,460,000
	Deteriorated credit		2,147,000
	Total loans acquired at book value	$	45,584,000

Note_4_Debt_and_Equity_Securit1

Note 4 - Debt and Equity Securities (Tables)	12 Months Ended
	Dec. 31, 2014
Investments, Debt and Equity Securities [Abstract]
Schedule of Available-for-sale Securities Reconciliation [Table Text Block]				Gross			Gross
		Amortized		Unrealized			Unrealized			Estimated
		Cost		Gains			Losses			Fair Value
	2014:00:00
	U.S. government treasuries	$	1,431,392	$	16,050		$	-		$	1,447,442
	U.S. government agencies		86,997,445		822,410			(512,444	)		87,307,411
	U.S. government mortgage-backed securities		118,348,325		2,744,305			(107,641	)		120,984,989
	State and political subdivisions		277,328,201		5,097,127			(649,008	)		281,776,320
	Corporate bonds		47,759,479		470,427			(911,187	)		47,318,719
	Equity security, common stock		629,700		128,400			-			758,100
	Equity securities, other		2,909,400		-			-			2,909,400
		$	535,403,942	$	9,278,719		$	(2,180,280	)	$	542,502,381
				Gross			Gross
		Amortized		Unrealized			Unrealized			Estimated
		Cost		Gains			Losses			Fair Value
	2013:00:00
	U.S. government agencies	$	61,569,302	$	1,116,644		$	(1,508,155	)	$	61,177,791
	U.S. government mortgage-backed securities		153,857,058		2,846,821			(1,561,923	)		155,141,956
	State and political subdivisions		314,177,458		5,055,906			(4,009,231	)		315,224,133
	Corporate bonds		46,186,879		756,222			(2,191,401	)		44,751,700
	Equity security, common stock		629,700		211,200			-			840,900
	Equity securities, other		2,902,600		-			-			2,902,600
		$	579,322,997	$	9,986,793		$	(9,270,710	)	$	580,039,080
Investments Classified by Contractual Maturity Date [Table Text Block]		Amortized
		Cost		Fair Value
	Due in one year or less	$	42,443,069	$	42,818,363
	Due after one year through five years		292,052,292		297,458,655
	Due after five years through ten years		184,567,184		185,508,940
	Due after ten years		12,802,297		13,048,923
			531,864,842		538,834,881
	Equity securities		3,539,100		3,667,500
		$	535,403,942	$	542,502,381
Realized Gain (Loss) on Investments [Table Text Block]		2014		2013			2012
	Proceeds from sales of securities available-for-sale	$	47,315,935	$	47,513,022		$	23,017,275
	Gross realized gains on securities available-for-sale		1,263,600		1,152,961			648,851
	Gross realized losses on securities available-for-sale		152,647		150,041			2,096
	Tax provision applicable to net realized gains on securities available-for-sale		414,000		374,000			241,000
Schedule of Unrealized Loss on Investments [Table Text Block]	2014:00:00	Less than 12 Months					12 Months or More						Total
		Estimated		Gross			Estimated			Gross			Estimated		Gross
		Fair		Unrealized			Fair			Unrealized			Fair		Unrealized
		Value		Losses			Value			Losses			Value		Losses
	Securities available for sale:
	U.S. government agencies	$	14,015,923	$	(64,469	)	$	17,523,097		$	(447,975	)	$	31,539,020	$	(512,444	)
	U.S. government mortgage-backed securities		6,933,655		(20,283	)		16,122,600			(87,358	)		23,056,255		(107,641	)
	State and political subdivisions		45,617,514		(251,788	)		24,880,063			(397,220	)		70,497,577		(649,008	)
	Corporate bonds		8,936,658		(72,679	)		20,724,453			(838,508	)		29,661,111		(911,187	)
		$	75,503,750	$	(409,219	)	$	79,250,213		$	(1,771,061	)	$	154,753,963	$	(2,180,280	)
	2013:00:00	Less than 12 Months					12 Months or More						Total
		Estimated		Gross			Estimated			Gross			Estimated		Gross
		Fair		Unrealized			Fair			Unrealized			Fair		Unrealized
		Value		Losses			Value			Losses			Value		Losses
	Securities available for sale:
	U.S. government agencies	$	31,806,447	$	(1,508,155	)	$	-		$	-		$	31,806,447	$	(1,508,155	)
	U.S. government mortgage-backed securities		71,326,568		(1,479,321	)		2,771,874			(82,602	)		74,098,442		(1,561,923	)
	State and political subdivisions		99,974,091		(3,028,851	)		15,438,484			(980,380	)		115,412,575		(4,009,231	)
	Corporate bonds		21,382,087		(1,150,658	)		8,798,047			(1,040,743	)		30,180,134		(2,191,401	)
		$	224,489,193	$	(7,166,985	)	$	27,008,405		$	(2,103,725	)	$	251,497,598	$	(9,270,710	)

Note_5_Loans_Receivable_and_Cr1

Note 5 - Loans Receivable and Credit Disclosures (Tables)	12 Months Ended
	Dec. 31, 2014
Receivables [Abstract]
Schedule of Composition of Loans Receivable [Table Text Block]		2014			2013
	Real estate - construction	$	36,015,565		$	23,927,507
	Real estate - 1 to 4 family residential		122,776,915			108,289,500
	Real estate - commercial		257,053,864			206,111,559
	Real estate - agricultural		57,449,353			53,833,997
	Commercial		92,703,021			86,822,960
	Agricultural		85,608,954			81,326,382
	Consumer and other		15,763,369			12,795,324
			667,371,041			573,107,229
	Less:
	Allowance for loan losses		(8,838,181	)		(8,571,813	)
	Deferred loan fees		(91,862	)		(33,869	)
		$	658,440,998		$	564,501,547
Schedule of Allowance for Loan Losses [Table Text Block]		2014			2013			2012
	Balance, beginning	$	8,571,813		$	7,772,571		$	7,905,316
	Provision for loan losses		429,140			786,390			22,277
	Recoveries of loans charged-off		82,409			130,239			77,689
	Loans charged-off		(245,181	)		(117,387	)		(232,711	)
	Balance, ending	$	8,838,181		$	8,571,813		$	7,772,571
Allowance for Credit Losses on Financing Receivables [Table Text Block]	2014:00:00				1-4 Family
		Construction			Residential			Commercial			Agricultural							Consumer
		Real Estate			Real Estate			Real Estate			Real Estate		Commercial			Agricultural		and Other			Total
	Balance, beginning	$	392		$	1,523		$	3,230		$	686	$	1,435		$	1,165	$	141		$	8,572
	Provision (credit) for loan losses		78			258			(16	)		51		(190	)		147		101			429
	Recoveries of loans charged-off		25			18			-			-		19			-		20			82
	Loans charged-off		-			(151	)		-			-		(17	)		-		(77	)		(245	)
	Balance, ending	$	495		$	1,648		$	3,214		$	737	$	1,247		$	1,312	$	185		$	8,838
	2013:00:00				1-4 Family
		Construction			Residential			Commercial			Agricultural							Consumer
		Real Estate			Real Estate			Real Estate			Real Estate		Commercial			Agricultural		and Other			Total
	Balance, beginning	$	375		$	1,433		$	2,859		$	523	$	1,461		$	945	$	177		$	7,773
	Provision (credit) for loan losses		17			117			320			163		(29	)		220		(22	)		786
	Recoveries of loans charged-off		-			54			51			-		3			-		22			130
	Loans charged-off		-			(81	)		-			-		-			-		(36	)		(117	)
	Balance, ending	$	392		$	1,523		$	3,230		$	686	$	1,435		$	1,165	$	141		$	8,572
	2012:00:00				1-4 Family
		Construction			Residential			Commercial			Agricultural							Consumer
		Real Estate			Real Estate			Real Estate			Real Estate		Commercial			Agricultural		and Other			Total
	Balance, beginning	$	793		$	1,402		$	2,859		$	501	$	1,352		$	764	$	234		$	7,905
	Provision (credit) for loan losses		(418	)		182			(4	)		22		115			181		(56	)		22
	Recoveries of loans charged-off		-			3			4			-		24			-		47			78
	Loans charged-off		-			(154	)		-			-		(30	)		-		(48	)		(232	)
	Balance, ending	$	375		$	1,433		$	2,859		$	523	$	1,461		$	945	$	177		$	7,773
Allowance for Loan Losses Disaggregated on Basis of Impairment Analysis Method [Table Text Block]	2014:00:00				1-4 Family
		Construction			Residential			Commercial			Agricultural							Consumer
		Real Estate			Real Estate			Real Estate			Real Estate		Commercial			Agricultural		and Other			Total
	Ending balance: Individually evaluated for impairment	$	-		$	244		$	33		$	-	$	60		$	-	$	-		$	337
	Ending balance: Collectively evaluated for impairment		495			1,404			3,181			737		1,187			1,312		185			8,501
	Ending balance	$	495		$	1,648		$	3,214		$	737	$	1,247		$	1,312	$	185		$	8,838
	2013:00:00				1-4 Family
		Construction			Residential			Commercial			Agricultural							Consumer
		Real Estate			Real Estate			Real Estate			Real Estate		Commercial			Agricultural		and Other			Total
	Ending balance: Individually evaluated for impairment	$	-		$	122		$	20		$	-	$	330		$	5	$	-		$	477
	Ending balance: Collectively evaluated for impairment		392			1,401			3,210			686		1,105			1,160		141			8,095
	Ending balance	$	392		$	1,523		$	3,230		$	686	$	1,435		$	1,165	$	141		$	8,572
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]	2014:00:00				1-4 Family
		Construction			Residential			Commercial			Agricultural							Consumer
		Real Estate			Real Estate			Real Estate			Real Estate		Commercial			Agricultural		and Other			Total
	Ending balance: Individually evaluated for impairment	$	195		$	811		$	833		$	-	$	540		$	19	$	9		$	2,407
	Ending balance: Collectively evaluated for impairment		35,821			121,966			256,221			57,449		92,163			85,590		15,754			664,964
	Ending balance	$	36,016		$	122,777		$	257,054		$	57,449	$	92,703		$	85,609	$	15,763		$	667,371
	2013:00:00				1-4 Family
		Construction			Residential			Commercial			Agricultural							Consumer
		Real Estate			Real Estate			Real Estate			Real Estate		Commercial			Agricultural		and Other			Total
	Ending balance: Individually evaluated for impairment	$	510		$	784		$	526		$	-	$	816		$	24	$	61		$	2,721
	Ending balance: Collectively evaluated for impairment		23,418			107,505			205,586			53,834		86,007			81,302		12,734			570,386
	Ending balance	$	23,928		$	108,289		$	206,112		$	53,834	$	86,823		$	81,326	$	12,795		$	573,107
Financing Receivable Credit Quality Indicators [Table Text Block]	2014:00:00	Construction			Commercial			Agricultural
		Real Estate			Real Estate			Real Estate			Commercial		Agricultural			Total
	Pass	$	30,055,000		$	223,775,000		$	51,024,000		$	79,117,000	$	78,387,000		$	462,358,000
	Watch		3,893,000			18,617,000			6,275,000			10,086,000		6,827,000			45,698,000
	Special Mention		-			1,296,000			88,000			585,000		-			1,969,000
	Substandard		1,873,000			12,532,000			62,000			2,376,000		395,000			17,238,000
	Substandard-Impaired		195,000			834,000			-			539,000		-			1,568,000
		$	36,016,000		$	257,054,000		$	57,449,000		$	92,703,000	$	85,609,000		$	528,831,000
	2013:00:00	Construction			Commercial			Agricultural
		Real Estate			Real Estate			Real Estate			Commercial		Agricultural			Total
	Pass	$	16,887,000		$	169,659,000		$	51,486,000		$	73,073,000	$	78,476,000		$	389,581,000
	Watch		3,545,000			20,267,000			2,051,000			10,717,000		1,963,000			38,543,000
	Special Mention		-			798,000			-			796,000		9,000			1,603,000
	Substandard		2,986,000			14,862,000			297,000			1,421,000		854,000			20,420,000
	Substandard-Impaired		510,000			526,000			-			816,000		24,000			1,876,000
		$	23,928,000		$	206,112,000		$	53,834,000		$	86,823,000	$	81,326,000		$	452,023,000
Credit Risk Profile Based on Payment Activity on Disaggregated Basis [Table Text Block]	2014:00:00	1-4 Family
		Residential			Consumer
		Real Estate			and Other			Total
	Performing	$	121,928,000		$	15,756,000		$	137,684,000
	Non-performing		849,000			7,000			856,000
		$	122,777,000		$	15,763,000		$	138,540,000
	2013:00:00	1-4 Family
		Residential			Consumer
		Real Estate			and Other			Total
	Performing	$	107,666,000		$	12,740,000		$	120,406,000
	Non-performing		623,000			55,000			678,000
		$	108,289,000		$	12,795,000		$	121,084,000
Impaired Financing Receivables [Table Text Block]	2014:00:00				Unpaid						Average		Interest
		Recorded			Principal			Related			Recorded		Income
		Investment			Balance			Allowance			Investment		Recognized
	With no specific reserve recorded:
	Real estate - construction	$	195,000		$	346,000		$	-		$	408,000	$	152,000
	Real estate - 1 to 4 family residential		24,000			29,000			-			188,000		12,000
	Real estate - commercial		675,000			1,204,000			-			389,000		207,000
	Real estate - agricultural		-			-			-			-		-
	Commercial		456,000			535,000			-			218,000		-
	Agricultural		19,000			19,000			-			19,000		-
	Consumer and other		9,000			6,000			-			20,000		-
	Total loans with no specific reserve:		1,378,000			2,139,000			-			1,242,000		371,000
	With an allowance recorded:
	Real estate - construction		-			-			-			-		-
	Real estate - 1 to 4 family residential		787,000			903,000			244,000			380,000		-
	Real estate - commercial		158,000			158,000			33,000			114,000		4,000
	Real estate - agricultural		-			-			-			-		-
	Commercial		84,000			84,000			60,000			432,000		78,000
	Agricultural		-			-			-			3,000		-
	Consumer and other		-			-			-			2,000		-
	Total loans with specific reserve:		1,029,000			1,145,000			337,000			931,000		82,000
	Total
	Real estate - construction		195,000			346,000			-			408,000		152,000
	Real estate - 1 to 4 family residential		811,000			932,000			244,000			568,000		12,000
	Real estate - commercial		833,000			1,362,000			33,000			503,000		211,000
	Real estate - agricultural		-			-			-			-		-
	Commercial		540,000			619,000			60,000			650,000		78,000
	Agricultural		19,000			19,000			-			22,000		-
	Consumer and other		9,000			6,000			-			22,000		-
		$	2,407,000		$	3,284,000		$	337,000		$	2,173,000	$	453,000
	2013:00:00				Unpaid						Average		Interest
		Recorded			Principal			Related			Recorded		Income
		Investment			Balance			Allowance			Investment		Recognized
	With no specific reserve recorded:
	Real estate - construction	$	510,000		$	510,000		$	-		$	837,000	$	25,000
	Real estate - 1 to 4 family residential		483,000			483,000			-			551,000		8,000
	Real estate - commercial		480,000			480,000			-			1,047,000		209,000
	Real estate - agricultural		-			-			-			-		-
	Commercial		43,000			43,000			-			55,000		12,000
	Agricultural		19,000			19,000			-			4,000		-
	Consumer and other		61,000			61,000			-			16,000		-
	Total loans with no specific reserve:		1,596,000			1,596,000			-			2,510,000		254,000
	With an allowance recorded:
	Real estate - construction		-			-			-			250,000		93,000
	Real estate - 1 to 4 family residential		301,000			301,000			122,000			396,000		-
	Real estate - commercial		46,000			46,000			20,000			927,000		-
	Real estate - agricultural		-			-			-			-		-
	Commercial		773,000			773,000			330,000			750,000		-
	Agricultural		5,000			5,000			5,000			5,000		-
	Consumer and other		-			-			-			-		-
	Total loans with specific reserve:		1,125,000			1,125,000			477,000			2,328,000		93,000
	Total
	Real estate - construction		510,000			510,000			-			1,087,000		118,000
	Real estate - 1 to 4 family residential		784,000			784,000			122,000			947,000		8,000
	Real estate - commercial		526,000			526,000			20,000			1,974,000		209,000
	Real estate - agricultural		-			-			-			-		-
	Commercial		816,000			816,000			330,000			805,000		12,000
	Agricultural		24,000			24,000			5,000			9,000		-
	Consumer and other		61,000			61,000			-			16,000		-
		$	2,721,000		$	2,721,000		$	477,000		$	4,838,000	$	347,000
	2012:00:00				Unpaid						Average		Interest
		Recorded			Principal			Related			Recorded		Income
		Investment			Balance			Allowance			Investment		Recognized
	With no specific reserve recorded:
Real estate - construction	$	1,060,000		$	1,060,000		$	-		$	1,445,000	$	4,000
Real estate - 1 to 4 family residential		655,000			655,000			-			1,245,000		14,000
Real estate - commercial		1,381,000			1,381,000			-			892,000		5,000
Real estate - agricultural		-			-			-			-		-
Commercial		80,000			80,000			-			37,000		-
Agricultural		-			-			-			-		-
Consumer and other		4,000			4,000			-			1,000		-
Total loans with no specific reserve:		3,180,000			3,180,000			-			3,620,000		23,000
With an allowance recorded:
Real estate - construction		433,000			433,000			100,000			552,000		-
Real estate - 1 to 4 family residential		466,000			466,000			110,000			483,000		-
Real estate - commercial		1,899,000			1,899,000			86,000			1,854,000		-
Real estate - agricultural		-			-			-			-		-
Commercial		630,000			630,000			400,000			610,000		-
Agricultural		6,000			6,000			6,000			2,000		-
Consumer and other		-			-			-			2,000		-
Total loans with specific reserve:		3,434,000			3,434,000			702,000			3,503,000		-
Total
Real estate - construction		1,493,000			1,493,000			100,000			1,997,000		4,000
Real estate - 1 to 4 family residential		1,121,000			1,121,000			110,000			1,728,000		14,000
Real estate - commercial		3,280,000			3,280,000			86,000			2,746,000		5,000
Real estate - agricultural		-			-			-			-		-
Commercial		710,000			710,000			400,000			647,000		-
Agricultural		6,000			6,000			6,000			2,000		-
Consumer and other		4,000			4,000			-			3,000		-
	$	6,614,000		$	6,614,000		$	702,000		$	7,123,000	$	23,000
Troubled Debt Restructurings on Financing Receivables [Table Text Block]		2014									2013
					Pre-Modification			Post-Modification					Pre-Modification			Post-Modification
					Outstanding			Outstanding					Outstanding			Outstanding
		Number of			Recorded			Recorded			Number of		Recorded			Recorded
		Contracts			Investment			Investment			Contracts		Investment			Investment
	Real estate - construction		-		$	-		$	-			-	$	-		$	-
	Real estate - 1 to 4 family residential		1			25,000			25,000			-		-			-
	Real estate - commercial		3			384,000			384,000			-		-			-
	Real estate - agricultural		-			-			-			-		-			-
	Commercial		-			-			-			1		130,000			130,000
	Agricultural		1			19,000			19,000			-		-			-
	Consumer and other		1			6,000			6,000			1		46,000			46,000
			6		$	434,000		$	434,000			2	$	176,000		$	176,000
Past Due Financing Receivables [Table Text Block]	2014:00:00	30-89			90 Days											90 Days
		Days			or Greater			Total								or Greater
		Past Due			Past Due			Past Due			Current		Total			Accruing
	Real estate - construction	$	64,000		$	-		$	64,000		$	35,952,000	$	36,016,000		$	-
	Real estate - 1 to 4 family residential		888,000			57,000			945,000			121,832,000		122,777,000			36,000
	Real estate - commercial		467,000			45,000			512,000			256,542,000		257,054,000			-
	Real estate - agricultural		28,000			-			28,000			57,421,000		57,449,000			-
	Commercial		264,000			84,000			348,000			92,355,000		92,703,000			-
	Agricultural		-			-			-			85,609,000		85,609,000			-
	Consumer and other		63,000			-			63,000			15,700,000		15,763,000			-
		$	1,774,000		$	186,000		$	1,960,000		$	665,411,000	$	667,371,000		$	36,000
	2013:00:00	30-89			90 Days											90 Days
		Days			or Greater			Total								or Greater
		Past Due			Past Due			Past Due			Current		Total			Accruing
	Real estate - construction	$	-		$	-		$	-		$	23,928,000	$	23,928,000		$	-
	Real estate - 1 to 4 family residential		1,059,000			400,000			1,459,000			106,830,000		108,289,000			27,000
	Real estate - commercial		-			46,000			46,000			206,066,000		206,112,000			-
	Real estate - agricultural		-			-			-			53,834,000		53,834,000			-
	Commercial		88,000			375,000			463,000			86,360,000		86,823,000			-
	Agricultural		-			-			-			81,326,000		81,326,000			-
	Consumer and other		35,000			-			35,000			12,760,000		12,795,000			-
		$	1,182,000		$	821,000		$	2,003,000		$	571,104,000	$	573,107,000		$	27,000
Schedule of Loan Transactions With Related Parties [Table Text Block]		2014			2013
	Balance, beginning of year	$	7,911,436		$	8,762,305
	New loans		17,264,513			19,442,541
	Repayments		(16,837,127	)		(20,920,256	)
	Change in status		178,834			626,846
	Balance, end of year	$	8,517,656		$	7,911,436

Note_6_Bank_Premises_and_Equip1

Note 6 - Bank Premises and Equipment (Tables)	12 Months Ended
	Dec. 31, 2014
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment [Table Text Block]		2014		2013
	Land	$	3,849,144	$	2,462,563
	Buildings and improvements		17,470,675		16,149,479
	Furniture and equipment		5,879,852		5,435,234
			27,199,671		24,047,276
	Less accumulated depreciation		11,242,682		12,154,947
		$	15,956,989	$	11,892,329

Note_7_Other_Real_Estate_Owned1

Note 7 - Other Real Estate Owned (Tables)	12 Months Ended
	Dec. 31, 2014
Disclosure Text Block [Abstract]
Other Real Estate Owned Roll Forward [Table Text Block]		2014			2013
	Balance, beginning of year	$	8,861,107		$	9,910,825
	Transfer of loans		202,409			196,433
	Acquired		1,267,720			-
	Impairment		(1,744,366	)		(670,000	)
	Net proceeds from sale		(265,694	)		(626,596	)
	Gain on sale, net		95,036			50,445
	Other changes		19,673			-
	Balance, end of year	$	8,435,885		$	8,861,107
Other Real Estate, Roll Forward [Table Text Block]		2014			2013
	Construction and land development	$	5,384,955		$	6,750,503
	1 to 4 family residential houses		1,269,629			1,296,227
	Commercial real estate		1,781,301			814,377
		$	8,435,885		$	8,861,107

Note_9_Core_Deposit_Intangible1

Note 9 - Core Deposit Intangible Asset (Tables)	12 Months Ended
	Dec. 31, 2014
Disclosure Text Block [Abstract]
Finite-lived Intangible Assets Amortization Expense [Table Text Block]		2014						2013
		Gross			Accumulated			Gross			Accumulated
		Amount			Amortization			Amount			Amortization
	Core deposit intangible asset	$	2,518,000		$	788,000		$	1,500,000		$	471,000
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]	2015	$	422,000
	2016		354,000
	2017		299,000
	2018		251,000
	2019		127,000
	After		277,000
		$	1,730,000
Schedule of Finite-Lived Intangible Assets [Table Text Block]		2014			2013			2012
	Beginning core deposit intangible, net	$	1,029,000		$	1,303,000		$	-
	Purchases		1,018,000			-			1,500,000
	Amortization		(317,000	)		(274,000	)		(197,000	)
	Ending core deposit intangible, net	$	1,730,000		$	1,029,000		$	1,303,000

Note_10_Deposits_Tables

Note 10 - Deposits (Tables)	12 Months Ended
	Dec. 31, 2014
Disclosure Text Block [Abstract]
Schedule of Maturities of Time Deposits [Table Text Block]	2015	$	140,711,485
	2016		51,755,767
	2017		29,342,497
	2018		12,431,942
	2019		8,873,979
		$	243,115,670
Schedule of Interest Expense On Deposits [Table Text Block]		2014		2013		2012
	NOW accounts	$	529,390	$	593,210	$	599,992
	Savings and money market		612,632		582,502		553,142
	Time deposits		2,243,077		2,686,001		3,319,203
		$	3,385,099	$	3,861,713	$	4,472,337

Note_11_Borrowings_Tables

Note 11 - Borrowings (Tables)	12 Months Ended
	Dec. 31, 2014
Debt Disclosure [Abstract]
Schedule of Maturities of Federal Home Loan Bank Advances and Long-term Debt [Table Text Block]				Weighted
				Average
		Amount		Interest Rate		Features
	FHLB advances maturing in:
	2016	$	1,000,000		0.75%
	2017		1,000,000		1.08%
	2018		11,500,000		2.94%	Includes $4,500,000 callable in February 2015; $7,000,000 callable in March 2015
	After 2018		967,737		3.50%	15 year amortizing and puttable in 2015
	Total FHLB advances	$	14,467,737		2.69%
	Other borrowings maturing in:
	2018	$	18,000,000		3.45%	$13,000,000 term repurchase agreements callable quarterly in 2015 and thereafter; $5,000,000 financing agreements with maturitiy date of January 2018
	2022		5,000,000		4.12%	$5,000,000 financing agreements with a maturity date of January 2022
	Total other borrowings	$	23,000,000		3.59%
	Total FHLB and other borrowings	$	37,467,737		3.24%

Note_13_Income_Taxes_Tables

Note 13 - Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]		2014			2013			2012
	Federal:
	Current	$	4,568,497		$	4,104,278		$	3,975,247
	Deferred		16,322			(392,690	)		(184,093	)
			4,584,819			3,711,588			3,791,154
	State:
	Current		1,014,567			973,694			954,724
	Deferred		16,133			(27,360	)		1,765
			1,030,700			946,334			956,489
	Income tax expense	$	5,615,519		$	4,657,922		$	4,747,643
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]		2014			2013			2012
	Income taxes at 35% federal tax rate	$	7,302,815		$	6,514,048		$	6,625,483
	Increase (decrease) resulting from:
	Tax-exempt interest and dividends		(2,213,701	)		(2,399,516	)		(2,419,917	)
	State taxes, net of federal tax benefit		699,960			624,928			610,450
	Other		(173,555	)		(81,538	)		(68,373	)
	Total income tax expense	$	5,615,519		$	4,657,922		$	4,747,643
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]		2014			2013
	Deferred tax assets:
	Allowance for loan losses	$	3,134,667		$	2,961,646
	Other real estate owned		2,393,507			1,756,144
	Other-than-temporary impairment on securities		96,924			96,924
	Accrued vacation		239,949			207,677
	Other deferred tax assets		786,818			887,205
			6,651,865			5,909,596
	Deferred tax liabilities:
	Net unrealized gains on securities available-for-sale		(2,626,423	)		(264,952	)
	Bank premises and equipment		(971,570	)		(381,903	)
	Other deferred tax liabilities		(420,695	)		(235,638	)
			(4,018,688	)		(882,493	)
	Net deferred tax asset	$	2,633,177		$	5,027,103

Note_14_Commitments_Contingenc1

Note 14 - Commitments, Contingencies and Concentrations of Credit Risk (Tables)	12 Months Ended
	Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract]
Schedule of Fair Value, Off-balance Sheet Risks [Table Text Block]		2014		2013
	Commitments to extend credit	$	159,527,000	$	115,278,000
	Standby letters of credit		6,526,000		3,135,000
		$	166,053,000	$	118,413,000

Note_15_Regulatory_Matters_Tab

Note 15 - Regulatory Matters (Tables)	12 Months Ended
	Dec. 31, 2014
Disclosure Text Block [Abstract]
Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table Text Block]												To Be Well
												Capitalized Under
							For Capital					Prompt Corrective
		Actual					Adequacy Purposes					Action Provisions
		Amount		Ratio			Amount		Ratio			Amount		Ratio
	As of December 31, 2014:
	Total capital (to risk- weighted assets):
	Consolidated	$	151,146		16.6	%	$	72,879		8	%		N/A		N/A
	Boone Bank & Trust		13,948		15.7			7,123		8		$	8,904		10	%
	First National Bank		69,174		14.7			37,568		8			46,960		10
	Reliance State Bank		21,727		13.2			13,166		8			16,457		10
	State Bank & Trust		18,708		15.8			9,485		8			11,856		10
	United Bank & Trust		14,089		21.3			5,295		8			6,618		10
	Tier 1 capital (to risk- weighted assets):
	Consolidated	$	141,739		15.6	%	$	36,440		4	%		N/A		N/A
	Boone Bank & Trust		13,084		14.7			3,562		4		$	5,342		6	%
	First National Bank		65,112		13.9			18,784		4			28,176		6
	Reliance State Bank		19,966		12.1			6,583		4			9,874		6
	State Bank & Trust		17,224		14.5			4,742		4			7,113		6
	United Bank & Trust		13,313		20.1			2,647		4			3,971		6
	Tier 1 capital (to average- weighted assets):
	Consolidated	$	141,739		11	%	$	51,604		4	%		N/A		N/A
	Boone Bank & Trust		13,084		9.8			5,325		4		$	6,656		5	%
	First National Bank		65,112		9.4			27,671		4			34,589		5
	Reliance State Bank		19,966		9.6			8,321		4			10,402		5
	State Bank & Trust		17,224		10.9			6,318		4			7,898		5
	United Bank & Trust		13,313		12.3			4,315		4			5,394		5
												To Be Well
												Capitalized Under
							For Capital					Prompt Corrective
		Actual					Adequacy Purposes					Action Provisions
		Amount		Ratio			Amount		Ratio			Amount		Ratio
	As of December 31, 2013:
	Total capital (to risk- weighted assets):
	Consolidated	$	143,976		17.2	%	$	67,068		8	%		N/A		N/A
	Boone Bank & Trust		13,457		16.1			6,690		8		$	8,362		10	%
	First National Bank		67,231		16.4			32,838		8			41,048		10
	Reliance State Bank		19,616		12.2			12,916		8			16,145		10
	State Bank & Trust		17,734		16			8,876		8			11,096		10
	United Bank & Trust		13,677		19.6			5,597		8			6,996		10
	Tier 1 capital (to risk- weighted assets):
	Consolidated	$	135,024		16.1	%	$	33,534		4	%		N/A		N/A
	Boone Bank & Trust		12,670		15.2			3,345		4		$	5,017		6	%
	First National Bank		63,299		15.4			16,419		4			24,629		6
	Reliance State Bank		18,130		11.2			6,458		4			9,687		6
	State Bank & Trust		16,344		14.7			4,438		4			6,657		6
	United Bank & Trust		12,802		18.3			2,798		4			4,198		6
	Tier 1 capital (to average- weighted assets):
	Consolidated	$	135,024		11	%	$	49,173		4	%		N/A		N/A
	Boone Bank & Trust		12,670		9.8			5,158		4		$	6,447		5	%
	First National Bank		63,299		10			25,178		4			31,472		5
	Reliance State Bank		18,130		8.6			8,452		4			10,565		5
	State Bank & Trust		16,344		10.4			6,282		4			7,852		5
	United Bank & Trust		12,802		11.7			4,378		4			5,472		5

Note_16_Fair_Value_Measurement1

Note 16 - Fair Value Measurements (Tables)	12 Months Ended
	Dec. 31, 2014
Fair Value Disclosures [Abstract]
Fair Value, Assets Measured on Recurring Basis [Table Text Block]	Description		Total				Level 1				Level 2			Level 3
	2014
	U.S. government treasuries		$	1,448,000			$	1,448,000			$	-		$	-
	U.S. government agencies			87,307,000				-				87,307,000			-
	U.S. government mortgage-backed securities			120,985,000				-				120,985,000			-
	State and political subdivisions			281,776,000				-				281,776,000			-
	Corporate bonds			47,319,000				-				47,319,000			-
	Equity securities, common stock			758,000				758,000				-			-
	Equity securities, other			2,909,000				-				2,909,000			-
			$	542,502,000			$	2,206,000			$	540,296,000		$	-
	2013
	U.S. government agencies		$	61,178,000			$	-			$	61,178,000		$	-
	U.S. government mortgage-backed securities			155,142,000				-				155,142,000			-
	State and political subdivisions			315,224,000				-				315,224,000			-
	Corporate bonds			44,752,000				-				44,752,000			-
	Equity securities, common stock			841,000				841,000				-			-
	Equity securities, other			2,902,000				-				2,902,000			-
			$	580,039,000			$	841,000			$	579,198,000		$	-
Fair Value Measurements, Nonrecurring [Table Text Block]	Description		Total				Level 1				Level 2			Level 3
	2014
	Loans		$	692,000			$	-			$	-		$	692,000
	Other real estate owned			8,436,000				-				-			8,436,000
	Total		$	9,128,000			$	-			$	-		$	9,128,000
	2013
	Loans		$	648,000			$	-			$	-		$	648,000
	Other real estate owned			8,861,000				-				-			8,861,000
	Total		$	9,509,000			$	-			$	-		$	9,509,000
Fair Value Inputs, Assets, Quantitative Information [Table Text Block]			2014
			Fair Value			Valuation	Range of Unobservable		Range
						Techniques	Inputs		(Average)
	Impaired Loans		$	692,000		Evaluation of collateral	Estimation of value			NM*
	Other real estate owned		$	8,436,000		Appraisal	Appraisal adjustment			4%-10%	-7%
			2013
			Fair Value			Valuation	Range of Unobservable		Range
						Techniques	Inputs		(Average)
	Impaired Loans		$	648,000		Evaluation of collateral	Estimation of value			NM*
	Other real estate owned		$	8,861,000		Appraisal	Appraisal adjustment			6%-10%	-8%
Fair Value, by Balance Sheet Grouping [Table Text Block]				2014								2013
		Fair Value						Estimated							Estimated
		Hierarchy		Carrying				Fair				Carrying			Fair
		Level		Amount				Value				Amount			Value
	Financial assets:
	Cash and due from banks	Level 1		$	23,730,257			$	23,730,000			$	24,270,031		$	24,270,000
	Federal funds sold	Level 1			6,000				6,000				-			-
	Interest bearing deposits	Level 1			31,463,382				31,463,000				23,628,117			23,628,000
	Securities available-for-sale	See previous table			542,502,381				542,502,000				580,039,080			580,039,000
	Loans receivable, net	Level 2			658,440,998				656,896,000				564,501,547			562,073,000
	Loans held for sale	Level 2			704,850				705,000				295,618			296,000
	Accrued income receivable	Level 1			7,471,023				7,471,000				7,437,673			7,438,000
	Financial liabilities:
	Deposits	Level 2		$	1,052,123,257			$	1,052,082,000			$	1,011,803,178		$	1,014,150,000
	Securities sold under agreements to repurchase and federal funds purchased	Level 1			51,265,011				51,265,000				39,616,644			39,617,000
	FHLB advances	Level 2			14,467,737				15,281,000				14,540,526			15,441,000
	Other borrowings	Level 2			23,000,000				24,339,000				20,000,000			22,033,000
	Accrued interest payable	Level 1			536,370				536,000				594,223			594,000

Note_18_Ames_National_Corporat1

Note 18 - Ames National Corporation (Parent Company Only) Financial Statements (Tables)	12 Months Ended
	Dec. 31, 2014
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
Condensed Balance Sheet [Table Text Block]		2014			2013
	ASSETS
	Cash and due from banks	$	29,972		$	24,591
	Interest bearing deposits in banks		7,615,497			8,373,009
	Securities available-for-sale		758,100			840,900
	Investment in bank subsidiaries		141,553,283			130,167,386
	Loans receivable, net		3,252,197			3,348,973
	Premises and equipment, net		3,180,973			533,513
	Accrued income receivable		9,435			17,747
	Deferred income taxes		88,092			477,256
	Other assets		242,417			99,930
	Total assets	$	156,729,966		$	143,883,305
	LIABILITIES
	Dividends payable	$	1,675,964		$	1,489,746
	Accrued expenses and other liabilities		379,584			287,375
	Total liabilities		2,055,548			1,777,121
	STOCKHOLDERS' EQUITY
	Common stock		18,621,826			18,865,830
	Additional paid-in capital		20,878,728			22,651,222
	Retained earnings		110,701,847			102,154,498
	Accumulated other comprehensive income		4,472,017			451,132
	Treasury stock		-			(2,016,498	)
	Total stockholders' equity		154,674,418			142,106,184
	Total liabilities and stockholders' equity	$	156,729,966		$	143,883,305
Condensed Income Statement [Table Text Block]		2014			2013			2012
	Operating income:
	Equity in net income of bank subsidiaries	$	14,912,849		$	14,159,629		$	14,212,775
	Interest		207,230			267,928			505,918
	Dividends		26,400			22,800			20,400
	Rental income		121,441			117,303			118,545
	Gain on the sale of premises and equipment		1,256,924			-			-
	Other income		1,525,000			1,487,581			1,364,000
	Securities (losses), net		-			-			(83,180	)
			18,049,844			16,055,241			16,138,458
	Credit for loan losses		-			(77,000	)		(224,000	)
	Operating income after credit for loan losses		18,049,844			16,132,241			16,362,458
	Operating expenses		2,609,937			2,313,897			2,208,650
	Income before income taxes		15,439,907			13,818,344			14,153,808
	Income tax expense (benefit)		188,700			(135,300	)		(28,500	)
	Net income	$	15,251,207		$	13,953,644		$	14,182,308
Condensed Cash Flow Statement [Table Text Block]		2014			2013			2012
	CASH FLOWS FROM OPERATING ACTIVITIES
	Net income	$	15,251,207		$	13,953,644		$	14,182,308
	Adjustments to reconcile net income to net cash provided by operating activities:
	Depreciation		63,020			22,297			39,116
	Credit for loan losses		-			(77,000	)		(224,000	)
	Amortization, net		-			-			52,200
	Provision (credit) for deferred income taxes		419,800			(11,879	)		47,138
	Securities (gains), net		-			-			(176,671	)
	Other-than-temporary impairment of securities available-for-sale		-			-			259,851
	Gain on sale of premises and equipment		(1,256,924	)		-			-
	Equity in net income of bank subsidiaries		(14,912,848	)		(14,159,629	)		(14,212,775	)
	Dividends received from bank subsidiaries		7,600,000			7,200,000			8,428,000
	Decrease in accrued income receivable		8,312			12,243			52,430
	(Increase) decrease in other assets		(142,487	)		(84,930	)		100,000
	Increase in accrued expense and other liabilities		92,209			28,440			81,958
	Net cash provided by operating activities		7,122,289			6,883,186			8,629,555
	CASH FLOWS FROM INVESTING ACTIVITIES
	Proceeds from sale of securities available-for-sale		-			-			3,030,867
	Proceeds from maturities and calls of securities available-for-sale		-			-			416,002
	(Increase) decrease in interest bearing deposits in banks		757,512			(5,377,200	)		1,850,388
	(Increase) decrease in loans		96,776			4,363,136			(487,821	)
	Proceeds from sale of bank premises and equipment		1,746,444			-			-
	Purchase of bank premises and equipment		(3,200,000	)		(9,854	)		(29,226	)
	Investment in bank subsidiaries		-			-			(8,017,613	)
	Net cash used in investing activities		(599,268	)		(1,023,918	)		(3,237,403	)
	CASH FLOWS FROM FINANCING ACTIVITIES
	Dividends paid		(6,517,640	)		(5,865,866	)		(5,400,329	)
	Net cash used in financing activities		(6,517,640	)		(5,865,866	)		(5,400,329	)
	Net increase (decrease) in cash and cash equivalents		5,381			(6,598	)		(8,177	)
	CASH AND DUE FROM BANKS
	Beginning		24,591			31,189			39,366
	Ending	$	29,972		$	24,591		$	31,189
	SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION
	Cash receipts for income taxes	$	85,362		$	27,089		$	149,519

Note_19_Selected_Quarterly_Fin1

Note 19 - Selected Quarterly Financial Data (Unaudited) (Tables)	12 Months Ended
	Dec. 31, 2014
Quarterly Financial Information Disclosure [Abstract]
Schedule of Quarterly Financial Information [Table Text Block]		2014
		31-Mar		30-Jun		30-Sep		31-Dec
	Total interest income	$	9,920,281	$	10,145,907	$	10,120,151	$	10,778,012
	Total interest expense		1,186,496		1,166,552		1,102,532		1,091,521
	Net interest income		8,733,785		8,979,355		9,017,619		9,686,491
	Provision for loan losses		39,231		35,644		55,145		299,120
	Net interest income after provision for loan losses		8,694,554		8,943,711		8,962,474		9,387,371
	Noninterest income		2,945,784		1,733,972		1,828,690		2,743,633
	Noninterest expense		5,329,102		5,409,107		5,666,422		7,968,832
	Income before income taxes		6,311,236		5,268,576		5,124,742		4,162,172
	Income tax expense		1,785,145		1,413,653		1,393,256		1,023,465
	Net income	$	4,526,091	$	3,854,923	$	3,731,486	$	3,138,707
	Basic and diluted earnings per common share	$	0.49	$	0.41	$	0.4	$	0.34
		2013
		31-Mar		30-Jun		30-Sep		31-Dec
	Total interest income	$	9,376,641	$	9,401,263	$	9,750,476	$	9,905,433
	Total interest expense		1,291,751		1,294,540		1,239,335		1,249,137
	Net interest income		8,084,890		8,106,723		8,511,141		8,656,296
	Provision for loan losses		13,574		60,000		92,388		620,428
	Net interest income after provision for loan losses		8,071,316		8,046,723		8,418,753		8,035,868
	Noninterest income		1,842,968		2,089,020		1,819,733		1,966,057
	Noninterest expense		5,119,096		5,838,189		5,230,503		5,491,084
	Income before income taxes		4,795,188		4,297,554		5,007,983		4,510,841
	Income tax expense		1,209,254		1,018,858		1,295,916		1,133,894
	Net income	$	3,585,934	$	3,278,696	$	3,712,067	$	3,376,947
	Basic and diluted earnings per common share	$	0.39	$	0.35	$	0.4	$	0.36

Note_1_Summary_of_Significant_2

Note 1 - Summary of Significant Accounting Policies (Details)	9 Months Ended	12 Months Ended
	Sep. 30, 2014	Dec. 31, 2014
Note 1 - Summary of Significant Accounting Policies (Details) [Line Items]
Number of Operating Segments		1
Maximum Maturity Period of Highly Liquid Investments	90 years
Minimum Number of Days Past Due On Loans		90 years
Maximum Percentage of Likelihood of Tax Position Sustained Upon Examination		50.00%
Equipment [Member] | Minimum [Member]
Note 1 - Summary of Significant Accounting Policies (Details) [Line Items]
Property, Plant and Equipment, Useful Life		3 years
Equipment [Member] | Maximum [Member]
Note 1 - Summary of Significant Accounting Policies (Details) [Line Items]
Property, Plant and Equipment, Useful Life		7 years
Building [Member] | Minimum [Member]
Note 1 - Summary of Significant Accounting Policies (Details) [Line Items]
Property, Plant and Equipment, Useful Life		15 years
Building [Member] | Maximum [Member]
Note 1 - Summary of Significant Accounting Policies (Details) [Line Items]
Property, Plant and Equipment, Useful Life		39 years

Note_1_Summary_of_Significant_3

Note 1 - Summary of Significant Accounting Policies (Details) - Basic Earnings Per Share (EPS) (USD $)	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Basic earning per share computation:
Net income	$3,138,707	$3,731,486	$3,854,923	$4,526,091	$3,376,947	$3,712,067	$3,278,696	$3,585,934	$15,251,207	$13,953,644	$14,182,308
Weighted average common shares outstanding									9,310,913	9,310,913	9,310,913
Basic EPS									$1.64	$1.50	$1.52

Note_2_Branch_Acquisitions_Det

Note 2 - Branch Acquisitions (Details) (USD $)	0 Months Ended
	Aug. 29, 2014	Apr. 27, 2012	Dec. 31, 2014	Dec. 31, 2013
Note 2 - Branch Acquisitions (Details) [Line Items]
Goodwill			$6,732,216	$5,600,749
Core Deposits [Member] | First Bank Branches [Member]
Note 2 - Branch Acquisitions (Details) [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	1,018,000
Core Deposits [Member] | Liberty Bank Offices [Member]
Note 2 - Branch Acquisitions (Details) [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill		1,500,000
First Bank Branches [Member]
Note 2 - Branch Acquisitions (Details) [Line Items]
Number of Businesses Acquired	3
Payments to Acquire Businesses, Gross	4,100,000
Goodwill	1,131,000
Financing Receivable, Acquired with Deteriorated Credit Quality	1,507,000
Business Combination, Acquired Receivables, Gross Contractual Amount	45,584,000
Business Combination, Assumed Liabilities, Gross Contractual Amount	81,841,000
Liberty Bank Offices [Member]
Note 2 - Branch Acquisitions (Details) [Line Items]
Number of Businesses Acquired		2
Payments to Acquire Businesses, Gross		5,400,000
Goodwill		5,601,000
Business Combination, Acquired Receivables, Gross Contractual Amount		46,972,000
Business Combination, Assumed Liabilities, Gross Contractual Amount		$98,109,000

Note_2_Branch_Acquisitions_Det1

Note 2 - Branch Acquisitions (Details) - Branch Acquisition (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2012	Dec. 31, 2013
Business Acquisition [Line Items]
Goodwill	$6,732,216		$5,600,749
Loans Receivable [Member] | First Bank and Liberty [Member]
Business Acquisition [Line Items]
Acquired receivables	44,620,021	46,103,022
Accrued Interest Receivable [Member] | First Bank and Liberty [Member]
Business Acquisition [Line Items]
Acquired receivables	230,332	514,760
Core Deposits [Member] | First Bank and Liberty [Member]
Business Acquisition [Line Items]
Core deposit intangible asset	1,018,000	1,500,000
First Bank and Liberty [Member]
Business Acquisition [Line Items]
Cash consideration transferred	4,147,680	5,400,000
Cash and due from banks	20,576,661	49,703,137
Interest bearing deposits in financial institutions	5,719,000
Securities available-for-sale	10,602,454
Bank premises and equipment	3,864,900	864,500
Other real estate owned	1,267,720
Other assets	748,511
Deposits	-81,962,650	-98,766,558
Securities sold under agreements to repurchase	-2,815,297
Accrued interest payable and other liabilities	-853,439	-119,610
Total identifiable net assets (liabilities)	3,016,213	-200,749
Goodwill	$1,131,467	$5,600,749

Note_2_Branch_Acquisitions_Det2

Note 2 - Branch Acquisitions (Details) - Acquired Loans (First Bank Branches [Member], USD $)	Aug. 29, 2014
Note 2 - Branch Acquisitions (Details) - Acquired Loans [Line Items]
Loans Acquired	$45,584,000
Pass [Member]
Note 2 - Branch Acquisitions (Details) - Acquired Loans [Line Items]
Loans Acquired	29,840,000
Watch [Member]
Note 2 - Branch Acquisitions (Details) - Acquired Loans [Line Items]
Loans Acquired	6,659,000
Special Mention [Member]
Note 2 - Branch Acquisitions (Details) - Acquired Loans [Line Items]
Loans Acquired	1,478,000
Substandard [Member]
Note 2 - Branch Acquisitions (Details) - Acquired Loans [Line Items]
Loans Acquired	5,460,000
Deteriorated Credit [Member]
Note 2 - Branch Acquisitions (Details) - Acquired Loans [Line Items]
Loans Acquired	$2,147,000

Note_3_Concentrations_and_Rest1

Note 3 - Concentrations and Restrictions on Cash and Due from Banks and Interest Bearing Deposits in Financial Institutions (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Concentrations And Restrictions On Cash And Due From Banks And Interest Bearing Deposits In Financial Institutions [Abstract]
Cash Reserve Requirements	$6,376,000	$6,223,000
Deposits with Other Federal Home Loan Banks	$15,795,000

Note_4_Debt_and_Equity_Securit2

Note 4 - Debt and Equity Securities (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Investments, Debt and Equity Securities [Abstract]
Available-for-sale Securities Pledged as Collateral	$204,035,000	$189,116,000
Other than Temporary Impairment Losses, Investments, Available-for-sale Securities	0	0	259,851
Available-for-sale Securities, Gross Unrealized Loss	$2,180,280

Note_4_Debt_and_Equity_Securit3

Note 4 - Debt and Equity Securities (Details) - Securities Available-for-sale (USD $)	Dec. 31, 2014	Dec. 31, 2013
2014:00:00
Securities available-for-sale, amortized cost	$535,403,942	$579,322,997
Securities available-for-sale, gross unrealized gains	9,278,719	9,986,793
Securities available-for-sale, gross unrealize losses	-2,180,280	-9,270,710
Securities available-for-sale, fair value	542,502,381	580,039,080
US Treasury Securities [Member]
2014:00:00
Securities available-for-sale, amortized cost	1,431,392
Securities available-for-sale, gross unrealized gains	16,050
Securities available-for-sale, fair value	1,447,442
US Government Agencies Debt Securities [Member]
2014:00:00
Securities available-for-sale, amortized cost	86,997,445	61,569,302
Securities available-for-sale, gross unrealized gains	822,410	1,116,644
Securities available-for-sale, gross unrealize losses	-512,444	-1,508,155
Securities available-for-sale, fair value	87,307,411	61,177,791
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
2014:00:00
Securities available-for-sale, amortized cost	118,348,325	153,857,058
Securities available-for-sale, gross unrealized gains	2,744,305	2,846,821
Securities available-for-sale, gross unrealize losses	-107,641	-1,561,923
Securities available-for-sale, fair value	120,984,989	155,141,956
US States and Political Subdivisions Debt Securities [Member]
2014:00:00
Securities available-for-sale, amortized cost	277,328,201	314,177,458
Securities available-for-sale, gross unrealized gains	5,097,127	5,055,906
Securities available-for-sale, gross unrealize losses	-649,008	-4,009,231
Securities available-for-sale, fair value	281,776,320	315,224,133
Corporate Debt Securities [Member]
2014:00:00
Securities available-for-sale, amortized cost	47,759,479	46,186,879
Securities available-for-sale, gross unrealized gains	470,427	756,222
Securities available-for-sale, gross unrealize losses	-911,187	-2,191,401
Securities available-for-sale, fair value	47,318,719	44,751,700
Equity Securities, Financial Industry Common Stock [Member]
2014:00:00
Securities available-for-sale, amortized cost	629,700	629,700
Securities available-for-sale, gross unrealized gains	128,400	211,200
Securities available-for-sale, fair value	758,100	840,900
Equity Securities, Other [Member]
2014:00:00
Securities available-for-sale, amortized cost	2,909,400	2,902,600
Securities available-for-sale, fair value	$2,909,400	$2,902,600

Note_4_Debt_and_Equity_Securit4

Note 4 - Debt and Equity Securities (Details) - Debt Securities Available-for-sale (USD $)	Dec. 31, 2014	Dec. 31, 2013
Debt Securities Available-for-sale [Abstract]
Due in one year or less	$42,443,069
Due in one year or less	42,818,363
Due after one year through five years	292,052,292
Due after one year through five years	297,458,655
Due after five years through ten years	184,567,184
Due after five years through ten years	185,508,940
Due after ten years	12,802,297
Due after ten years	13,048,923
	531,864,842
	538,834,881
Equity securities	3,539,100
Equity securities	3,667,500
	535,403,942	579,322,997
	$542,502,381	$580,039,080

Note_4_Debt_and_Equity_Securit5

Note 4 - Debt and Equity Securities (Details) - Proceeds, Gains and Losses from Securities Available-for-sale (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Proceeds, Gains and Losses from Securities Available-for-sale [Abstract]
Proceeds from sales of securities available-for-sale	$47,315,935	$47,513,022	$23,017,275
Gross realized gains on securities available-for-sale	1,263,600	1,152,961	648,851
Gross realized losses on securities available-for-sale	152,647	150,041	2,096
Tax provision applicable to net realized gains on securities available-for-sale	$414,000	$374,000	$241,000

Note_4_Debt_and_Equity_Securit6

Note 4 - Debt and Equity Securities (Details) - Securities Available-for-sale Continuous Unrealized Loss Position (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Securities available for sale:
Securities available-for-sale, continuous unrealized loss position, less than 12 months, fair value	$75,503,750	$224,489,193
Securities available-for-sale, continuous unrealized loss position, less than 12 months, unrealized losses	-409,219	-7,166,985
Securities available-for-sale, continuous unrealized loss position, 12 months or more, fair value	79,250,213	27,008,405
Securities available-for-sale, continuous unrealized loss position, 12 months or more, unrealized losses	-1,771,061	-2,103,725
Securities available-for-sale, continuous unrealized loss position, fair value	154,753,963	251,497,598
Securities available-for-sale, continuous unrealized loss position, unrealized losses	-2,180,280	-9,270,710
US Government Agencies Debt Securities [Member]
Securities available for sale:
Securities available-for-sale, continuous unrealized loss position, less than 12 months, fair value	14,015,923	31,806,447
Securities available-for-sale, continuous unrealized loss position, less than 12 months, unrealized losses	-64,469	-1,508,155
Securities available-for-sale, continuous unrealized loss position, 12 months or more, fair value	17,523,097
Securities available-for-sale, continuous unrealized loss position, 12 months or more, unrealized losses	-447,975
Securities available-for-sale, continuous unrealized loss position, fair value	31,539,020	31,806,447
Securities available-for-sale, continuous unrealized loss position, unrealized losses	-512,444	-1,508,155
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Securities available for sale:
Securities available-for-sale, continuous unrealized loss position, less than 12 months, fair value	6,933,655	71,326,568
Securities available-for-sale, continuous unrealized loss position, less than 12 months, unrealized losses	-20,283	-1,479,321
Securities available-for-sale, continuous unrealized loss position, 12 months or more, fair value	16,122,600	2,771,874
Securities available-for-sale, continuous unrealized loss position, 12 months or more, unrealized losses	-87,358	-82,602
Securities available-for-sale, continuous unrealized loss position, fair value	23,056,255	74,098,442
Securities available-for-sale, continuous unrealized loss position, unrealized losses	-107,641	-1,561,923
US States and Political Subdivisions Debt Securities [Member]
Securities available for sale:
Securities available-for-sale, continuous unrealized loss position, less than 12 months, fair value	45,617,514	99,974,091
Securities available-for-sale, continuous unrealized loss position, less than 12 months, unrealized losses	-251,788	-3,028,851
Securities available-for-sale, continuous unrealized loss position, 12 months or more, fair value	24,880,063	15,438,484
Securities available-for-sale, continuous unrealized loss position, 12 months or more, unrealized losses	-397,220	-980,380
Securities available-for-sale, continuous unrealized loss position, fair value	70,497,577	115,412,575
Securities available-for-sale, continuous unrealized loss position, unrealized losses	-649,008	-4,009,231
Corporate Debt Securities [Member]
Securities available for sale:
Securities available-for-sale, continuous unrealized loss position, less than 12 months, fair value	8,936,658	21,382,087
Securities available-for-sale, continuous unrealized loss position, less than 12 months, unrealized losses	-72,679	-1,150,658
Securities available-for-sale, continuous unrealized loss position, 12 months or more, fair value	20,724,453	8,798,047
Securities available-for-sale, continuous unrealized loss position, 12 months or more, unrealized losses	-838,508	-1,040,743
Securities available-for-sale, continuous unrealized loss position, fair value	29,661,111	30,180,134
Securities available-for-sale, continuous unrealized loss position, unrealized losses	($911,187)	($2,191,401)

Note_5_Loans_Receivable_and_Cr2

Note 5 - Loans Receivable and Credit Disclosures (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Note 5 - Loans Receivable and Credit Disclosures (Details) [Line Items]
Percentage of Appraised Value Or Purchase Price Entity Lend	100.00%
Performing Loan Range, Maximum	$100,000
Loans and Leases Receivable, Impaired, Interest Lost on Nonaccrual Loans	136,000	287,000	366,000
Financing Receivables, Impaired, Troubled Debt Restructuring, Write-down	48,000	0	0
Financing Receivable, Modifications, Recorded Investment	1,129,000	1,424,000
Financing Receivable, Recorded Investment, Nonaccrual Status		1,237,000
Number Of Restructured Loans Granting Concessions		6
Financing Receivable, Modifications, Number of Contracts	6	2
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	0	0
Troubled Debt Restructuring Loan Payment Default Period	60 days
Accrual Loan [Member]
Note 5 - Loans Receivable and Credit Disclosures (Details) [Line Items]
Financing Receivable, Modifications, Recorded Investment		$187,000
Interest Rate Restructured [Member] | Commercial Real Estate [Member]
Note 5 - Loans Receivable and Credit Disclosures (Details) [Line Items]
Financing Receivable, Modifications, Number of Contracts	2
1-4 Family Residential Real Estate [Member]
Note 5 - Loans Receivable and Credit Disclosures (Details) [Line Items]
Percentage of Loan to Value Ratios, Maximum	90.00%
Financing Receivable, Modifications, Number of Contracts	1
Commercial Real Estate [Member]
Note 5 - Loans Receivable and Credit Disclosures (Details) [Line Items]
Percentage of Loan to Value Ratios, Maximum	80.00%
Financing Receivable, Modifications, Number of Contracts	3
Agriculture [Member]
Note 5 - Loans Receivable and Credit Disclosures (Details) [Line Items]
Percentage of Loan to Value Ratios, Maximum	80.00%
Financing Receivable, Modifications, Number of Contracts	1

Note_5_Loans_Receivable_and_Cr3

Note 5 - Loans Receivable and Credit Disclosures (Details) - Composition of Loans Receivable (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Note 5 - Loans Receivable and Credit Disclosures (Details) - Composition of Loans Receivable [Line Items]
Loans receivable	$667,371,041	$573,107,229
Less:
Allowance for loan losses	-8,838,181	-8,571,813	-7,772,571	-7,905,316
Deferred loan fees	-91,862	-33,869
	658,440,998	564,501,547
Construction Real Estate [Member]
Note 5 - Loans Receivable and Credit Disclosures (Details) - Composition of Loans Receivable [Line Items]
Loans receivable	36,015,565	23,927,507
Less:
Allowance for loan losses	-495,000	-392,000	-375,000	-793,000
1-4 Family Residential Real Estate [Member]
Note 5 - Loans Receivable and Credit Disclosures (Details) - Composition of Loans Receivable [Line Items]
Loans receivable	122,776,915	108,289,500
Less:
Allowance for loan losses	-1,648,000	-1,523,000	-1,433,000	-1,402,000
Commercial Real Estate [Member]
Note 5 - Loans Receivable and Credit Disclosures (Details) - Composition of Loans Receivable [Line Items]
Loans receivable	257,053,864	206,111,559
Less:
Allowance for loan losses	-3,214,000	-3,230,000	-2,859,000	-2,859,000
Agriculture Real Estate [Member]
Note 5 - Loans Receivable and Credit Disclosures (Details) - Composition of Loans Receivable [Line Items]
Loans receivable	57,449,353	53,833,997
Less:
Allowance for loan losses	-737,000	-686,000	-523,000	-501,000
Commercial [Member]
Note 5 - Loans Receivable and Credit Disclosures (Details) - Composition of Loans Receivable [Line Items]
Loans receivable	92,703,021	86,822,960
Less:
Allowance for loan losses	-1,247,000	-1,435,000	-1,461,000	-1,352,000
Agriculture [Member]
Note 5 - Loans Receivable and Credit Disclosures (Details) - Composition of Loans Receivable [Line Items]
Loans receivable	85,608,954	81,326,382
Less:
Allowance for loan losses	-1,312,000	-1,165,000	-945,000	-764,000
Consumer and Other [Member]
Note 5 - Loans Receivable and Credit Disclosures (Details) - Composition of Loans Receivable [Line Items]
Loans receivable	15,763,369	12,795,324
Less:
Allowance for loan losses	($185,000)	($141,000)	($177,000)	($234,000)

Note_5_Loans_Receivable_and_Cr4

Note 5 - Loans Receivable and Credit Disclosures (Details) - Changes in the Allowance for Loan Losses (USD $)	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Changes in the Allowance for Loan Losses [Abstract]
Balance, beginning				$8,571,813				$7,772,571	$8,571,813	$7,772,571	$7,905,316
Balance, ending	8,838,181				8,571,813				8,838,181	8,571,813	7,772,571
Provision for loan losses	299,120	55,145	35,644	39,231	620,428	92,388	60,000	13,574	429,140	786,390	22,277
Recoveries of loans charged-off									82,409	130,239	77,689
Loans charged-off									($245,181)	($117,387)	($232,711)

Note_5_Loans_Receivable_and_Cr5

Note 5 - Loans Receivable and Credit Disclosures (Details) - Activity in Allowance for Loan Losses (USD $)	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, beginning				$8,571,813				$7,772,571	$8,571,813	$7,772,571	$7,905,316
Provision (credit) for loan losses	299,120	55,145	35,644	39,231	620,428	92,388	60,000	13,574	429,140	786,390	22,277
Recoveries of loans charged-off									82,409	130,239	77,689
Loans charged-off									-245,181	-117,387	-232,711
Balance, ending	8,838,181				8,571,813				8,838,181	8,571,813	7,772,571
Construction Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, beginning				392,000				375,000	392,000	375,000	793,000
Provision (credit) for loan losses									78,000	17,000	-418,000
Recoveries of loans charged-off									25,000
Balance, ending	495,000				392,000				495,000	392,000	375,000
1-4 Family Residential Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, beginning				1,523,000				1,433,000	1,523,000	1,433,000	1,402,000
Provision (credit) for loan losses									258,000	117,000	182,000
Recoveries of loans charged-off									18,000	54,000	3,000
Loans charged-off									-151,000	-81,000	-154,000
Balance, ending	1,648,000				1,523,000				1,648,000	1,523,000	1,433,000
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, beginning				3,230,000				2,859,000	3,230,000	2,859,000	2,859,000
Provision (credit) for loan losses									-16,000	320,000	-4,000
Recoveries of loans charged-off										51,000	4,000
Balance, ending	3,214,000				3,230,000				3,214,000	3,230,000	2,859,000
Agriculture Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, beginning				686,000				523,000	686,000	523,000	501,000
Provision (credit) for loan losses									51,000	163,000	22,000
Balance, ending	737,000				686,000				737,000	686,000	523,000
Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, beginning				1,435,000				1,461,000	1,435,000	1,461,000	1,352,000
Provision (credit) for loan losses									-190,000	-29,000	115,000
Recoveries of loans charged-off									19,000	3,000	24,000
Loans charged-off									-17,000		-30,000
Balance, ending	1,247,000				1,435,000				1,247,000	1,435,000	1,461,000
Agriculture [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, beginning				1,165,000				945,000	1,165,000	945,000	764,000
Provision (credit) for loan losses									147,000	220,000	181,000
Balance, ending	1,312,000				1,165,000				1,312,000	1,165,000	945,000
Consumer and Other [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, beginning				141,000				177,000	141,000	177,000	234,000
Provision (credit) for loan losses									101,000	-22,000	-56,000
Recoveries of loans charged-off									20,000	22,000	47,000
Loans charged-off									-77,000	-36,000	-48,000
Balance, ending	$185,000				$141,000				$185,000	$141,000	$177,000

Note_5_Loans_Receivable_and_Cr6

Note 5 - Loans Receivable and Credit Disclosures (Details) - Allowance for Loan Losses Impairment Analysis (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Note 5 - Loans Receivable and Credit Disclosures (Details) - Allowance for Loan Losses Impairment Analysis [Line Items]
Ending balance: Individually evaluated for impairment	$337	$477
Ending balance: Collectively evaluated for impairment	8,501	8,095
Ending balance	8,838	8,572
Construction Real Estate [Member]
Note 5 - Loans Receivable and Credit Disclosures (Details) - Allowance for Loan Losses Impairment Analysis [Line Items]
Ending balance: Collectively evaluated for impairment	495	392
Ending balance	495	392
1-4 Family Residential Real Estate [Member]
Note 5 - Loans Receivable and Credit Disclosures (Details) - Allowance for Loan Losses Impairment Analysis [Line Items]
Ending balance: Individually evaluated for impairment	244	122
Ending balance: Collectively evaluated for impairment	1,404	1,401
Ending balance	1,648	1,523
Commercial Real Estate [Member]
Note 5 - Loans Receivable and Credit Disclosures (Details) - Allowance for Loan Losses Impairment Analysis [Line Items]
Ending balance: Individually evaluated for impairment	33	20
Ending balance: Collectively evaluated for impairment	3,181	3,210
Ending balance	3,214	3,230
Agriculture Real Estate [Member]
Note 5 - Loans Receivable and Credit Disclosures (Details) - Allowance for Loan Losses Impairment Analysis [Line Items]
Ending balance: Collectively evaluated for impairment	737	686
Ending balance	737	686
Commercial [Member]
Note 5 - Loans Receivable and Credit Disclosures (Details) - Allowance for Loan Losses Impairment Analysis [Line Items]
Ending balance: Individually evaluated for impairment	60	330
Ending balance: Collectively evaluated for impairment	1,187	1,105
Ending balance	1,247	1,435
Agriculture [Member]
Note 5 - Loans Receivable and Credit Disclosures (Details) - Allowance for Loan Losses Impairment Analysis [Line Items]
Ending balance: Individually evaluated for impairment		5
Ending balance: Collectively evaluated for impairment	1,312	1,160
Ending balance	1,312	1,165
Consumer and Other [Member]
Note 5 - Loans Receivable and Credit Disclosures (Details) - Allowance for Loan Losses Impairment Analysis [Line Items]
Ending balance: Collectively evaluated for impairment	185	141
Ending balance	$185	$141

Note_5_Loans_Receivable_and_Cr7

Note 5 - Loans Receivable and Credit Disclosures (Details) - Loans Receivable Impairment Analysis (USD $)	Dec. 31, 2014	Dec. 31, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]
Ending balance: Individually evaluated for impairment	$2,407,000	$2,721,000
Ending balance: Collectively evaluated for impairment	664,964,000	570,386,000
Ending balance	667,371,041	573,107,229
Construction Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Ending balance: Individually evaluated for impairment	195,000	510,000
Ending balance: Collectively evaluated for impairment	35,821,000	23,418,000
Ending balance	36,015,565	23,927,507
1-4 Family Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Ending balance: Individually evaluated for impairment	811,000	784,000
Ending balance: Collectively evaluated for impairment	121,966,000	107,505,000
Ending balance	122,776,915	108,289,500
Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Ending balance: Individually evaluated for impairment	833,000	526,000
Ending balance: Collectively evaluated for impairment	256,221,000	205,586,000
Ending balance	257,053,864	206,111,559
Agriculture Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Ending balance: Collectively evaluated for impairment	57,449,000	53,834,000
Ending balance	57,449,353	53,833,997
Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Ending balance: Individually evaluated for impairment	540,000	816,000
Ending balance: Collectively evaluated for impairment	92,163,000	86,007,000
Ending balance	92,703,021	86,822,960
Agriculture [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Ending balance: Individually evaluated for impairment	19,000	24,000
Ending balance: Collectively evaluated for impairment	85,590,000	81,302,000
Ending balance	85,608,954	81,326,382
Consumer and Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Ending balance: Individually evaluated for impairment	9,000	61,000
Ending balance: Collectively evaluated for impairment	15,754,000	12,734,000
Ending balance	$15,763,369	$12,795,324

Note_5_Loans_Receivable_and_Cr8

Note 5 - Loans Receivable and Credit Disclosures (Details) - Credit Risk Profile by Internally Assigned Grade (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Financing Receivable, Recorded Investment [Line Items]
Loan and lease receivable other than consumer and residential	$528,831,000	$452,023,000
Construction Real Estate [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loan and lease receivable other than consumer and residential	30,055,000	16,887,000
Construction Real Estate [Member] | Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Loan and lease receivable other than consumer and residential	3,893,000	3,545,000
Construction Real Estate [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loan and lease receivable other than consumer and residential	1,873,000	2,986,000
Construction Real Estate [Member] | Substandard Impaired [Member]
Financing Receivable, Recorded Investment [Line Items]
Loan and lease receivable other than consumer and residential	195,000	510,000
Construction Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Loan and lease receivable other than consumer and residential	36,016,000	23,928,000
Commercial Real Estate [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loan and lease receivable other than consumer and residential	223,775,000	169,659,000
Commercial Real Estate [Member] | Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Loan and lease receivable other than consumer and residential	18,617,000	20,267,000
Commercial Real Estate [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loan and lease receivable other than consumer and residential	1,296,000	798,000
Commercial Real Estate [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loan and lease receivable other than consumer and residential	12,532,000	14,862,000
Commercial Real Estate [Member] | Substandard Impaired [Member]
Financing Receivable, Recorded Investment [Line Items]
Loan and lease receivable other than consumer and residential	834,000	526,000
Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Loan and lease receivable other than consumer and residential	257,054,000	206,112,000
Agriculture Real Estate [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loan and lease receivable other than consumer and residential	51,024,000	51,486,000
Agriculture Real Estate [Member] | Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Loan and lease receivable other than consumer and residential	6,275,000	2,051,000
Agriculture Real Estate [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loan and lease receivable other than consumer and residential	88,000
Agriculture Real Estate [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loan and lease receivable other than consumer and residential	62,000	297,000
Agriculture Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Loan and lease receivable other than consumer and residential	57,449,000	53,834,000
Commercial [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loan and lease receivable other than consumer and residential	79,117,000	73,073,000
Commercial [Member] | Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Loan and lease receivable other than consumer and residential	10,086,000	10,717,000
Commercial [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loan and lease receivable other than consumer and residential	585,000	796,000
Commercial [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loan and lease receivable other than consumer and residential	2,376,000	1,421,000
Commercial [Member] | Substandard Impaired [Member]
Financing Receivable, Recorded Investment [Line Items]
Loan and lease receivable other than consumer and residential	539,000	816,000
Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Loan and lease receivable other than consumer and residential	92,703,000	86,823,000
Agriculture [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loan and lease receivable other than consumer and residential	78,387,000	78,476,000
Agriculture [Member] | Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Loan and lease receivable other than consumer and residential	6,827,000	1,963,000
Agriculture [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loan and lease receivable other than consumer and residential		9,000
Agriculture [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loan and lease receivable other than consumer and residential	395,000	854,000
Agriculture [Member] | Substandard Impaired [Member]
Financing Receivable, Recorded Investment [Line Items]
Loan and lease receivable other than consumer and residential		24,000
Agriculture [Member]
Financing Receivable, Recorded Investment [Line Items]
Loan and lease receivable other than consumer and residential	85,609,000	81,326,000
Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loan and lease receivable other than consumer and residential	462,358,000	389,581,000
Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Loan and lease receivable other than consumer and residential	45,698,000	38,543,000
Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loan and lease receivable other than consumer and residential	1,969,000	1,603,000
Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loan and lease receivable other than consumer and residential	17,238,000	20,420,000
Substandard Impaired [Member]
Financing Receivable, Recorded Investment [Line Items]
Loan and lease receivable other than consumer and residential	$1,568,000	$1,876,000

Note_5_Loans_Receivable_and_Cr9

Note 5 - Loans Receivable and Credit Disclosures (Details) - Credit Risk Profile Based on Payment Activity (USD $)	Dec. 31, 2014	Dec. 31, 2013
Note 5 - Loans Receivable and Credit Disclosures (Details) - Credit Risk Profile Based on Payment Activity [Line Items]
Loan and lease receivable consumer and residential	$138,540,000	$121,084,000
1-4 Family Residential Real Estate [Member] | Performing Financing Receivable [Member]
Note 5 - Loans Receivable and Credit Disclosures (Details) - Credit Risk Profile Based on Payment Activity [Line Items]
Loan and lease receivable consumer and residential	121,928,000	107,666,000
1-4 Family Residential Real Estate [Member] | Nonperforming Financing Receivable [Member]
Note 5 - Loans Receivable and Credit Disclosures (Details) - Credit Risk Profile Based on Payment Activity [Line Items]
Loan and lease receivable consumer and residential	849,000	623,000
1-4 Family Residential Real Estate [Member]
Note 5 - Loans Receivable and Credit Disclosures (Details) - Credit Risk Profile Based on Payment Activity [Line Items]
Loan and lease receivable consumer and residential	122,777,000	108,289,000
Consumer and Other [Member] | Performing Financing Receivable [Member]
Note 5 - Loans Receivable and Credit Disclosures (Details) - Credit Risk Profile Based on Payment Activity [Line Items]
Loan and lease receivable consumer and residential	15,756,000	12,740,000
Consumer and Other [Member] | Nonperforming Financing Receivable [Member]
Note 5 - Loans Receivable and Credit Disclosures (Details) - Credit Risk Profile Based on Payment Activity [Line Items]
Loan and lease receivable consumer and residential	7,000	55,000
Consumer and Other [Member]
Note 5 - Loans Receivable and Credit Disclosures (Details) - Credit Risk Profile Based on Payment Activity [Line Items]
Loan and lease receivable consumer and residential	15,763,000	12,795,000
Performing Financing Receivable [Member]
Note 5 - Loans Receivable and Credit Disclosures (Details) - Credit Risk Profile Based on Payment Activity [Line Items]
Loan and lease receivable consumer and residential	137,684,000	120,406,000
Nonperforming Financing Receivable [Member]
Note 5 - Loans Receivable and Credit Disclosures (Details) - Credit Risk Profile Based on Payment Activity [Line Items]
Loan and lease receivable consumer and residential	$856,000	$678,000

Recovered_Sheet1

Note 5 - Loans Receivable and Credit Disclosures (Details) - Impaired Loans (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
With no specific reserve recorded:
Loans with no specific reserve recorded, recorded investment	$1,378,000	$1,596,000	$3,180,000
Loans with no specific reserve recorded, unpaid principal balance	2,139,000	1,596,000	3,180,000
Loans with no specific reserve recorded, average recorded investment	1,242,000	2,510,000	3,620,000
Loans with no specific reserve recorded, interest income recognized	371,000	254,000	23,000
With an allowance recorded:
Loans with an allowance recorded, recorded investment	1,029,000	1,125,000	3,434,000
Loans with an allowance recorded, unpaid principal balance	1,145,000	1,125,000	3,434,000
Loans, related allowance	337,000	477,000	702,000
Loans with an allowance recorded, average recorded investment	931,000	2,328,000	3,503,000
Loans with an allowance recorded, interest income recognized	82,000	93,000
Total
Loans, recorded investment	2,407,000	2,721,000	6,614,000
Loans, unpaid principal balance	3,284,000	2,721,000	6,614,000
Loans, related allowance	337,000	477,000	702,000
Loans, average recorded investment	2,173,000	4,838,000	7,123,000
Loans, interest income recognized	453,000	347,000	23,000
Construction Real Estate [Member]
With no specific reserve recorded:
Loans with no specific reserve recorded, recorded investment	195,000	510,000	1,060,000
Loans with no specific reserve recorded, unpaid principal balance	346,000	510,000	1,060,000
Loans with no specific reserve recorded, average recorded investment	408,000	837,000	1,445,000
Loans with no specific reserve recorded, interest income recognized	152,000	25,000	4,000
With an allowance recorded:
Loans with an allowance recorded, recorded investment			433,000
Loans with an allowance recorded, unpaid principal balance			433,000
Loans, related allowance			100,000
Loans with an allowance recorded, average recorded investment		250,000	552,000
Loans with an allowance recorded, interest income recognized		93,000
Total
Loans, recorded investment	195,000	510,000	1,493,000
Loans, unpaid principal balance	346,000	510,000	1,493,000
Loans, related allowance			100,000
Loans, average recorded investment	408,000	1,087,000	1,997,000
Loans, interest income recognized	152,000	118,000	4,000
1-4 Family Residential Real Estate [Member]
With no specific reserve recorded:
Loans with no specific reserve recorded, recorded investment	24,000	483,000	655,000
Loans with no specific reserve recorded, unpaid principal balance	29,000	483,000	655,000
Loans with no specific reserve recorded, average recorded investment	188,000	551,000	1,245,000
Loans with no specific reserve recorded, interest income recognized	12,000	8,000	14,000
With an allowance recorded:
Loans with an allowance recorded, recorded investment	787,000	301,000	466,000
Loans with an allowance recorded, unpaid principal balance	903,000	301,000	466,000
Loans, related allowance	244,000	122,000	110,000
Loans with an allowance recorded, average recorded investment	380,000	396,000	483,000
Total
Loans, recorded investment	811,000	784,000	1,121,000
Loans, unpaid principal balance	932,000	784,000	1,121,000
Loans, related allowance	244,000	122,000	110,000
Loans, average recorded investment	568,000	947,000	1,728,000
Loans, interest income recognized	12,000	8,000	14,000
Commercial Real Estate [Member]
With no specific reserve recorded:
Loans with no specific reserve recorded, recorded investment	675,000	480,000	1,381,000
Loans with no specific reserve recorded, unpaid principal balance	1,204,000	480,000	1,381,000
Loans with no specific reserve recorded, average recorded investment	389,000	1,047,000	892,000
Loans with no specific reserve recorded, interest income recognized	207,000	209,000	5,000
With an allowance recorded:
Loans with an allowance recorded, recorded investment	158,000	46,000	1,899,000
Loans with an allowance recorded, unpaid principal balance	158,000	46,000	1,899,000
Loans, related allowance	33,000	20,000	86,000
Loans with an allowance recorded, average recorded investment	114,000	927,000	1,854,000
Loans with an allowance recorded, interest income recognized	4,000
Total
Loans, recorded investment	833,000	526,000	3,280,000
Loans, unpaid principal balance	1,362,000	526,000	3,280,000
Loans, related allowance	33,000	20,000	86,000
Loans, average recorded investment	503,000	1,974,000	2,746,000
Loans, interest income recognized	211,000	209,000	5,000
Commercial [Member]
With no specific reserve recorded:
Loans with no specific reserve recorded, recorded investment	456,000	43,000	80,000
Loans with no specific reserve recorded, unpaid principal balance	535,000	43,000	80,000
Loans with no specific reserve recorded, average recorded investment	218,000	55,000	37,000
Loans with no specific reserve recorded, interest income recognized		12,000
With an allowance recorded:
Loans with an allowance recorded, recorded investment	84,000	773,000	630,000
Loans with an allowance recorded, unpaid principal balance	84,000	773,000	630,000
Loans, related allowance	60,000	330,000	400,000
Loans with an allowance recorded, average recorded investment	432,000	750,000	610,000
Loans with an allowance recorded, interest income recognized	78,000
Total
Loans, recorded investment	540,000	816,000	710,000
Loans, unpaid principal balance	619,000	816,000	710,000
Loans, related allowance	60,000	330,000	400,000
Loans, average recorded investment	650,000	805,000	647,000
Loans, interest income recognized	78,000	12,000
Agriculture [Member]
With no specific reserve recorded:
Loans with no specific reserve recorded, recorded investment	19,000	19,000
Loans with no specific reserve recorded, unpaid principal balance	19,000	19,000
Loans with no specific reserve recorded, average recorded investment	19,000	4,000
With an allowance recorded:
Loans with an allowance recorded, recorded investment		5,000	6,000
Loans with an allowance recorded, unpaid principal balance		5,000	6,000
Loans, related allowance		5,000	6,000
Loans with an allowance recorded, average recorded investment	3,000	5,000	2,000
Total
Loans, recorded investment	19,000	24,000	6,000
Loans, unpaid principal balance	19,000	24,000	6,000
Loans, related allowance		5,000	6,000
Loans, average recorded investment	22,000	9,000	2,000
Consumer and Other [Member]
With no specific reserve recorded:
Loans with no specific reserve recorded, recorded investment	9,000	61,000	4,000
Loans with no specific reserve recorded, unpaid principal balance	6,000	61,000	4,000
Loans with no specific reserve recorded, average recorded investment	20,000	16,000	1,000
With an allowance recorded:
Loans with an allowance recorded, average recorded investment	2,000		2,000
Total
Loans, recorded investment	9,000	61,000	4,000
Loans, unpaid principal balance	6,000	61,000	4,000
Loans, average recorded investment	$22,000	$16,000	$3,000

Recovered_Sheet2

Note 5 - Loans Receivable and Credit Disclosures (Details) - Troubled Debt Restructurings (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Financing Receivable, Modifications [Line Items]
Troubled debt restructuring, number of contracts	6	2
Troubled debt restructuring, pre-modification outstanding, recorded investment	$434,000	$176,000
Troubled debt restructuring, post-modification outstanding, recorded investment	434,000	176,000
1-4 Family Residential Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Troubled debt restructuring, number of contracts	1
Troubled debt restructuring, pre-modification outstanding, recorded investment	25,000
Troubled debt restructuring, post-modification outstanding, recorded investment	25,000
Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Troubled debt restructuring, number of contracts	3
Troubled debt restructuring, pre-modification outstanding, recorded investment	384,000
Troubled debt restructuring, post-modification outstanding, recorded investment	384,000
Commercial [Member]
Financing Receivable, Modifications [Line Items]
Troubled debt restructuring, number of contracts		1
Troubled debt restructuring, pre-modification outstanding, recorded investment		130,000
Troubled debt restructuring, post-modification outstanding, recorded investment		130,000
Agriculture [Member]
Financing Receivable, Modifications [Line Items]
Troubled debt restructuring, number of contracts	1
Troubled debt restructuring, pre-modification outstanding, recorded investment	19,000
Troubled debt restructuring, post-modification outstanding, recorded investment	19,000
Consumer and Other [Member]
Financing Receivable, Modifications [Line Items]
Troubled debt restructuring, number of contracts	1	1
Troubled debt restructuring, pre-modification outstanding, recorded investment	6,000	46,000
Troubled debt restructuring, post-modification outstanding, recorded investment	$6,000	$46,000

Recovered_Sheet3

Note 5 - Loans Receivable and Credit Disclosures (Details) - Past Due Loans (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, 30-89 past due	$1,774,000	$1,182,000
Loans, 90 days or greater past due	186,000	821,000
Loans, past due	1,960,000	2,003,000
Loans, current	665,411,000	571,104,000
Loans	667,371,000	573,107,000
Loans, 90 days or greater accruing	36,000	27,000
Construction Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, 30-89 past due	64,000
Loans, past due	64,000
Loans, current	35,952,000	23,928,000
Loans	36,016,000	23,928,000
1-4 Family Residential Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, 30-89 past due	888,000	1,059,000
Loans, 90 days or greater past due	57,000	400,000
Loans, past due	945,000	1,459,000
Loans, current	121,832,000	106,830,000
Loans	122,777,000	108,289,000
Loans, 90 days or greater accruing	36,000	27,000
Commercial Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, 30-89 past due	467,000
Loans, 90 days or greater past due	45,000	46,000
Loans, past due	512,000	46,000
Loans, current	256,542,000	206,066,000
Loans	257,054,000	206,112,000
Agriculture Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, 30-89 past due	28,000
Loans, past due	28,000
Loans, current	57,421,000	53,834,000
Loans	57,449,000	53,834,000
Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, 30-89 past due	264,000	88,000
Loans, 90 days or greater past due	84,000	375,000
Loans, past due	348,000	463,000
Loans, current	92,355,000	86,360,000
Loans	92,703,000	86,823,000
Agriculture [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, current	85,609,000	81,326,000
Loans	85,609,000	81,326,000
Consumer and Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, 30-89 past due	63,000	35,000
Loans, past due	63,000	35,000
Loans, current	15,700,000	12,760,000
Loans	$15,763,000	$12,795,000

Recovered_Sheet4

Note 5 - Loans Receivable and Credit Disclosures (Details) - Loan Transactions With Related Parties (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Loan Transactions With Related Parties [Abstract]
Balance, beginning of year	$7,911,436	$8,762,305
Balance, end of year	8,517,656	7,911,436
New loans	17,264,513	19,442,541
Repayments	-16,837,127	-20,920,256
Change in status	$178,834	$626,846

Note_6_Bank_Premises_and_Equip2

Note 6 - Bank Premises and Equipment (Details) - Major Classes of Bank Premises and Equipment (USD $)	Dec. 31, 2014	Dec. 31, 2013
Property, Plant and Equipment [Line Items]
Bank premises and equipment	$27,199,671	$24,047,276
Less accumulated depreciation	11,242,682	12,154,947
	15,956,989	11,892,329
Land [Member]
Property, Plant and Equipment [Line Items]
Bank premises and equipment	3,849,144	2,462,563
Building and Building Improvements [Member]
Property, Plant and Equipment [Line Items]
Bank premises and equipment	17,470,675	16,149,479
Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Bank premises and equipment	$5,879,852	$5,435,234

Note_7_Other_Real_Estate_Owned2

Note 7 - Other Real Estate Owned (Details) - Changes in Other Real Estate Owned (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Changes in Other Real Estate Owned [Abstract]
Balance,	$8,861,107	$9,910,825
Transfer of loans	202,409	196,433
Acquired	1,267,720
Impairment	-1,744,366	-670,000	-303,588
Net proceeds from sale	-265,694	-626,596	-1,242,582
Gain on sale, net	95,036	50,445	-32,711
Other changes	19,673
Balance,	$8,435,885	$8,861,107	$9,910,825

Note_7_Other_Real_Estate_Owned3

Note 7 - Other Real Estate Owned (Details) - Components of Other Real Estate Owned (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Note 7 - Other Real Estate Owned (Details) - Components of Other Real Estate Owned [Line Items]
Other real estate	$8,435,885	$8,861,107	$9,910,825
Construction And Land Development [Member]
Note 7 - Other Real Estate Owned (Details) - Components of Other Real Estate Owned [Line Items]
Other real estate	5,384,955	6,750,503
One to Four Family Residential Real Estate [Member]
Note 7 - Other Real Estate Owned (Details) - Components of Other Real Estate Owned [Line Items]
Other real estate	1,269,629	1,296,227
Real Estate: Commercial [Member]
Note 7 - Other Real Estate Owned (Details) - Components of Other Real Estate Owned [Line Items]
Other real estate	$1,781,301	$814,377

Note_8_Goodwill_Details

Note 8 - Goodwill (Details) (USD $)	12 Months Ended	0 Months Ended
	Dec. 31, 2014	Aug. 29, 2014	Apr. 27, 2012	Dec. 31, 2013
Note 8 - Goodwill (Details) [Line Items]
Goodwill	$6,732,216			$5,600,749
Finite Tax Lived Intangible Asset, Usefule Life	15 years
First Bank Branches [Member]
Note 8 - Goodwill (Details) [Line Items]
Number of Businesses Acquired		3
Goodwill		1,131,000
Liberty Bank Offices [Member]
Note 8 - Goodwill (Details) [Line Items]
Number of Businesses Acquired			2
Goodwill			$5,601,000

Note_9_Core_Deposit_Intangible2

Note 9 - Core Deposit Intangible Asset (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Note 9 - Core Deposit Intangible Asset (Details) [Line Items]
Amortization of Intangible Assets	$317,333	$273,700	$196,736
Core Deposits [Member] | First Bank Branches [Member]
Note 9 - Core Deposit Intangible Asset (Details) [Line Items]
Finite-Lived Intangible Assets, Gross	1,000,000
Core Deposits [Member] | Liberty Bank Offices [Member]
Note 9 - Core Deposit Intangible Asset (Details) [Line Items]
Finite-Lived Intangible Assets, Gross		1,500,000
Core Deposits [Member]
Note 9 - Core Deposit Intangible Asset (Details) [Line Items]
Finite-Lived Intangible Assets, Gross	2,518,000	1,500,000
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	3 years	5 years
Amortization of Intangible Assets	$317,000	$274,000	$197,000

Note_9_Core_Deposit_Intangible3

Note 9 - Core Deposit Intangible Asset (Details) - Core Deposit Intangible Assets (Core Deposits [Member], USD $)	Dec. 31, 2014	Dec. 31, 2013
Core Deposits [Member]
Note 9 - Core Deposit Intangible Asset (Details) - Core Deposit Intangible Assets [Line Items]
Core deposit intangible asset	$2,518,000	$1,500,000
Core deposit intangible asset	$788,000	$471,000

Note_9_Core_Deposit_Intangible4

Note 9 - Core Deposit Intangible Asset (Details) - Estimated Remaining Amortization Expense on Core Deposits (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Note 9 - Core Deposit Intangible Asset (Details) - Estimated Remaining Amortization Expense on Core Deposits [Line Items]
	$1,730,231	$1,029,564
Core Deposits [Member]
Note 9 - Core Deposit Intangible Asset (Details) - Estimated Remaining Amortization Expense on Core Deposits [Line Items]
2015	422,000
2016	354,000
2017	299,000
2018	251,000
2019	127,000
After	277,000
	$1,730,000	$1,029,000	$1,303,000

Note_9_Core_Deposit_Intangible5

Note 9 - Core Deposit Intangible Asset (Details) - Core Deposit Intangible Assets Activity (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Finite-Lived Intangible Assets [Line Items]
Balance	$1,029,564
Amortization	-317,333	-273,700	-196,736
Balance	1,730,231	1,029,564
Core Deposits [Member]
Finite-Lived Intangible Assets [Line Items]
Balance	1,029,000	1,303,000
Purchases	1,018,000		1,500,000
Amortization	-317,000	-274,000	-197,000
Balance	$1,730,000	$1,029,000	$1,303,000

Note_10_Deposits_Details

Note 10 - Deposits (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Disclosure Text Block [Abstract]
Related Party Deposit Liabilities	$16,388,000	$17,679,000

Note_10_Deposits_Details_Matur

Note 10 - Deposits (Details) - Maturities of Time Deposits (USD $)	Dec. 31, 2014
Maturities of Time Deposits [Abstract]
2015	$140,711,485
2016	51,755,767
2017	29,342,497
2018	12,431,942
2019	8,873,979
	$243,115,670

Note_10_Deposits_Details_Inter

Note 10 - Deposits (Details) - Interest Expense On Deposits (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Interest Expense On Deposits [Abstract]
NOW accounts	$529,390	$593,210	$599,992
Savings and money market	612,632	582,502	553,142
Time deposits	2,243,077	2,686,001	3,319,203
	$3,385,099	$3,861,713	$4,472,337

Note_11_Borrowings_Details

Note 11 - Borrowings (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Debt Disclosure [Abstract]
Federal Home Loan Bank Advances and Long-term Debt	$37,467,737	$34,540,526
Federal Home Loan Bank Advances and Long-term Debt Weighted Average Interest Rate	3.24%	3.10%
Securities Loaned or Sold under Agreements to Repurchase, Fair Value Disclosure	13,921,000
Federal Home Loan Bank, Advances, General Debt Obligations, Amount of Available, Unused Funds	$137,399,000

Note_11_Borrowings_Details_FHL

Note 11 - Borrowings (Details) - FHLB Advances and Other Long-term Borrowings (USD $)	Dec. 31, 2014	Dec. 31, 2013
FHLB advances maturing in:
2016	$1,000,000
2016	0.75%
2017	1,000,000
2017	1.08%
2018	11,500,000
2018	2.94%
After 2018	967,737
After 2018	3.50%
Total FHLB advances	14,467,737
Total FHLB advances	2.69%
Other borrowings maturing in:
2018	18,000,000
2018	3.45%
2022	5,000,000
2022	4.12%
Total other borrowings	23,000,000	20,000,000
Total other borrowings	3.59%
Total FHLB and other borrowings	37,467,737	34,540,526
Total FHLB and other borrowings	3.24%	3.10%
Callable February 2015 [Member]
FHLB advances maturing in:
2018	4,500,000
Callable March 2015 [Member]
FHLB advances maturing in:
2018	7,000,000
Repurchase Agreement [Member]
Other borrowings maturing in:
2018	13,000,000
2022	5,000,000
Financing Agreements [Member]
Other borrowings maturing in:
2018	$5,000,000

Note_11_Borrowings_Details_FHL1

Note 11 - Borrowings (Details) - FHLB Advances and Other Long-term Borrowings (Parentheticals) (USD $)	12 Months Ended
	Dec. 31, 2014
Note 11 - Borrowings (Details) - FHLB Advances and Other Long-term Borrowings (Parentheticals) [Line Items]
FHLB advances, callable	$11,500,000
FHLB advances, amortizing period	15 years
Other Borrowing Maturing	18,000,000
Financing Agreements,Maturity January 2022	5,000,000
Callable February 2015 [Member]
Note 11 - Borrowings (Details) - FHLB Advances and Other Long-term Borrowings (Parentheticals) [Line Items]
FHLB advances, callable	4,500,000
Callable March 2015 [Member]
Note 11 - Borrowings (Details) - FHLB Advances and Other Long-term Borrowings (Parentheticals) [Line Items]
FHLB advances, callable	7,000,000
Repurchase Agreement [Member]
Note 11 - Borrowings (Details) - FHLB Advances and Other Long-term Borrowings (Parentheticals) [Line Items]
Other Borrowing Maturing	13,000,000
Financing Agreements,Maturity January 2022	5,000,000
Financing Agreements [Member]
Note 11 - Borrowings (Details) - FHLB Advances and Other Long-term Borrowings (Parentheticals) [Line Items]
Other Borrowing Maturing	$5,000,000

Note_12_Employee_Benefit_Plans1

Note 12 - Employee Benefit Plans (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Compensation and Retirement Disclosure [Abstract]
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent	3.00%	3.00%	3.00%
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay	3.00%	3.00%	3.00%
Defined Contribution Plan, Employer Discretionary Contribution Amount (in Dollars)	$631,000	$574,000	$548,000

Note_13_Income_Taxes_Details

Note 13 - Income Taxes (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Tax Disclosure [Abstract]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	35.00%	35.00%	35.00%
Accrued Income Taxes	$110,000	$221,000

Note_13_Income_Taxes_Details_C

Note 13 - Income Taxes (Details) - Components of Income Tax Expense (USD $)	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Federal:
Current									$4,568,497	$4,104,278	$3,975,247
Deferred									16,322	-392,690	-184,093
									4,584,819	3,711,588	3,791,154
State:
Current									1,014,567	973,694	954,724
Deferred									16,133	-27,360	1,765
									1,030,700	946,334	956,489
Income tax expense	$1,023,465	$1,393,256	$1,413,653	$1,785,145	$1,133,894	$1,295,916	$1,018,858	$1,209,254	$5,615,519	$4,657,922	$4,747,643

Note_13_Income_Taxes_Details_I

Note 13 - Income Taxes (Details) - Income Tax Reconciliation (USD $)	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Tax Reconciliation [Abstract]
Income taxes at 35% federal tax rate									$7,302,815	$6,514,048	$6,625,483
Increase (decrease) resulting from:
Tax-exempt interest and dividends									-2,213,701	-2,399,516	-2,419,917
State taxes, net of federal tax benefit									699,960	624,928	610,450
Other									-173,555	-81,538	-68,373
Total income tax expense	$1,023,465	$1,393,256	$1,413,653	$1,785,145	$1,133,894	$1,295,916	$1,018,858	$1,209,254	$5,615,519	$4,657,922	$4,747,643

Note_13_Income_Taxes_Details_I1

Note 13 - Income Taxes (Details) - Income Tax Reconciliation (Parentheticals)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Tax Reconciliation [Abstract]
Income taxes, federal tax rate	35.00%	35.00%	35.00%

Note_13_Income_Taxes_Details_D

Note 13 - Income Taxes (Details) - Deferred Tax Assets and Liabilities (USD $)	Dec. 31, 2014	Dec. 31, 2012
Deferred tax assets:
Allowance for loan losses	$3,134,667	$2,961,646
Other real estate owned	2,393,507	1,756,144
Other-than-temporary impairment on securities	96,924	96,924
Accrued vacation	239,949	207,677
Other deferred tax assets	786,818	887,205
	6,651,865	5,909,596
Deferred tax liabilities:
Net unrealized gains on securities available-for-sale	-2,626,423	-264,952
Bank premises and equipment	-971,570	-381,903
Other deferred tax liabilities	-420,695	-235,638
	-4,018,688	-882,493
Net deferred tax asset	$2,633,177	$5,027,103

Note_14_Commitments_Contingenc2

Note 14 - Commitments, Contingencies and Concentrations of Credit Risk (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Commitments and Contingencies Disclosure [Abstract]
Fixed Interest Rate Commitments to Extend Credit	$108,039,000	$85,045,000
Liabilities to Cover Estimated Credit Losses for Off-balance-sheet	$481,000	$364,000

Note_14_Commitments_Contingenc3

Note 14 - Commitments, Contingencies and Concentrations of Credit Risk (Details) - Commitments (USD $)	Dec. 31, 2014	Dec. 31, 2013
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Commitments	$166,053,000	$118,413,000
Commitments to Extend Credit [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Commitments	159,527,000	115,278,000
Standby Letters of Credit [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Commitments	$6,526,000	$3,135,000

Note_15_Regulatory_Matters_Det

Note 15 - Regulatory Matters (Details) - Actual Capital Amounts and Ratios (USD $)	Dec. 31, 2014	Dec. 31, 2013
Total capital (to risk- weighted assets):
Total capital (to risk-weighted assets), actual amount	$151,146	$143,976
Total capital (to risk-weighted assets), actual ratio	16.60%	17.20%
Total capital (to risk-weighted assets), amount for capital adequacy purposes	72,879	67,068
Total capital (to risk-weighted assets), ratio for capital adequacy purposes	8.00%	8.00%
Total capital (to risk-weighted assets), amount to be well capitalized under prompt corrective action provisions
Total capital (to risk-weighted assets), ratio to be well capitalized under prompt corrective action provisions
Tier 1 capital (to risk- weighted assets):
Tier 1 capital (to risk-weighted assets), actual amount	141,739	135,024
Tier 1 capital (to risk-weighted assets), actual ratio	15.60%	16.10%
Tier 1 capital (to risk-weighted assets), amount for capital adequacy purposes	36,440	33,534
Tier 1 capital (to risk-weighted assets), ratio for capital adequacy purposes	4.00%	4.00%
Tier 1 capital (to risk-weighted assets), amount to be well capitalized under prompt corrective action provisions
Tier 1 capital (to risk-weighted assets), ratio to be well capitalized under prompt corrective action provisions
Tier 1 capital (to average- weighted assets):
Tier 1 capital (to average-weighted assets), actual amount	141,739	135,024
Tier 1 capital (to average-weighted assets), actual ratio	11.00%	11.00%
Tier 1 capital (to average-weighted assets), amount for capital adequacy purposes	51,604	49,173
Tier 1 capital (to average-weighted assets), ratio for capital adequacy purposes	4.00%	4.00%
Tier 1 capital (to average-weighted assets), amount to be well capitalized under prompt corrective action provisions
Tier 1 capital (to average-weighted assets), ratio to be well capitalized under prompt corrective action provisions
Boone Bank & Trust [Member]
Total capital (to risk- weighted assets):
Total capital (to risk-weighted assets), actual amount	13,948	13,457
Total capital (to risk-weighted assets), actual ratio	15.70%	16.10%
Total capital (to risk-weighted assets), amount for capital adequacy purposes	7,123	6,690
Total capital (to risk-weighted assets), ratio for capital adequacy purposes	8.00%	8.00%
Total capital (to risk-weighted assets), amount to be well capitalized under prompt corrective action provisions	8,904	8,362
Total capital (to risk-weighted assets), ratio to be well capitalized under prompt corrective action provisions	10.00%	10.00%
Tier 1 capital (to risk- weighted assets):
Tier 1 capital (to risk-weighted assets), actual amount	13,084	12,670
Tier 1 capital (to risk-weighted assets), actual ratio	14.70%	15.20%
Tier 1 capital (to risk-weighted assets), amount for capital adequacy purposes	3,562	3,345
Tier 1 capital (to risk-weighted assets), ratio for capital adequacy purposes	4.00%	4.00%
Tier 1 capital (to risk-weighted assets), amount to be well capitalized under prompt corrective action provisions	5,342	5,017
Tier 1 capital (to risk-weighted assets), ratio to be well capitalized under prompt corrective action provisions	6.00%	6.00%
Tier 1 capital (to average- weighted assets):
Tier 1 capital (to average-weighted assets), actual amount	13,084	12,670
Tier 1 capital (to average-weighted assets), actual ratio	9.80%	9.80%
Tier 1 capital (to average-weighted assets), amount for capital adequacy purposes	5,325	5,158
Tier 1 capital (to average-weighted assets), ratio for capital adequacy purposes	4.00%	4.00%
Tier 1 capital (to average-weighted assets), amount to be well capitalized under prompt corrective action provisions	6,656	6,447
Tier 1 capital (to average-weighted assets), ratio to be well capitalized under prompt corrective action provisions	5.00%	5.00%
First National Bank [Member]
Total capital (to risk- weighted assets):
Total capital (to risk-weighted assets), actual amount	69,174	67,231
Total capital (to risk-weighted assets), actual ratio	14.70%	16.40%
Total capital (to risk-weighted assets), amount for capital adequacy purposes	37,568	32,838
Total capital (to risk-weighted assets), ratio for capital adequacy purposes	8.00%	8.00%
Total capital (to risk-weighted assets), amount to be well capitalized under prompt corrective action provisions	46,960	41,048
Total capital (to risk-weighted assets), ratio to be well capitalized under prompt corrective action provisions	10.00%	10.00%
Tier 1 capital (to risk- weighted assets):
Tier 1 capital (to risk-weighted assets), actual amount	65,112	63,299
Tier 1 capital (to risk-weighted assets), actual ratio	13.90%	15.40%
Tier 1 capital (to risk-weighted assets), amount for capital adequacy purposes	18,784	16,419
Tier 1 capital (to risk-weighted assets), ratio for capital adequacy purposes	4.00%	4.00%
Tier 1 capital (to risk-weighted assets), amount to be well capitalized under prompt corrective action provisions	28,176	24,629
Tier 1 capital (to risk-weighted assets), ratio to be well capitalized under prompt corrective action provisions	6.00%	6.00%
Tier 1 capital (to average- weighted assets):
Tier 1 capital (to average-weighted assets), actual amount	65,112	63,299
Tier 1 capital (to average-weighted assets), actual ratio	9.40%	10.00%
Tier 1 capital (to average-weighted assets), amount for capital adequacy purposes	27,671	25,178
Tier 1 capital (to average-weighted assets), ratio for capital adequacy purposes	4.00%	4.00%
Tier 1 capital (to average-weighted assets), amount to be well capitalized under prompt corrective action provisions	34,589	31,472
Tier 1 capital (to average-weighted assets), ratio to be well capitalized under prompt corrective action provisions	5.00%	5.00%
Reliance State Bank [Member]
Total capital (to risk- weighted assets):
Total capital (to risk-weighted assets), actual amount	21,727	19,616
Total capital (to risk-weighted assets), actual ratio	13.20%	12.20%
Total capital (to risk-weighted assets), amount for capital adequacy purposes	13,166	12,916
Total capital (to risk-weighted assets), ratio for capital adequacy purposes	8.00%	8.00%
Total capital (to risk-weighted assets), amount to be well capitalized under prompt corrective action provisions	16,457	16,145
Total capital (to risk-weighted assets), ratio to be well capitalized under prompt corrective action provisions	10.00%	10.00%
Tier 1 capital (to risk- weighted assets):
Tier 1 capital (to risk-weighted assets), actual amount	19,966	18,130
Tier 1 capital (to risk-weighted assets), actual ratio	12.10%	11.20%
Tier 1 capital (to risk-weighted assets), amount for capital adequacy purposes	6,583	6,458
Tier 1 capital (to risk-weighted assets), ratio for capital adequacy purposes	4.00%	4.00%
Tier 1 capital (to risk-weighted assets), amount to be well capitalized under prompt corrective action provisions	9,874	9,687
Tier 1 capital (to risk-weighted assets), ratio to be well capitalized under prompt corrective action provisions	6.00%	6.00%
Tier 1 capital (to average- weighted assets):
Tier 1 capital (to average-weighted assets), actual amount	19,966	18,130
Tier 1 capital (to average-weighted assets), actual ratio	9.60%	8.60%
Tier 1 capital (to average-weighted assets), amount for capital adequacy purposes	8,321	8,452
Tier 1 capital (to average-weighted assets), ratio for capital adequacy purposes	4.00%	4.00%
Tier 1 capital (to average-weighted assets), amount to be well capitalized under prompt corrective action provisions	10,402	10,565
Tier 1 capital (to average-weighted assets), ratio to be well capitalized under prompt corrective action provisions	5.00%	5.00%
State Bank and Trust [Member]
Total capital (to risk- weighted assets):
Total capital (to risk-weighted assets), actual amount	18,708	17,734
Total capital (to risk-weighted assets), actual ratio	15.80%	16.00%
Total capital (to risk-weighted assets), amount for capital adequacy purposes	9,485	8,876
Total capital (to risk-weighted assets), ratio for capital adequacy purposes	8.00%	8.00%
Total capital (to risk-weighted assets), amount to be well capitalized under prompt corrective action provisions	11,856	11,096
Total capital (to risk-weighted assets), ratio to be well capitalized under prompt corrective action provisions	10.00%	10.00%
Tier 1 capital (to risk- weighted assets):
Tier 1 capital (to risk-weighted assets), actual amount	17,224	16,344
Tier 1 capital (to risk-weighted assets), actual ratio	14.50%	14.70%
Tier 1 capital (to risk-weighted assets), amount for capital adequacy purposes	4,742	4,438
Tier 1 capital (to risk-weighted assets), ratio for capital adequacy purposes	4.00%	4.00%
Tier 1 capital (to risk-weighted assets), amount to be well capitalized under prompt corrective action provisions	7,113	6,657
Tier 1 capital (to risk-weighted assets), ratio to be well capitalized under prompt corrective action provisions	6.00%	6.00%
Tier 1 capital (to average- weighted assets):
Tier 1 capital (to average-weighted assets), actual amount	17,224	16,344
Tier 1 capital (to average-weighted assets), actual ratio	10.90%	10.40%
Tier 1 capital (to average-weighted assets), amount for capital adequacy purposes	6,318	6,282
Tier 1 capital (to average-weighted assets), ratio for capital adequacy purposes	4.00%	4.00%
Tier 1 capital (to average-weighted assets), amount to be well capitalized under prompt corrective action provisions	7,898	7,852
Tier 1 capital (to average-weighted assets), ratio to be well capitalized under prompt corrective action provisions	5.00%	5.00%
United Bank and Trust [Member]
Total capital (to risk- weighted assets):
Total capital (to risk-weighted assets), actual amount	14,089	13,677
Total capital (to risk-weighted assets), actual ratio	21.30%	19.60%
Total capital (to risk-weighted assets), amount for capital adequacy purposes	5,295	5,597
Total capital (to risk-weighted assets), ratio for capital adequacy purposes	8.00%	8.00%
Total capital (to risk-weighted assets), amount to be well capitalized under prompt corrective action provisions	6,618	6,996
Total capital (to risk-weighted assets), ratio to be well capitalized under prompt corrective action provisions	10.00%	10.00%
Tier 1 capital (to risk- weighted assets):
Tier 1 capital (to risk-weighted assets), actual amount	13,313	12,802
Tier 1 capital (to risk-weighted assets), actual ratio	20.10%	18.30%
Tier 1 capital (to risk-weighted assets), amount for capital adequacy purposes	2,647	2,798
Tier 1 capital (to risk-weighted assets), ratio for capital adequacy purposes	4.00%	4.00%
Tier 1 capital (to risk-weighted assets), amount to be well capitalized under prompt corrective action provisions	3,971	4,198
Tier 1 capital (to risk-weighted assets), ratio to be well capitalized under prompt corrective action provisions	6.00%	6.00%
Tier 1 capital (to average- weighted assets):
Tier 1 capital (to average-weighted assets), actual amount	13,313	12,802
Tier 1 capital (to average-weighted assets), actual ratio	12.30%	11.70%
Tier 1 capital (to average-weighted assets), amount for capital adequacy purposes	4,315	4,378
Tier 1 capital (to average-weighted assets), ratio for capital adequacy purposes	4.00%	4.00%
Tier 1 capital (to average-weighted assets), amount to be well capitalized under prompt corrective action provisions	$5,394	$5,472
Tier 1 capital (to average-weighted assets), ratio to be well capitalized under prompt corrective action provisions	5.00%	5.00%

Note_16_Fair_Value_Measurement2

Note 16 - Fair Value Measurements (Details) - Assets Measured at Fair Value on a Recurring Basis (USD $)	Dec. 31, 2014	Dec. 31, 2013
2014
Available For Sale Securities	$542,502,381	$580,039,080
US Treasury and Government [Member] | Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
2014
Available For Sale Securities	1,448,000
US Treasury and Government [Member] | Fair Value, Measurements, Recurring [Member]
2014
Available For Sale Securities	1,448,000
US Government Agencies Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
2014
Available For Sale Securities	87,307,000	61,178,000
US Government Agencies Debt Securities [Member] | Fair Value, Measurements, Recurring [Member]
2014
Available For Sale Securities	87,307,000	61,178,000
US Government Agencies Debt Securities [Member]
2014
Available For Sale Securities	87,307,411	61,177,791
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member] | Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
2014
Available For Sale Securities	120,985,000	155,142,000
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member] | Fair Value, Measurements, Recurring [Member]
2014
Available For Sale Securities	120,985,000	155,142,000
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
2014
Available For Sale Securities	120,984,989	155,141,956
US States and Political Subdivisions Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
2014
Available For Sale Securities	281,776,000	315,224,000
US States and Political Subdivisions Debt Securities [Member] | Fair Value, Measurements, Recurring [Member]
2014
Available For Sale Securities	281,776,000	315,224,000
US States and Political Subdivisions Debt Securities [Member]
2014
Available For Sale Securities	281,776,320	315,224,133
Corporate Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
2014
Available For Sale Securities	47,319,000	44,752,000
Corporate Debt Securities [Member] | Fair Value, Measurements, Recurring [Member]
2014
Available For Sale Securities	47,319,000	44,752,000
Corporate Debt Securities [Member]
2014
Available For Sale Securities	47,318,719	44,751,700
Equity Securities, Financial Industry Common Stock [Member] | Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
2014
Available For Sale Securities	758,000	841,000
Equity Securities, Financial Industry Common Stock [Member] | Fair Value, Measurements, Recurring [Member]
2014
Available For Sale Securities	758,000	841,000
Equity Securities, Financial Industry Common Stock [Member]
2014
Available For Sale Securities	758,100	840,900
Equity Securities, Other [Member] | Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
2014
Available For Sale Securities	2,909,000	2,902,000
Equity Securities, Other [Member] | Fair Value, Measurements, Recurring [Member]
2014
Available For Sale Securities	2,909,000	2,902,000
Equity Securities, Other [Member]
2014
Available For Sale Securities	2,909,400	2,902,600
Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
2014
Available For Sale Securities	2,206,000	841,000
Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
2014
Available For Sale Securities	540,296,000	579,198,000
Fair Value, Measurements, Recurring [Member]
2014
Available For Sale Securities	$542,502,000	$580,039,000

Note_16_Fair_Value_Measurement3

Note 16 - Fair Value Measurements (Details) - Assets Measured at Fair Value on a Nonrecurring Basis (USD $)	Dec. 31, 2014	Dec. 31, 2013
Fair Value, Inputs, Level 2 [Member]
2014
Loans receivable	$656,896,000	$562,073,000
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Nonrecurring [Member]
2014
Loans receivable	692,000	648,000
Other real estate owned	8,436,000	8,861,000
Total	9,128,000	9,509,000
Fair Value, Measurements, Nonrecurring [Member]
2014
Loans receivable	692,000	648,000
Other real estate owned	8,436,000	8,861,000
Total	$9,128,000	$9,509,000

Note_16_Fair_Value_Measurement4

Note 16 - Fair Value Measurements (Details) - Fair Value Quantitative Information (Fair Value, Inputs, Level 3 [Member], USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Evaluation Of Collateral [Member] | Impaired Loan [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets fair value disclosure (in Dollars)	$692,000	$648,000
Range
Appraisal Valuation [Member] | Other Real Estate Owned [Member] | Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Range	4.00%	6.00%
Appraisal Valuation [Member] | Other Real Estate Owned [Member] | Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Range	10.00%	10.00%
Appraisal Valuation [Member] | Other Real Estate Owned [Member] | Weighted Average [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Range	-7.00%	-8.00%
Appraisal Valuation [Member] | Other Real Estate Owned [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets fair value disclosure (in Dollars)	$8,436,000	$8,861,000

Note_16_Fair_Value_Measurement5

Note 16 - Fair Value Measurements (Details) - Estimated Fair Values of Financial Instruments (USD $)	Dec. 31, 2014	Dec. 31, 2013
Financial assets:
Cash and due from banks	$23,730,257	$24,270,031
Federal funds sold	6,000
Interest bearing deposits	31,463,382	23,628,117
Securities available-for-sale	542,502,381	580,039,080
Loans receivable, net	658,440,998	564,501,547
Loans held for sale	704,850	295,618
Accrued income receivable	7,471,023	7,437,673
Financial liabilities:
Deposits	1,052,123,257	1,011,803,178
Securities sold under agreements to repurchase and federal funds purchased	13,921,000
FHLB advances	14,467,737
Fair Value, Inputs, Level 1 [Member]
Financial assets:
Cash and due from banks	23,730,257	24,270,031
Cash and due from banks	23,730,000	24,270,000
Federal funds sold	6,000
Interest bearing deposits	31,463,382	23,628,117
Interest bearing deposits	31,463,000	23,628,000
Accrued income receivable	7,471,023	7,437,673
Accrued income receivable	7,471,000	7,438,000
Financial liabilities:
Securities sold under agreements to repurchase and federal funds purchased	51,265,011	39,616,644
Securities sold under agreements to repurchase and federal funds purchased	51,265,000	39,617,000
Accrued interest payable	536,370	594,223
Fair Value, Inputs, Level 2 [Member]
Financial assets:
Loans receivable, net	658,440,998	564,501,547
Loans receivable, net	656,896,000	562,073,000
Loans held for sale	704,850	295,618
Loans held for sale	705,000	296,000
Financial liabilities:
Deposits	1,052,123,257	1,011,803,178
Deposits	1,052,082,000	1,014,150,000
FHLB advances	14,467,737	14,540,526
FHLB advances	15,281,000	15,441,000
Other borrowings	23,000,000	20,000,000
Other borrowings	$24,339,000	$22,033,000

Note_18_Ames_National_Corporat2

Note 18 - Ames National Corporation (Parent Company Only) Financial Statements (Details) - Condensed Balance Sheets (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
ASSETS
Cash and due from banks	$23,730,257	$24,270,031
Interest bearing deposits in banks	31,463,382	23,628,117
Securities available-for-sale	542,502,381	580,039,080
Loans receivable, net	658,440,998	564,501,547
Premises and equipment, net	15,956,989	11,892,329
Accrued income receivable	7,471,023	7,437,673
Deferred income taxes	2,633,177	5,027,103
Other assets	1,223,328	501,242
Total assets	1,301,030,717	1,233,084,160
LIABILITIES
Dividends payable	1,675,964	1,489,746
Accrued expenses and other liabilities	3,824,330	3,527,882
Total liabilities	1,146,356,299	1,090,977,976
STOCKHOLDERS' EQUITY
Common stock	18,621,826	18,865,830
Additional paid-in capital	20,878,728	22,651,222
Retained earnings	110,701,847	102,154,498
Accumulated other comprehensive income	4,472,017	451,132
Treasury stock		-2,016,498
Total stockholders' equity	154,674,418	142,106,184	144,735,735	134,557,385
Total liabilities and stockholders' equity	1,301,030,717	1,233,084,160
Parent Company [Member]
ASSETS
Cash and due from banks	29,972	24,591	31,189	39,366
Interest bearing deposits in banks	7,615,497	8,373,009
Securities available-for-sale	758,100	840,900
Investment in bank subsidiaries	141,553,283	130,167,386
Loans receivable, net	3,252,197	3,348,973
Premises and equipment, net	3,180,973	533,513
Accrued income receivable	9,435	17,747
Deferred income taxes	88,092	477,256
Other assets	242,417	99,930
Total assets	156,729,966	143,883,305
LIABILITIES
Dividends payable	1,675,964	1,489,746
Accrued expenses and other liabilities	379,584	287,375
Total liabilities	2,055,548	1,777,121
STOCKHOLDERS' EQUITY
Common stock	18,621,826	18,865,830
Additional paid-in capital	20,878,728	22,651,222
Retained earnings	110,701,847	102,154,498
Accumulated other comprehensive income	4,472,017	451,132
Treasury stock		-2,016,498
Total stockholders' equity	154,674,418	142,106,184
Total liabilities and stockholders' equity	$156,729,966	$143,883,305

Note_18_Ames_National_Corporat3

Note 18 - Ames National Corporation (Parent Company Only) Financial Statements (Details) - Condensed Statements of Income (USD $)	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Operating income:
Gain on the sale of premises and equipment									$1,239,581		($86,116)
Credit for loan losses									429,140	786,390	22,277
Income before income taxes	4,162,172	5,124,742	5,268,576	6,311,236	4,510,841	5,007,983	4,297,554	4,795,188	20,866,726	18,611,566	18,929,951
Income tax expense (benefit)	1,023,465	1,393,256	1,413,653	1,785,145	1,133,894	1,295,916	1,018,858	1,209,254	5,615,519	4,657,922	4,747,643
Net income	3,138,707	3,731,486	3,854,923	4,526,091	3,376,947	3,712,067	3,278,696	3,585,934	15,251,207	13,953,644	14,182,308
Parent Company [Member]
Operating income:
Equity in net income of bank subsidiaries									14,912,849	14,159,629	14,212,775
Interest									207,230	267,928	505,918
Dividends									26,400	22,800	20,400
Rental income									121,441	117,303	118,545
Gain on the sale of premises and equipment									1,256,924
Other income									1,525,000	1,487,581	1,364,000
Securities (losses), net											-83,180
									18,049,844	16,055,241	16,138,458
Credit for loan losses										-77,000	-224,000
Operating income after credit for loan losses									18,049,844	16,132,241	16,362,458
Operating expenses									2,609,937	2,313,897	2,208,650
Income before income taxes									15,439,907	13,818,344	14,153,808
Income tax expense (benefit)									188,700	-135,300	-28,500
Net income									$15,251,207	$13,953,644	$14,182,308

Note_18_Ames_National_Corporat4

Note 18 - Ames National Corporation (Parent Company Only) Financial Statements (Details) - Condensed Statements of Cash Flows (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$15,251,207	$13,953,644	$14,182,308
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	892,400	797,715	787,837
Credit for loan losses	429,140	786,390	22,277
Provision (credit) for deferred income taxes	32,455	-420,050	-182,328
Securities (gains), net	-1,110,953	-1,002,920	-646,755
Other-than-temporary impairment of securities available-for-sale	0	0	259,851
Gain on sale of premises and equipment	-1,239,581		86,116
Decrease in accrued income receivable	196,982	-263,970	-191,434
(Increase) decrease in other assets	17,711	1,940,557	666,973
Increase in accrued expense and other liabilities	-655,991	-47,850	13,137
Net cash provided by operating activities	19,508,156	23,525,380	22,011,765
CASH FLOWS FROM INVESTING ACTIVITIES
Proceeds from sale of securities available-for-sale	47,315,935	47,513,022	23,017,275
Proceeds from maturities and calls of securities available-for-sale	69,892,969	103,007,610	117,220,814
(Increase) decrease in interest bearing deposits in banks	-2,116,265	21,010,916	-10,897,627
(Increase) decrease in loans	-49,788,756	-54,934,159	-27,018,212
Proceeds from sale of bank premises and equipment	265,694	626,596	1,242,582
Purchase of bank premises and equipment	-1,590,308	-445,785	-863,375
Net cash used in investing activities	16,184,162	-47,922,584	-76,955,038
CASH FLOWS FROM FINANCING ACTIVITIES
Dividends paid	-6,517,640	-5,865,866	-5,400,339
Net cash used in financing activities	-36,232,092	13,861,864	66,919,353
Net increase (decrease) in cash and cash equivalents	-539,774	-10,535,340	11,976,080
CASH AND DUE FROM BANKS
Beginning	24,270,031
Ending	23,730,257	24,270,031
Parent Company [Member]
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	15,251,207	13,953,644	14,182,308
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	63,020	22,297	39,116
Credit for loan losses		-77,000	-224,000
Amortization, net			52,200
Provision (credit) for deferred income taxes	419,800	-11,879	47,138
Securities (gains), net			-176,671
Other-than-temporary impairment of securities available-for-sale			259,851
Gain on sale of premises and equipment	-1,256,924
Equity in net income of bank subsidiaries	-14,912,849	-14,159,629	-14,212,775
Dividends received from bank subsidiaries	7,600,000	7,200,000	8,428,000
Decrease in accrued income receivable	8,312	12,243	52,430
(Increase) decrease in other assets	-142,487	-84,930	100,000
Increase in accrued expense and other liabilities	92,209	28,440	81,958
Net cash provided by operating activities	7,122,289	6,883,186	8,629,555
CASH FLOWS FROM INVESTING ACTIVITIES
Proceeds from sale of securities available-for-sale			3,030,867
Proceeds from maturities and calls of securities available-for-sale			416,002
(Increase) decrease in interest bearing deposits in banks	757,512	-5,377,200	1,850,388
(Increase) decrease in loans	96,776	4,363,136	-487,821
Proceeds from sale of bank premises and equipment	1,746,444
Purchase of bank premises and equipment	-3,200,000	-9,854	-29,226
Investment in bank subsidiaries			-8,017,613
Net cash used in investing activities	-599,268	-1,023,918	-3,237,403
CASH FLOWS FROM FINANCING ACTIVITIES
Dividends paid	-6,517,640	-5,865,866	-5,400,329
Net cash used in financing activities	-6,517,640	-5,865,866	-5,400,329
Net increase (decrease) in cash and cash equivalents	5,381	-6,598	-8,177
CASH AND DUE FROM BANKS
Beginning	24,591	31,189	39,366
Ending	29,972	24,591	31,189
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION
Cash receipts for income taxes	$85,362	$27,089	$149,519

Note_19_Selected_Quarterly_Fin2

Note 19 - Selected Quarterly Financial Data (Unaudited) (Details) - Selected Quarterly Financial Data (Unaudited) (USD $)	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Selected Quarterly Financial Data (Unaudited) [Abstract]
Total interest income	$10,778,012	$10,120,151	$10,145,907	$9,920,281	$9,905,433	$9,750,476	$9,401,263	$9,376,641	$40,964,351	$38,433,813	$38,071,738
Total interest expense	1,091,521	1,102,532	1,166,552	1,186,496	1,249,137	1,239,335	1,294,540	1,291,751	4,547,101	5,074,763	5,751,941
Net interest income	9,686,491	9,017,619	8,979,355	8,733,785	8,656,296	8,511,141	8,106,723	8,084,890	36,417,250	33,359,050	32,319,797
Provision for loan losses	299,120	55,145	35,644	39,231	620,428	92,388	60,000	13,574	429,140	786,390	22,277
Net interest income after provision for loan losses	9,387,371	8,962,474	8,943,711	8,694,554	8,035,868	8,418,753	8,046,723	8,071,316	35,988,110	32,572,660	32,297,520
Noninterest income	2,743,633	1,828,690	1,733,972	2,945,784	1,966,057	1,819,733	2,089,020	1,842,968	9,252,079	7,717,778	7,435,384
Noninterest expense	7,968,832	5,666,422	5,409,107	5,329,102	5,491,084	5,230,503	5,838,189	5,119,096	24,373,463	21,678,872	20,802,953
Income before income taxes	4,162,172	5,124,742	5,268,576	6,311,236	4,510,841	5,007,983	4,297,554	4,795,188	20,866,726	18,611,566	18,929,951
Income tax expense	1,023,465	1,393,256	1,413,653	1,785,145	1,133,894	1,295,916	1,018,858	1,209,254	5,615,519	4,657,922	4,747,643
Net income	$3,138,707	$3,731,486	$3,854,923	$4,526,091	$3,376,947	$3,712,067	$3,278,696	$3,585,934	$15,251,207	$13,953,644	$14,182,308
Basic and diluted earnings per common share (in Dollars per share)	$0.34	$0.40	$0.41	$0.49	$0.36	$0.40	$0.35	$0.39	$1.64	$1.50	$1.52