MidWestOne Financial (MOFG) 10-K 6 Mar 14 2013 FY Annual report Financial data

Document_and_Entity_Informatio

Document and Entity Information Document (USD $)	12 Months Ended
In Millions, except Share data, unless otherwise specified	Dec. 31, 2013	Mar. 04, 2014	Jun. 30, 2013
Entity Information [Line Items]	'	'	'
Entity Registrant Name	'MIDWESTONE FINANCIAL GROUP, INC.	'	'
Entity Central Index Key	'0001412665	'	'
Current Fiscal Year End Date	'--12-31	'	'
Entity Filer Category	'Accelerated Filer	'	'
Document Type	'10-K	'	'
Document Period End Date	31-Dec-13	'	'
Document Fiscal Year Focus	'2013	'	'
Document Fiscal Period Focus	'FY	'	'
Amendment Flag	'false	'	'
Entity Current Reporting Status	'Yes	'	'
Entity Voluntary Filers	'No	'	'
Entity Well-known Seasoned Issuer	'No	'	'
Entity Public Float	'	'	$163
Entity Common Stock, Shares Outstanding	'	8,471,761	'

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Assets:	'	'
Cash and due from banks	$24,516	$30,197
Interest-bearing deposits in banks	374	16,242
Federal funds sold	0	752
Cash and cash equivalents	24,890	47,191
Investment securities:	'	'
Available for sale	498,561	557,541
Held to maturity (fair value of $30,191 as of December 31, 2013 and $32,920 as of December 31, 2012)	32,625	32,669
Loans held for sale	357	1,195
Loans	1,088,412	1,035,284
Allowance for loan losses	-16,179	-15,957
Net loans	1,072,233	1,019,327
Loan pool participations, net	25,533	35,650
Premises and equipment, net	27,682	25,609
Accrued interest receivable	10,409	10,292
Intangible assets, net	8,806	9,469
Bank-owned life insurance	29,598	28,676
Other real estate owned	1,770	3,278
Assets held for sale	0	764
Deferred income taxes	8,194	776
Other assets	14,560	20,382
Total assets	1,755,218	1,792,819
Deposits:	'	'
Non-interest-bearing demand	222,359	190,491
Interest-bearing checking	592,673	582,283
Savings	94,559	91,603
Certificates of deposit under $100,000	256,283	312,489
Certificates of deposit $100,000 and over	209,068	222,867
Total deposits	1,374,942	1,399,733
Federal funds purchased	5,482	0
Securities sold under agreements to repurchase	61,183	68,823
Federal Home Loan Bank borrowings	106,900	120,120
Deferred compensation liability	3,469	3,555
Long-term debt	15,464	15,464
Accrued interest payable	765	1,475
Other liabilities	8,997	9,717
Total liabilities	1,577,202	1,618,887
Shareholders' Equity:	'	'
Preferred stock, no par value; authorized 500,000 shares; no shares issued and outstanding at December 31, 2013 and December 31, 2012	0	0
Common stock, $1.00 par value; authorized 15,000,000 shares at December 31, 2013 and December 31, 2012; issued 8,690,398 shares at December 31, 2013 and December 31, 2012; outstanding 8,481,799 shares at December 31, 2013 and 8,480,488 shares at December 31, 2012	8,690	8,690
Additional paid-in capital	80,506	80,383
Treasury stock at cost, 208,599 shares as of December 31, 2013 and 209,910 shares at December 31, 2012	-3,702	-3,316
Retained earnings	91,473	77,125
Accumulated other comprehensive income	1,049	11,050
Total shareholders’ equity	178,016	173,932
Total liabilities and shareholders’ equity	$1,755,218	$1,792,819

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets Parenthetical Parentheticals (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, except Share data, unless otherwise specified
Statement of Financial Position [Abstract]	'	'
Fair value of investment securities held to maturity	$30,191	$32,920
Shareholders' equity:	'	'
Preferred stock, par value	$0	$0
Preferred stock, shares authorized	500,000	500,000
Preferred stock, shares issued	0	0
Common stock, par value	$1	$1
Common stock, shares authorized	15,000,000	15,000,000
Common stock, shares issued	8,690,398	8,690,398
Common stock, shares outstanding	8,481,799	8,480,488
Shares of Treasury stock	208,599	209,910

Consolidated_Statements_of_Ope

Consolidated Statements of Operations (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Interest income:	'	'	'
Interest and fees on loans	$48,828	$51,355	$52,163
Interest and discount on loan pool participations	2,046	1,978	1,108
Interest on bank deposits	16	54	36
Interest on federal funds sold	1	1	1
Interest on investment securities:	'	'	'
Taxable securities	9,905	10,836	10,934
Tax-exempt securities	5,298	5,078	4,339
Total interest income	66,094	69,302	68,581
Interest expense:	'	'	'
Interest-bearing checking	2,362	3,007	3,891
Savings	140	143	200
Certificates of deposit under $100,000	4,239	5,885	7,920
Certificates of deposit $100,000 and over	2,214	2,929	3,311
Total interest expense on deposits	8,955	11,964	15,322
Interest on federal funds purchased	38	12	8
Interest on securities sold under agreements to repurchase	128	192	264
Interest on Federal Home Loan Bank borrowings	2,686	3,094	3,494
Interest on other borrowings	29	34	38
Interest on long-term debt	296	656	657
Total interest expense	12,132	15,952	19,783
Net interest income	53,962	53,350	48,798
Provision for loan losses	1,350	2,379	3,350
Net interest income after provision for loan losses	52,612	50,971	45,448
Noninterest income:	'	'	'
Trust, investment, and insurance fees	5,345	4,995	4,537
Service charges and fees on deposit accounts	2,980	3,247	3,702
Mortgage origination and loan servicing fees	3,209	3,578	2,691
Other service charges, commissions and fees	2,210	2,316	2,540
Bank-owned life insurance income	922	953	951
Impairment losses on investment securities	0	-345	-9
Gain on sale or call of available for sale securities (Includes $65 reclassified from accumulated other comprehensive income for net gains on available for sale securities for the year ended December 31, 2013)	65	805	490
Gain (loss) on sale of premises and equipment	-3	4,188	-195
Total noninterest income	14,728	19,737	14,707
Noninterest expense:	'	'	'
Salaries and employee benefits	24,596	30,684	23,194
Net occupancy and equipment expense	6,356	6,246	6,537
Professional fees	2,622	2,758	2,825
Data processing expense	1,452	1,679	1,670
FDIC Insurance expense	1,066	1,224	1,612
Amortization of intangible assets	663	778	896
Other operating expense	5,332	5,591	5,501
Total noninterest expense	42,087	48,960	42,235
Income before income tax expense	25,253	21,748	17,920
Income tax expense (Includes $25 income tax expense reclassified from accumulated other comprehensive income for the year ended December 31, 2013)	6,646	5,214	4,609
Net income	18,607	16,534	13,311
Less: Preferred stock dividends and discount accretion	'	'	645
Net income available to common shareholders	$18,607	$16,534	$12,666
Earnings per share:	'	'	'
Earnings per share, basic	$2.19	$1.95	$1.47
Earnings per share, diluted	$2.18	$1.94	$1.47

Consolidated_Statements_of_Ope1

Consolidated Statements of Operations Parenthetical Parentheticals (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013
Income Statement [Abstract]	'
Accumulated other comprehensive income reclassifications for unrealized net gains on available for sale securities	$65
Income tax expense from reclassification items	$25

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Income (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Net income	$18,607	$16,534	$13,311
Investment securities avalable for sale:	'	'	'
Unrealized holding gains (losses) arising during period	-15,920	2,681	11,827
Reclassification adjustment for gains included in net income	-65	-805	-490
Income tax (expense) benefit	-5,984	706	4,230
Other comprehensive income (loss) on available for sale securities	-10,001	1,170	7,107
Defined benefit pension:	'	'	'
Reclassification of pension plan expense due to plan settlement	'	5,968	0
Net loss arising during period	0	0	-2,970
Amortization of net actuarial gains included in net periodic pension cost	0	0	155
Amortization of transition obligation included in net periodic pension cost	0	0	-41
Income tax (expense) benefit	'	-2,226	1,065
Other comprehensive income (loss) on defined benefit pension plan	0	-3,742	1,791
Total other comprehensive income (loss)	-10,001	4,912	5,316
Comprehensive income	$8,606	$21,446	$18,627

Consolidated_Statements_of_Sha

Consolidated Statements of Shareholders' Equity (USD $)	Total	Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Treasury Stock [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
In Thousands
Balance at Dec. 31, 2010	$158,466	$15,767	$8,690	$81,268	($1,052)	$52,971	$822
Net income	13,311	'	'	'	'	13,311	'
Dividends paid on common stock	-1,891	'	'	'	'	-1,891	'
Dividends paid on preferred stock	-513	'	'	'	'	-513	'
Stock options exercised	80	'	'	-17	97	'	'
Release/lapse of restriction on RSUs	3	'	'	-138	141	'	'
Redemption of preferred stock	-16,000	-16,000	'	'	'	'	'
Repurchase of common stock warrant	-1,000	'	'	-1,000	'	'	'
Repurchase of common stock	-1,498	'	'	'	-1,498	'	'
Preferred stock discount accretion	'	233	'	'	'	-233	'
Stock compensation	220	'	'	220	'	'	'
Other Comprehensive Income (Loss), Net of Tax	5,316	'	'	'	'	'	5,316
Balance at Dec. 31, 2011	156,494	0	8,690	80,333	-2,312	63,645	6,138
Net income	16,534	'	'	'	'	16,534	'
Dividends paid on common stock	-3,054	'	'	'	'	-3,054	'
Stock options exercised	577	'	'	-16	593	'	'
Release/lapse of restriction on RSUs	13	'	'	-200	213	'	'
Repurchase of common stock	-1,810	'	'	'	-1,810	'	'
Stock compensation	266	'	'	266	'	'	'
Other Comprehensive Income (Loss), Net of Tax	4,912	'	'	'	'	'	4,912
Balance at Dec. 31, 2012	173,932	0	8,690	80,383	-3,316	77,125	11,050
Net income	18,607	'	'	'	'	18,607	'
Dividends paid on common stock	-4,259	'	'	'	'	-4,259	'
Stock options exercised	305	'	'	9	296	'	'
Release/lapse of restriction on RSUs	15	'	'	-270	285	'	'
Repurchase of common stock	-967	'	'	'	-967	'	'
Stock compensation	384	'	'	384	'	'	'
Other Comprehensive Income (Loss), Net of Tax	-10,001	'	'	'	'	'	-10,001
Balance at Dec. 31, 2013	$178,016	$0	$8,690	$80,506	($3,702)	$91,473	$1,049

Consolidated_Statements_of_Sha1

Consolidated Statements of Shareholders' Equity Parenthetical Parentheticals (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Statement of Stockholders' Equity [Abstract]	'	'	'
Dividends paid on common stock (per share)	$0.50	$0.36	$0.22
Stock options exercised (shares)	56,314	55,986	6,832
Release/lapse of restriction on RSUs (shares)	19,585	15,810	10,850
Redemption of preferred stock (shares)	0	0	16,000
Repurchase of common stock (shares)	40,713	104,518	102,190

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Cash flows from operating activities:	'	'	'
Net income	$18,607	$16,534	$13,311
Adjustments to reconcile net income to net cash provided by operating activities:	'	'	'
Provision for loan losses	1,350	2,379	3,350
Depreciation, amortization and accretion	5,162	5,422	5,322
(Gain) loss on sale of premises and equipment	3	-4,188	195
Deferred income taxes	-1,454	-54	-389
Stock based compensation	384	266	220
Net gain on sale or call of available for sale securities	-65	-805	-490
Net (gain) loss on sale of other real estate owned	115	-196	-194
Net gain on sale of loans held for sale	-1,237	-2,157	-1,324
Writedown of other real estate owned	33	326	132
Other-than-temporary impairment of investment securities	0	345	9
Origination of loans held for sale	82,282	152,389	108,846
Proceeds from sales of loans held for sale	84,357	155,306	108,917
Recognition of previously deferred expense related to pension plan settlement	'	3,002	'
Pension plan contribution	'	-3,031	'
(Increase) decrease in accrued interest receivable	-117	130	226
Increase in cash value of bank-owned life insurance	-922	-953	-951
Decrease (increase) in other assets	5,822	1,280	-1,714
Decrease in deferred compensation liability	-86	-88	-69
(Decrease) increase in accounts payable, accrued expenses, and other liabilities	-1,410	1,409	6,030
Net cash provided by operating activities	28,260	22,538	23,735
Cash flows from investing activities	'	'	'
Proceeds from sales of available for sale investment securities	12,447	18,307	'
Proceeds from maturities and calls of available for sale securities	103,200	130,432	135,954
Purchase of available for sale investment securities	-74,582	-172,060	-198,364
Proceeds from maturities and calls of held to maturity securities	1,232	722	2,000
Purchases of held to maturity securities	-1,185	-31,348	'
Increase in loans	-54,477	-53,560	-52,848
Decrease in loan pool participations, net	10,117	14,402	15,819
Purchase of premises and equipment, net	-4,521	-3,518	-2,749
Proceeds from sale of other real estate owned	1,581	2,976	1,748
Proceeds from sales of premises and equipment	18	5,244	297
Proceeds from sale of assets held for sale	764	'	'
Net cash used in investing activities	-5,406	-88,403	-98,143
Cash flows from financing activities:	'	'	'
Net (decrease) increase in deposits	-24,791	93,091	87,314
Net increase (decrease) in federal funds purchased	5,482	-8,920	8,920
Net (decrease) increase in securities sold under agreements to repurchase	-7,640	20,536	-1,907
Proceeds from Federal Home Loan Bank borrowings	166,000	20,000	56,000
Repayment of Federal Home Loan Bank borrowings	-179,300	-40,000	-43,000
Stock options exercised	320	590	83
Dividends paid	-4,259	-3,054	-2,404
Repurchase of common stock	-967	-1,810	-1,498
Redemption of preferred stock	'	'	-16,000
Repurchase of common stock warrant	'	'	-1,000
Net cash (used in) provided by financing activities	-45,155	80,433	86,508
Net (decrease) increase in cash and cash equivalents	-22,301	14,568	12,100
Cash and cash equivalents:	'	'	'
Cash and cash equivalents at beginning of period	47,191	32,623	20,523
Cash and cash equivalents at end of period	24,890	47,191	32,623
Supplemental disclosures of cash flow information:	'	'	'
Cash payments for interest paid on deposits and borrowings	12,842	16,007	20,124
Cash payments for income taxes	7,961	5,169	4,172
Transfer of loans to other real estate owned	221	2,351	1,869
Transfer of property to assets held for sale	'	$764	'

Principles_of_Consolidation_an

Principles of Consolidation and Presentation	12 Months Ended
	Dec. 31, 2013
Principles of Consolidation and Presentation [Abstract]	'
Organization, Consolidation, Basis of Presentation, Business Description and Accounting Policies [Text Block]	'
	Nature of Business and Significant Accounting Policies
	Nature of business: The Company is a bank holding company registered under the Bank Holding Company Act of 1956 that has elected to be a financial holding company. It is headquartered in Iowa City, Iowa and owns 100% of the outstanding common stock of MidWestOne Bank, Iowa City, and 100% of the common stock of MidWestOne Insurance Services, Inc., Oskaloosa, Iowa. MidWestOne Bank (the “Bank”) is also headquartered in Iowa City, Iowa, and provides services to individuals, businesses, governmental units and institutional customers in central and east-central Iowa. The Bank has office locations in Belle Plaine, Burlington, Cedar Falls, Conrad, Coralville, Davenport, Fairfield, Fort Madison, Melbourne, North English, North Liberty, Oskaloosa, Ottumwa, Parkersburg, Pella, Sigourney, Waterloo and West Liberty, Iowa. MidWestOne Insurance Services, Inc. provides personal and business insurance services in Pella, Melbourne and Oskaloosa, Iowa. The Bank is actively engaged in many areas of commercial banking, including: acceptance of demand, savings and time deposits; making commercial, real estate, agricultural and consumer loans, and other banking services tailored for its individual customers. The Wealth Management area of the Bank administers estates, personal trusts, conservatorships, pension and profit-sharing accounts along with providing other management services to customers.
	Accounting correction: During the quarter ended June 30, 2013, the Company identified an immaterial error in its accounting for other-than-temporary impairment on its portfolio of collateralized debt obligations. This error related to the identification of credit-related impairments subsequent to the Company's adoption of Financial Accounting Standards Board (FASB) Staff Position (FSP) No. FAS 115-2 and FAS 124-2, “Recognition and Presentation of Other-Than-Temporary Impairments” as of April 1, 2009.
	As a result, the Company has adjusted prior period amounts for the immaterial error. Specifically, on the Company's consolidated statement of shareholders' equity the balance of retained earnings was reduced by $2,654,000, from $66,299,000 to $63,645,000, and accumulated other comprehensive income was increased by $2,654,000, from $3,484,000 to $6,138,000, as of December 31, 2011, to reflect the effect of the error in the years ended December 31, 2009, 2010, and 2011. On the Company's consolidated balance sheets, retained earnings and accumulated other comprehensive income as of December 31, 2012, were decreased and increased, respectively, by $2,870,000. Of the adjustment amounts as of December 31, 2011 and 2012, $2,322,000 relates to the after-tax effect of credit impairments that should have been recognized in the Company's consolidated statements of operations for the year ended December 31, 2009.
	The correction also resulted in the following adjustments to historical amounts: (i) on the Company's consolidated statement of shareholders' equity, the balance of retained earnings was reduced by $2,648,000, from $55,619,000 to $52,971,000, and accumulated other comprehensive income was increased by $2,648,000, from $(1,826,000) to $822,000, as of December 31, 2010, to reflect the effect of the error in the years ended December 31, 2009 and 2010; (ii) on the Company's consolidated statements of operations, net income for the year ended December 31, 2011 was reduced $6,000, from $13,317,000 to $13,311,000, with no change in the reported basic or diluted earnings per share for such time period; (iii) on the Company's consolidated statements of operations, net income for the year ended December 31, 2012 was reduced $217,000, from $16,751,000 to $16,534,000, with basic earnings per share decreasing from $1.97 to $1.95 and diluted earnings per share decreasing from $1.96 to $1.94 during such period; (iv) corresponding adjustments to the Company's comprehensive income were made for the years ended December 31, 2012 and 2011; and (v) amounts in relevant footnotes for all periods presented have been corrected for the effects of this immaterial error.
	Accounting estimates: The preparation of financial statements in conformity with U.S. generally accepted accounting principles (“U.S. GAAP”) requires management to make estimates and assumptions that affect the reported amount of assets and liabilities and disclosure of contingent 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. The U.S. economic environment in recent years has increased the degree of uncertainty inherent in these estimates.
	Certain significant estimates: The allowance for loan losses and the fair values of investment securities and other financial instruments involve certain significant estimates made by management. These estimates are reviewed by management routinely and it is reasonably possible that circumstances that exist may change in the near-term future and that the effect could be material to the consolidated financial statements.
	Principles of consolidation: The consolidated financial statements include the accounts of MidWestOne Financial Group, Inc., a bank holding company, and its wholly-owned subsidiaries which include MidWestOne Bank, a state chartered bank whose primary federal regulator is the Federal Deposit Insurance Corporation, and MidWestOne Insurance Services, Inc. All significant inter-company accounts and transactions have been eliminated in consolidation.
	Trust assets, other than cash deposits held by the Bank in a fiduciary or agency capacity for its customers, are not included in the accompanying consolidated financial statements because such accounts are not assets of the Bank.
	In the normal course of business, the Company may enter into a transaction with a variable interest entity (“VIE”). VIEs are legal entities whose investors lack the ability to make decisions about the entity’s activities, or whose equity investors do not have the right to receive the residual returns of the entity. The applicable accounting guidance requires the Company to perform ongoing quantitative and qualitative analysis to determine whether it must consolidate any VIE. The Company does not have any ownership interest in or exert any control over any VIE, and thus no VIEs are included in the consolidated financial statements. Investments in non-marketable loan participation certificates for which the Company does not have the ability to exert significant influence are accounted for using the cost method.
	Presentation of cash flows: For purposes of reporting cash flows, cash and due from banks includes cash on hand, amounts due from banks, and federal funds sold. Cash flows from portfolio loans originated by the Bank, deposits, federal funds purchased, and securities sold under agreements to repurchase are reported net.
	Cash receipts and cash payments resulting from acquisitions and sales of loans originated for sale are classified as operating cash flows on a gross basis in the consolidated statements of cash flows.
	Investment securities: Certain debt securities that the Company has the positive intent and ability to hold to maturity are classified as held to maturity and recorded at amortized cost. Securities not classified as held to maturity, including equity securities with readily determinable fair values, are classified as available for sale and recorded at fair value, with unrealized gains and losses excluded from earnings and reported in other comprehensive income.
	The Company carries its investment securities at fair value, and the Company employs valuation techniques which utilize observable inputs when those inputs are available. These observable inputs reflect assumptions market participants would use in pricing the security, developed based on market data obtained from sources independent of the Company. When such information is not available, the Company employs valuation techniques which utilize unobservable inputs, or those which reflect the Company’s own assumptions about assumptions that market participants would use, based on the best information available in the circumstances. These valuation methods typically involve cash flow and other financial modeling techniques. Changes in underlying factors, assumptions, estimates, or other inputs to the valuation techniques could have a material impact on the Company’s future financial condition and results of operations. Fair value measurements are required to be classified as Level 1 (quoted prices), Level 2 (based on observable inputs) or Level 3 (based on unobservable inputs) discussed in more detail in Note 18 to the consolidated financial statements. Available for sale securities are recorded at fair value with unrealized gains and losses excluded from earnings and reported as a separate component of shareholders’ equity until realized.
	Purchase premiums and discounts are recognized in interest income using the interest method over the terms of the securities. Declines in the fair value of held to maturity and available for sale securities below their cost that are deemed to be other than temporary are reflected in earnings as realized losses. In determining whether other than temporary impairment exists, management considers whether: (1) we have the intent to sell the security; (2) it is more likely than not that we will be required to sell the security before recovery of the amortized cost basis; and (3) we do not expect to recover the entire amortized cost basis of the security. Gains and losses on the sale of securities are recorded on the trade date and are determined using the specific identification method.
	Loans: Loans are stated at the principal amount outstanding, net of deferred loan fees and costs and allowance for loan losses. Interest on loans is credited to income as earned based on the principal amount outstanding. Deferred loan fees and costs are amortized using the level yield method over the remaining maturities on the loans.
	The accrual of interest on mortgage and commercial loans is discontinued at the time the loan is 90 days past due, unless the credit is well secured and in process of collection. Credit card loans and other personal loans are typically charged off no later than 180 days past due. Past due status is based on contractual terms of the loan. In all cases, loans are placed on nonaccrual or charged off at an earlier date, if collection of principal or interest is considered doubtful.
	All interest accrued but not collected for loans that are placed on nonaccrual or charged off is reversed against interest income. The interest on these loans is accounted for on the cash-basis or cost-recovery method, until qualifying for return to accrual. Loans are returned to accrual status when all the principal and interest amounts contractually due are brought current and future payments are reasonably assured.
	Loan Pool Participations: The Company acquired its loan pool participations from the Former MidwestOne during the merger and continued in this business following the merger. However, in 2010, the Company made the decision to exit this line of business and is thus not purchasing new loan pool participations as existing pools pay down. The pools consist of loans to borrowers located throughout the United States.
	The Company carries its investment in the loan pools as a separate earning asset on the consolidated balance sheets. Principal or interest restructures, write-downs, or write-offs within the pools are not included in the Company’s disclosures for its loan portfolio, and foreclosed property from loans associated with the pools is not included in other real estate owned on the consolidated balance sheets. The loan pool participations are managed by a non-affiliate servicer operating in Omaha, Nebraska.
	Each pool has a different composition and different characteristics. The composition of a loan pool is generally determined by the seller based on its desire to maximize the price it receives for all loans among the various pools. Many of the pools consist of loans primarily secured by single-family, multi-family, and small commercial real estate. Some pools may consist of a large number of small consumer loans that are secured by other assets such as automobiles or mobile homes, while other pools may consist of small- to medium-balance commercial loans. Some may contain a mixture of such loans and other types of loans.
	The Company invested in pools consisting of both performing loans and past-due nonperforming loans. The price bid and paid for such a loan pool was determined based on the composition of the particular pool, the amounts the servicer believed could be collected on such a pool, and the risks associated with the collection of such amounts.
	Upon the acquisition of a participation interest in a loan pool, the Company assumed the risk of loss on a pro-rata basis. The extent of such risk is dependent on a number of factors, including the servicer’s ability to locate the debtors, the debtors’ financial condition, the possibility that a debtor may file for protection under applicable bankruptcy laws, the servicer’s ability to locate the collateral, if any, for the loan and to obtain possession of such collateral, the value of such collateral, and the length of time it takes to realize the ultimate recovery either through collection procedures or through a resale of the loans following a restructure.
	A cost “basis” was assigned to each individual loan acquired on a cents-per-dollar (discounted price) basis based on the servicer’s assessment of the recovery potential of each such loan. This methodology assigns a higher basis to performing loans with greater potential collectability and a lower basis to those loans identified as having little or no potential for collection.
	Loan pool participations are shown on the Company’s consolidated balance sheets as a separate asset category. The original carrying value of loan pool participations represents the discounted price paid by the Company to acquire its participation interests in various loan pools purchased by the servicer. The Company’s investment balance is reduced as the servicer collects principal payments on the loans and remits the proportionate share of such payments to the Company, as well as for charge-offs of amounts determined to be uncollectible.
	The loan pool participations acquired are accounted for in accordance with the provisions of ASC Topic 310.
	ASC Topic 310 provides guidance on the accounting for purchased loans that show evidence of deterioration of credit quality since origination and for which it is probable, at acquisition, that the purchaser will be unable to collect all contractually required payments receivable. ASC Topic 310 generally requires that the excess of the estimated cash flows expected to be collected on the loan over the initial investment be accreted over the estimated remaining life of loan.
	According to ASC Topic 310, in order to apply the interest method of recognition to these types of loans, there must be sufficient information to reasonably estimate the amount and timing of the cash flows expected to be collected. When that is not the case, the loan should be accounted for as a nonaccrual status applying the cash basis income recognition to the loan.
	The Company developed and implemented procedures to determine if accretion of the discount (“accretable yield”) on the purchased loans in a pool is required under ASC Topic 310. Given the impaired nature of the loan pools typically purchased, the individual loans were evaluated for ASC Topic 310 purposes by the end of a six-month window from the date of purchase. This provided time to assess the quality of the loans and assign basis to each loan within the pool. Purchased loans were evaluated individually with a determination made utilizing various criteria including: past-due status, late payments, legal status of the loan (not in foreclosure, judgment against the borrower, or referred to legal counsel), frequency of payments made, collateral adequacy and the borrower’s financial condition. If all the criteria were met, the Company utilized the accounting treatment for that individual loan required by ASC Topic 310 with the accretable yield difference between the expected cash flows and the purchased basis accreted into income on the level yield basis over the anticipated life of the loan. If any of the six criteria were not met, the loan is accounted for on the cash-basis of accounting.
	In the event that a prepayment is received on a loan accounted for under ASC Topic 310, the accretable yield is recomputed and the revised amount accreted over the estimated remaining life of the loan on the level yield basis. If a loan subject to accretable yield under ASC Topic 310 fails to make timely payments, it is subject to classification and an allowance for loss would be established.
	Collection expenses incurred by the servicer are netted against discount income. Discount income is added to interest income and reflected as one amount on the Company’s consolidated statements of operations.
	Interest income is only recognized when collected and actually remitted to the Company by the servicer for those loans subject to nonaccrual status in accordance with ASC Topic 310. Many of the pools that have been purchased by the servicer do not include purchased interest in the cost basis; thus, interest collected does not have a cost basis and represents profit. Interest income collected by the servicer is reflected in the Company’s consolidated financial statements as interest income and is included as part of interest and discount on loan pool participations.
	Loans held for sale: Loans originated and intended for sale in the secondary market are carried at the lower of aggregate cost or estimated fair value, as determined by aggregate outstanding commitments from investors or current investor yield requirements. Net unrealized losses, if any, are recognized through a valuation allowance by charges to income.
	Mortgage loans held for sale are generally sold with the mortgage servicing rights retained. Gains or losses on sales of mortgage loans are recognized based on the difference between the selling price plus the value of servicing rights, less the carrying value of the related mortgage loans sold.
	Allowance for loan losses: The allowance for loan losses is established as losses estimated to have been incurred through a provision for loan losses charged to earnings. Loan losses are charged against the allowance when management believes the uncollectibility of a loan balance is confirmed. Subsequent recoveries, if any, are credited to the allowance.
	The allowance for loan losses is evaluated on a quarterly basis by management and is based upon management’s periodic review of the collectiblity of the loans in light of historical experience, the nature and volume of the loan portfolio, adverse situations that may affect the borrower’s ability to repay, estimated value of any underlying collateral and prevailing economic conditions. This evaluation is inherently subjective, as it requires estimates that are susceptible to significant revision as more information becomes available.
	The allowance consists of specific, general and unallocated components. The specific component relates to loans that are classified as doubtful, substandard or special mention. For such loans that are also classified as impaired as well as any loan (regardless of classification) meeting the definition of a troubled debt restructuring, an allowance is established when the discounted cash flows (or collateral value or observable market price) of the impaired loan are lower than the carrying value of that loan. The general component covers loans not classified as impaired and is based on historical loss experience adjusted for qualitative factors. An unallocated component is maintained to cover uncertainties that could affect management’s estimate of probable losses. The unallocated component of the allowance reflects that margin of imprecision inherent in the underlying assumptions used in the methodologies for estimating specific and general losses in the portfolio.
	A loan is considered impaired when, based on current information and events, it is probable that the Bank 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. Loans that experience insignificant payment delays and payment shortfalls generally are not classified as impaired. Management determines the significance of payment delays and payment shortfalls on a case-by-case basis, taking into consideration all of the circumstances surrounding the loan and the borrower, including the length of the delay, the reasons for the delay, the borrower’s prior payment record and the amount of the shortfall in relation to the principal and interest owed. Impairment is measured on a loan-by-loan basis by either the present value of expected future cash flows discounted at the loan’s effective interest rate, the loan’s observable market price or the fair value of the collateral, if the loan is collateral dependent.
	Large groups of smaller-balance, homogeneous loans are collectively evaluated for impairment. Accordingly, the Bank generally does not separately identify individual consumer and residential loans for impairment unless they meet the definition of a troubled debt restructure.
	Transfers of financial assets: Revenue from the origination and sale of loans in the secondary market is recognized upon the transfer of financial assets and accounted for as sales when control over the assets has been surrendered. The Bank also sells participation interests in some large loans originated, to non-affiliated entities. Control over transferred assets is deemed to be surrendered when: (1) the assets have been isolated from the Bank and its affiliates; (2) the transferee has the right to pledge or exchange the assets it received and no condition both constrains the transferee from taking advantage of its right to pledge or exchange and provides more than a trivial benefit to the transferor; and (3) the Bank and its affiliates do not maintain effective control over the transferred assets through an agreement to repurchase them before their maturity or the ability to unilaterally cause the holder to return specific assets.
	Revenue recognition: Trust fees, deposit account service charges and other fees are recognized when payment is received for the services (cash basis), which generally occurs at the time the services are provided.
	Credit-related financial instruments: In the ordinary course of business, the Bank has entered into commitments to extend credit, including commitments under credit card arrangements, commercial letters of credit and standby letters of credit. Such financial instruments are recorded when they are funded. The Bank records a liability to the extent losses on its commitments to lend are probable.
	Premises and equipment: Land is carried at cost. Premises and equipment are stated at cost less accumulated depreciation. The estimated useful lives and primary method of depreciation for the principal items are as follows:
		Years
	Type of Assets	Minimum		Maximum	Depreciation Method
	Buildings and leasehold improvements	10	-	30	Straight-line
	Furniture and equipment	3	-	10	Straight-line
	Charges for maintenance and repairs are expensed as incurred. When assets are retired or disposed of the related cost and accumulated depreciation are removed from the respective accounts and the resulting gain or loss is recorded.
	Other real estate owned: Other real estate owned acquired in satisfaction of loans is recorded at the lower of cost or fair value less estimated costs of disposal. When a property is acquired, the excess of the recorded investment in the property over its estimated fair value, less estimated costs of disposal, if any, is charged to the allowance for loan losses.
	Subsequent declines in the estimated fair value are recorded in a valuation allowance account. Additions to or reductions from valuation allowances, along with net operating results of the property, are included in other operating expenses.
	Mortgage servicing rights: Mortgage servicing rights are recorded at fair value based on assumptions through a third-party valuation service. The valuation model incorporates assumptions that market participants would use in estimating future net servicing income, such as the servicing cost per loan, the discount rate, the escrow float rate, an inflation rate, ancillary income, prepayment speeds and default rates and losses.
	Bank-owned life insurance: Bank-owned life insurance is carried at cash surrender value, net of surrender and other charges, with increases/decreases reflected as income/expense in the consolidated statements of operations.
	Employee benefit plans: Deferred benefits under a salary continuation plan are charged to expense during the period in which the participating employees attain full eligibility.
	Stock-based compensation: Compensation expense for share based awards is recorded over the vesting period at the fair value of the award at the time of grant. The exercise price of options or fair value of nonvested shares granted under the Company’s incentive plans is equal to the fair market value of the underlying stock at the grant date. The Company assumes no projected forfeitures on its stock based compensation, since actual historical forfeiture rates on its stock-based incentive awards has been negligible.
	Income taxes: The Company files a consolidated federal income tax return. Income tax expense is generally allocated as if the Company and its subsidiaries file separate income tax returns. For state purposes, the Bank files a franchise tax return and the remaining entities file a consolidated income tax return. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to temporary differences between the financial statement carrying amount of existing assets and liabilities and their respective tax bases. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect of a change in tax rates on deferred tax assets and liabilities is recognized in income in the period that includes the enactment date. Deferred tax assets are reduced by a valuation allowance when, in the opinion of management, it is more likely than not that some portion or all of the deferred tax assets will not be realized.
	There were no material unrecognized tax benefits or any interest or penalties on any unrecognized tax benefits as of December 31, 2013 and 2012.
	Any interest and penalties related to income taxes would be recorded as other operating expense in the consolidated statements of operations.
	Preferred stock: On February 6, 2009, the Company issued 16,000 shares of Fixed Rate Cumulative Perpetual Preferred Stock, Series A (“Preferred Stock”), together with a ten-year warrant to acquire 198,675 shares of common stock, to the U.S. Department of the Treasury (the “Treasury”) under the Capital Purchase Program (the “CPP”) for an aggregate purchase price of $16.0 million. Upon issuance, the fair values of the senior preferred stock and the common stock warrants were computed as if the securities were issued on a stand-alone basis.
	On July 6, 2011, the Company announced that it had repurchased the 16,000 shares of Preferred Stock issued to the Treasury under the CPP for an aggregate repurchase price of $16.1 million including accrued interest.
	On July 27, 2011, the Company announced that it had repurchased the common stock warrant issued to the Treasury as part of the CPP for $1.0 million. The warrant had allowed Treasury to purchase 198,675 shares of MidWestOne common stock at $12.08 per share.
	Common stock: On July 26, 2011, our Board of Directors authorized the implementation of a share repurchase program to repurchase up to $1.0 million of the Company’s outstanding shares of common stock through December 31, 2011. Pursuant to the program, we repurchased 45,039 shares of common stock during the third quarter of 2011 for an aggregate cost of $658,000. On October 18, 2011, our Board of Directors amended the Company’s share repurchase program by increasing the remaining amount of authorized repurchases to $5.0 million, and extending the expiration of the program to December 31, 2012. We repurchased 57,151 shares of common stock during the fourth quarter of 2011 for an aggregate cost of $840,000. In 2012, we repurchased a total of 104,518 shares of common stock at a cost of $1.8 million.
	On January 15, 2013, the Company's board of directors announced the renewal of the Company's share repurchase program, extending the expiration of the program to December 31, 2014 and increasing the remaining amount of authorized repurchases under the program to $5.0 million from the approximately $2.4 million of authorized repurchases that had previously remained. Pursuant to the program, the Company may continue to repurchase shares from time to time in the open market, and the method, timing and amounts of repurchase will be solely in the discretion of the Company's management. The repurchase program does not require the Company to acquire a specific number of shares. Therefore, the amount of shares repurchased pursuant to the program will depend on several factors, including market conditions, capital and liquidity requirements, and alternative uses for cash available. In 2013, we repurchased 40,713 shares of common stock at a cost of $1.0 million. As of December 31, 2013 the remaining amount available for share repurchase under the current program was $4.0 million.
	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 available-for-sale securities, are reported as a separate component of shareholders’ equity on the consolidated balance sheets, and are disclosed in the consolidated statements of comprehensive income.
The components of accumulated other comprehensive income, included in shareholders’ equity, net of tax, are as follows:
		Year Ended December 31,
		2013			2012		2011
(in thousands)
Unrealized gains on securities available for sale, net of tax		$	1,049		$	11,050	$	9,880
Unrealized loss on pension, net of tax		—			—		(3,742		)
Accumulated other comprehensive income, net of tax		$	1,049		$	11,050	$	6,138

Investment_Securities

Investment Securities	12 Months Ended
	Dec. 31, 2013
Investments [Abstract]	'
Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block]	'
	Investment Securities
	The amortized cost and fair value of investment securities available for sale, with gross unrealized gains and losses, are as follows:
						Gross				Gross
		Amortized				Unrealized				Unrealized				Estimated
		Cost				Gains				Losses				Fair Value
	(in thousands)
	December 31, 2013
	U.S. Government agencies and corporations	$	45,279			$	527			$	867			$	44,939
	State and political subdivisions	207,734				5,625				2,563				210,796
	Mortgage-backed securities	37,593				1,692				—				39,285
	Collateralized mortgage obligations	171,714				1,003				3,494				169,223
	Collateralized debt obligations	2,111				190				984				1,317
	Corporate debt securities	29,802				284				142				29,944
	Total debt securities	494,233				9,321				8,050				495,504
	Other equity securities	2,659				453				55				3,057
	Total investment securities	$	496,892			$	9,774			$	8,105			$	498,561
	December 31, 2012
	U.S. Government agencies and corporations	$	68,707			$	1,132			$	56			$	69,783
	State and political subdivisions	206,392				11,752				125				218,019
	Mortgage-backed securities	56,149				3,110				—				59,259
	Collateralized mortgage obligations	180,564				3,323				28				183,859
	Collateralized debt obligations	2,371				—				1,616				755
	Corporate debt securities	24,067				360				242				24,185
	Total debt securities	538,250				19,677				2,067				555,860
	Other equity securities	1,637				109				65				1,681
	Total investment securities	$	539,887			$	19,786			$	2,132			$	557,541
	The amortized cost and fair value of investment securities held-to-maturity, with gross unrealized gains and losses, are as follows:
						Gross				Gross
		Amortized				Unrealized				Unrealized				Estimated
		Cost				Gains				Losses				Fair Value
	(in thousands)
	December 31, 2013
	State and political subdivisions	$	19,888			$	—			$	1,326			$	18,562
	Mortgage-backed securities	28				3				—				31
	Collateralized mortgage obligations	9,447				—				834				8,613
	Corporate debt securities	3,262				—				277				2,985
	Total	$	32,625			$	3			$	2,437			$	30,191
	December 31, 2012
	State and political subdivisions	$	19,278			$	199			$	57			$	19,420
	Mortgage-backed securities	43				5				—				48
	Collateralized mortgage obligations	10,090				116				—				10,206
	Corporate debt securities	3,258				—				12				3,246
	Total	$	32,669			$	320			$	69			$	32,920
	Investment securities with a carrying value of $202.8 million and $178.7 million at December 31, 2013 and 2012, respectively, were pledged on public deposits, securities sold under agreements to repurchase and for other purposes, as required or permitted by law.
	The summary of investment securities shows that some of the securities in the available for sale and held to maturity investment portfolios had unrealized losses, or were temporarily impaired, as of December 31, 2013 and December 31, 2012. This temporary impairment represents the estimated amount of loss that would be realized if the securities were sold on the valuation date.
	The following presents information pertaining to securities with gross unrealized losses as of December 31, 2013 and 2012, aggregated by investment category and length of time that individual securities have been in a continuous loss position:
					As of December 31, 2013
		Number			Less than 12 Months								12 Months or More					Total
		of
	Available for Sale	Securities			Estimated				Unrealized				Estimated			Unrealized		Estimated		Unrealized
					Fair				Losses				Fair			Losses		Fair		Losses
					Value								Value					Value
	(in thousands, except number of securities)
	U.S. Government agencies and corporations	3			$	21,977			$	867			$	—		$	—	$	21,977	$	867
	State and political subdivisions	171			54,153				2,331				1,799			232		55,952		2,563
	Collateralized mortgage obligations	18			110,142				3,164				5,047			330		115,189		3,494
	Collateralized debt obligations	3			—				—				934			984		934		984
	Corporate debt securities	3			7,430				93				1,561			49		8,991		142
	Other equity securities	1			945				55				—			—		945		55
	Total	199			$	194,647			$	6,510			$	9,341		$	1,595	$	203,988	$	8,105
					As of December 31, 2012
		Number			Less than 12 Months								12 Months or More					Total
		of
	Securities			Estimated				Unrealized				Estimated			Unrealized		Estimated		Unrealized
				Fair				Losses				Fair			Losses		Fair		Losses
				Value								Value					Value
(in thousands, except number of securities)
U.S. Government agencies and corporations	2			$	15,359			$	56			$	—		$	—	$	15,359	$	56
State and political subdivisions	27			7,221				125				—			—		7,221		125
Collateralized mortgage obligations	2			10,919				28				—			—		10,919		28
Collateralized debt obligations	5			—				—				755			1,616		755		1,616
Corporate debt securities	4			14,672				242				—			—		14,672		242
Other equity securities	1			754				65				—			—		754		65
Total	41			$	48,925			$	516			$	755		$	1,616	$	49,680	$	2,132
				As of December 31, 2013
	Number			Less than 12 Months								12 Months or More					Total
	of
Held to Maturity	Securities			Estimated				Unrealized				Estimated			Unrealized		Estimated		Unrealized
				Fair				Losses				Fair			Losses		Fair		Losses
				Value								Value					Value
(in thousands, except number of securities)
State and political subdivisions	30			$	17,420			$	1,195			$	1,142		$	131	$	18,562	$	1,326
Collateralized mortgage obligations	1			8,613				834				—			—		8,613		834
Corporate debt securities	2			2,984				277				—			—		2,984		277
Total	33			$	29,017			$	2,306			$	1,142		$	131	$	30,159	$	2,437
				As of December 31, 2012
	Number			Less than 12 Months								12 Months or More					Total
	of
	Securities			Estimated				Unrealized				Estimated			Unrealized		Estimated		Unrealized
				Fair				Losses				Fair			Losses		Fair		Losses
				Value								Value					Value
(in thousands, except number of securities)
State and political subdivisions	11			$	3,672			$	57			$	—		$	—	$	3,672	$	57
Corporate debt securities	1			2,371				12				—			—		2,371		12
Total	12			$	6,043			$	69			$	—		$	—	$	6,043	$	69
The Company's assessment of other-than-temporary impairment ("OTTI") is based on its reasonable judgment of the specific facts and circumstances impacting each individual security at the time such assessments are made. The Company reviews and considers factual information, including expected cash flows, the structure of the security, the creditworthiness of the issuer, the type of underlying assets and the current and anticipated market conditions.
As of December 31, 2013 and 2012, the Company’s mortgage-backed securities portfolio consisted of securities predominantly backed by one- to four- family mortgage loans and underwritten to the standards of and guaranteed by the following government-sponsored agencies: FHLMC, FNMA and GNMA. The receipt of principal, at par, and interest on mortgage-backed securities is guaranteed by the respective government-sponsored agency guarantor, such that the Company believes that its mortgage-backed securities do not expose the Company to credit-related losses.
At December 31, 2013, approximately 62% of the municipal obligations held by the Company were Iowa-based. The Company does not intend to sell these municipal obligations, and it is more likely than not that the Company will not be required to sell them until the recovery of its cost. Due to the issuers’ continued satisfaction of their obligations under the securities in accordance with their contractual terms and the expectation that they will continue to do so, management’s intent and ability to hold these securities for a period of time sufficient to allow for any anticipated recovery in fair value, as well as the evaluation of the fundamentals of the issuers’ financial condition and other objective evidence, the Company believes that the municipal obligations identified in the tables above were temporarily depressed as of December 31, 2013 and 2012.
At December 31, 2013, the Company owned five collateralized debt obligations backed by pools of trust preferred securities with an original cost basis of $8.8 million. The book value of these securities as of this date totaled $2.1 million after OTTI charges have been recognized. In December 2013 the Company was notified by the trustee of one of the collateralized debt obligations it owns that the security was in the process of being liquidated. The Company recorded a receivable for the expected amount of the liquidation payment and wrote-off the book value of the security. All of the Company's trust preferred collateralized debt obligations are in mezzanine tranches and are currently rated less than investment grade by Moody's Investor Services. They are secured by trust preferred securities of banks and insurance companies throughout the United States, and were rated as investment grade securities when purchased between March 2006 and December 2007. However, as the banking climate eroded during 2008, the securities experienced cash flow problems. Due to continued market deterioration in these securities, additional pre-tax charges to earnings were recorded from 2009 to 2012. The market for these securities is considered to be inactive according to the guidance issued in ASC Topic 820, “Fair Value Measurements and Disclosures.” The Company uses a discounted cash flow model to determine the estimated fair value of its pooled trust preferred collateralized debt obligations and to assess OTTI. The discounted cash flow analysis was performed in accordance with ASC Topic 325. The assumptions used in preparing the discounted cash flow model include the following: estimated discount rates (using yields of comparable traded instruments adjusted for illiquidity and other risk factors), estimated deferral and default rates on collateral, and estimated cash flows. The Company also reviewed a stress test of these securities to determine the degree to which additional deferrals or defaults in the collateral pool in excess of what the Company believed was probable, will negatively impact payments on individual securities.
As of December 31, 2013, the Company also owned $2.1 million of equity securities in banks and financial service-related companies, and $0.9 million of mutual funds invested in debt securities and other debt instruments that will cause units of the fund to be deemed to be qualified under the Community Reinvestment Act (the "CRA"). Equity securities are considered to have OTTI whenever they have been in a loss position, compared to current book value, for twelve consecutive months, and the Company does not expect them to recover to their original cost basis. For the years ended December 31, 2013 and 2012, no impairment charges were recorded, as the affected equity securities were not deemed impaired due to stabilized market prices in relation to the Company's original purchase price.
The following table provides a roll forward of credit losses on fixed maturity securities recognized in net income:
	Year Ended December 31,
	2013				2012
(in thousands)
Beginning balance	$	7,379			$	7,034
Additional credit losses:
Securities with no previous other than temporary impairment	—				—
Securities with previous other than temporary impairments	—				345
Reductions to credit losses:
Securities with previous other than temporary impairments, due to liquidation	(740		)		—
Ending balance	$	6,639			$	7,379
It is reasonably possible that the fair values of the Company's investment securities could decline in the future if the overall economy or the financial condition of the issuers deteriorate or the liquidity of certain securities remains depressed. As a result, there is a risk that additional OTTI may be realized in the future and any such amounts could be material to the Company's consolidated statements of operations.
The contractual maturity distribution of investment debt securities at December 31, 2013, is summarized as follows:
	Available For Sale								Held to Maturity
	Amortized				Fair Value				Amortized				Fair Value
	Cost								Cost
(in thousands)
Due in one year or less	$	14,753			$	14,959			$	185			$	185
Due after one year through five years	105,845				108,406				2,574				2,522
Due after five years through ten years	103,847				105,127				7,780				7,517
Due after ten years	60,481				58,504				12,611				11,323
Debt securities without a single maturity date	209,307				208,508				9,475				8,644
Total	$	494,233			$	495,504			$	32,625			$	30,191
Mortgage-backed and collateralized mortgage obligations are collateralized by mortgage loans guaranteed by U.S. government agencies. Experience has indicated that principal payments will be collected sooner than scheduled because of prepayments. Therefore, these securities are not scheduled in the maturity categories indicated above. Other equity securities available for sale with an amortized cost of $2.7 million and a fair value of $3.1 million are also excluded from this table.
Proceeds from the sales of investment securities available for sale during 2013 were $12.4 million. During 2012 there were $18.3 million sales of investment securities available for sale, while in 2011 there were no sales of investment securities available for sale.
Other investment securities include investments in Federal Home Loan Bank (“FHLB”) stock. The carrying value of the FHLB stock at December 31, 2013 and December 31, 2012 was $9.2 million and $11.1 million, respectively, which is included in the Other Assets line of the consolidated balance sheets. This security is not readily marketable and ownership of FHLB stock is a requirement for membership in the FHLB Des Moines. The amount of FHLB stock the Bank is required to hold is directly related to the amount of FHLB advances borrowed. Because there are no available market values for this security, it is carried at cost and evaluated for potential impairment each quarter. No impairment charges have been recognized on these securities. Redemption of this investment is at the option of the FHLB.
Realized gains and losses on sales are determined on the basis of specific identification of investments based on the trade date. Realized gains (losses) on investments, including impairment losses for the years ended December 31, 2013, 2012 and 2011, were as follows:
	Year Ended December 31,
	2013				2012				2011
(in thousands)
Available for sale fixed maturity securities:
Gross realized gains	$	144			$	424			$	490
Gross realized losses	(79		)		—				—
Other-than-temporary impairment	—				(345		)		(9		)
	65				79				481
Equity securities:
Gross realized gains	—				381				—
Gross realized losses	—				—				—
Other-than-temporary impairment	—				—				—
	—				381				—
Total net realized gains and losses	$	65			$	460			$	481

Loans_Receivable_and_the_Allow

Loans Receivable and the Allowance for Loan Losses	12 Months Ended
	Dec. 31, 2013
Loans Receivable and the Allowance for Loan Losses [Abstract]	'
Loans, Notes, Trade and Other Receivables Disclosure [Text Block]	'
	Loans Receivable and the Allowance for Loan Losses
	The composition of allowance for loan losses, loans, and loan pool participations by portfolio segment, as of and for the years ended December 31, 2013 and 2012, were as follows:
		Allowance for Loan Losses and Recorded Investment in Loan Receivables
		For the Years Ended December 31, 2013 and 2012
	(in thousands)	Agricultural				Commercial and Industrial				Commercial Real Estate			Residential Real Estate				Consumer			Unallocated				Total
	2013
	Allowance for loan losses:
	Individually evaluated for impairment	$	125			$	559			$	513		$	220			$	6		$	—			$	1,423
	Collectively evaluated for impairment	1,233				4,421				4,781			2,965				269			1,087				14,756
	Total	$	1,358			$	4,980			$	5,294		$	3,185			$	275		$	1,087			$	16,179
	Loans acquired with deteriorated credit quality (loan pool participations)	$	3			$	64			$	627		$	88			$	6		$	1,346			$	2,134
	Loans receivable
	Individually evaluated for impairment	$	3,146			$	3,521			$	5,079		$	1,664			$	50		$	—			$	13,460
	Collectively evaluated for impairment	94,021				260,130				429,345			272,462				18,994			—				1,074,952
	Total	$	97,167			$	263,651			$	434,424		$	274,126			$	19,044		$	—			$	1,088,412
	Loans acquired with deteriorated credit quality (loan pool participations)*	$	49			$	1,302			$	18,168		$	3,823			$	18		$	4,307			$	27,667
	(in thousands)	Agricultural				Commercial and Industrial				Commercial Real Estate			Residential Real Estate				Consumer			Unallocated				Total
	2012
	Allowance for loan losses:
	Individually evaluated for impairment	$	159			$	295			$	293		$	136			$	6		$	—			$	889
	Collectively evaluated for impairment	867				4,304				5,474			2,871				350			1,202				15,068
	Total	$	1,026			$	4,599			$	5,767		$	3,007			$	356		$	1,202			$	15,957
	Loans acquired with deteriorated credit quality (loan pool participations)	$	4			$	77			$	673		$	240			$	15		$	1,125			$	2,134
	Loans receivable
	Individually evaluated for impairment	$	3,323			$	1,806			$	5,342		$	886			$	37		$	—			$	11,394
	Collectively evaluated for impairment	81,403				236,810				434,642			251,990				19,045			—				1,023,890
	Total	$	84,726			$	238,616			$	439,984		$	252,876			$	19,082		$	—			$	1,035,284
	Loans acquired with deteriorated credit quality (loan pool participations)*	$	76			$	2,379			$	24,346		$	4,788			$	67		$	6,128			$	37,784
	* The amount shown as “Unallocated” represents the carrying value of other real estate owned within the loan pool participation portfolio total.
	The changes in the allowance for loan losses by portfolio segment, as of and for the years ended December 31, 2013, 2012, and 2011 were as follows:
		Allowance for Loan Loss Activity
		For the Years Ended December 31, 2013, 2012, and 2011
	(in thousands)	Agricultural				Commercial and Industrial				Commercial Real Estate			Residential Real Estate				Consumer			Unallocated				Total
	2013
	Beginning balance	$	1,026			$	4,599			$	5,767		$	3,007			$	356		$	1,202			$	15,957
	Charge-offs	(39		)		(790		)		(545		)	(286		)		(147		)	—				(1,807		)
	Recoveries	36				70				479			67				27			—				679
	Provision	335				1,101				(407		)	397				39			(115		)		1,350
	Ending balance	$	1,358			$	4,980			$	5,294		$	3,185			$	275		$	1,087			$	16,179
	2012
	Beginning balance	$	1,209			$	5,380			$	5,171		$	3,501			$	167		$	248			$	15,676
	Charge-offs	—				(2,345		)		(129		)	(537		)		(90		)	—				(3,101		)
	Recoveries	507				423				24			31				18			—				1,003
	Provision	(690		)		1,141				701			12				261			954				2,379
	Ending balance	$	1,026			$	4,599			$	5,767		$	3,007			$	356		$	1,202			$	15,957
	2011
	Beginning balance	$	827			$	4,540			$	5,255		$	2,776			$	323		$	1,446			$	15,167
	Charge-offs	(425		)		(1,440		)		(1,280		)	(503		)		(153		)	—				(3,801		)
	Recoveries	67				573				144			33				143			—				960
	Provision	740				1,707				1,052			1,195				(146		)	(1,198		)		3,350
	Ending balance	$	1,209			$	5,380			$	5,171		$	3,501			$	167		$	248			$	15,676
	Loan Portfolio Segment Risk Characteristics
	Agricultural - Agricultural loans, most of which are secured by crops, livestock, and machinery, are provided to finance capital improvements and farm operations as well as acquisitions of livestock and machinery. The ability of the borrower to repay may be affected by many factors outside of the borrower's control including adverse weather conditions, loss of livestock due to disease or other factors, declines in market prices for agricultural products and the impact of government regulations. The ultimate repayment of agricultural loans is dependent upon the profitable operation or management of the agricultural entity. Collateral for these loans generally includes accounts receivable, inventory, equipment and real estate. However, depending on the overall financial condition of the borrower, some loans are made on an unsecured basis. The collateral securing these loans may depreciate over time, may be difficult to appraise and may fluctuate in value based on the success of the business.
	Commercial and Industrial - Commercial and industrial loans are primarily made based on the reported cash flow of the borrower and secondarily on the underlying collateral provided by the borrower. The collateral support provided by the borrower for most of these loans and the probability of repayment are based on the liquidation of the pledged collateral and enforcement of a personal guarantee, if any exists. The primary repayment risks of commercial and industrial loans are that the cash flows of the borrower may be unpredictable, and the collateral securing these loans may fluctuate in value. The size of the loans the Company can offer to commercial customers is less than the size of the loans that competitors with larger lending limits can offer. This may limit the Company's ability to establish relationships with the largest businesses in the areas in which the Company operates. As a result, the Company may assume greater lending risks than financial institutions that have a lesser concentration of such loans and tend to make loans to larger businesses. Collateral for these loans generally includes accounts receivable, inventory, equipment and real estate. However, depending on the overall financial condition of the borrower, some loans are made on an unsecured basis. The collateral securing these loans may depreciate over time, may be difficult to appraise and may fluctuate in value based on the success of the business. In addition, if the U.S. economy does not continue to improve, this could harm or continue to harm the businesses of the Company’s commercial and industrial customers and reduce the value of the collateral securing these loans.
	Commercial Real Estate - The Company offers mortgage loans to commercial and agricultural customers for the acquisition of real estate used in their businesses, such as offices, warehouses and production facilities, and to real estate investors for the acquisition of apartment buildings, retail centers, office buildings and other commercial buildings. The market value of real estate securing commercial real estate loans can fluctuate significantly in a short period of time as a result of market conditions in the geographic area in which the real estate is located. Adverse developments affecting real estate values in one or more of the Company's markets could increase the credit risk associated with its loan portfolio. Additionally, real estate lending typically involves higher loan principal amounts than non-real estate loans, and the repayment of the loans generally is dependent, in large part, on sufficient income from the properties securing the loans to cover operating expenses and debt service. Economic events or governmental regulations outside of the Company’s control or that of the borrower could negatively impact the future cash flow and market values of the affected properties.
	Residential Real Estate - The Company generally retains short-term residential mortgage loans that are originated for its own portfolio but sells most long-term loans to other parties while retaining servicing rights on the majority of those loans. The market value of real estate securing residential real estate loans can fluctuate as a result of market conditions in the geographic area in which the real estate is located. Adverse developments affecting real estate values in one or more of the Company's markets could increase the credit risk associated with its loan portfolio. Additionally, real estate lending typically involves higher loan principal amounts than non-real estate loans, and the repayment of the loans generally is dependent, in large part, on the borrower's continuing financial stability, and is therefore more likely to be affected by adverse personal circumstances.
	Consumer - Consumer loans typically have shorter terms, lower balances, higher yields and higher risks of default than real estate related loans. Consumer loan collections are dependent on the borrower's continuing financial stability, and are therefore more likely to be affected by adverse personal circumstances. Collateral for these loans generally includes automobiles, boats, recreational vehicles, mobile homes, and real estate. However, depending on the overall financial condition of the borrower, some loans are made on an unsecured basis. The collateral securing these loans may depreciate over time, may be difficult to recover and may fluctuate in value based on condition. In addition, a decline in the United States economy could result in reduced employment, impacting the ability of customers to repay their obligations.
	Loans acquired with deteriorated credit quality (loan pool participations) - The underlying loans in the loan pool participations include both fixed-rate and variable-rate instruments. No amounts for interest due are reflected in the carrying value of the loan pool participations. Based on historical experience, the average period of collectibility for loans underlying loan pool participations, many of which have exceeded contractual maturity dates, is approximately three to five years. Loan pool balances are affected by the payment and refinancing activities of the borrowers resulting in pay-offs of the underlying loans and reduction in the balances. Collections from the individual borrowers are managed by the loan pool servicer and are affected by the borrower's financial ability and willingness to pay, foreclosure and legal action, collateral value, and the economy in general.
	Charge-off Policy
	The Company requires a loan to be charged-off as soon as it becomes apparent that some loss will be incurred, or when its collectability is sufficiently questionable that it no longer is considered a bankable asset. The primary considerations when determining if and how much of a loan should be charged-off are as follows: (1) the potential for future cash flows; (2) the value of any collateral; and (3) the strength of any co-makers or guarantors.
	When it is determined that a loan requires partial or full charge-off, a request for approval of a charge-off is submitted to the Bank's President, Executive Vice President and Chief Credit Officer, and the Senior Regional Loan officer. The Bank's Board of Directors formally approves all loan charge-offs. Once a loan is charged-off, it cannot be restructured and returned to the Bank's books.
	The Allowance for Loan and Lease Losses - Bank Loans
	The Company requires the maintenance of an adequate allowance for loan and lease losses (“ALLL”) in order to cover estimated probable losses without eroding the Company's capital base. Calculations are done at each quarter end, or more frequently if warranted, to analyze the collectability of loans and to ensure the adequacy of the allowance. In line with FDIC directives, the ALLL calculation does not include consideration of loans held for sale or off-balance-sheet credit exposures (such as unfunded letters of credit). Determining the appropriate level for the ALLL relies on the informed judgment of management, and as such, is subject to inaccuracy. Given the inherently imprecise nature of calculating the necessary ALLL, the Company's policy permits an "unallocated" allowance between 15% above and 5% below the “indicated reserve.” These unallocated amounts are due to those overall factors impacting the ALLL that are not captured in detailed loan category calculations.
Loans Reviewed Individually for Impairment
The Company identifies loans to be reviewed and evaluated individually for impairment based on current information and events and the probability that the borrower will be unable to repay all amounts due according to the contractual terms of the loan agreement. Specific areas of consideration include: size of credit exposure, risk rating, delinquency, nonaccrual status, and loan classification.
The level of individual impairment is measured using one of the following methods: (1) the fair value of the collateral less costs to sell; (2) the present value of expected future cash flows, discounted at the loan's effective interest rate; or (3) the loan's observable market price. Loans that are deemed fully collateralized or have been charged down to a level corresponding with any three of the measurements require no assignment of reserves from the ALLL.
All loans deemed troubled debt restructure or “TDR” are considered impaired. A loan is considered a TDR when the Bank, for economic or legal reasons related to a borrower's financial difficulties, grants a concession to the borrower that the Bank would not otherwise consider. All of the following factors are indicators that the Bank has granted a concession (one or multiple items may be present):
•	The borrower receives a reduction of the stated interest rate for the remaining original life of the debt.
•	The borrower receives an extension of the maturity date or dates at a stated interest rate lower that the current market interest rate for new debt with similar risk characteristics.
•	The borrower receives a reduction of the face amount or maturity amount of the debt as stated in the instrument or other agreement.
•	The borrower receives a deferral of required payments (principal and/or interest).
•	The borrower receives a reduction of the accrued interest.
The following tables set forth information on the Company's TDRs(1) by class of financing receivable occurring during the stated periods:
	For the Year Ended December 31,
	2013										2012								2011
	Number of Contracts		Pre-Modification Outstanding Recorded Investment				Post-Modification Outstanding Recorded Investment				Number of Contracts	Pre-Modification Outstanding Recorded Investment				Post-Modification Outstanding Recorded Investment			Number of Contracts		Pre-Modification Outstanding Recorded Investment				Post-Modification Outstanding Recorded Investment
(dollars in thousands)
Troubled Debt Restructurings:
Commercial and industrial
Interest rate reduction	0		$	—			$	—			0	$	—			$	—		1		$	53			$	53
Amortization or maturity date change	10		1,546				1,546				1	551				551			0		—				—
Commercial real estate:
Construction and development
Interest rate reduction	0		—				—				0	—				—			1		607				80
Farmland
Interest rate reduction	0		—				—				2	2,475				2,388			0		—				—
Commercial real estate-other
Interest rate reduction	0		—				—				0	—				—			6		2,471				2,471
Amortization or maturity date change	2		165				136				0	—				—			0		—				—
Residential real estate:
One- to four- family first liens
Interest rate reduction	2		164				169				0	—				—			1		194				198
Amortization or maturity date change	1		66				69				0	—				—			0		—				—
One- to four- family junior liens
Interest rate reduction	1		8				13				1	135				138			0		—				—
Total	16		$	1,949			$	1,933			4	$	3,161			$	3,077		9		$	3,325			$	2,802
(1) - TDRs may include multiple concessions and the disclosure classifications are based on the primary concession provided to the borrower.
Loans by class of financing receivable modified as TDRs(1) within the previous 12 months and for which there was a payment default during the stated periods were:
	For the Year Ended December 31,
	2013						2012					2011
	Number of Contracts		Recorded Investment				Number of Contracts		Recorded Investment			Number of Contracts		Recorded Investment
(dollars in thousands)
Troubled Debt Restructurings That Subsequently Defaulted:
Commercial and industrial
Amortization or maturity date change	0		—				1		547			0		$	—
Commercial real estate:
Commercial real estate-other
Interest rate reduction	0		—				0		—			5		1,388
Amortization or maturity date change	1		69				0		—			0		—
Residential real estate:
One- to four- family first liens
Interest rate reduction	1		111				0		—			0		—
Total	2		$	180			1		$	547		5		$	1,388
(1) - TDRs may include multiple concessions and the disclosure classifications are based on the primary concession provided to the borrower.
Loans Reviewed Collectively for Impairment
All loans not evaluated individually for impairment are grouped together by type (i.e. commercial, agricultural, consumer, etc.) and further segmented within each subset by risk classification (i.e. pass, special mention, and substandard). Homogeneous loans past due 60-89 days and 90+ days are classified special mention and substandard, respectively, for allocation purposes.
The Company's historical loss experience for each loan type is calculated using the fiscal quarter-end data for the most recent 20 quarters as a starting point for estimating losses. In addition, other prevailing qualitative or environmental factors likely to cause probable losses to vary from historical data are incorporated in the form of adjustments to increase or decrease the loss rate applied to each group. These adjustments are documented and fully explain how the current information, events, circumstances, and conditions impact the historical loss measurement assumptions.
Although not a comprehensive list, the following are considered key factors and are evaluated with each calculation of the ALLL to determine if adjustments to historical loss rates are warranted:
•	Changes in lending policies and procedures, including changes in underwriting standards and collection, charge-off, and recovery practices not considered elsewhere in estimating credit losses.
•	Changes in international, national, regional, and local economic and business conditions and developments that affect the collectability of the portfolio, including the condition of various market segments.
•	Changes in the nature and volume of the portfolio and in the terms of loans.
•	Changes in the experience, ability and depth of lending management and other relevant staff.
•	Changes in the volume and severity of past due loans, the volume of nonaccrual loans, and the volume and severity of adversely classified or graded loans.
•	Changes in the quality of our loan review system.
•	Changes in the value of underlying collateral for collateral-dependent loans.
•	The existence and effect of any concentrations of credit, and changes in the level of such concentrations.
•	The effect of other external factors, such as competition and legal and regulatory requirements, on the level of estimated credit losses in the Bank’s existing portfolio.
The items listed above are used to determine the pass percentage for loans evaluated collectively and, as such, are applied to the loans risk rated pass. Due to the inherent risks associated with special mention risk rated loans (i.e. early stages of financial deterioration, technical exceptions, etc.), this subset is reserved at two times the pass allocation factor to reflect this increased risk exposure. In addition, non-impaired loans classified as substandard loans carry greater risk than special mention loans, and as such, this subset is reserved at six times the pass allocation. Further, non-impaired loans less than $0.2 million that are past due 60 - 89 days or 90 days and over, are respectively classified as special mention or substandard. They are given an increased loan loss allocation of 25% or 50%, respectively, above the five year historical loss rate of the specific loan type.
The Allowance for Loan and Lease Losses - Loan Pool Participations
The Company requires that the loan pool participation ALLL will be at least sufficient to cover the next quarter’s estimated charge-offs as presented by the servicer. Currently, charge-offs are netted against the income the Company receives, thus the balance in the loan pool reserve is not affected and remains stable. In essence, a provision for loan losses is made that is equal to the quarterly charge-offs, which is deducted from income received from the loan pools. By maintaining a sufficient reserve to cover the next quarter’s charge-offs, the Company will have sufficient reserves in place should no income be collected from the loan pools during the quarter. In the event the estimated charge-offs provided by the servicer are greater than the loan pool ALLL, an additional provision is made to cover the difference between the current ALLL and the estimated charge-offs provided by the servicer.
Loans Reviewed Individually for Impairment
The loan servicer reviews the portfolio quarterly on a loan-by-loan basis, and loans that are deemed to be impaired are charged-down to their estimated value during the next calendar quarter. All loans that are to be charged-down are reserved against in the ALLL adequacy calculation. Loans that continue to have an investment basis that have been charged-down are monitored, and, if additional impairment is noted, the reserve requirement is increased on the individual loan.
Loans Reviewed Collectively for Impairment
The Company utilizes the annualized average of portfolio loan (not loan pool) historical loss per risk category over a two year period of time. Supporting documentation for the technique used to develop the historical loss rate for each group of loans is required to be maintained. It is management’s assessment that the two year rate is most reflective of the estimated credit losses in the current loan pool portfolio.
The following table sets forth the composition of the Company’s loans and loan pool participations by internally assigned credit quality indicators at December 31, 2013 and 2012:
	Pass				Special Mention/Watch				Substandard			Doubtful				Loss			Total
(in thousands)
2013
Agricultural	$	93,187			$	460			$	3,520		$	—			$	—		$	97,167
Commercial and industrial	239,485				11,097				11,786			—				—			262,368
Credit cards	1,010				1				17			—				—			1,028
Overdrafts	326				123				88			—				—			537
Commercial real estate:
Construction & development	56,112				14,984				1,493			—				—			72,589
Farmland	80,044				3,091				2,340			—				—			85,475
Multifamily	53,315				1,732				396			—				—			55,443
Commercial real estate-other	205,914				12,994				2,009			—				—			220,917
Total commercial real estate	395,385				32,801				6,238			—				—			434,424
Residential real estate:
One- to four- family first liens	213,815				3,994				2,859			—				—			220,668
One- to four- family junior liens	53,225				38				195			—				—			53,458
Total residential real estate	267,040				4,032				3,054			—				—			274,126
Consumer	18,643				57				62			—				—			18,762
Total	$	1,015,076			$	48,571			$	24,765		$	—			$	—		$	1,088,412
Loans acquired with deteriorated credit quality (loan pool participations)	$	13,569			$	—			$	14,093		$	—			$	5		$	27,667
2012
Agricultural	$	80,657			$	579			$	3,490		$	—			$	—		$	84,726
Commercial and industrial	211,344				12,473				13,376			—				—			237,193
Credit cards	967				4				30			—				—			1,001
Overdrafts	452				181				126			—				—			759
Commercial real estate:
Construction & development	72,916				9,493				4,385			—				—			86,794
Farmland	76,023				2,684				2,356			—				—			81,063
Multifamily	46,272				1,486				—			—				—			47,758
Commercial real estate-other	209,143				13,745				1,481			—				—			224,369
Total commercial real estate	404,354				27,408				8,222			—				—			439,984
Residential real estate:
One- to four- family first liens	191,712				4,478				1,552			—				—			197,742
One- to four- family junior liens	54,606				229				299			—				—			55,134
Total residential real estate	246,318				4,707				1,851			—				—			252,876
Consumer	18,604				70				71			—				—			18,745
Total	$	962,696			$	45,422			$	27,166		$	—			$	—		$	1,035,284
Loans acquired with deteriorated credit quality (loan pool participations)	$	21,251			$	—			$	16,518		$	—			$	15		$	37,784
Special Mention/Watch - A special mention/watch asset has potential weaknesses that deserve management's close attention. If left uncorrected, these potential weaknesses may result in deterioration of the repayment prospects for the asset or in the Company's credit position at some future date. Special mention/watch assets are not adversely classified and do not expose the Company to sufficient risk to warrant adverse classification.
Substandard - Substandard loans are inadequately protected by the current net worth and paying capacity of the obligor or of the collateral pledged, if any. Loans so classified must have a well defined weakness or weaknesses that jeopardize the liquidation of the debt. They are characterized by the distinct possibility that the Bank will sustain some loss if the deficiencies are not corrected.
Doubtful - Loans classified doubtful have all the weaknesses inherent in those classified substandard with the added characteristic that the weaknesses make collection or liquidation in full, on the basis of currently known facts, conditions and values, highly questionable and improbable.
Loss - Loans classified loss are generally considered uncollectible and of such little value that their continuance as bankable assets is not warranted. This classification does not mean that the loan has absolutely no recovery or salvage value but rather it is not practical or desirable to defer writing off this basically worthless asset even though partial recovery may be effected in the future.
The following tables set forth the amounts and categories of the Company’s impaired loans as of December 31, 2013 and 2012:
	As of December 31,
	2013											2012
	Recorded Investment				Unpaid Principal Balance				Related Allowance			Recorded Investment				Unpaid Principal Balance			Related Allowance
(in thousands)
With no related allowance recorded:
Agricultural	$	1,475			$	1,975			$	—		$	1,600			$	2,100		$	—
Commercial and industrial	1,919				2,020				—			775				1,524			—
Credit cards	—				—				—			—				—			—
Overdrafts	—				—				—			—				—			—
Commercial real estate:
Construction & development	132				601				—			149				299			—
Farmland	93				107				—			75				88			—
Multifamily	—				—				—			—				—			—
Commercial real estate-other	587				612				—			1,722				1,887			—
Total commercial real estate	812				1,320				—			1,946				2,274			—
Residential real estate:
One- to four- family first liens	622				741				—			136				203			—
One- to four- family junior liens	50				50				—			41				41			—
Total residential real estate	672				791				—			177				244			—
Consumer	10				26				—			14				30			—
Total	$	4,888			$	6,132			$	—		$	4,512			$	6,172		$	—
With an allowance recorded:
Agricultural	$	1,671			$	1,671			$	125		$	1,723			$	1,723		$	159
Commercial and industrial	1,602				1,657				559			1,031				1,031			295
Credit cards	—				—				—			—				—			—
Overdrafts	—				—				—			—				—			—
Commercial real estate:
Construction & development	7				7				3			525				525			105
Farmland	2,311				2,461				219			2,316				2,466			47
Multifamily	—				—				—			—				—			—
Commercial real estate-other	1,949				2,164				291			555				555			141
Total commercial real estate	4,267				4,632				513			3,396				3,546			293
Residential real estate:
One- to four- family first liens	902				902				170			642				642			89
One- to four- family junior liens	90				90				50			67				67			47
Total residential real estate	992				992				220			709				709			136
Consumer	40				40				6			23				23			6
Total	$	8,572			$	8,992			$	1,423		$	6,882			$	7,032		$	889
Total:
Agricultural	$	3,146			$	3,646			$	125		$	3,323			$	3,823		$	159
Commercial and industrial	3,521				3,677				559			1,806				2,555			295
Credit cards	—				—				—			—				—			—
Overdrafts	—				—				—			—				—			—
Commercial real estate:
Construction & development	139				608				3			674				824			105
Farmland	2,404				2,568				219			2,391				2,554			47
Multifamily	—				—				—			—				—			—
Commercial real estate-other	2,536				2,776				291			2,277				2,442			141
Total commercial real estate	5,079				5,952				513			5,342				5,820			293
Residential real estate:
One- to four- family first liens	1,524				1,643				170			778				845			89
One- to four- family junior liens	140				140				50			108				108			47
Total residential real estate	1,664				1,783				220			886				953			136
Consumer	50				66				6			37				53			6
Total	$	13,460			$	15,124			$	1,423		$	11,394			$	13,204		$	889
The following table sets forth the average recorded investment and interest income recognized for each category of the Company’s impaired loans during the stated periods:
	For the Year Ended December 31,
	2013								2012							2011
	Average Recorded Investment				Interest Income Recognized				Average Recorded Investment			Interest Income Recognized				Average Recorded Investment			Interest Income Recognized
(in thousands)
With no related allowance recorded:
Agricultural	$	1,128			$	114			$	1,600		$	60			$	2,095		$	54
Commercial and industrial	2,025				76				965			52				1,069			17
Credit cards	—				—				—			—				—			—
Overdrafts	—				—				—			—				—			—
Commercial real estate:
Construction & development	149				21				316			—				690			(15		)
Farmland	101				8				83			8				3,765			149
Multifamily	—				—				—			—				—			—
Commercial real estate-other	593				25				1,770			72				2,263			69
Total commercial real estate	843				54				2,169			80				6,718			203
Residential real estate:
One- to four- family first liens	669				14				143			4				1,278			17
One- to four- family junior liens	50				1				43			3				70			2
Total residential real estate	719				15				186			7				1,348			19
Consumer	12				—				16			—				15			2
Total	$	4,727			$	259			$	4,936		$	199			$	11,245		$	295
With an allowance recorded:
Agricultural	$	1,681			$	51			$	1,723		$	50			$	1,866		$	58
Commercial and industrial	1,697				75				1,044			36				1,392			57
Credit cards	—				—				—			—				—			—
Overdrafts	—				—				—			—				—			—
Commercial real estate:
Construction & development	7				—				526			30				776			26
Farmland	2,315				110				2,504			114				329			—
Multifamily	—				—				—			—				249			18
Commercial real estate-other	1,921				55				559			18				1,173			64
Total commercial real estate	4,243				165				3,589			162				2,527			108
Residential real estate:
One- to four- family first liens	909				38				645			33				1,256			32
One- to four- family junior liens	92				1				68			2				92			5
Total residential real estate	1,001				39				713			35				1,348			37
Consumer	41				2				24			2				34			3
Total	$	8,663			$	332			$	7,093		$	285			$	7,167		$	263
Total:
Agricultural	$	2,809			$	165			$	3,323		$	110			$	3,961		$	112
Commercial and industrial	3,722				151				2,009			88				2,461			74
Credit cards	—				—				—			—				—			—
Overdrafts	—				—				—			—				—			—
Commercial real estate:
Construction & development	156				21				842			30				1,466			11
Farmland	2,416				118				2,587			122				4,094			149
Multifamily	—				—				—			—				249			18
Commercial real estate-other	2,514				80				2,329			90				3,436			133
Total commercial real estate	5,086				219				5,758			242				9,245			311
Residential real estate:
One- to four- family first liens	1,578				52				788			37				2,534			49
One- to four- family junior liens	142				2				111			5				162			7
Total residential real estate	1,720				54				899			42				2,696			56
Consumer	53				2				40			2				49			5
Total	$	13,390			$	591			$	12,029		$	484			$	18,412		$	558
The following table sets forth the composition and past due status of the Company’s loans at December 31, 2013 and 2012:
	30 - 59 Days Past Due				60 - 89 Days Past Due				90 Days or More Past Due			Total Past Due				Current			Total Loans Receivable				Recorded Investment > 90 Days Past Due and Accruing
(in thousands)
2013
Agricultural	$	65			$	23			$	52		$	140			$	97,027		$	97,167			$	—
Commercial and industrial	610				876				960			2,446				259,922			262,368				213
Credit cards	—				1				17			18				1,010			1,028				17
Overdrafts	40				1				48			89				448			537				—
Commercial real estate:
Construction & development	84				—				56			140				72,449			72,589				—
Farmland	—				—				—			—				85,475			85,475				—
Multifamily	—				—				395			395				55,048			55,443				395
Commercial real estate-other	604				190				1,740			2,534				218,383			220,917				164
Total commercial real estate	688				190				2,191			3,069				431,355			434,424				559
Residential real estate:
One- to four- family first liens	1,891				869				984			3,744				216,924			220,668				540
One- to four- family junior liens	316				38				175			529				52,929			53,458				49
Total residential real estate	2,207				907				1,159			4,273				269,853			274,126				589
Consumer	17				62				36			115				18,647			18,762				7
Total	$	3,627			$	2,060			$	4,463		$	10,150			$	1,078,262		$	1,088,412			$	1,385
2012
Agricultural	$	96			$	—			$	—		$	96			$	84,630		$	84,726			$	—
Commercial and industrial	289				70				85			444				236,749			237,193				85
Credit cards	4				—				30			34				967			1,001				30
Overdrafts	82				6				39			127				632			759				—
Commercial real estate:
Construction & development	448				—				—			448				86,346			86,794				—
Farmland	—				—				—			—				81,063			81,063				—
Multifamily	—				—				—			—				47,758			47,758				—
Commercial real estate-other	892				295				67			1,254				223,115			224,369				67
Total commercial real estate	1,340				295				67			1,702				438,282			439,984				67
Residential real estate:
One- to four- family first liens	2,210				1,185				311			3,706				194,036			197,742				311
One- to four- family junior liens	233				189				75			497				54,637			55,134				75
Total residential real estate	2,443				1,374				386			4,203				248,673			252,876				386
Consumer	70				72				4			146				18,599			18,745				4
Total	$	4,324			$	1,817			$	611		$	6,752			$	1,028,532		$	1,035,284			$	572
Non-accrual and Delinquent Loans
Loans are placed on non-accrual when (1) payment in full of principal and interest is no longer expected or (2) principal or interest has been in default for 90 days or more (unless the loan is both well secured with marketable collateral and in the process of collection). All loans rated doubtful or worse, and certain loans rated substandard, are placed on non-accrual.
A non-accrual asset may be restored to an accrual status when (1) all past due principal and interest has been paid (excluding renewals and modifications that involve the capitalizing of interest) or (2) the loan becomes well secured with marketable collateral and is in the process of collection. An established track record of performance is also considered when determining accrual status.
Delinquency status of a loan is determined by the number of days that have elapsed past the loan's payment due date, using the following classification groupings: 30-59 days, 60-89 days and 90 days or more. Loans shown in the 30-59 days and 60-89 days columns in the table above reflect contractual delinquency status of loans not considered nonperforming due to classification as a TDR or being placed on non-accrual.
The following table sets forth the composition of the Company’s recorded investment in loans on nonaccrual status as of December 31, 2013 and 2012:
	As of December 31,
	2013				2012
(in thousands)
Agricultural	$	52			$	64
Commercial and industrial	746				757
Credit cards	—				—
Overdrafts	—				—
Commercial real estate:
Construction & development	139				149
Farmland	29				33
Multifamily	—				—
Commercial real estate-other	1,576				1,128
Total commercial real estate	1,744				1,310
Residential real estate:
One- to four- family first liens	543				550
One- to four- family junior liens	126				223
Total residential real estate	669				773
Consumer	29				34
Total	$	3,240			$	2,938
As of December 31, 2013, the Company had no commitments to lend additional funds to borrowers who have had a TDR loan.
A summary of the changes in the carrying value of loan pool participations for the years ended December 31, 2013 and 2012, is as follows:
	For the Year Ended December 31,
	2013				2012
(in thousands)
Balance at beginning of year	$	35,650			$	50,052
Principal payments	(8,687		)		(13,115		)
Net charge-offs	(1,430		)		(1,287		)
Balance at end of year	$	25,533			$	35,650
Total face value at end of year	$	80,902			$	105,299
Loan Pool Participations
ASC Topic 310 addresses accounting for differences between contractual cash flows and cash flows expected to be collected from an investor’s initial investment in loans or debt securities acquired in a transfer if those differences are attributable, at least in part, to credit quality. The loans underlying the loan pool participations were evaluated individually when purchased for application of ASC Topic 310, utilizing various criteria including: past-due status, late payments, legal status of the loan (not in foreclosure, judgment against the borrower, or referred to legal counsel), frequency of payments made, collateral adequacy and the borrower’s financial condition. If all the criteria were met, the individual loan utilized the accounting treatment required by ASC Topic 310 with the accretable yield difference between the expected cash flows and the purchased basis accreted into income on the level yield basis over the anticipated life of the loan. If any of the six criteria were not met at the time of purchase, the loan was accounted for on the cash basis of accounting.
The loan servicer reviews the portfolio quarterly on a loan-by-loan basis, and loans that are deemed to be impaired are charged-down to their estimated value. As of December 31, 2013, approximately 66% of the loans were contractually current or less than 90 days past due, while 34% were contractually past due 90 days or more. Many of the loans were acquired in a contractually past due status, which is reflected in the discounted purchase price of the loans. Performance status is monitored on a monthly basis. The 34% contractually past due includes loans in litigation and foreclosed property.
The Company evaluated all loans under the ASC Topic 310 criteria as of December 31, 2013 and 2012 and determined that certain loans did not meet the criteria for level-yield income recognition required by ASC Topic 310. The outstanding balance of those loans was $76.9 million with a carrying value of $24.6 million as of December 31, 2013, and $98.3 million and $32.5 million, respectively, as of December 31, 2012. Income from these loans is realized on a cash basis, or when payments are actually received from the borrower.
The outstanding balances and carrying values as of December 31, 2013 and 2012, of the loans purchased that met the level-yield income recognition criteria under ASC Topic 310 are as follows:
	As of December 31,
	2013				2012
(in thousands)
Agricultural	$	—			$	—
Commercial	502				526
Real Estate:
1-4 family residences	229				341
Agricultural	—				51
Land development	—				—
Multifamily residences	—				363
Commercial	2,320				4,025
Total real estate	2,549				4,780
Total	$	3,051			$	5,306
Allowance	(48		)		(80		)
Carrying amount, net of allowance	$	3,003			$	5,226
Changes in accretable yield on the loans that met the level-yield income recognition criteria under ASC Topic 310 were as follows:
	Accretable Yield December 31,
	2013				2012
(in thousands)
Balance at beginning of year	$	2,627			$	3,322
Additions	—				—
Accretions	(383		)		(641		)
Reclassifications to nonaccretable differences	—				(54		)
Balance at end of year	$	2,244			$	2,627
Cash flows expected to be collected at acquisition	$	8,128			$	11,507
Basis in acquired loans at acquisition	$	4,638			$	7,046

Premises_and_Equipment

Premises and Equipment	12 Months Ended
	Dec. 31, 2013
Premises and Equipment [Abstract]	'
Property, Plant and Equipment Disclosure [Text Block]	'
	Premises and Equipment
	Premises and equipment as of December 31, 2013 and 2012 were as follows:
		As of December 31,
		2013		2012
	(in thousands)
	Land	$	4,836	$	4,841
	Buildings and leasehold improvements	30,287		30,182
	Furniture and equipment	17,506		14,399
	Premises and equipment	52,629		49,422
	Accumulated depreciation and amortization	24,947		23,813
	Premises and equipment, net	$	27,682	$	25,609
	Premises and equipment depreciation and amortization expense for the years ended December 31, 2013, 2012 and 2011 was $2.4 million, $2.3 million and $2.5 million, respectively.

Intangible_Assets

Intangible Assets	12 Months Ended
	Dec. 31, 2013
Intangible Assets [Abstract]	'
Goodwill and Intangible Assets Disclosure [Text Block]	'
	Intangible Assets
	Intangible assets decreased to $8.8 million as of December 31, 2013, from $9.5 million as of December 31, 2012, as a result of normal amortization. Amortization of intangible assets is recorded using an accelerated method based on the estimated useful life of the core deposit intangible, customer list intangible and insurance agency intangible. Projections of amortization expense are based on existing asset balances and the remaining useful lives.
	The trade name intangible is not amortized but is evaluated for impairment annually or whenever events or changes in circumstances indicate that the carrying value may not be recoverable. No impairment was recorded on this asset in 2013, 2012, or 2011.
	The following table summarizes the amounts and carrying values of intangible assets as of December 31, 2013 and 2012:
		Weighted		Gross						Unamortized
		Average		Carrying			Accumulated			Intangible
		Useful Life		Amount			Amortization			Assets
	(dollars in thousands)	(years)
	December 31, 2013
	Other intangible assets:
	Insurance agency intangible	8		$	1,320		$	850		$	470
	Core deposit premium	5		5,433			4,322			1,111
	Trade name intangible	—		7,040			—			7,040
	Customer list intangible	10		330			145			185
	Total			$	14,123		$	5,317		$	8,806
	December 31, 2012
	Other intangible assets:
	Insurance agency intangible	9		$	1,320		$	728		$	592
	Core deposit premium	6		5,433			3,803			1,630
	Trade name intangible	—		7,040			—			7,040
	Customer list intangible	11		330			123			207
	Total			$	14,123		$	4,654		$	9,469
	The following table summarizes future amortization expense of intangible assets:
		Insurance			Core			Customer
		Agency			Deposit			List
		Intangible			Premium			Intangible			Totals
	(in thousands)
	Year ending December 31,
	2014	$	105		$	420		$	22		$	547
	2015	89			321			21			431
	2016	72			222			20			314
	2017	55			123			19			197
	2018	38			25			18			81
	Thereafter	111			—			85			196
	Total	$	470		$	1,111		$	185		$	1,766

Other_Assets

Other Assets	12 Months Ended
	Dec. 31, 2013
Other Assets [Abstract]	'
Other Assets Disclosure [Text Block]	'
	Other Assets
	The components of the Company’s other assets as of December 31, 2013 and 2012 were as follows:
		As of December 31,
		2013		2012
	(in thousands)
	Federal Home Loan Bank Stock	$	9,226	$	11,087
	Prepaid expenses	1,030		5,211
	Mortgage servicing rights	2,298		1,484
	Accounts receivable & other miscellaneous assets	2,006		2,600
		$	14,560	$	20,382
	The Bank is a member of The Federal Home Loan Bank of Des Moines, and ownership of FHLB stock is a requirement for membership in the FHLB Des Moines. The amount of FHLB stock the Bank is required to hold is directly related to the amount of FHLB advances borrowed. Because this security is not readily marketable and there are no available market values, this security is carried at cost and evaluated for potential impairment each quarter. Redemption of this investment is at the option of the FHLB.
	Mortgage servicing rights are recorded at fair value based on assumptions provided by a third-party valuation service. The valuation model incorporates assumptions that market participants would use in estimating future net servicing income, such as the servicing cost per loan, the discount rate, the escrow float rate, an inflation rate, ancillary income, prepayment speeds and default rates and losses.

Loans_Serviced_for_Others

Loans Serviced for Others	12 Months Ended
	Dec. 31, 2013
Loans Serviced for Others [Abstract]	'
Loans Serviced For Others [Text Block]	'
	Loans Serviced for Others
	Loans serviced for others are not included in the accompanying consolidated balance sheets. The unpaid principal balances of mortgage and other loans serviced for others were $362.9 million and $358.4 million at December 31, 2013 and 2012, respectively. Servicing loans for others generally consists of collecting mortgage payments, maintaining escrow accounts, disbursing payments to investors and collection and foreclosure processing. Loan servicing income is recorded on the accrual basis and includes servicing fees from investors and certain charges collected from borrowers, such as late payment fees, and is net of fair value adjustments to capitalized mortgage servicing rights.

Time_Deposits

Time Deposits	12 Months Ended
	Dec. 31, 2013
Time Deposits [Abstract]	'
Deposit Liabilities Disclosures [Text Block]	'
	Time Deposits
	At December 31, 2013, the scheduled maturities of certificates of deposits were as follows:
	(in thousands)
	2014	$	306,354
	2015	95,913
	2016	38,237
	2017	18,967
	2018	5,850
	Thereafter	30
	Total	$	465,351
	The Company had $12.9 million in brokered time deposits through the CDARS program as of December 31, 2013. The CDARS program coordinates, on a reciprocal basis, a network of banks to spread deposits exceeding the FDIC insurance coverage limits out to numerous institutions in order to provide insurance coverage for all participating deposits.

ShortTerm_Borrowings

Short-Term Borrowings	12 Months Ended
	Dec. 31, 2013
Short-term Debt [Abstract]	'
Debt Disclosure [Text Block]	'
	Short-Term Borrowings
	At December 31, 2013 and 2012, the Company had no borrowings through the Federal Reserve Discount Window, while the borrowing capacity was $11.4 million and $11.9 million, respectively. As of December 31, 2013, the Bank had $12.7 million of municipal securities pledged to the Federal Reserve to secure potential borrowings. The Company also has various other unsecured Federal Funds agreements with correspondent banks. As of December 31, 2013 and 2012 there were $5.5 million and zero borrowings through these correspondent bank federal funds agreements, respectively.
	Securities sold under repurchase agreements are used by the Company to acquire funds from customers where the customer is required or desires to have its funds supported by collateral consisting of U.S. Treasury securities, U.S. Government agencies or other types of securities. The repurchase agreement is a promise to sell these securities to a customer at a certain price and repurchase them within one to four days after the transaction date at that same price plus interest accrued at an agreed upon rate. As of December 31, 2013 and December 31, 2012, the Company’s balance of securities sold under repurchase agreements was $61.2 million and $68.8 million, respectively. The weighted average interest rate on these agreements was 0.21% and 0.30% at December 31, 2013 and 2012, respectively.

Federal_Home_Loan_Bank_Borrowi

Federal Home Loan Bank Borrowings and Long-Term Debt	12 Months Ended
	Dec. 31, 2013
Federal Home Loan Bank Borrowings and Long-Term Debt [Abstract]	'
Federal Home Loan Bank Borrowings and Long-Term Debt [Text Block]	'
	Federal Home Loan Bank Borrowings and Long-Term Debt
	As a member of The Federal Home Loan Bank of Des Moines, the Bank may borrow funds from the FHLB in amounts up to 35% of the Bank’s total assets, provided the Bank is able to pledge an adequate amount of qualified assets to secure the borrowings. Advances from the FHLB are collateralized primarily by 1-4 unit residential, commercial and agricultural real estate first mortgages equal to various percentages of the total outstanding notes. As of December 31, 2013, the Bank had $264.0 million of collateral pledged to the FHLB. As of December 31, 2013 and 2012, Federal Home Loan Bank borrowings were as follows:
		Rates					Amount
		Minimum			Maximum		2013		2012
	(in thousands)
	Due in 2013	0.84	%	to	5.97	%	$	—	$	35,300
	Due in 2013(1)	2.63	%	to	2.63	%	—		5,000
	Due in 2014	1.25	%	to	3.4	%	39,900		39,820
	Due in 2015	2.06	%	to	3	%	20,000		20,000
	Due in 2016	1.13	%	to	2.46	%	17,000		10,000
	Due in 2017	1.09	%	to	2.78	%	10,000		5,000
	Due in 2018	1.3	%	to	1.3	%	5,000		5,000
	Thereafter	1.42	%	to	1.75	%	15,000		—
	Total						$	106,900	$	120,120
	(1) Callable quarterly.
	In connection with the Company’s merger with the Former MidWestOne in March 2008, the Company acquired $15.6 million in long-term subordinated debt from the Former MidwestOne’s issuance of a pooled trust preferred security. The junior subordinated debentures supporting the trust preferred securities have a maturity date of December 15, 2037, do not require any principal amortization and became callable on December 15, 2012 at par, and are callable in whole or in part, on any interest payment date thereafter, at the Company’s option. The interest rate was fixed on $7.8 million of the debt until December 15, 2012, at an interest rate of 6.48%, after which the rate became variable, as is the case with the remaining balance of the debt. The variable rate is based on the three-month LIBOR rate plus 1.59% with interest payable quarterly. At December 31, 2013, the interest rate was 1.83%. During 2013 the interest rate ranged from 1.90% to 1.83%. Interest expense recorded during 2013 and 2012 was $0.3 million and $0.7 million, respectively.

Income_Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2013
Income Taxes [Abstract]	'
Income Tax Disclosure [Text Block]	'
	Income Taxes
	Income taxes for the years ended December 31, 2013, 2012 and 2011 are summarized as follows:
		December 31,
		2013			2012			2011
	(in thousands)
	Current:
	Federal	$	6,841		$	4,165		$	4,147
	State	1,259			1,103			851
	Deferred	(1,454		)	(54		)	(389		)
	Total income tax provision	$	6,646		$	5,214		$	4,609
	The income tax provisions for the years ended December 31, 2013, 2012 and 2011 were less than the amounts computed by applying the maximum effective federal income tax rate of 35% for the year ended December 31, 2013, and 34% for the years of 2012 and 2011, to the income before income taxes because of the following items:
		2013			2012			2011
	(in thousands)
	Expected provision	$	8,839		$	7,394		$	6,093
	Tax-exempt interest	(2,345		)	(2,213		)	(1,722		)
	Bank-owned life insurance	(322		)	(323		)	(322		)
	State income taxes, net of federal income tax benefit	776			723			604
	Other	(302		)	(367		)	(44		)
	Total income tax provision	$	6,646		$	5,214		$	4,609
	Net deferred tax assets as of December 31, 2013 and 2012 consisted of the following components:
		December 31,
		2013			2012
	(in thousands)
	Deferred income tax assets:
	Allowance for loan losses	$	7,753		$	6,688
	Deferred compensation	1,076			1,123
	Net operating losses	3,089			2,894
	Impairment losses on securities	2,613			2,812
	Other real estate owned	767			268
	Nonaccrual interest	434			387
	Other	931			781
	Gross deferred tax assets	16,663			14,953
	Deferred income tax liabilities:
	Premises and equipment depreciation and amortization	2,012			2,174
	Federal Home Loan Bank stock	132			129
	Purchase accounting adjustments	895			1,115
	Mortgage servicing rights	871			548
	Prepaid expenses	105			190
	Unrealized gains on investment securities	620			6,584
	Deferred loan fees	238			194
	Other	315			163
	Gross deferred tax liabilities	5,188			11,097
	Net deferred income tax asset	11,475			3,856
	Valuation allowance	3,281			3,080
	Net deferred tax asset	$	8,194		$	776
	The Company has recorded a deferred tax asset for the future tax benefits of Iowa net operating loss carry forwards and certain impairment losses on investment securities. The Iowa net operating loss carry forwards amounting to approximately $35.1 million will expire in various amounts from 2019 to 2033. As of December 31, 2013 and 2012, the Company believed it was more likely than not that all temporary differences associated with the Iowa corporate tax return, as well as certain impairment and capital losses on securities at the federal and state level, would not be fully realized. Accordingly, the Company has recorded a valuation allowance to reduce the net operating loss carry forwards and certain impairment losses on securities. A valuation allowance related to the remaining deferred tax assets has not been provided because management believes it is more likely than not that the results of future operations will generate sufficient taxable income to realize the deferred tax assets.
	The Company had no material unrecognized tax benefits as of December 31, 2013 and 2012.

Employee_Benefit_Plans

Employee Benefit Plans	12 Months Ended
	Dec. 31, 2013
Employee Benefit Plans [Abstract]	'
Compensation and Employee Benefit Plans [Text Block]	'
	Employee Benefit Plans
	Prior to the Company’s merger with the Former MidWestOne, the Bank sponsored a noncontributory defined benefit pension plan for substantially all its employees. Effective December 31, 2007, the Bank elected to curtail the plan by limiting this employee benefit to those employees vested as of December 31, 2007. During the second quarter of 2012, the Company completed the liquidation of plan assets and full termination of the plan, including full benefit payout to plan participants. The total amount of the Company’s required contribution to fully fund the plan for liquidation was $6.1 million, pre-tax, which is included in Salaries and Employee Benefits expense on the consolidated statements of operations.
	The Company has a salary reduction profit-sharing 401(k) plan covering all employees fulfilling minimum age and service requirements. Employee contributions to the plan are optional. Employer contributions are discretionary and may be made to the plan in an amount equal to a percentage of each participating employee’s salary. The 401(k) contribution expense for this plan totaled $647,000, $667,000 and $629,000 for the years ended December 31, 2013, 2012 and 2011, respectively.
	The Company has an employee stock ownership plan (ESOP) covering all employees fulfilling minimum age and service requirements. Employer contributions are discretionary and may be made to the plan in an amount equal to a percentage of each participating employee’s salary. The ESOP contribution expense for this plan totaled $609,000, $635,000 and $534,000 for the years ended December 31, 2013, 2012 and 2011, respectively.
	The Company has a salary continuation plan for several officers and directors. These plans provide annual payments of various amounts upon retirement or death. The Company accrues the expense for these benefits by charges to operating expense during the period the respective officer or director attains full eligibility. The amount charged to operating expense during the years ended December 31, 2013, 2012 and 2011 totaled $350,000, $359,000 and $372,000, respectively. To provide the retirement benefits, the Company carries life insurance policies which had cash values totaling $13.9 million, $13.5 million and $13.0 million at December 31, 2013, 2012 and 2011, respectively.

Stock_Compensation_Plans

Stock Compensation Plans	12 Months Ended
	Dec. 31, 2013
Stock Compensation Plans [Abstract]	'
Disclosure of Compensation Related Costs, Share-based Payments [Text Block]	'
	Stock Compensation Plans
	The Company maintains the MidWestOne Financial Group, Inc. 2008 Equity Incentive Plan (the “Plan”) as a means to attract, retain and reward certain designated employees and directors of, and service providers to, the Company and its subsidiaries. Under the terms of the Plan, the Company may grant a total of 750,000 total shares of the Company’s common stock as stock options, stock appreciation rights or stock awards (including restricted stock units) and may also grant cash incentive awards to eligible individuals. As of December 31, 2013 and 2012, 514,191 and 496,614 shares, respectively, of the Company’s common stock remained available for future awards under the Plan.
	During 2013, the Company recognized $384,000 of stock based compensation expense, which consisted of $380,000 of expense related to restricted stock unit grants and $4,000 of expense related to stock option grants. In comparison, during 2012, the Company recognized $266,000 of stock-based compensation expense, which consisted of $234,000 for restricted stock unit grants and $32,000 for stock option grants, while total stock-based compensation expense in 2011 was $220,000 which consisted of $171,000 for restricted stock unit grants and $49,000 for stock option grants.
	Incentive Stock Options:
	The Company is required to estimate the fair value of share-based payment awards on the date of grant using an option-pricing model. The value of the portion of the award that is ultimately expected to vest is recognized as compensation expense in the Company’s consolidated statements of operations over the requisite service periods using a straight-line method. The Company assumes no projected forfeitures on its stock-based compensation, since actual historical forfeiture rates on its stock-based incentive awards have been negligible.
	The stock options have a maximum term of ten years, an exercise price equal to the fair market value of a share of stock on the date of grant and vest 25% per year over four years, with the first vesting date being the one-year anniversary of the grant date.
	The following is a summary of stock option activity for the year ended December 31, 2013:
						Weighted-
						Average
				Weighted-		Remaining	Aggregate
				Average		Contractual	Intrinsic
				Exercise		Term in	Value
		Shares		Price		Years	$0
	Outstanding at December 31, 2012	107,476		$	17.55
	Granted	—		—
	Exercised	(56,314	)	19
	Forfeited	—		—
	Expired	(3,572	)	20.03
	Outstanding at December 31, 2013	47,590		$	15.66	3.34	$	549
	Exercisable at December 31, 2013	47,590		$	15.66	3.34	$	549
	During 2013, the Company received $320,000 of cash from the exercise of stock option awards and recorded a $37,000 tax benefit from these exercises. Plan participants realized an intrinsic value of $362,000 from the exercise of these stock options during 2013. In comparison, Plan participants realized an intrinsic value of $278,000 and $22,000 from the exercise of stock options during 2012 and 2011, respectively. As of December 31, 2013, there were no remaining total compensation costs related to nonvested stock options that have not yet been recognized.
	There were no stock option awards granted in 2013, 2012, or 2011.
	Restricted Stock Units:
	Under the Plan, the Company may grant restricted stock unit awards that vest upon the completion of future service requirements or specified performance criteria. The fair value of these awards is equal to the market price of the common stock at the date of the grant. The Company recognizes stock-based compensation expense for these awards over the vesting period, using the straight-line method, based upon the number of awards ultimately expected to vest. Each restricted stock unit entitles the recipient to receive one share of stock on the vesting date. Generally, for employee awards, the restricted stock units vest 25% per year over four years, with the first vesting date being the one-year anniversary of the grant date, or 100% upon the death or disability of the recipient, or upon change of control (as defined in the Plan) of the Company. Beginning with the awards granted with an effective date of May 15, 2013, the restricted stock units awarded to directors vest 100% one year from the date of the award. Director awards made prior to May 15, 2013 generally vest 25% per year over four years. If a participant terminates employment or service prior to the end of the continuous service period, the unearned portion of the stock unit award may be forfeited, at the discretion of the Company’s Compensation Committee. The Company may also issue awards that vest upon satisfaction of specified performance criteria. For these types of awards, the final measure of compensation cost is based upon the number of shares that ultimately vest considering the performance criteria.
	The following is a summary of nonvested restricted stock unit activity for the year ended December 31, 2013:
				Weighted-
				Average
				Grant-Date
		Shares		Fair Value
	Nonvested at December 31, 2012	52,112		$	8.17
	Granted	21,700		23.1
	Vested	(19,585	)	12.84
	Forfeited	(1,830	)	20.1
	Nonvested at December 31, 2013	52,397		$	18.24
	The fair value of restricted stock unit awards that vested during 2013 was $533,000, compared to $324,000 and $153,000 during the years ended December 31, 2012 and 2011, respectively. As of December 31, 2013, the total compensation costs related to nonvested restricted stock units that have not yet been recognized totaled $594,000, and the weighted average period over which these costs are expected to be recognized is approximately 2.4 years.
	Value Information:
	The risk-free interest rate assumption is based upon observed interest rates for the expected term of the Company’s stock options. The expected volatility input into the model takes into account the historical volatility of the Company’s stock over the period that it has been publicly traded or the expected term of the option. The expected dividend yield assumption is based upon the Company’s historical dividend payout determined at the date of grant, if any.

Earnings_per_Common_Share

Earnings per Common Share	12 Months Ended
	Dec. 31, 2013
Earnings per Common Share [Abstract]	'
Earnings Per Share Disclosure [Text Block]	'
	Earnings per Common Share
	Basic per-share amounts are computed by dividing net income (the numerator) by the weighted-average number of common shares outstanding (the denominator). Diluted per share amounts assume issuance of all common stock issuable upon conversion or exercise of other securities, unless the effect is to reduce the loss or increase the income per common share from continuing operations.
	Following are the calculations for basic and diluted earnings per common share:
		Year Ended December 31,
		2013		2012		2011
	(dollars in thousands, except per share amounts)
	Basic earnings per common share computation
	Numerator:
	Net income	$	18,607	$	16,534	$	13,311
	Preferred stock dividends and discount accretion	—		—		(645		)
	Net income available to common shareholders	$	18,607	$	16,534	$	12,666
	Denominator:
	Weighted average shares outstanding	8,477,904		8,485,008		8,604,872
	Basic earnings per common share	$	2.19	$	1.95	$	1.47
	Diluted earnings per common share computation
	Numerator:
	Net income	$	18,607	$	16,534	$	13,311
	Preferred stock dividends and discount accretion	—		—		(645		)
	Net income available to common shareholders	$	18,607	$	16,534	$	12,666
	Denominator:
	Weighted average shares outstanding, included all dilutive potential shares	8,525,119		8,527,544		8,632,856
	Diluted earnings per common share	$	2.18	$	1.94	$	1.47

Regulatory_Capital_Requirement

Regulatory Capital Requirements and Restrictions on Subsidiary Cash	12 Months Ended
	Dec. 31, 2013
Regulatory Capital Requirements and Restrictions on Subsidiary Cash [Abstract]	'
Regulatory Capital Requirements under Banking Regulations [Text Block]	'
	Regulatory Capital Requirements and Restrictions on Subsidiary Cash
	The Company (on a consolidated basis) and the Bank are subject to various regulatory capital requirements administered by the federal banking agencies. Failure to meet minimum capital requirements can initiate certain mandatory and possibly additional discretionary actions by regulators that, if undertaken, could have a direct material effect on the Company’s and the Bank’s financial statements. Under capital adequacy guidelines and the regulatory framework for prompt corrective action, the Company and the Bank 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 classifications 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.
	Quantitative measures established by regulation to ensure capital adequacy require the Company and the Bank to maintain minimum amounts and ratios (set forth in the table below) of total and Tier 1 capital (as defined in the regulations) to risk-weighted assets (as defined) and of Tier 1 capital (as defined) to average assets (as defined). Management believes, as of December 31, 2013 and 2012, that the Company and the Bank met all capital adequacy requirements to which they were subject.
	As of December 31, 2013, the most recent notification from the Federal Deposit Insurance Corporation categorized the Bank as well capitalized under the regulatory framework for prompt corrective action. To be categorized as well capitalized, an institution must maintain minimum total risk-based, Tier 1 risk-based and Tier 1 leverage ratios as set forth in the table below. There are no conditions or events since the notification that management believes have changed the Bank’s category. Notwithstanding its compliance with the specified regulatory thresholds, however, the Bank’s board of directors, subsequent to December 31, 2008, adopted a capital policy pursuant to which it will maintain a ratio of Tier 1 capital to total assets of 8% or greater, which ratio is greater than the ratio required to be well capitalized under the regulatory framework for prompt corrective action. This capital policy also provides that the Bank will maintain a ratio of total capital to total risk-weighted assets of at least 10%, which is equal to the threshold for being well capitalized under the regulatory framework for prompt corrective action.
	A comparison of the Company’s and the Bank’s capital with the corresponding minimum regulatory requirements is presented below:
		Actual				For Capital Adequacy Purposes				To Be Well Capitalized Under Prompt Corrective Action Provisions
		Amount		Ratio		Amount		Ratio		Amount		Ratio
	(dollars in thousands)
	At December 31, 2013:
	Consolidated:
	Total capital/risk based	$	200,714	14.62	%	$	109,812	8	%	N/A		N/A
	Tier 1 capital/risk based	183,361		13.36		54,906		4		N/A		N/A
	Tier 1 capital/adjusted average	183,361		10.55		69,491		4		N/A		N/A
	MidWestOne Bank:
	Total capital/risk based	$	183,646	13.49	%	$	108,903	8	%	$	136,128	10	%
	Tier 1 capital/risk based	166,612		12.24		54,451		4		81,677		6
	Tier 1 capital/adjusted average	166,612		9.65		69,063		4		86,329		5
	At December 31, 2012:
	Consolidated:
	Total capital/risk based	$	185,557	13.8	%	$	107,456	8	%	N/A		N/A
	Tier 1 capital/risk based	168,729		12.56		53,728		4		N/A		N/A
	Tier 1 capital/adjusted average	168,729		9.65		69,932		4		N/A		N/A
	MidWestOne Bank:
	Total capital/risk based	$	166,949	12.55	%	$	106,398	8	%	$	132,998	10	%
	Tier 1 capital/risk based	150,304		11.3		53,199		4		79,799		6
	Tier 1 capital/adjusted average	150,304		8.66		69,386		4		86,733		5
	The ability of the Company to pay dividends to its shareholders is dependent upon dividends paid by the Bank to the Company. The Bank is subject to certain statutory and regulatory restrictions on the amount of dividends it may pay. In addition, as previously noted, subsequent to December 31, 2008, the Bank’s board of directors adopted a capital policy requiring it to maintain a ratio of Tier 1 capital to total assets of at least 8% and a ratio of total capital to risk-based capital of at least 10%. Maintenance of these ratios also could limit the ability of the Bank to pay dividends to the Company.
	The Bank is required to maintain reserve balances in cash on hand or on deposit with Federal Reserve Banks. Reserve balances totaled $1.6 million as of both December 31, 2013 and 2012, respectively.

Commitments_and_Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2013
Commitments and Contingencies [Abstract]	'
Commitments and Contingencies Disclosure [Text Block]	'
	Commitments and Contingencies
	Financial instruments with off-balance sheet risk: The Bank is a party to financial instruments with off-balance sheet risk in the normal course of business to meet the financing needs of its customers. 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 sheets.
	The Bank uses the same credit policies in making commitments and conditional obligations as it does for on-balance-sheet instruments. A summary of the Bank’s commitments at December 31, 2013 and 2012, is as follows:
		December 31,
		2013		2012
	(in thousands)
	Commitments to extend credit	$	263,887	$	287,194
	Commitments to sell loans	357		1,195
	Standby letters of credit	4,491		4,619
	Total	$	268,735	$	293,008
	The Bank’s exposure to credit loss in the event of nonperformance by the counterparty to the financial instrument for commitments to extend credit is represented by the contractual amount of those instruments. 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. 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 Bank evaluates each customer’s creditworthiness on a case-by-case basis. The amount of collateral obtained, if deemed necessary by the Bank upon extension of credit, is based on management’s credit evaluation of the party. Collateral held varies, but may include accounts receivable, crops, livestock, inventory, property and equipment, residential real estate and income-producing commercial properties.
	Commitments to sell loans are agreements to sell loans held for sale to third parties at an agreed upon price.
	Standby letters of credit are conditional commitments issued by the Bank to guarantee the performance of a customer to a third party. Those guarantees are primarily issued to support public and private borrowing arrangements and, generally, have terms of one year or less. The credit risk involved in issuing letters of credit is essentially the same as that involved in extending loan facilities to customers. The Bank holds collateral, which may include accounts receivable, inventory, property, equipment and income-producing properties, that support those commitments, if deemed necessary. In the event the customer does not perform in accordance with the terms of the agreement with the third party, the Bank would be required to fund the commitment. The maximum potential amount of future payments the Bank could be required to make is represented by the contractual amount shown in the summary above. If the commitment is funded, the Bank would be entitled to seek recovery from the customer. At both December 31, 2013 and 2012, the amount recorded as liabilities for the Bank’s potential obligations under these guarantees was $0.2 million.
	Contingencies: In the normal course of business, the Bank 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 accompanying consolidated financial statements.
	Concentrations of credit risk: Substantially all of the Bank’s loans, commitments to extend credit and standby letters of credit have been granted to customers in the Bank’s market areas. Although the loan portfolio of the Bank is diversified, approximately 65% of the loans are real estate loans and approximately 17% are agriculturally related. The concentrations of credit by type of loan are set forth in Note 3. Commitments to extend credit are primarily related to commercial loans and home equity loans. Standby letters of credit were granted primarily to commercial borrowers. Investments in securities issued by state and political subdivisions involve certain governmental entities within Iowa. Investment securities of Iowa political subdivisions totaled $140.0 million as of December 31, 2013. No individual municipality exceeded $5.0 million.

Related_Party_Transactions

Related Party Transactions	12 Months Ended
	Dec. 31, 2013
Related Party Transactions [Abstract]	'
Related Party Transactions Disclosure [Text Block]	'
	Related Party Transactions
	Certain directors of the Company and certain principal officers are customers of, and have banking transactions with, the Bank in the ordinary course of business. Such indebtedness has been incurred on substantially the same terms, including interest rates and collateral, as those prevailing at the time for comparable transactions with unrelated persons.
	The following is an analysis of the changes in the loans to related parties during the years ended December 31, 2013 and 2012:
		Year Ended December 31,
		2013			2012
	(in thousands)
	Balance, beginning	$	21,935		$	20,861
	Net decrease due to change in related parties	(150		)	(102		)
	Advances	2,310			5,387
	Collections	(1,703		)	(4,211		)
	Balance, ending	$	22,392		$	21,935
	None of these loans are past due, nonaccrual or restructured to provide a reduction or deferral of interest or principal because of deterioration in the financial position of the borrower. Deposits from these related parties totaled $7.3 million and $9.9 million as of December 31, 2013 and 2012, respectively. Deposits from related parties are accepted subject to the same interest rates and terms as those from nonrelated parties.
	The Company has from time to time engaged Neumann Monson, P.C. (“Neumann Monson”), an architectural services firm headquartered in Iowa City for which Kevin Monson, Chairman of the Company, is President, Managing Partner and majority owner, to perform architectural and design services with respect to the Company's offices. During 2013, the Company paid Neumann Monson $2,289,000 for such services. The engagement of Neumann Monson to provide the services described was reviewed by our Audit Committee, which also monitors the level of services by Neumann Monson on a periodic basis. Apart from the approval and monitoring process involving the Audit Committee, Neumann Monson was retained in the ordinary course of business and the Company believes that such services are provided to the Company on terms no less favorable than those that would have been realized in transactions with unaffiliated parties.

Estimated_Fair_Value_of_Financ

Estimated Fair Value of Financial Instruments and Fair Value Measurements	12 Months Ended
	Dec. 31, 2013
Fair Value Measurements [Abstract]	'
Fair Value Disclosures [Text Block]	'
		Estimated Fair Value of Financial Instruments and Fair Value Measurements
	Fair value is 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 is not 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.
	U.S. GAAP requires 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 should be 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 reporting entity’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, U.S. GAAP establishes a fair value hierarchy 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 – Unadjusted quoted prices in active markets for identical assets or liabilities that the reporting entity has the ability to access at the measurement date.
	•	Level 2 Inputs – Inputs other than quoted prices included in Level 1 that are observable for the asset or liability, either directly or indirectly. These might include quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the asset (such as interest rates, volatilities, prepayment speeds, credit risks, etc.) or inputs that are derived principally from or corroborated by market data by correlation or other means.
	•	Level 3 Inputs – Unobservable inputs for determining the fair values of assets or liabilities that reflect an entity’s own assumptions about the assumptions that market participants would use in pricing the assets or liabilities.
	It is the Company’s policy to maximize the use of observable inputs and minimize the use of unobservable inputs when developing fair value measurements. Market conditions in recent years have led to diminished, and in some cases, non-existent trading in certain of the financial asset classes. The Company is required to use observable inputs, to the extent available, in the fair value estimation process unless that data results from forced liquidations or distressed sales. A description of the valuation methodologies used for instruments measured at fair value, as well as the general classification of such instruments pursuant to the valuation hierarchy, is set forth below.
	Valuation methods for instruments measured at fair value on a recurring basis
	Securities Available for Sale - The Company’s investment securities classified as available for sale include: debt securities issued by the U.S. Treasury and other U.S. government corporations and agencies, debt securities issued by state and political subdivisions, mortgage-backed securities, collateralized mortgage obligations, corporate debt securities, and equity securities. Quoted exchange prices are available for equity securities, which are classified as Level 1. The Company utilizes an independent pricing service to obtain the fair value of debt securities. On a quarterly basis, the Company selects a sample of 30 securities from its primary pricing service and compares them to a secondary independent pricing service to validate value. In addition, the Company periodically reviews the pricing methodology utilized by the primary independent service for reasonableness. Debt securities issued by the U.S. Treasury and other U.S. government corporations and agencies and mortgage-backed obligations are priced utilizing industry-standard models that consider various assumptions, including time value, yield curves, volatility factors, prepayment speeds, default rates, loss severity, current market and contractual prices for the underlying financial instruments, as well as other relevant economic measures. Substantially all of these assumptions are observable in the marketplace, can be derived from observable data, or are supported by observable levels at which transactions are executed in the marketplace and are classified as Level 2. Municipal securities are valued using a type of matrix, or grid, pricing in which securities are benchmarked against the treasury rate based on credit rating. These model and matrix measurements are classified as Level 2 in the fair value hierarchy. On an annual basis, a group of selected municipal securities are priced by a securities dealer and that price is used to verify the primary independent service’s valuation.
	The Company classifies its pooled trust preferred collateralized debt obligations as Level 3. The portfolio consists of five investments in collateralized debt obligations backed by pools of trust preferred securities issued by financial institutions and insurance companies. The Company has determined that the observable market data associated with these assets do not represent orderly transactions and reflect forced liquidations or distressed sales. Based on the lack of observable market data, the Company estimated fair value based on the observable data available and reasonable unobservable market data. The Company estimated fair value based on a discounted cash flow model which used appropriately adjusted discount rates reflecting credit and liquidity risks.
	Mortgage Servicing Rights - The Company recognizes the rights to service mortgage loans for others on residential real estate loans internally originated and then sold. Mortgage servicing rights are recorded at fair value based on assumptions through a third-party valuation service. The valuation model incorporates assumptions that market participants would use in estimating future net servicing income, such as the servicing cost per loan, the discount rate, the escrow float rate, an inflation rate, ancillary income, prepayment speeds and default rates and losses. Because many of these inputs are unobservable, the valuations are classified as Level 3.
	The following table summarizes assets measured at fair value on a recurring basis as of December 31, 2013 and 2012. There were no liabilities subject to fair value measurement on a recurring basis as of these dates. The assets are segregated by the level of valuation inputs within the fair value hierarchy utilized to measure fair value:
		Fair Value Measurement at December 31, 2013 Using
	(in thousands)	Total				Quoted Prices in			Significant Other				Significant
						Active Markets for			Observable				Unobservable
						Identical Assets			Inputs				Inputs
						(Level 1)			(Level 2)				(Level 3)
	Assets:
	Available for sale debt securities:
	U.S. Government agencies and corporations	$	44,939			$	—		$	44,939			$	—
	State and political subdivisions	210,796				—			210,796				—
	Mortgage-backed securities	39,285				—			39,285				—
	Collateralized mortgage obligations	169,223				—			169,223				—
	Corporate debt securities	29,944				—			29,944				—
	Collateralized debt obligations	1,317				—			—				1,317
	Total available for sale debt securities	495,504				—			494,187				1,317
	Available for sale equity securities:
	Other equity securities	3,057				3,057			—				—
	Total available for sale equity securities	3,057				3,057			—				—
	Total securities available for sale	$	498,561			$	3,057		$	494,187			$	1,317
	Mortgage servicing rights	$	2,298			$	—		$	—			$	2,298
		Fair Value Measurement at December 31, 2012 Using
	(in thousands)	Total				Quoted Prices in			Significant				Significant
						Active Markets for			Other				Unobservable
						Identical Assets			Observable				Inputs
						(Level 1)			Inputs				(Level 3)
									(Level 2)
	Assets:
	Available for sale debt securities:
	U.S. Government agencies and corporations	$	69,783			$	—		$	69,783			$	—
	State and political subdivisions	218,019				—			218,019				—
	Mortgage-backed securities	59,256				—			59,256				—
	Collateralized mortgage obligations	183,862				—			183,862				—
	Corporate debt securities	24,185				—			24,185				—
	Collateralized debt obligations	755				—			—				755
	Total available for sale debt securities	555,860				—			555,105				755
	Available for sale equity securities:
	Other equity securities	1,681				1,681			—				—
	Total available for sale equity securities:	1,681				1,681			—				—
	Total securities available for sale	$	557,541			$	1,681		$	555,105			$	755
	Mortgage servicing rights	$	1,484			$	—		$	—			$	1,484
	There were no transfers of assets between levels of the fair value hierarchy during the years ended December 31, 2013 and 2012.
	The following table presents additional information about assets measured at fair market value on a recurring basis for which the Company has utilized Level 3 inputs to determine fair value for the years ended December 31, 2013 and 2012:
			2013							2012
			Collateralized				Mortgage			Collateralized				Mortgage
			Debt				Servicing			Debt				Servicing
			Obligations				Rights			Obligations				Rights
	(in thousands)
	Beginning balance		$	755			$	1,484		$	806			$	1,265
	Transfers into Level 3		—				—			—				—
	Transfers out of Level 3		—				—			—				—
	Total gains (losses):
	Included in earnings		(18		)		293			(345		)		(500		)
Included in other comprehensive income		822				—			294				—
Purchases, issuances, sales, and settlements:
Purchases		—				—			—				—
Issuances		—				521			—				719
Sales		—				—			—				—
Settlements		(242		)		—			—				—
Ending Balance		$	1,317			$	2,298		$	755			$	1,484
In December 2013 the Company was notified by the trustee of one of the collateralized debt obligations it owns that the security was in the process of being liquidated. The Company recorded a receivable for the expected amount of the liquidation payment and wrote-off the book value of the security.
The following table presents the amount of gains and losses included in earnings and other comprehensive income for the years ended December 31, 2013 and 2012 that are attributable to the change in unrealized gains and losses relating to those assets still held, and the line item in the consolidated financial statements in which they are included:
		2013							2012
		Collateralized				Mortgage			Collateralized				Mortgage
		Debt				Servicing			Debt				Servicing
		Obligations				Rights			Obligations				Rights
(in thousands)
Total gains (losses) for the period in earnings*		$	(18	)		$	814		$	(345	)		$	219
Change in unrealized losses for the period included in other comprehensive income		822				—			294				—
* Losses on collateralized debt obligations are included in gain on sale or call of available for sale securities, while gains on mortgage servicing rights are included in mortgage origination and loan servicing fees, both in the consolidated statements of operations.
Changes in the fair value of available-for-sale securities are included in other comprehensive income to the extent the changes are not considered OTTI. OTTI tests are performed on a quarterly basis and any decline in the fair value of an individual security below its cost that is deemed to be other than temporary results in a write-down that is reflected directly in the Company’s consolidated statements of operations.
Valuation methods for instruments measured at fair value on a nonrecurring basis
Collateral Dependent Impaired Loans - From time to time, a loan is considered impaired and an allowance for credit losses is established. The specific reserves for collateral dependent impaired loans are based on the fair value of the collateral less estimated costs to sell. The fair value of collateral is determined based on appraisals. In some cases, adjustments are made to the appraised values due to various factors, including age of the appraisal, age of comparables included in the appraisal, and known changes in the market and in the collateral. Because many of these inputs are unobservable, the valuations are classified as Level 3.
Other Real Estate Owned (“OREO”) - OREO represents property acquired through foreclosures and settlements of loans. Property acquired is carried at the lower of the carrying amount of the loan at the time of acquisition, or the estimated fair value of the property, less disposal costs. The Company considers third party appraisals as well as independent fair value assessments from real estate brokers or persons involved in selling OREO in determining the fair value of particular properties. Accordingly, the valuation of OREO is subject to significant external and internal judgment. The Company also periodically reviews OREO to determine whether the property continues to be carried at the lower of its recorded book value or fair value of the property, less disposal costs. Because many of these inputs are unobservable, the valuations are classified as Level 3.
The following table discloses the Company’s estimated fair value amounts of its financial instruments recorded at fair value on a nonrecurring basis. It is management’s belief that the fair values presented below are reasonable based on the valuation techniques and data available to the Company as of December 31, 2013 and 2012, as more fully described below.
	Fair Value Measurement at December 31, 2013 Using
(in thousands)	Total				Quoted Prices in			Significant Other				Significant
					Active Markets for			Observable				Unobservable
					Identical Assets			Inputs				Inputs
					(Level 1)			(Level 2)				(Level 3)
Assets:
Collateral dependent impaired loans:
Agricultural	$	—			$	—		$	—			$	—
Commercial and industrial	1,043				—			—				1,043
Credit cards	—				—			—				—
Overdrafts	—				—			—				—
Commercial real estate:
Construction and development	136				—			—				136
Farmland	65				—			—				65
Multifamily	—				—			—				—
Commercial real estate-other	1,786				—			—				1,786
Total commercial real estate	1,987				—			—				1,987
Residential real estate:
One- to four- family first liens	186				—			—				186
One- to four- family junior liens	30				—			—				30
Total residential real estate	216				—			—				216
Consumer	44				—			—				44
Collateral dependent impaired loans	3,290				—			—				3,290
Other real estate owned	1,770				—			—				1,770
	Fair Value Measurement at December 31, 2012 Using
(in thousands)	Total				Quoted Prices in			Significant Other				Significant
					Active Markets for			Observable				Unobservable
					Identical Assets			Inputs				Inputs
					(Level 1)			(Level 2)				(Level 3)
Assets:
Collateral dependent impaired loans:
Agricultural	$	—			$	—		$	—			$	—
Commercial and industrial	1,106				—			—				1,106
Credit cards	—				—			—				—
Overdrafts	—				—			—				—
Commercial real estate:
Construction and development	496				—			—				496
Farmland	—				—			—				—
Multifamily	—				—			—				—
Commercial real estate-other	501				—			—				501
Total commercial real estate	997				—			—				997
Residential real estate:
One- to four- family first liens	114				—			—				114
One- to four- family junior liens	19				—			—				19
Total residential real estate	133				—			—				133
Consumer	32				—			—				32
Collateral dependent impaired loans	2,268				—			—				2,268
Other real estate owned	3,278				—			—				3,278
The following presents the carrying amount and estimated fair value of the financial instruments held by the Company at December 31, 2013 and 2012. The information presented is subject to change over time based on a variety of factors. The operations of the Company are managed on a going concern basis and not a liquidation basis. As a result, the ultimate value realized from the financial instruments presented could be substantially different when actually recognized over time through the normal course of operations. Additionally, a substantial portion of the Company’s inherent value is the Bank’s capitalization and franchise value. Neither of these components has been given consideration in the presentation of fair values below.
	December 31, 2013
	Carrying				Estimated			Quoted Prices in Active Markets for Identical Assets (Level 1)				Significant Other Observable Inputs (Level 2)				Significant Unobservable Inputs
	Amount				Fair Value											(Level 3)
(in thousands)
Financial assets:
Cash and cash equivalents	$	24,890			$	24,890		$	24,890			$	—			$	—
Investment securities:
Available for sale	498,561				498,561			3,057				494,187				1,317
Held to maturity	32,625				30,191			—				30,191				—
Total investment securities	531,186				528,752			3,057				524,378				1,317
Loans held for sale	357				367			—				—				367
Loans, net:
Agricultural	95,712				95,609			—				—				95,609
Commercial and industrial	257,153				256,257			—				—				256,257
Credit cards	998				998			—				—				998
Overdrafts	415				415			—				—				415
Commercial real estate:
Construction and development	71,433				71,569			—				—				71,569
Farmland	84,387				85,058			—				—				85,058
Multifamily	54,883				54,953			—				—				54,953
Commercial real estate-other	217,993				219,213			—				—				219,213
Total commercial real estate	428,696				430,793			—				—				430,793
Residential real estate:
One- to four- family first liens	217,765				218,257			—				—				218,257
One- to four- family junior liens	52,903				53,798			—				—				53,798
Total residential real estate	270,668				272,055			—				—				272,055
Consumer	18,591				18,638			—				—				18,638
Total loans, net	1,072,233				1,074,765			—				—				1,074,765
Loan pool participations, net	25,533				25,533			—				—				25,533
Accrued interest receivable	10,409				10,409			10,409				—				—
Federal Home Loan Bank stock	9,226				9,226			—				9,226				—
Financial liabilities:
Deposits:
Non-interest-bearing demand	222,359				222,359			222,359				—				—
Interest-bearing checking	592,673				592,673			592,673				—				—
Savings	94,559				94,559			94,559				—				—
Certificates of deposit under $100,000	256,283				256,549			—				256,549				—
Certificates of deposit $100,000 and over	209,068				209,543			—				209,543				—
Total deposits	1,374,942				1,375,683			909,591				466,092				—
Federal funds purchased and securities sold under agreements to repurchase	66,665				66,665			66,665				—				—
Federal Home Loan Bank borrowings	106,900				107,356			—				—				107,356
Long-term debt	15,464				9,872			—				—				9,872
Accrued interest payable	765				765			765				—				—
	December 31, 2012
	Carrying				Estimated			Quoted Prices in Active Markets for Identical Assets (Level 1)				Significant Other Observable Inputs (Level 2)				Significant Unobservable Inputs
	Amount				Fair Value											(Level 3)
(in thousands)
Financial assets:
Cash and cash equivalents	$	47,191			$	47,191		$	47,191			$	—			$	—
Investment securities:
Available for sale	557,541				557,541			1,681				555,105				755
Held to maturity	32,669				32,920			—				32,920				—
Total investment securities	590,210				590,461			1,681				588,025				755
Loans held for sale	1,195				1,224			—				—				1,224
Loans, net:
Agricultural	83,602				83,180			—				—				83,180
Commercial and industrial	232,337				230,615			—				—				230,615
Credit cards	982				982			—				—				982
Overdrafts	562				562			—				—				562
Commercial real estate:
Construction and development	84,645				84,335			—				—				84,335
Farmland	80,425				79,931			—				—				79,931
Multifamily	47,407				47,450			—				—				47,450
Commercial real estate-other	221,229				222,421			—				—				222,421
Total commercial real estate	433,706				434,137			—				—				434,137
Residential real estate:
One- to four- family first liens	195,126				193,906			—				—				193,906
One- to four- family junior liens	54,449				54,808			—				—				54,808
Total residential real estate	249,575				248,714			—				—				248,714
Consumer	18,563				18,631			—				—				18,631
Total loans, net	1,019,327				1,016,821			—				—				1,016,821
Loan pool participations, net	35,650				35,650			—				—				35,650
Accrued interest receivable	10,292				10,292			10,292				—				—
Federal Home Loan Bank stock	11,087				11,087			—				11,087				—
Financial liabilities:
Deposits:
Non-interest bearing demand	190,491				190,491			190,491				—				—
Interest-bearing checking	582,283				582,283			582,283				—				—
Savings	91,603				91,603			91,603				—				—
Certificates of deposit under $100,000	312,489				314,978			—				314,978				—
Certificates of deposit $100,000 and over	222,867				224,311			—				224,311				—
Total deposits	1,399,733				1,403,666			864,377				539,289				—
Federal funds purchased and securities sold under agreements to repurchase	68,823				68,823			68,823				—				—
Federal Home Loan Bank borrowings	120,120				123,202			—				—				123,202
Long-term debt	15,464				9,939			—				—				9,939
Accrued interest payable	1,475				1,475			1,475				—				—
•	Cash and cash equivalents, federal funds purchased, securities sold under repurchase agreements, and accrued interest are instruments with carrying values that approximate fair value.
•	Investment securities available for sale are measured at fair value on a recurring basis. Held to maturity securities are carried at amortized cost. Fair value is based upon quoted prices, if available. If a quoted price is not available, the fair value is obtained from benchmarking the security against similar securities by using a third-party pricing service.
•	Loans held for sale are carried at the lower of cost or fair value, with fair value being based on recent observable loan sales. The portfolio has historically consisted primarily of residential real estate loans.
•	For variable-rate loans that reprice frequently and with no significant change in credit risk, fair values are based on carrying values. The fair values for other loans are determined using estimated future cash flows, discounted at the interest rates currently being offered for loans with similar terms to borrowers with similar credit quality. The Company does record nonrecurring fair value adjustments to loans to reflect (1) partial write-downs and allowances that are based on the observable market price or appraised value of the collateral or (2) the full charge-off of the loan carrying value.
•	Loan pool participation carrying values represent the discounted price paid by us to acquire our participation interests in the various loan pool participations purchased, which approximates fair value.
•	The fair value of Federal Home Loan Bank stock is estimated at its carrying value and redemption price of $100 per share.
•	Deposit liabilities are carried at historical cost. The fair value of demand deposits, savings accounts and certain money market account deposits is the amount payable on demand at the reporting date. The fair value of fixed maturity certificates of deposit is estimated using the rates currently offered for deposits of similar remaining maturities. If the fair value of the fixed maturity certificates of deposit is calculated at less than the carrying amount, the carrying value of these deposits is reported as the fair value.
•	Federal Home Loan Bank borrowings and long-term debt are recorded at historical cost. The fair value of these items is estimated using discounted cash flow analysis, based on the Company's current incremental borrowing rates for similar types of borrowing arrangements.
The following presents the valuation technique(s), observable inputs, and quantitative information about the unobservable inputs used for fair value measurements of the financial instruments held by the Company at December 31, 2013, categorized within Level 3 of the fair value hierarchy:
	Quantitative Information About Level 3 Fair Value Measurements
(dollars in thousands)	Fair Value at December 31, 2013				Valuation Techniques(s)		Unobservable Input	Range of Inputs						Weighted Average
Collateralized debt obligations	$	1,317			Discounted cash flows		Pretax discount rate	15	%		15	%		15	%
							Actual defaults	14	%		17.4	%		15.3	%
							Actual deferrals	4.7	%		16	%		8.7	%
							Projected defaults	10.4	%		13	%		10.9	%
Collateral dependent impaired loans:
Commercial and industrial	1,043				Modified appraised value		Third party appraisal	NM *			NM *			NM *
							Appraisal discount	NM *			NM *			NM *
Construction & development	136				Modified appraised value		Third party appraisal	NM *			NM *			NM *
							Appraisal discount	NM *			NM *			NM *
Farmland	65				Modified appraised value		Third party appraisal	NM *			NM *			NM *
							Appraisal discount	NM *			NM *			NM *
Commercial real estate-other	1,786				Modified appraised value		Third party appraisal	NM *			NM *			NM *
							Appraisal discount	NM *			NM *			NM *
Residential real estate one- to four-	186				Modified appraised value		Third party appraisal	NM *			NM *			NM *
family first liens							Appraisal discount	NM *			NM *			NM *
Residential real estate one- to four-	30				Modified appraised value		Third party appraisal	NM *			NM *			NM *
family junior liens							Appraisal discount	NM *			NM *			NM *
Consumer	44				Modified appraised value		Third party appraisal	NM *			NM *			NM *
							Appraisal discount	NM *			NM *			NM *
Mortgage servicing rights	2,298				Discounted cash flows		Constant prepayment rate	6.77	%		17.15	%		7.64	%
							Pretax discount rate	10	%		13	%		10.17	%
Other real estate owned	1,770				Modified appraised value		Third party appraisal	NM *			NM *			NM *
							Appraisal discount	NM *			NM *			NM *
* Not Meaningful. Third party appraisals are obtained as to the value of the underlying asset, but disclosure of this information would not provide meaningful information, as the range will vary widely from loan to loan. Types of discounts considered include age of the appraisal, local market conditions, current condition of the property, and estimated sales costs. These discounts will also vary from loan to loan, thus providing a range would not be meaningful.
Changes in assumptions or estimation methodologies may have a material effect on these estimated fair values.

Variable_Interest_Entities

Variable Interest Entities	12 Months Ended
	Dec. 31, 2013
Variable Interest Entities [Abstract]	'
Variable Interest Entity [Text Block]	'
	Variable Interest Entities
	The Company has invested in certain participation certificates of loan pools which are purchased, held and serviced by the third-party independent servicing corporation. The Company’s portfolio holds approximately 95% of participation interests in pools of loans owned and serviced by States Resources Corporation (“SRC”), a third-party loan servicing organization in Omaha, Nebraska, in which the Company participates. SRC’s owner holds the remaining interest. The Company does not have any ownership interest in or exert any control over SRC, and thus it is not included in the consolidated financial statements.
	These pools of loans were purchased from large nonaffiliated banking organizations and from the FDIC acting as receiver of failed banks and savings associations. As loan pools were put out for bid (generally in a sealed bid auction) SRC’s due diligence teams evaluated the loans and determined their interest in bidding on the pool. After the due diligence, the Company’s management reviewed this information and decided if it wished to continue in the process. If the decision to consider a bid was made, SRC conducted additional analysis to determine the appropriate bid price. This analysis involved discounting loan cash flows with adjustments made for expected losses and changes in collateral values as well as targeted rates of return. A cost or investment basis was assigned to each individual loan on a cents-per-dollar (discounted price) basis based on SRC’s assessment of the recovery potential of each loan.
	Once a bid was awarded to SRC, the Company assumed the risk of profit or loss but on a non-recourse basis so the risk is limited to its initial investment. The extent of the risk is also dependent upon: the debtor or guarantor’s financial condition, the possibility that a debtor or guarantor may file for bankruptcy protection, SRC’s ability to locate any collateral and obtain possession, the value of such collateral, and the length of time it takes to realize the recovery either through collection procedures, legal process, or resale of the loans after a restructure.
	Loan pool participations are shown on the Company’s consolidated balance sheets as a separate asset category. The original carrying value or investment basis of loan pool participations is the discounted price paid by the Company to acquire its interests, which, as noted, is less than the face amount of the underlying loans. The Company’s investment basis is reduced as SRC recovers principal on the loans and remits its share to the Company or as loan balances are written off as uncollectible.

Parent_Company_Only_Financial_

Parent Company Only Financial Information	12 Months Ended
	Dec. 31, 2013
Parent Company Only Financial Information [Abstract]	'
Condensed Financial Information of Parent Company Only Disclosure [Text Block]	'
	Parent Company Only Financial Information
	The following is condensed financial information of MidWestOne Financial Group, Inc. as of December 31, 2013 and 2012 (parent company only):
		As of December 31,
		2013			2012
	(in thousands)
	Balance Sheets
	Assets:
	Cash	$	5,781		$	5,777
	Investment in subsidiaries	177,190			171,528
	Marketable equity securities, available for sale	2,111			1,681
	Loan pool participations, net	3,409			6,128
	Income tax receivable	75			8
	Deferred income taxes	729			269
	Other assets	4,447			4,282
	Total assets	$	193,742		$	189,673
	Liabilities and Shareholders’ Equity
	Liabilities:
	Long-term debt	$	15,464		$	15,464
	Other liabilities	262			277
	Total liabilities	15,726			15,741
	Shareholders’ equity:
	Capital stock, preferred	—			—
	Capital stock, common	8,690			8,690
	Additional paid-in capital	80,506			80,383
	Treasury stock	(3,702		)	(3,316		)
	Retained earnings	91,473			77,125
	Accumulated other comprehensive income	1,049			11,050
	Total shareholders’ equity	178,016			173,932
	Total liabilities and shareholders’ equity	$	193,742		$	189,673
	The following is condensed financial information of MidWestOne Financial Group, Inc. as of December 31, 2013, 2012, and 2011 (parent company only):
		Year Ended December 31,
		2013			2012			2011
	(in thousands)
	Statements of Income
	Dividends received from subsidiaries	$	4,006		$	5,520		$	18,863
	Interest income and dividends on marketable equity securities	33			168			190
	Interest and discount on loan pool participations	(940		)	(2,149		)	(1,474		)
	Investment securities gains	—			381			—
	Interest on long-term debt	(296		)	(656		)	(657		)
	Operating expenses	(1,034		)	(1,064		)	(983		)
	Income before income taxes and equity in subsidiaries’ undistributed income	1,769			2,200			15,939
	Income tax benefit	(890		)	(1,355		)	(1,030		)
	Income before equity in subsidiaries’ undistributed income (loss)	2,659			3,555			16,969
	Equity in subsidiaries’ undistributed income (loss)	15,948			12,979			(3,658		)
	Net income	$	18,607		$	16,534		$	13,311
	The following is condensed financial information of MidWestOne Financial Group, Inc. as of December 31, 2013, 2012, and 2011 (parent company only):
		Year Ended December 31,
		2013			2012			2011
	(in thousands)
	Statements of Cash Flows
	Cash flows from operating activities:
	Net income	$	18,607		$	16,534		$	13,311
	Adjustments to reconcile net income to net cash provided by operating activities:
	Undistributed (earnings) loss of subsidiaries, net of dividends and distributions	(15,948		)	(12,979		)	3,658
	Depreciation	—			—			2
	Deferred income taxes	(583		)	(106		)	1
	Investment securities gain	—			(381		)	—
	Stock based compensation	384			266			220
	Increase in other assets	(232		)	(158		)	(85		)
	Increase (decrease) in other liabilities	(15		)	4			(31		)
	Net cash provided by operating activities	2,213			3,180			17,076
	Cash flows from investing activities
	Proceeds from sales of investment securities	2			1,131			—
Purchase of investment securities	(24		)	(1,192		)	(10		)
Loan participation pools, net	2,719			5,834			801
Proceeds from sales of premises and equipment	—			—			7
Net cash provided by investing activities	2,697			5,773			798
Cash flows from financing activities:
Stock options exercised	320			590			83
Repurchase of common stock	(967		)	(1,810		)	(1,498		)
Dividends paid	(4,259		)	(3,054		)	(2,404		)
Redemption of preferred stock	—			—			(16,000		)
Repurchase of common stock warrant	—			—			(1,000		)
Net cash used in financing activities	(4,906		)	(4,274		)	(20,819		)
Increase (decrease) in cash	4			4,679			(2,945		)
Cash Balance:
Beginning	5,777			1,098			4,043
Ending	$	5,781		$	5,777		$	1,098

Segment_Reporting

Segment Reporting	12 Months Ended
	Dec. 31, 2013
Segment Reporting [Abstract]	'
Segment Reporting Disclosure [Text Block]	'
	Segment Reporting
	The Company’s activities are considered to be a single industry segment for financial reporting purposes. The Company is engaged in the business of commercial and retail banking, investment management and insurance services with operations throughout central and eastern Iowa. Substantially all income is derived from a diverse base of commercial, mortgage and retail lending activities, loan pools and investments.

Subsequent_Events

Subsequent Events	12 Months Ended
	Dec. 31, 2013
Subsequent Events [Abstract]	'
Subsequent Events [Text Block]	'
	Subsequent Events
	Management evaluated subsequent events through the date the consolidated financial statements were issued. Events or transactions occurring after December 31, 2013, but prior to the date the consolidated financial statements were issued, that provided additional evidence about conditions that existed at December 31, 2013 have been recognized in the consolidated financial statements for the period ended December 31, 2013. Events or transactions that provided evidence about conditions that did not exist at December 31, 2013, but arose before the consolidated financial statements were issued, have not been recognized in the consolidated financial statements for the period ended December 31, 2013.
	On January 21, 2014, the Board of Directors of the Company declared a cash dividend of $0.145 per share payable on March 17, 2014 to shareholders of record as of the close of business on March 1, 2014.
	On January 27, 2014, the Company sold its remaining five collateralized debt obligation investment securities for a net gain on sale of $0.8 million.
	Pursuant to the Company’s share repurchase program approved on January 15, 2013 the Company has purchased 29,466 shares of common stock subsequent to December 31, 2013 and through March 4, 2014 for a total cost of $0.7 million inclusive of transaction costs, leaving $3.3 million remaining available under the program.

Quarterly_Results_of_Operation

Quarterly Results of Operations (unaudited)	12 Months Ended
	Dec. 31, 2013
Quarterly Results of Operations [Abstract]	'
Quarterly Financial Information [Text Block]	'
	Quarterly Results of Operations (unaudited)
		Three Months Ended
		31-Dec		30-Sep		30-Jun		31-Mar
	(in thousands, except per share amounts)
	2013
	Interest income	$	16,020	$	16,116	$	16,768	$	17,190
	Interest expense	2,723		2,851		3,159		3,399
	Net interest income	13,297		13,265		13,609		13,791
	Provision for loan losses	300		250		600		200
	Noninterest income	3,234		3,800		3,713		3,981
	Noninterest expense	10,225		10,283		10,585		10,994
	Income before income taxes	6,006		6,532		6,137		6,578
	Income tax expense	1,584		1,668		1,606		1,788
	Net income	$	4,422	$	4,864	$	4,531	$	4,790
	Net income per common share - basic	$	0.52	$	0.57	$	0.54	$	0.56
	Net income per common share - diluted	$	0.52	$	0.57	$	0.53	$	0.56
	2012
	Interest income	$	16,924	$	17,586	$	17,277	$	17,515
	Interest expense	3,767		3,867		4,051		4,267
	Net interest income	13,157		13,719		13,226		13,248
	Provision for loan losses	650		575		575		579
	Noninterest income	4,111		3,258		8,167		4,201
	Noninterest expense	10,864		10,713		16,580		10,803
	Income before income taxes	5,754		5,689		4,238		6,067
	Income tax expense	1,402		1,451		726		1,635
	Net income	$	4,352	$	4,238	$	3,512	$	4,432
	Net income per common share - basic	$	0.51	$	0.5	$	0.42	$	0.52
	Net income per common share - diluted	$	0.51	$	0.5	$	0.41	$	0.52

Nature_of_Business_and_Signifi

Nature of Business and Significant Accounting Policies Nature of Business (Policies)	12 Months Ended
	Dec. 31, 2013
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'
Nature of Operations [Text Block]	'
	The Company is a bank holding company registered under the Bank Holding Company Act of 1956 that has elected to be a financial holding company. It is headquartered in Iowa City, Iowa and owns 100% of the outstanding common stock of MidWestOne Bank, Iowa City, and 100% of the common stock of MidWestOne Insurance Services, Inc., Oskaloosa, Iowa. MidWestOne Bank (the “Bank”) is also headquartered in Iowa City, Iowa, and provides services to individuals, businesses, governmental units and institutional customers in central and east-central Iowa. The Bank has office locations in Belle Plaine, Burlington, Cedar Falls, Conrad, Coralville, Davenport, Fairfield, Fort Madison, Melbourne, North English, North Liberty, Oskaloosa, Ottumwa, Parkersburg, Pella, Sigourney, Waterloo and West Liberty, Iowa. MidWestOne Insurance Services, Inc. provides personal and business insurance services in Pella, Melbourne and Oskaloosa, Iowa. The Bank is actively engaged in many areas of commercial banking, including: acceptance of demand, savings and time deposits; making commercial, real estate, agricultural and consumer loans, and other banking services tailored for its individual customers. The Wealth Management area of the Bank administers estates, personal trusts, conservatorships, pension and profit-sharing accounts along with providing other management services to customers.

Nature_of_Business_and_Signifi1

Nature of Business and Significant Accounting Policies Presentation of Financial Statements (Policies)	12 Months Ended
	Dec. 31, 2013
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'
Accounting Changes and Error Corrections [Text Block]	'
	During the quarter ended June 30, 2013, the Company identified an immaterial error in its accounting for other-than-temporary impairment on its portfolio of collateralized debt obligations. This error related to the identification of credit-related impairments subsequent to the Company's adoption of Financial Accounting Standards Board (FASB) Staff Position (FSP) No. FAS 115-2 and FAS 124-2, “Recognition and Presentation of Other-Than-Temporary Impairments” as of April 1, 2009.
	As a result, the Company has adjusted prior period amounts for the immaterial error. Specifically, on the Company's consolidated statement of shareholders' equity the balance of retained earnings was reduced by $2,654,000, from $66,299,000 to $63,645,000, and accumulated other comprehensive income was increased by $2,654,000, from $3,484,000 to $6,138,000, as of December 31, 2011, to reflect the effect of the error in the years ended December 31, 2009, 2010, and 2011. On the Company's consolidated balance sheets, retained earnings and accumulated other comprehensive income as of December 31, 2012, were decreased and increased, respectively, by $2,870,000. Of the adjustment amounts as of December 31, 2011 and 2012, $2,322,000 relates to the after-tax effect of credit impairments that should have been recognized in the Company's consolidated statements of operations for the year ended December 31, 2009.
	The correction also resulted in the following adjustments to historical amounts: (i) on the Company's consolidated statement of shareholders' equity, the balance of retained earnings was reduced by $2,648,000, from $55,619,000 to $52,971,000, and accumulated other comprehensive income was increased by $2,648,000, from $(1,826,000) to $822,000, as of December 31, 2010, to reflect the effect of the error in the years ended December 31, 2009 and 2010; (ii) on the Company's consolidated statements of operations, net income for the year ended December 31, 2011 was reduced $6,000, from $13,317,000 to $13,311,000, with no change in the reported basic or diluted earnings per share for such time period; (iii) on the Company's consolidated statements of operations, net income for the year ended December 31, 2012 was reduced $217,000, from $16,751,000 to $16,534,000, with basic earnings per share decreasing from $1.97 to $1.95 and diluted earnings per share decreasing from $1.96 to $1.94 during such period; (iv) corresponding adjustments to the Company's comprehensive income were made for the years ended December 31, 2012 and 2011; and (v) amounts in relevant footnotes for all periods presented have been corrected for the effects of this immaterial error.
Comparability of Prior Year Financial Data, Policy [Policy Text Block]	'
	Cash receipts and cash payments resulting from acquisitions and sales of loans originated for sale are classified as operating cash flows on a gross basis in the consolidated statements of cash flows.
Stockholders' Equity Note, Redeemable Preferred Stock, Issue, Policy [Policy Text Block]	'
	On February 6, 2009, the Company issued 16,000 shares of Fixed Rate Cumulative Perpetual Preferred Stock, Series A (“Preferred Stock”), together with a ten-year warrant to acquire 198,675 shares of common stock, to the U.S. Department of the Treasury (the “Treasury”) under the Capital Purchase Program (the “CPP”) for an aggregate purchase price of $16.0 million. Upon issuance, the fair values of the senior preferred stock and the common stock warrants were computed as if the securities were issued on a stand-alone basis.
	On July 6, 2011, the Company announced that it had repurchased the 16,000 shares of Preferred Stock issued to the Treasury under the CPP for an aggregate repurchase price of $16.1 million including accrued interest.
	On July 27, 2011, the Company announced that it had repurchased the common stock warrant issued to the Treasury as part of the CPP for $1.0 million. The warrant had allowed Treasury to purchase 198,675 shares of MidWestOne common stock at $12.08 per share.

Nature_of_Business_and_Signifi2

Nature of Business and Significant Accounting Policies Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2013
Accounting Policies [Abstract]	'
Use of Estimates, Policy [Policy Text Block]	'
	Accounting estimates: The preparation of financial statements in conformity with U.S. generally accepted accounting principles (“U.S. GAAP”) requires management to make estimates and assumptions that affect the reported amount of assets and liabilities and disclosure of contingent 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. The U.S. economic environment in recent years has increased the degree of uncertainty inherent in these estimates.
	Certain significant estimates: The allowance for loan losses and the fair values of investment securities and other financial instruments involve certain significant estimates made by management. These estimates are reviewed by management routinely and it is reasonably possible that circumstances that exist may change in the near-term future and that the effect could be material to the consolidated financial statements.
Consolidation, Policy [Policy Text Block]	'
	The consolidated financial statements include the accounts of MidWestOne Financial Group, Inc., a bank holding company, and its wholly-owned subsidiaries which include MidWestOne Bank, a state chartered bank whose primary federal regulator is the Federal Deposit Insurance Corporation, and MidWestOne Insurance Services, Inc. All significant inter-company accounts and transactions have been eliminated in consolidation.
	Trust assets, other than cash deposits held by the Bank in a fiduciary or agency capacity for its customers, are not included in the accompanying consolidated financial statements because such accounts are not assets of the Bank.
	In the normal course of business, the Company may enter into a transaction with a variable interest entity (“VIE”). VIEs are legal entities whose investors lack the ability to make decisions about the entity’s activities, or whose equity investors do not have the right to receive the residual returns of the entity. The applicable accounting guidance requires the Company to perform ongoing quantitative and qualitative analysis to determine whether it must consolidate any VIE. The Company does not have any ownership interest in or exert any control over any VIE, and thus no VIEs are included in the consolidated financial statements. Investments in non-marketable loan participation certificates for which the Company does not have the ability to exert significant influence are accounted for using the cost method.
Cash and Cash Equivalents, Policy [Policy Text Block]	'
	For purposes of reporting cash flows, cash and due from banks includes cash on hand, amounts due from banks, and federal funds sold. Cash flows from portfolio loans originated by the Bank, deposits, federal funds purchased, and securities sold under agreements to repurchase are reported net.
Marketable Securities, Held-to-maturity Securities, Policy [Policy Text Block]	'
	Certain debt securities that the Company has the positive intent and ability to hold to maturity are classified as held to maturity and recorded at amortized cost. Securities not classified as held to maturity, including equity securities with readily determinable fair values, are classified as available for sale and recorded at fair value, with unrealized gains and losses excluded from earnings and reported in other comprehensive income.
Marketable Securities, Available-for-sale Securities, Policy [Policy Text Block]	'
	The Company carries its investment securities at fair value, and the Company employs valuation techniques which utilize observable inputs when those inputs are available. These observable inputs reflect assumptions market participants would use in pricing the security, developed based on market data obtained from sources independent of the Company. When such information is not available, the Company employs valuation techniques which utilize unobservable inputs, or those which reflect the Company’s own assumptions about assumptions that market participants would use, based on the best information available in the circumstances. These valuation methods typically involve cash flow and other financial modeling techniques. Changes in underlying factors, assumptions, estimates, or other inputs to the valuation techniques could have a material impact on the Company’s future financial condition and results of operations. Fair value measurements are required to be classified as Level 1 (quoted prices), Level 2 (based on observable inputs) or Level 3 (based on unobservable inputs) discussed in more detail in Note 18 to the consolidated financial statements. Available for sale securities are recorded at fair value with unrealized gains and losses excluded from earnings and reported as a separate component of shareholders’ equity until realized.
	Purchase premiums and discounts are recognized in interest income using the interest method over the terms of the securities. Declines in the fair value of held to maturity and available for sale securities below their cost that are deemed to be other than temporary are reflected in earnings as realized losses. In determining whether other than temporary impairment exists, management considers whether: (1) we have the intent to sell the security; (2) it is more likely than not that we will be required to sell the security before recovery of the amortized cost basis; and (3) we do not expect to recover the entire amortized cost basis of the security. Gains and losses on the sale of securities are recorded on the trade date and are determined using the specific identification method.
Finance, Loan and Lease Receivables, Held-for-investment, Policy [Policy Text Block]	'
	Loans are stated at the principal amount outstanding, net of deferred loan fees and costs and allowance for loan losses. Interest on loans is credited to income as earned based on the principal amount outstanding. Deferred loan fees and costs are amortized using the level yield method over the remaining maturities on the loans.
	The accrual of interest on mortgage and commercial loans is discontinued at the time the loan is 90 days past due, unless the credit is well secured and in process of collection. Credit card loans and other personal loans are typically charged off no later than 180 days past due. Past due status is based on contractual terms of the loan. In all cases, loans are placed on nonaccrual or charged off at an earlier date, if collection of principal or interest is considered doubtful.
	All interest accrued but not collected for loans that are placed on nonaccrual or charged off is reversed against interest income. The interest on these loans is accounted for on the cash-basis or cost-recovery method, until qualifying for return to accrual. Loans are returned to accrual status when all the principal and interest amounts contractually due are brought current and future payments are reasonably assured.
Loan Pool Participations [Policy Text Block]	'
	The Company acquired its loan pool participations from the Former MidwestOne during the merger and continued in this business following the merger. However, in 2010, the Company made the decision to exit this line of business and is thus not purchasing new loan pool participations as existing pools pay down. The pools consist of loans to borrowers located throughout the United States.
	The Company carries its investment in the loan pools as a separate earning asset on the consolidated balance sheets. Principal or interest restructures, write-downs, or write-offs within the pools are not included in the Company’s disclosures for its loan portfolio, and foreclosed property from loans associated with the pools is not included in other real estate owned on the consolidated balance sheets. The loan pool participations are managed by a non-affiliate servicer operating in Omaha, Nebraska.
	Each pool has a different composition and different characteristics. The composition of a loan pool is generally determined by the seller based on its desire to maximize the price it receives for all loans among the various pools. Many of the pools consist of loans primarily secured by single-family, multi-family, and small commercial real estate. Some pools may consist of a large number of small consumer loans that are secured by other assets such as automobiles or mobile homes, while other pools may consist of small- to medium-balance commercial loans. Some may contain a mixture of such loans and other types of loans.
	The Company invested in pools consisting of both performing loans and past-due nonperforming loans. The price bid and paid for such a loan pool was determined based on the composition of the particular pool, the amounts the servicer believed could be collected on such a pool, and the risks associated with the collection of such amounts.
	Upon the acquisition of a participation interest in a loan pool, the Company assumed the risk of loss on a pro-rata basis. The extent of such risk is dependent on a number of factors, including the servicer’s ability to locate the debtors, the debtors’ financial condition, the possibility that a debtor may file for protection under applicable bankruptcy laws, the servicer’s ability to locate the collateral, if any, for the loan and to obtain possession of such collateral, the value of such collateral, and the length of time it takes to realize the ultimate recovery either through collection procedures or through a resale of the loans following a restructure.
	A cost “basis” was assigned to each individual loan acquired on a cents-per-dollar (discounted price) basis based on the servicer’s assessment of the recovery potential of each such loan. This methodology assigns a higher basis to performing loans with greater potential collectability and a lower basis to those loans identified as having little or no potential for collection.
	Loan pool participations are shown on the Company’s consolidated balance sheets as a separate asset category. The original carrying value of loan pool participations represents the discounted price paid by the Company to acquire its participation interests in various loan pools purchased by the servicer. The Company’s investment balance is reduced as the servicer collects principal payments on the loans and remits the proportionate share of such payments to the Company, as well as for charge-offs of amounts determined to be uncollectible.
	The loan pool participations acquired are accounted for in accordance with the provisions of ASC Topic 310.
	ASC Topic 310 provides guidance on the accounting for purchased loans that show evidence of deterioration of credit quality since origination and for which it is probable, at acquisition, that the purchaser will be unable to collect all contractually required payments receivable. ASC Topic 310 generally requires that the excess of the estimated cash flows expected to be collected on the loan over the initial investment be accreted over the estimated remaining life of loan.
	According to ASC Topic 310, in order to apply the interest method of recognition to these types of loans, there must be sufficient information to reasonably estimate the amount and timing of the cash flows expected to be collected. When that is not the case, the loan should be accounted for as a nonaccrual status applying the cash basis income recognition to the loan.
	The Company developed and implemented procedures to determine if accretion of the discount (“accretable yield”) on the purchased loans in a pool is required under ASC Topic 310. Given the impaired nature of the loan pools typically purchased, the individual loans were evaluated for ASC Topic 310 purposes by the end of a six-month window from the date of purchase. This provided time to assess the quality of the loans and assign basis to each loan within the pool. Purchased loans were evaluated individually with a determination made utilizing various criteria including: past-due status, late payments, legal status of the loan (not in foreclosure, judgment against the borrower, or referred to legal counsel), frequency of payments made, collateral adequacy and the borrower’s financial condition. If all the criteria were met, the Company utilized the accounting treatment for that individual loan required by ASC Topic 310 with the accretable yield difference between the expected cash flows and the purchased basis accreted into income on the level yield basis over the anticipated life of the loan. If any of the six criteria were not met, the loan is accounted for on the cash-basis of accounting.
	In the event that a prepayment is received on a loan accounted for under ASC Topic 310, the accretable yield is recomputed and the revised amount accreted over the estimated remaining life of the loan on the level yield basis. If a loan subject to accretable yield under ASC Topic 310 fails to make timely payments, it is subject to classification and an allowance for loss would be established.
	Collection expenses incurred by the servicer are netted against discount income. Discount income is added to interest income and reflected as one amount on the Company’s consolidated statements of operations.
	Interest income is only recognized when collected and actually remitted to the Company by the servicer for those loans subject to nonaccrual status in accordance with ASC Topic 310. Many of the pools that have been purchased by the servicer do not include purchased interest in the cost basis; thus, interest collected does not have a cost basis and represents profit. Interest income collected by the servicer is reflected in the Company’s consolidated financial statements as interest income and is included as part of interest and discount on loan pool participations.
Finance, Loan and Lease Receivables, Held-for-sale, Policy [Policy Text Block]	'
	Loans originated and intended for sale in the secondary market are carried at the lower of aggregate cost or estimated fair value, as determined by aggregate outstanding commitments from investors or current investor yield requirements. Net unrealized losses, if any, are recognized through a valuation allowance by charges to income.
	Mortgage loans held for sale are generally sold with the mortgage servicing rights retained. Gains or losses on sales of mortgage loans are recognized based on the difference between the selling price plus the value of servicing rights, less the carrying value of the related mortgage loans sold.
Loans and Leases Receivable, Allowance for Loan Losses Policy [Policy Text Block]	'
	The allowance for loan losses is established as losses estimated to have been incurred through a provision for loan losses charged to earnings. Loan losses are charged against the allowance when management believes the uncollectibility of a loan balance is confirmed. Subsequent recoveries, if any, are credited to the allowance.
	The allowance for loan losses is evaluated on a quarterly basis by management and is based upon management’s periodic review of the collectiblity of the loans in light of historical experience, the nature and volume of the loan portfolio, adverse situations that may affect the borrower’s ability to repay, estimated value of any underlying collateral and prevailing economic conditions. This evaluation is inherently subjective, as it requires estimates that are susceptible to significant revision as more information becomes available.
	The allowance consists of specific, general and unallocated components. The specific component relates to loans that are classified as doubtful, substandard or special mention. For such loans that are also classified as impaired as well as any loan (regardless of classification) meeting the definition of a troubled debt restructuring, an allowance is established when the discounted cash flows (or collateral value or observable market price) of the impaired loan are lower than the carrying value of that loan. The general component covers loans not classified as impaired and is based on historical loss experience adjusted for qualitative factors. An unallocated component is maintained to cover uncertainties that could affect management’s estimate of probable losses. The unallocated component of the allowance reflects that margin of imprecision inherent in the underlying assumptions used in the methodologies for estimating specific and general losses in the portfolio.
	A loan is considered impaired when, based on current information and events, it is probable that the Bank 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. Loans that experience insignificant payment delays and payment shortfalls generally are not classified as impaired. Management determines the significance of payment delays and payment shortfalls on a case-by-case basis, taking into consideration all of the circumstances surrounding the loan and the borrower, including the length of the delay, the reasons for the delay, the borrower’s prior payment record and the amount of the shortfall in relation to the principal and interest owed. Impairment is measured on a loan-by-loan basis by either the present value of expected future cash flows discounted at the loan’s effective interest rate, the loan’s observable market price or the fair value of the collateral, if the loan is collateral dependent.
	Large groups of smaller-balance, homogeneous loans are collectively evaluated for impairment. Accordingly, the Bank generally does not separately identify individual consumer and residential loans for impairment unless they meet the definition of a troubled debt restructure.
	The Allowance for Loan and Lease Losses - Bank Loans
	The Company requires the maintenance of an adequate allowance for loan and lease losses (“ALLL”) in order to cover estimated probable losses without eroding the Company's capital base. Calculations are done at each quarter end, or more frequently if warranted, to analyze the collectability of loans and to ensure the adequacy of the allowance. In line with FDIC directives, the ALLL calculation does not include consideration of loans held for sale or off-balance-sheet credit exposures (such as unfunded letters of credit). Determining the appropriate level for the ALLL relies on the informed judgment of management, and as such, is subject to inaccuracy. Given the inherently imprecise nature of calculating the necessary ALLL, the Company's policy permits an "unallocated" allowance between 15% above and 5% below the “indicated reserve.” These unallocated amounts are due to those overall factors impacting the ALLL that are not captured in detailed loan category calculations.
Transfers and Servicing of Financial Assets, Servicing of Financial Assets, Policy [Policy Text Block]	'
	Revenue from the origination and sale of loans in the secondary market is recognized upon the transfer of financial assets and accounted for as sales when control over the assets has been surrendered. The Bank also sells participation interests in some large loans originated, to non-affiliated entities. Control over transferred assets is deemed to be surrendered when: (1) the assets have been isolated from the Bank and its affiliates; (2) the transferee has the right to pledge or exchange the assets it received and no condition both constrains the transferee from taking advantage of its right to pledge or exchange and provides more than a trivial benefit to the transferor; and (3) the Bank and its affiliates do not maintain effective control over the transferred assets through an agreement to repurchase them before their maturity or the ability to unilaterally cause the holder to return specific assets.
Revenue Recognition, Sales of Services [Policy Text Block]	'
	Trust fees, deposit account service charges and other fees are recognized when payment is received for the services (cash basis), which generally occurs at the time the services are provided.
Off-Balance-Sheet Credit Exposure, Policy [Policy Text Block]	'
	In the ordinary course of business, the Bank has entered into commitments to extend credit, including commitments under credit card arrangements, commercial letters of credit and standby letters of credit. Such financial instruments are recorded when they are funded. The Bank records a liability to the extent losses on its commitments to lend are probable.
Property, Plant and Equipment, Policy [Policy Text Block]	'
	Land is carried at cost. Premises and equipment are stated at cost less accumulated depreciation. The estimated useful lives and primary method of depreciation for the principal items are as follows:
		Years
	Type of Assets	Minimum		Maximum	Depreciation Method
	Buildings and leasehold improvements	10	-	30	Straight-line
	Furniture and equipment	3	-	10	Straight-line
	Charges for maintenance and repairs are expensed as incurred. When assets are retired or disposed of the related cost and accumulated depreciation are removed from the respective accounts and the resulting gain or loss is recorded.
Loans and Leases Receivable, Real Estate Acquired Through Foreclosure, Policy [Policy Text Block]	'
	Other real estate owned acquired in satisfaction of loans is recorded at the lower of cost or fair value less estimated costs of disposal. When a property is acquired, the excess of the recorded investment in the property over its estimated fair value, less estimated costs of disposal, if any, is charged to the allowance for loan losses.
	Subsequent declines in the estimated fair value are recorded in a valuation allowance account. Additions to or reductions from valuation allowances, along with net operating results of the property, are included in other operating expenses.
Transfers and Servicing of Financial Assets, Servicing of Financial Assets, Policy [Policy Text Block]	'
	Mortgage servicing rights are recorded at fair value based on assumptions through a third-party valuation service. The valuation model incorporates assumptions that market participants would use in estimating future net servicing income, such as the servicing cost per loan, the discount rate, the escrow float rate, an inflation rate, ancillary income, prepayment speeds and default rates and losses.
Bank Owned Life Insurance [Policy Text Block]	'
	Bank-owned life insurance is carried at cash surrender value, net of surrender and other charges, with increases/decreases reflected as income/expense in the consolidated statements of operations.
Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block]	'
	Compensation expense for share based awards is recorded over the vesting period at the fair value of the award at the time of grant. The exercise price of options or fair value of nonvested shares granted under the Company’s incentive plans is equal to the fair market value of the underlying stock at the grant date. The Company assumes no projected forfeitures on its stock based compensation, since actual historical forfeiture rates on its stock-based incentive awards has been negligible.
Income Tax, Policy [Policy Text Block]	'
	The Company files a consolidated federal income tax return. Income tax expense is generally allocated as if the Company and its subsidiaries file separate income tax returns. For state purposes, the Bank files a franchise tax return and the remaining entities file a consolidated income tax return. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to temporary differences between the financial statement carrying amount of existing assets and liabilities and their respective tax bases. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect of a change in tax rates on deferred tax assets and liabilities is recognized in income in the period that includes the enactment date. Deferred tax assets are reduced by a valuation allowance when, in the opinion of management, it is more likely than not that some portion or all of the deferred tax assets will not be realized.
	There were no material unrecognized tax benefits or any interest or penalties on any unrecognized tax benefits as of December 31, 2013 and 2012.
	Any interest and penalties related to income taxes would be recorded as other operating expense in the consolidated statements of operations.
Treasury Stock [Text Block]	'
	On July 26, 2011, our Board of Directors authorized the implementation of a share repurchase program to repurchase up to $1.0 million of the Company’s outstanding shares of common stock through December 31, 2011. Pursuant to the program, we repurchased 45,039 shares of common stock during the third quarter of 2011 for an aggregate cost of $658,000. On October 18, 2011, our Board of Directors amended the Company’s share repurchase program by increasing the remaining amount of authorized repurchases to $5.0 million, and extending the expiration of the program to December 31, 2012. We repurchased 57,151 shares of common stock during the fourth quarter of 2011 for an aggregate cost of $840,000. In 2012, we repurchased a total of 104,518 shares of common stock at a cost of $1.8 million.
	On January 15, 2013, the Company's board of directors announced the renewal of the Company's share repurchase program, extending the expiration of the program to December 31, 2014 and increasing the remaining amount of authorized repurchases under the program to $5.0 million from the approximately $2.4 million of authorized repurchases that had previously remained. Pursuant to the program, the Company may continue to repurchase shares from time to time in the open market, and the method, timing and amounts of repurchase will be solely in the discretion of the Company's management. The repurchase program does not require the Company to acquire a specific number of shares. Therefore, the amount of shares repurchased pursuant to the program will depend on several factors, including market conditions, capital and liquidity requirements, and alternative uses for cash available. In 2013, we repurchased 40,713 shares of common stock at a cost of $1.0 million. As of December 31, 2013 the remaining amount available for share repurchase under the current program was $4.0 million.
Comprehensive Income, Policy [Policy Text Block]	'
	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 available-for-sale securities, are reported as a separate component of shareholders’ equity on the consolidated balance sheets, and are disclosed in the consolidated statements of comprehensive income.
	The components of accumulated other comprehensive income, included in shareholders’ equity, net of tax, are as follows:
			Year Ended December 31,
			2013			2012		2011
	(in thousands)
	Unrealized gains on securities available for sale, net of tax		$	1,049		$	11,050	$	9,880
	Unrealized loss on pension, net of tax		—			—		(3,742		)
	Accumulated other comprehensive income, net of tax		$	1,049		$	11,050	$	6,138

Loans_Receivable_and_the_Allow1

Loans Receivable and the Allowance for Loan Losses Loans Receivable and the Allowance for Loan Losses (Policies)	12 Months Ended
	Dec. 31, 2013
Loans Receivable and the Allowance for Loan Losses [Abstract]	'
Financing Receivable, Allowance for Credit Losses, Policy for Uncollectible Amounts	'
	Charge-off Policy
	The Company requires a loan to be charged-off as soon as it becomes apparent that some loss will be incurred, or when its collectability is sufficiently questionable that it no longer is considered a bankable asset. The primary considerations when determining if and how much of a loan should be charged-off are as follows: (1) the potential for future cash flows; (2) the value of any collateral; and (3) the strength of any co-makers or guarantors.
Loans and Leases Receivable, Allowance for Loan Losses Policy [Policy Text Block]	'
	The allowance for loan losses is established as losses estimated to have been incurred through a provision for loan losses charged to earnings. Loan losses are charged against the allowance when management believes the uncollectibility of a loan balance is confirmed. Subsequent recoveries, if any, are credited to the allowance.
	The allowance for loan losses is evaluated on a quarterly basis by management and is based upon management’s periodic review of the collectiblity of the loans in light of historical experience, the nature and volume of the loan portfolio, adverse situations that may affect the borrower’s ability to repay, estimated value of any underlying collateral and prevailing economic conditions. This evaluation is inherently subjective, as it requires estimates that are susceptible to significant revision as more information becomes available.
	The allowance consists of specific, general and unallocated components. The specific component relates to loans that are classified as doubtful, substandard or special mention. For such loans that are also classified as impaired as well as any loan (regardless of classification) meeting the definition of a troubled debt restructuring, an allowance is established when the discounted cash flows (or collateral value or observable market price) of the impaired loan are lower than the carrying value of that loan. The general component covers loans not classified as impaired and is based on historical loss experience adjusted for qualitative factors. An unallocated component is maintained to cover uncertainties that could affect management’s estimate of probable losses. The unallocated component of the allowance reflects that margin of imprecision inherent in the underlying assumptions used in the methodologies for estimating specific and general losses in the portfolio.
	A loan is considered impaired when, based on current information and events, it is probable that the Bank 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. Loans that experience insignificant payment delays and payment shortfalls generally are not classified as impaired. Management determines the significance of payment delays and payment shortfalls on a case-by-case basis, taking into consideration all of the circumstances surrounding the loan and the borrower, including the length of the delay, the reasons for the delay, the borrower’s prior payment record and the amount of the shortfall in relation to the principal and interest owed. Impairment is measured on a loan-by-loan basis by either the present value of expected future cash flows discounted at the loan’s effective interest rate, the loan’s observable market price or the fair value of the collateral, if the loan is collateral dependent.
	Large groups of smaller-balance, homogeneous loans are collectively evaluated for impairment. Accordingly, the Bank generally does not separately identify individual consumer and residential loans for impairment unless they meet the definition of a troubled debt restructure.
	The Allowance for Loan and Lease Losses - Bank Loans
	The Company requires the maintenance of an adequate allowance for loan and lease losses (“ALLL”) in order to cover estimated probable losses without eroding the Company's capital base. Calculations are done at each quarter end, or more frequently if warranted, to analyze the collectability of loans and to ensure the adequacy of the allowance. In line with FDIC directives, the ALLL calculation does not include consideration of loans held for sale or off-balance-sheet credit exposures (such as unfunded letters of credit). Determining the appropriate level for the ALLL relies on the informed judgment of management, and as such, is subject to inaccuracy. Given the inherently imprecise nature of calculating the necessary ALLL, the Company's policy permits an "unallocated" allowance between 15% above and 5% below the “indicated reserve.” These unallocated amounts are due to those overall factors impacting the ALLL that are not captured in detailed loan category calculations.

Nature_of_Business_and_Signifi3

Nature of Business and Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2013
Nature of Business and Significant Accounting Policies [Abstract]	'
Property, Plant and Equipment [Table Text Block]	'
	Land is carried at cost. Premises and equipment are stated at cost less accumulated depreciation. The estimated useful lives and primary method of depreciation for the principal items are as follows:
		Years
	Type of Assets	Minimum		Maximum	Depreciation Method
	Buildings and leasehold improvements	10	-	30	Straight-line
	Furniture and equipment	3	-	10	Straight-line
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]	'
	The components of accumulated other comprehensive income, included in shareholders’ equity, net of tax, are as follows:
			Year Ended December 31,
			2013			2012		2011
	(in thousands)
	Unrealized gains on securities available for sale, net of tax		$	1,049		$	11,050	$	9,880
	Unrealized loss on pension, net of tax		—			—		(3,742		)
	Accumulated other comprehensive income, net of tax		$	1,049		$	11,050	$	6,138

Investment_Securities_Tables

Investment Securities (Tables)	12 Months Ended
	Dec. 31, 2013
Investment Securities [Abstract]	'
Schedule of Available-for-sale Securities Reconciliation [Table Text Block]	'
	The amortized cost and fair value of investment securities available for sale, with gross unrealized gains and losses, are as follows:
						Gross				Gross
		Amortized				Unrealized				Unrealized				Estimated
		Cost				Gains				Losses				Fair Value
	(in thousands)
	December 31, 2013
	U.S. Government agencies and corporations	$	45,279			$	527			$	867			$	44,939
	State and political subdivisions	207,734				5,625				2,563				210,796
	Mortgage-backed securities	37,593				1,692				—				39,285
	Collateralized mortgage obligations	171,714				1,003				3,494				169,223
	Collateralized debt obligations	2,111				190				984				1,317
	Corporate debt securities	29,802				284				142				29,944
	Total debt securities	494,233				9,321				8,050				495,504
	Other equity securities	2,659				453				55				3,057
	Total investment securities	$	496,892			$	9,774			$	8,105			$	498,561
	December 31, 2012
	U.S. Government agencies and corporations	$	68,707			$	1,132			$	56			$	69,783
	State and political subdivisions	206,392				11,752				125				218,019
	Mortgage-backed securities	56,149				3,110				—				59,259
	Collateralized mortgage obligations	180,564				3,323				28				183,859
	Collateralized debt obligations	2,371				—				1,616				755
	Corporate debt securities	24,067				360				242				24,185
	Total debt securities	538,250				19,677				2,067				555,860
	Other equity securities	1,637				109				65				1,681
	Total investment securities	$	539,887			$	19,786			$	2,132			$	557,541
Held-to-maturity Securities [Table Text Block]	'
	The amortized cost and fair value of investment securities held-to-maturity, with gross unrealized gains and losses, are as follows:
						Gross				Gross
		Amortized				Unrealized				Unrealized				Estimated
		Cost				Gains				Losses				Fair Value
	(in thousands)
	December 31, 2013
	State and political subdivisions	$	19,888			$	—			$	1,326			$	18,562
	Mortgage-backed securities	28				3				—				31
	Collateralized mortgage obligations	9,447				—				834				8,613
	Corporate debt securities	3,262				—				277				2,985
	Total	$	32,625			$	3			$	2,437			$	30,191
	December 31, 2012
	State and political subdivisions	$	19,278			$	199			$	57			$	19,420
	Mortgage-backed securities	43				5				—				48
	Collateralized mortgage obligations	10,090				116				—				10,206
	Corporate debt securities	3,258				—				12				3,246
	Total	$	32,669			$	320			$	69			$	32,920
Schedule of Temporary Impairment Losses, Investments [Table Text Block]	'
	The following presents information pertaining to securities with gross unrealized losses as of December 31, 2013 and 2012, aggregated by investment category and length of time that individual securities have been in a continuous loss position:
					As of December 31, 2013
		Number			Less than 12 Months								12 Months or More					Total
		of
	Available for Sale	Securities			Estimated				Unrealized				Estimated			Unrealized		Estimated		Unrealized
					Fair				Losses				Fair			Losses		Fair		Losses
					Value								Value					Value
	(in thousands, except number of securities)
	U.S. Government agencies and corporations	3			$	21,977			$	867			$	—		$	—	$	21,977	$	867
	State and political subdivisions	171			54,153				2,331				1,799			232		55,952		2,563
	Collateralized mortgage obligations	18			110,142				3,164				5,047			330		115,189		3,494
	Collateralized debt obligations	3			—				—				934			984		934		984
	Corporate debt securities	3			7,430				93				1,561			49		8,991		142
	Other equity securities	1			945				55				—			—		945		55
	Total	199			$	194,647			$	6,510			$	9,341		$	1,595	$	203,988	$	8,105
					As of December 31, 2012
		Number			Less than 12 Months								12 Months or More					Total
		of
		Securities			Estimated				Unrealized				Estimated			Unrealized		Estimated		Unrealized
					Fair				Losses				Fair			Losses		Fair		Losses
					Value								Value					Value
	(in thousands, except number of securities)
	U.S. Government agencies and corporations	2			$	15,359			$	56			$	—		$	—	$	15,359	$	56
	State and political subdivisions	27			7,221				125				—			—		7,221		125
	Collateralized mortgage obligations	2			10,919				28				—			—		10,919		28
	Collateralized debt obligations	5			—				—				755			1,616		755		1,616
	Corporate debt securities	4			14,672				242				—			—		14,672		242
	Other equity securities	1			754				65				—			—		754		65
	Total	41			$	48,925			$	516			$	755		$	1,616	$	49,680	$	2,132
					As of December 31, 2013
		Number			Less than 12 Months								12 Months or More					Total
		of
	Held to Maturity	Securities			Estimated				Unrealized				Estimated			Unrealized		Estimated		Unrealized
					Fair				Losses				Fair			Losses		Fair		Losses
					Value								Value					Value
	(in thousands, except number of securities)
	State and political subdivisions	30			$	17,420			$	1,195			$	1,142		$	131	$	18,562	$	1,326
	Collateralized mortgage obligations	1			8,613				834				—			—		8,613		834
	Corporate debt securities	2			2,984				277				—			—		2,984		277
	Total	33			$	29,017			$	2,306			$	1,142		$	131	$	30,159	$	2,437
					As of December 31, 2012
		Number			Less than 12 Months								12 Months or More					Total
		of
		Securities			Estimated				Unrealized				Estimated			Unrealized		Estimated		Unrealized
					Fair				Losses				Fair			Losses		Fair		Losses
					Value								Value					Value
	(in thousands, except number of securities)
	State and political subdivisions	11			$	3,672			$	57			$	—		$	—	$	3,672	$	57
	Corporate debt securities	1			2,371				12				—			—		2,371		12
	Total	12			$	6,043			$	69			$	—		$	—	$	6,043	$	69
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Table Text Block]	'
	The following table provides a roll forward of credit losses on fixed maturity securities recognized in net income:
		Year Ended December 31,
		2013				2012
	(in thousands)
	Beginning balance	$	7,379			$	7,034
	Additional credit losses:
	Securities with no previous other than temporary impairment	—				—
	Securities with previous other than temporary impairments	—				345
	Reductions to credit losses:
	Securities with previous other than temporary impairments, due to liquidation	(740		)		—
	Ending balance	$	6,639			$	7,379
Investments Classified by Contractual Maturity Date [Table Text Block]	'
	The contractual maturity distribution of investment debt securities at December 31, 2013, is summarized as follows:
		Available For Sale								Held to Maturity
		Amortized				Fair Value				Amortized				Fair Value
		Cost								Cost
	(in thousands)
	Due in one year or less	$	14,753			$	14,959			$	185			$	185
	Due after one year through five years	105,845				108,406				2,574				2,522
	Due after five years through ten years	103,847				105,127				7,780				7,517
	Due after ten years	60,481				58,504				12,611				11,323
	Debt securities without a single maturity date	209,307				208,508				9,475				8,644
	Total	$	494,233			$	495,504			$	32,625			$	30,191
Schedule of Realized Gain (Loss) [Table Text Block]	'
	Realized gains and losses on sales are determined on the basis of specific identification of investments based on the trade date. Realized gains (losses) on investments, including impairment losses for the years ended December 31, 2013, 2012 and 2011, were as follows:
		Year Ended December 31,
		2013				2012				2011
	(in thousands)
	Available for sale fixed maturity securities:
	Gross realized gains	$	144			$	424			$	490
	Gross realized losses	(79		)		—				—
	Other-than-temporary impairment	—				(345		)		(9		)
		65				79				481
	Equity securities:
	Gross realized gains	—				381				—
	Gross realized losses	—				—				—
	Other-than-temporary impairment	—				—				—
		—				381				—
	Total net realized gains and losses	$	65			$	460			$	481

Loans_Receivable_and_the_Allow2

Loans Receivable and the Allowance for Loan Losses (Tables)	12 Months Ended
	Dec. 31, 2013
Loans Receivable and the Allowance for Loan Losses [Abstract]	'
Certain Loans Acquired With Deteriorated Qredit Quality [Table Text Block]	'
	e outstanding balances and carrying values as of December 31, 2013 and 2012, of the loans purchased that met the level-yield income recognition criteria under ASC Topic 310 are as follows:
		As of December 31,
		2013				2012
	(in thousands)
	Agricultural	$	—			$	—
	Commercial	502				526
	Real Estate:
	1-4 family residences	229				341
	Agricultural	—				51
	Land development	—				—
	Multifamily residences	—				363
	Commercial	2,320				4,025
	Total real estate	2,549				4,780
	Total	$	3,051			$	5,306
	Allowance	(48		)		(80		)
	Carrying amount, net of allowance	$	3,003			$	5,226
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]	'
	The composition of allowance for loan losses, loans, and loan pool participations by portfolio segment, as of and for the years ended December 31, 2013 and 2012, were as follows:
		Allowance for Loan Losses and Recorded Investment in Loan Receivables
		For the Years Ended December 31, 2013 and 2012
	(in thousands)	Agricultural				Commercial and Industrial				Commercial Real Estate			Residential Real Estate				Consumer			Unallocated				Total
	2013
	Allowance for loan losses:
	Individually evaluated for impairment	$	125			$	559			$	513		$	220			$	6		$	—			$	1,423
	Collectively evaluated for impairment	1,233				4,421				4,781			2,965				269			1,087				14,756
	Total	$	1,358			$	4,980			$	5,294		$	3,185			$	275		$	1,087			$	16,179
	Loans acquired with deteriorated credit quality (loan pool participations)	$	3			$	64			$	627		$	88			$	6		$	1,346			$	2,134
	Loans receivable
	Individually evaluated for impairment	$	3,146			$	3,521			$	5,079		$	1,664			$	50		$	—			$	13,460
	Collectively evaluated for impairment	94,021				260,130				429,345			272,462				18,994			—				1,074,952
	Total	$	97,167			$	263,651			$	434,424		$	274,126			$	19,044		$	—			$	1,088,412
	Loans acquired with deteriorated credit quality (loan pool participations)*	$	49			$	1,302			$	18,168		$	3,823			$	18		$	4,307			$	27,667
	(in thousands)	Agricultural				Commercial and Industrial				Commercial Real Estate			Residential Real Estate				Consumer			Unallocated				Total
	2012
	Allowance for loan losses:
	Individually evaluated for impairment	$	159			$	295			$	293		$	136			$	6		$	—			$	889
	Collectively evaluated for impairment	867				4,304				5,474			2,871				350			1,202				15,068
	Total	$	1,026			$	4,599			$	5,767		$	3,007			$	356		$	1,202			$	15,957
	Loans acquired with deteriorated credit quality (loan pool participations)	$	4			$	77			$	673		$	240			$	15		$	1,125			$	2,134
	Loans receivable
	Individually evaluated for impairment	$	3,323			$	1,806			$	5,342		$	886			$	37		$	—			$	11,394
	Collectively evaluated for impairment	81,403				236,810				434,642			251,990				19,045			—				1,023,890
	Total	$	84,726			$	238,616			$	439,984		$	252,876			$	19,082		$	—			$	1,035,284
	Loans acquired with deteriorated credit quality (loan pool participations)*	$	76			$	2,379			$	24,346		$	4,788			$	67		$	6,128			$	37,784
	* The amount shown as “Unallocated” represents the carrying value of other real estate owned within the loan pool participation portfolio total.
Allowance for Credit Losses on Financing Receivables [Table Text Block]	'
	The changes in the allowance for loan losses by portfolio segment, as of and for the years ended December 31, 2013, 2012, and 2011 were as follows:
		Allowance for Loan Loss Activity
		For the Years Ended December 31, 2013, 2012, and 2011
	(in thousands)	Agricultural				Commercial and Industrial				Commercial Real Estate			Residential Real Estate				Consumer			Unallocated				Total
	2013
	Beginning balance	$	1,026			$	4,599			$	5,767		$	3,007			$	356		$	1,202			$	15,957
	Charge-offs	(39		)		(790		)		(545		)	(286		)		(147		)	—				(1,807		)
	Recoveries	36				70				479			67				27			—				679
	Provision	335				1,101				(407		)	397				39			(115		)		1,350
	Ending balance	$	1,358			$	4,980			$	5,294		$	3,185			$	275		$	1,087			$	16,179
	2012
	Beginning balance	$	1,209			$	5,380			$	5,171		$	3,501			$	167		$	248			$	15,676
	Charge-offs	—				(2,345		)		(129		)	(537		)		(90		)	—				(3,101		)
	Recoveries	507				423				24			31				18			—				1,003
	Provision	(690		)		1,141				701			12				261			954				2,379
	Ending balance	$	1,026			$	4,599			$	5,767		$	3,007			$	356		$	1,202			$	15,957
	2011
	Beginning balance	$	827			$	4,540			$	5,255		$	2,776			$	323		$	1,446			$	15,167
	Charge-offs	(425		)		(1,440		)		(1,280		)	(503		)		(153		)	—				(3,801		)
	Recoveries	67				573				144			33				143			—				960
	Provision	740				1,707				1,052			1,195				(146		)	(1,198		)		3,350
	Ending balance	$	1,209			$	5,380			$	5,171		$	3,501			$	167		$	248			$	15,676
Troubled Debt Restructurings on Financing Receivables [Table Text Block]	'
	The following tables set forth information on the Company's TDRs(1) by class of financing receivable occurring during the stated periods:
		For the Year Ended December 31,
		2013										2012								2011
		Number of Contracts		Pre-Modification Outstanding Recorded Investment				Post-Modification Outstanding Recorded Investment				Number of Contracts	Pre-Modification Outstanding Recorded Investment				Post-Modification Outstanding Recorded Investment			Number of Contracts		Pre-Modification Outstanding Recorded Investment				Post-Modification Outstanding Recorded Investment
	(dollars in thousands)
	Troubled Debt Restructurings:
	Commercial and industrial
	Interest rate reduction	0		$	—			$	—			0	$	—			$	—		1		$	53			$	53
	Amortization or maturity date change	10		1,546				1,546				1	551				551			0		—				—
	Commercial real estate:
	Construction and development
	Interest rate reduction	0		—				—				0	—				—			1		607				80
	Farmland
	Interest rate reduction	0		—				—				2	2,475				2,388			0		—				—
	Commercial real estate-other
	Interest rate reduction	0		—				—				0	—				—			6		2,471				2,471
	Amortization or maturity date change	2		165				136				0	—				—			0		—				—
	Residential real estate:
	One- to four- family first liens
	Interest rate reduction	2		164				169				0	—				—			1		194				198
	Amortization or maturity date change	1		66				69				0	—				—			0		—				—
	One- to four- family junior liens
	Interest rate reduction	1		8				13				1	135				138			0		—				—
	Total	16		$	1,949			$	1,933			4	$	3,161			$	3,077		9		$	3,325			$	2,802
	(1) - TDRs may include multiple concessions and the disclosure classifications are based on the primary concession provided to the borrower.
	Loans by class of financing receivable modified as TDRs(1) within the previous 12 months and for which there was a payment default during the stated periods were:
		For the Year Ended December 31,
		2013						2012					2011
		Number of Contracts		Recorded Investment				Number of Contracts		Recorded Investment			Number of Contracts		Recorded Investment
	(dollars in thousands)
	Troubled Debt Restructurings That Subsequently Defaulted:
	Commercial and industrial
	Amortization or maturity date change	0		—				1		547			0		$	—
	Commercial real estate:
	Commercial real estate-other
	Interest rate reduction	0		—				0		—			5		1,388
	Amortization or maturity date change	1		69				0		—			0		—
	Residential real estate:
	One- to four- family first liens
	Interest rate reduction	1		111				0		—			0		—
	Total	2		$	180			1		$	547		5		$	1,388
	(1) - TDRs may include multiple concessions and the disclosure classifications are based on the primary concession provided to the borrower.
Financing Receivable Credit Quality Indicators [Table Text Block]	'
	e following table sets forth the composition of the Company’s loans and loan pool participations by internally assigned credit quality indicators at December 31, 2013 and 2012:
		Pass				Special Mention/Watch				Substandard			Doubtful				Loss			Total
	(in thousands)
	2013
	Agricultural	$	93,187			$	460			$	3,520		$	—			$	—		$	97,167
	Commercial and industrial	239,485				11,097				11,786			—				—			262,368
	Credit cards	1,010				1				17			—				—			1,028
	Overdrafts	326				123				88			—				—			537
	Commercial real estate:
	Construction & development	56,112				14,984				1,493			—				—			72,589
	Farmland	80,044				3,091				2,340			—				—			85,475
	Multifamily	53,315				1,732				396			—				—			55,443
	Commercial real estate-other	205,914				12,994				2,009			—				—			220,917
	Total commercial real estate	395,385				32,801				6,238			—				—			434,424
	Residential real estate:
	One- to four- family first liens	213,815				3,994				2,859			—				—			220,668
	One- to four- family junior liens	53,225				38				195			—				—			53,458
	Total residential real estate	267,040				4,032				3,054			—				—			274,126
	Consumer	18,643				57				62			—				—			18,762
	Total	$	1,015,076			$	48,571			$	24,765		$	—			$	—		$	1,088,412
	Loans acquired with deteriorated credit quality (loan pool participations)	$	13,569			$	—			$	14,093		$	—			$	5		$	27,667
	2012
	Agricultural	$	80,657			$	579			$	3,490		$	—			$	—		$	84,726
	Commercial and industrial	211,344				12,473				13,376			—				—			237,193
	Credit cards	967				4				30			—				—			1,001
	Overdrafts	452				181				126			—				—			759
	Commercial real estate:
	Construction & development	72,916				9,493				4,385			—				—			86,794
	Farmland	76,023				2,684				2,356			—				—			81,063
	Multifamily	46,272				1,486				—			—				—			47,758
	Commercial real estate-other	209,143				13,745				1,481			—				—			224,369
	Total commercial real estate	404,354				27,408				8,222			—				—			439,984
	Residential real estate:
	One- to four- family first liens	191,712				4,478				1,552			—				—			197,742
	One- to four- family junior liens	54,606				229				299			—				—			55,134
	Total residential real estate	246,318				4,707				1,851			—				—			252,876
	Consumer	18,604				70				71			—				—			18,745
	Total	$	962,696			$	45,422			$	27,166		$	—			$	—		$	1,035,284
	Loans acquired with deteriorated credit quality (loan pool participations)	$	21,251			$	—			$	16,518		$	—			$	15		$	37,784
Impaired Financing Receivables [Table Text Block]	'
	The following tables set forth the amounts and categories of the Company’s impaired loans as of December 31, 2013 and 2012:
		As of December 31,
		2013											2012
		Recorded Investment				Unpaid Principal Balance				Related Allowance			Recorded Investment				Unpaid Principal Balance			Related Allowance
	(in thousands)
	With no related allowance recorded:
	Agricultural	$	1,475			$	1,975			$	—		$	1,600			$	2,100		$	—
	Commercial and industrial	1,919				2,020				—			775				1,524			—
	Credit cards	—				—				—			—				—			—
	Overdrafts	—				—				—			—				—			—
	Commercial real estate:
	Construction & development	132				601				—			149				299			—
	Farmland	93				107				—			75				88			—
	Multifamily	—				—				—			—				—			—
	Commercial real estate-other	587				612				—			1,722				1,887			—
	Total commercial real estate	812				1,320				—			1,946				2,274			—
	Residential real estate:
	One- to four- family first liens	622				741				—			136				203			—
	One- to four- family junior liens	50				50				—			41				41			—
	Total residential real estate	672				791				—			177				244			—
	Consumer	10				26				—			14				30			—
	Total	$	4,888			$	6,132			$	—		$	4,512			$	6,172		$	—
	With an allowance recorded:
	Agricultural	$	1,671			$	1,671			$	125		$	1,723			$	1,723		$	159
	Commercial and industrial	1,602				1,657				559			1,031				1,031			295
	Credit cards	—				—				—			—				—			—
	Overdrafts	—				—				—			—				—			—
	Commercial real estate:
	Construction & development	7				7				3			525				525			105
	Farmland	2,311				2,461				219			2,316				2,466			47
	Multifamily	—				—				—			—				—			—
	Commercial real estate-other	1,949				2,164				291			555				555			141
	Total commercial real estate	4,267				4,632				513			3,396				3,546			293
	Residential real estate:
	One- to four- family first liens	902				902				170			642				642			89
	One- to four- family junior liens	90				90				50			67				67			47
	Total residential real estate	992				992				220			709				709			136
	Consumer	40				40				6			23				23			6
	Total	$	8,572			$	8,992			$	1,423		$	6,882			$	7,032		$	889
	Total:
	Agricultural	$	3,146			$	3,646			$	125		$	3,323			$	3,823		$	159
	Commercial and industrial	3,521				3,677				559			1,806				2,555			295
	Credit cards	—				—				—			—				—			—
	Overdrafts	—				—				—			—				—			—
	Commercial real estate:
	Construction & development	139				608				3			674				824			105
	Farmland	2,404				2,568				219			2,391				2,554			47
	Multifamily	—				—				—			—				—			—
	Commercial real estate-other	2,536				2,776				291			2,277				2,442			141
	Total commercial real estate	5,079				5,952				513			5,342				5,820			293
	Residential real estate:
	One- to four- family first liens	1,524				1,643				170			778				845			89
	One- to four- family junior liens	140				140				50			108				108			47
	Total residential real estate	1,664				1,783				220			886				953			136
	Consumer	50				66				6			37				53			6
	Total	$	13,460			$	15,124			$	1,423		$	11,394			$	13,204		$	889
	The following table sets forth the average recorded investment and interest income recognized for each category of the Company’s impaired loans during the stated periods:
		For the Year Ended December 31,
		2013								2012							2011
		Average Recorded Investment				Interest Income Recognized				Average Recorded Investment			Interest Income Recognized				Average Recorded Investment			Interest Income Recognized
	(in thousands)
	With no related allowance recorded:
	Agricultural	$	1,128			$	114			$	1,600		$	60			$	2,095		$	54
Commercial and industrial	2,025				76				965			52				1,069			17
Credit cards	—				—				—			—				—			—
Overdrafts	—				—				—			—				—			—
Commercial real estate:
Construction & development	149				21				316			—				690			(15		)
Farmland	101				8				83			8				3,765			149
Multifamily	—				—				—			—				—			—
Commercial real estate-other	593				25				1,770			72				2,263			69
Total commercial real estate	843				54				2,169			80				6,718			203
Residential real estate:
One- to four- family first liens	669				14				143			4				1,278			17
One- to four- family junior liens	50				1				43			3				70			2
Total residential real estate	719				15				186			7				1,348			19
Consumer	12				—				16			—				15			2
Total	$	4,727			$	259			$	4,936		$	199			$	11,245		$	295
With an allowance recorded:
Agricultural	$	1,681			$	51			$	1,723		$	50			$	1,866		$	58
Commercial and industrial	1,697				75				1,044			36				1,392			57
Credit cards	—				—				—			—				—			—
Overdrafts	—				—				—			—				—			—
Commercial real estate:
Construction & development	7				—				526			30				776			26
Farmland	2,315				110				2,504			114				329			—
Multifamily	—				—				—			—				249			18
Commercial real estate-other	1,921				55				559			18				1,173			64
Total commercial real estate	4,243				165				3,589			162				2,527			108
Residential real estate:
One- to four- family first liens	909				38				645			33				1,256			32
One- to four- family junior liens	92				1				68			2				92			5
Total residential real estate	1,001				39				713			35				1,348			37
Consumer	41				2				24			2				34			3
Total	$	8,663			$	332			$	7,093		$	285			$	7,167		$	263
Total:
Agricultural	$	2,809			$	165			$	3,323		$	110			$	3,961		$	112
Commercial and industrial	3,722				151				2,009			88				2,461			74
Credit cards	—				—				—			—				—			—
Overdrafts	—				—				—			—				—			—
Commercial real estate:
Construction & development	156				21				842			30				1,466			11
Farmland	2,416				118				2,587			122				4,094			149
Multifamily	—				—				—			—				249			18
Commercial real estate-other	2,514				80				2,329			90				3,436			133
Total commercial real estate	5,086				219				5,758			242				9,245			311
Residential real estate:
One- to four- family first liens	1,578				52				788			37				2,534			49
One- to four- family junior liens	142				2				111			5				162			7
Total residential real estate	1,720				54				899			42				2,696			56
Consumer	53				2				40			2				49			5
Total	$	13,390			$	591			$	12,029		$	484			$	18,412		$	558
Past Due Loan Receivables [Table Text Block]	'
	e following table sets forth the composition and past due status of the Company’s loans at December 31, 2013 and 2012:
		30 - 59 Days Past Due				60 - 89 Days Past Due				90 Days or More Past Due			Total Past Due				Current			Total Loans Receivable				Recorded Investment > 90 Days Past Due and Accruing
	(in thousands)
	2013
	Agricultural	$	65			$	23			$	52		$	140			$	97,027		$	97,167			$	—
	Commercial and industrial	610				876				960			2,446				259,922			262,368				213
	Credit cards	—				1				17			18				1,010			1,028				17
	Overdrafts	40				1				48			89				448			537				—
	Commercial real estate:
	Construction & development	84				—				56			140				72,449			72,589				—
	Farmland	—				—				—			—				85,475			85,475				—
	Multifamily	—				—				395			395				55,048			55,443				395
	Commercial real estate-other	604				190				1,740			2,534				218,383			220,917				164
	Total commercial real estate	688				190				2,191			3,069				431,355			434,424				559
	Residential real estate:
	One- to four- family first liens	1,891				869				984			3,744				216,924			220,668				540
	One- to four- family junior liens	316				38				175			529				52,929			53,458				49
	Total residential real estate	2,207				907				1,159			4,273				269,853			274,126				589
	Consumer	17				62				36			115				18,647			18,762				7
	Total	$	3,627			$	2,060			$	4,463		$	10,150			$	1,078,262		$	1,088,412			$	1,385
	2012
	Agricultural	$	96			$	—			$	—		$	96			$	84,630		$	84,726			$	—
	Commercial and industrial	289				70				85			444				236,749			237,193				85
	Credit cards	4				—				30			34				967			1,001				30
	Overdrafts	82				6				39			127				632			759				—
	Commercial real estate:
	Construction & development	448				—				—			448				86,346			86,794				—
	Farmland	—				—				—			—				81,063			81,063				—
	Multifamily	—				—				—			—				47,758			47,758				—
	Commercial real estate-other	892				295				67			1,254				223,115			224,369				67
	Total commercial real estate	1,340				295				67			1,702				438,282			439,984				67
	Residential real estate:
	One- to four- family first liens	2,210				1,185				311			3,706				194,036			197,742				311
	One- to four- family junior liens	233				189				75			497				54,637			55,134				75
	Total residential real estate	2,443				1,374				386			4,203				248,673			252,876				386
	Consumer	70				72				4			146				18,599			18,745				4
	Total	$	4,324			$	1,817			$	611		$	6,752			$	1,028,532		$	1,035,284			$	572
Schedule of Loans, Non Accrual Status [Table Text Block]	'
	e following table sets forth the composition of the Company’s recorded investment in loans on nonaccrual status as of December 31, 2013 and 2012:
		As of December 31,
		2013				2012
	(in thousands)
	Agricultural	$	52			$	64
	Commercial and industrial	746				757
	Credit cards	—				—
	Overdrafts	—				—
	Commercial real estate:
	Construction & development	139				149
	Farmland	29				33
	Multifamily	—				—
	Commercial real estate-other	1,576				1,128
	Total commercial real estate	1,744				1,310
	Residential real estate:
	One- to four- family first liens	543				550
	One- to four- family junior liens	126				223
	Total residential real estate	669				773
	Consumer	29				34
	Total	$	3,240			$	2,938
Certain Loans Acquired With Deteriorated Qredit Quality [Table Text Block]	'
	summary of the changes in the carrying value of loan pool participations for the years ended December 31, 2013 and 2012, is as follows:
		For the Year Ended December 31,
		2013				2012
	(in thousands)
	Balance at beginning of year	$	35,650			$	50,052
	Principal payments	(8,687		)		(13,115		)
	Net charge-offs	(1,430		)		(1,287		)
	Balance at end of year	$	25,533			$	35,650
	Total face value at end of year	$	80,902			$	105,299
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Table Text Block]	'
	anges in accretable yield on the loans that met the level-yield income recognition criteria under ASC Topic 310 were as follows:
		Accretable Yield December 31,
		2013				2012
	(in thousands)
	Balance at beginning of year	$	2,627			$	3,322
	Additions	—				—
	Accretions	(383		)		(641		)
	Reclassifications to nonaccretable differences	—				(54		)
	Balance at end of year	$	2,244			$	2,627
	Cash flows expected to be collected at acquisition	$	8,128			$	11,507
	Basis in acquired loans at acquisition	$	4,638			$	7,046

Premises_and_Equipment_Tables

Premises and Equipment (Tables)	12 Months Ended
	Dec. 31, 2013
Premises and Equipment [Abstract]	'
Property, Plant and Equipment [Table Text Block]	'
	Premises and equipment as of December 31, 2013 and 2012 were as follows:
		As of December 31,
		2013		2012
	(in thousands)
	Land	$	4,836	$	4,841
	Buildings and leasehold improvements	30,287		30,182
	Furniture and equipment	17,506		14,399
	Premises and equipment	52,629		49,422
	Accumulated depreciation and amortization	24,947		23,813
	Premises and equipment, net	$	27,682	$	25,609

Intangible_Assets_Tables

Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2013
Intangible Assets [Abstract]	'
Schedule of Intangible Assets and Goodwill [Table Text Block]	'
	The following table summarizes the amounts and carrying values of intangible assets as of December 31, 2013 and 2012:
		Weighted		Gross						Unamortized
		Average		Carrying			Accumulated			Intangible
		Useful Life		Amount			Amortization			Assets
	(dollars in thousands)	(years)
	December 31, 2013
	Other intangible assets:
	Insurance agency intangible	8		$	1,320		$	850		$	470
	Core deposit premium	5		5,433			4,322			1,111
	Trade name intangible	—		7,040			—			7,040
	Customer list intangible	10		330			145			185
	Total			$	14,123		$	5,317		$	8,806
	December 31, 2012
	Other intangible assets:
	Insurance agency intangible	9		$	1,320		$	728		$	592
	Core deposit premium	6		5,433			3,803			1,630
	Trade name intangible	—		7,040			—			7,040
	Customer list intangible	11		330			123			207
	Total			$	14,123		$	4,654		$	9,469
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]	'
	The following table summarizes future amortization expense of intangible assets:
		Insurance			Core			Customer
		Agency			Deposit			List
		Intangible			Premium			Intangible			Totals
	(in thousands)
	Year ending December 31,
	2014	$	105		$	420		$	22		$	547
	2015	89			321			21			431
	2016	72			222			20			314
	2017	55			123			19			197
	2018	38			25			18			81
	Thereafter	111			—			85			196
	Total	$	470		$	1,111		$	185		$	1,766

Other_Assets_Tables

Other Assets (Tables)	12 Months Ended
	Dec. 31, 2013
Other Assets [Abstract]	'
Schedule of Other Assets [Table Text Block]	'
	The components of the Company’s other assets as of December 31, 2013 and 2012 were as follows:
		As of December 31,
		2013		2012
	(in thousands)
	Federal Home Loan Bank Stock	$	9,226	$	11,087
	Prepaid expenses	1,030		5,211
	Mortgage servicing rights	2,298		1,484
	Accounts receivable & other miscellaneous assets	2,006		2,600
		$	14,560	$	20,382

Time_Deposits_Tables

Time Deposits (Tables)	12 Months Ended
	Dec. 31, 2013
Time Deposits [Abstract]	'
Contractual Obligation, Fiscal Year Maturity Schedule [Table Text Block]	'
	At December 31, 2013, the scheduled maturities of certificates of deposits were as follows:
	(in thousands)
	2014	$	306,354
	2015	95,913
	2016	38,237
	2017	18,967
	2018	5,850
	Thereafter	30
	Total	$	465,351

Federal_Home_Loan_Bank_Borrowi1

Federal Home Loan Bank Borrowings and Long-Term Debt (Tables)	12 Months Ended
	Dec. 31, 2013
Federal Home Loan Bank Borrowings and Long-Term Debt [Abstract]	'
Schedule of Federal Home Loan Bank, Advances, by Branch of FHLB Bank [Table Text Block]	'
	As of December 31, 2013 and 2012, Federal Home Loan Bank borrowings were as follows:
		Rates					Amount
		Minimum			Maximum		2013		2012
	(in thousands)
	Due in 2013	0.84	%	to	5.97	%	$	—	$	35,300
	Due in 2013(1)	2.63	%	to	2.63	%	—		5,000
	Due in 2014	1.25	%	to	3.4	%	39,900		39,820
	Due in 2015	2.06	%	to	3	%	20,000		20,000
	Due in 2016	1.13	%	to	2.46	%	17,000		10,000
	Due in 2017	1.09	%	to	2.78	%	10,000		5,000
	Due in 2018	1.3	%	to	1.3	%	5,000		5,000
	Thereafter	1.42	%	to	1.75	%	15,000		—
	Total						$	106,900	$	120,120
	(1) Callable quarterly.

Income_Taxes_Tables

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2013
Income Taxes [Abstract]	'
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]	'
	Income taxes for the years ended December 31, 2013, 2012 and 2011 are summarized as follows:
		December 31,
		2013			2012			2011
	(in thousands)
	Current:
	Federal	$	6,841		$	4,165		$	4,147
	State	1,259			1,103			851
	Deferred	(1,454		)	(54		)	(389		)
	Total income tax provision	$	6,646		$	5,214		$	4,609
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]	'
	The income tax provisions for the years ended December 31, 2013, 2012 and 2011 were less than the amounts computed by applying the maximum effective federal income tax rate of 35% for the year ended December 31, 2013, and 34% for the years of 2012 and 2011, to the income before income taxes because of the following items:
		2013			2012			2011
	(in thousands)
	Expected provision	$	8,839		$	7,394		$	6,093
	Tax-exempt interest	(2,345		)	(2,213		)	(1,722		)
	Bank-owned life insurance	(322		)	(323		)	(322		)
	State income taxes, net of federal income tax benefit	776			723			604
	Other	(302		)	(367		)	(44		)
	Total income tax provision	$	6,646		$	5,214		$	4,609
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]	'
	Net deferred tax assets as of December 31, 2013 and 2012 consisted of the following components:
		December 31,
		2013			2012
	(in thousands)
	Deferred income tax assets:
	Allowance for loan losses	$	7,753		$	6,688
	Deferred compensation	1,076			1,123
	Net operating losses	3,089			2,894
	Impairment losses on securities	2,613			2,812
	Other real estate owned	767			268
	Nonaccrual interest	434			387
	Other	931			781
	Gross deferred tax assets	16,663			14,953
	Deferred income tax liabilities:
	Premises and equipment depreciation and amortization	2,012			2,174
	Federal Home Loan Bank stock	132			129
	Purchase accounting adjustments	895			1,115
	Mortgage servicing rights	871			548
	Prepaid expenses	105			190
	Unrealized gains on investment securities	620			6,584
	Deferred loan fees	238			194
	Other	315			163
	Gross deferred tax liabilities	5,188			11,097
	Net deferred income tax asset	11,475			3,856
	Valuation allowance	3,281			3,080
	Net deferred tax asset	$	8,194		$	776

Stock_Compensation_Plans_Table

Stock Compensation Plans (Tables)	12 Months Ended
	Dec. 31, 2013
Stock Compensation Plans [Abstract]	'
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]	'
	The following is a summary of stock option activity for the year ended December 31, 2013:
						Weighted-
						Average
				Weighted-		Remaining	Aggregate
				Average		Contractual	Intrinsic
				Exercise		Term in	Value
		Shares		Price		Years	$0
	Outstanding at December 31, 2012	107,476		$	17.55
	Granted	—		—
	Exercised	(56,314	)	19
	Forfeited	—		—
	Expired	(3,572	)	20.03
	Outstanding at December 31, 2013	47,590		$	15.66	3.34	$	549
	Exercisable at December 31, 2013	47,590		$	15.66	3.34	$	549
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block]	'
	The following is a summary of nonvested restricted stock unit activity for the year ended December 31, 2013:
				Weighted-
				Average
				Grant-Date
		Shares		Fair Value
	Nonvested at December 31, 2012	52,112		$	8.17
	Granted	21,700		23.1
	Vested	(19,585	)	12.84
	Forfeited	(1,830	)	20.1
	Nonvested at December 31, 2013	52,397		$	18.24

Earnings_per_Common_Share_Tabl

Earnings per Common Share (Tables)	12 Months Ended
	Dec. 31, 2013
Earnings per Common Share [Abstract]	'
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]	'
	Following are the calculations for basic and diluted earnings per common share:
		Year Ended December 31,
		2013		2012		2011
	(dollars in thousands, except per share amounts)
	Basic earnings per common share computation
	Numerator:
	Net income	$	18,607	$	16,534	$	13,311
	Preferred stock dividends and discount accretion	—		—		(645		)
	Net income available to common shareholders	$	18,607	$	16,534	$	12,666
	Denominator:
	Weighted average shares outstanding	8,477,904		8,485,008		8,604,872
	Basic earnings per common share	$	2.19	$	1.95	$	1.47
	Diluted earnings per common share computation
	Numerator:
	Net income	$	18,607	$	16,534	$	13,311
	Preferred stock dividends and discount accretion	—		—		(645		)
	Net income available to common shareholders	$	18,607	$	16,534	$	12,666
	Denominator:
	Weighted average shares outstanding, included all dilutive potential shares	8,525,119		8,527,544		8,632,856
	Diluted earnings per common share	$	2.18	$	1.94	$	1.47

Regulatory_Capital_Requirement1

Regulatory Capital Requirements and Restrictions on Subsidiary Cash (Tables)	12 Months Ended
	Dec. 31, 2013
Regulatory Capital Requirements and Restrictions on Subsidiary Cash [Abstract]	'
Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table Text Block]	'
	A comparison of the Company’s and the Bank’s capital with the corresponding minimum regulatory requirements is presented below:
		Actual				For Capital Adequacy Purposes				To Be Well Capitalized Under Prompt Corrective Action Provisions
		Amount		Ratio		Amount		Ratio		Amount		Ratio
	(dollars in thousands)
	At December 31, 2013:
	Consolidated:
	Total capital/risk based	$	200,714	14.62	%	$	109,812	8	%	N/A		N/A
	Tier 1 capital/risk based	183,361		13.36		54,906		4		N/A		N/A
	Tier 1 capital/adjusted average	183,361		10.55		69,491		4		N/A		N/A
	MidWestOne Bank:
	Total capital/risk based	$	183,646	13.49	%	$	108,903	8	%	$	136,128	10	%
	Tier 1 capital/risk based	166,612		12.24		54,451		4		81,677		6
	Tier 1 capital/adjusted average	166,612		9.65		69,063		4		86,329		5
	At December 31, 2012:
	Consolidated:
	Total capital/risk based	$	185,557	13.8	%	$	107,456	8	%	N/A		N/A
	Tier 1 capital/risk based	168,729		12.56		53,728		4		N/A		N/A
	Tier 1 capital/adjusted average	168,729		9.65		69,932		4		N/A		N/A
	MidWestOne Bank:
	Total capital/risk based	$	166,949	12.55	%	$	106,398	8	%	$	132,998	10	%
	Tier 1 capital/risk based	150,304		11.3		53,199		4		79,799		6
	Tier 1 capital/adjusted average	150,304		8.66		69,386		4		86,733		5

Commitments_and_Contingencies_

Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2013
Commitments and Contingencies [Abstract]	'
Credit Commitments [Table Text Block]	'
	A summary of the Bank’s commitments at December 31, 2013 and 2012, is as follows:
		December 31,
		2013		2012
	(in thousands)
	Commitments to extend credit	$	263,887	$	287,194
	Commitments to sell loans	357		1,195
	Standby letters of credit	4,491		4,619
	Total	$	268,735	$	293,008

Related_Party_Transactions_Tab

Related Party Transactions (Tables)	12 Months Ended
	Dec. 31, 2013
Related Party Transactions [Abstract]	'
Schedule of Related Party Transactions [Table Text Block]	'
	The following is an analysis of the changes in the loans to related parties during the years ended December 31, 2013 and 2012:
		Year Ended December 31,
		2013			2012
	(in thousands)
	Balance, beginning	$	21,935		$	20,861
	Net decrease due to change in related parties	(150		)	(102		)
	Advances	2,310			5,387
	Collections	(1,703		)	(4,211		)
	Balance, ending	$	22,392		$	21,935

Estimated_Fair_Value_of_Financ1

Estimated Fair Value of Financial Instruments and Fair Value Measurements (Tables)	12 Months Ended
	Dec. 31, 2013
Estimated Fair Value of Financial Instruments and Fair Value Measurements [Abstract]	'
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]	'
	The following table summarizes assets measured at fair value on a recurring basis as of December 31, 2013 and 2012. There were no liabilities subject to fair value measurement on a recurring basis as of these dates. The assets are segregated by the level of valuation inputs within the fair value hierarchy utilized to measure fair value:
		Fair Value Measurement at December 31, 2013 Using
	(in thousands)	Total				Quoted Prices in			Significant Other				Significant
						Active Markets for			Observable				Unobservable
						Identical Assets			Inputs				Inputs
						(Level 1)			(Level 2)				(Level 3)
	Assets:
	Available for sale debt securities:
	U.S. Government agencies and corporations	$	44,939			$	—		$	44,939			$	—
	State and political subdivisions	210,796				—			210,796				—
	Mortgage-backed securities	39,285				—			39,285				—
	Collateralized mortgage obligations	169,223				—			169,223				—
	Corporate debt securities	29,944				—			29,944				—
	Collateralized debt obligations	1,317				—			—				1,317
	Total available for sale debt securities	495,504				—			494,187				1,317
	Available for sale equity securities:
	Other equity securities	3,057				3,057			—				—
	Total available for sale equity securities	3,057				3,057			—				—
	Total securities available for sale	$	498,561			$	3,057		$	494,187			$	1,317
	Mortgage servicing rights	$	2,298			$	—		$	—			$	2,298
		Fair Value Measurement at December 31, 2012 Using
	(in thousands)	Total				Quoted Prices in			Significant				Significant
						Active Markets for			Other				Unobservable
						Identical Assets			Observable				Inputs
						(Level 1)			Inputs				(Level 3)
									(Level 2)
	Assets:
	Available for sale debt securities:
	U.S. Government agencies and corporations	$	69,783			$	—		$	69,783			$	—
	State and political subdivisions	218,019				—			218,019				—
	Mortgage-backed securities	59,256				—			59,256				—
	Collateralized mortgage obligations	183,862				—			183,862				—
	Corporate debt securities	24,185				—			24,185				—
	Collateralized debt obligations	755				—			—				755
	Total available for sale debt securities	555,860				—			555,105				755
	Available for sale equity securities:
	Other equity securities	1,681				1,681			—				—
	Total available for sale equity securities:	1,681				1,681			—				—
	Total securities available for sale	$	557,541			$	1,681		$	555,105			$	755
	Mortgage servicing rights	$	1,484			$	—		$	—			$	1,484
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]	'
	The following table presents additional information about assets measured at fair market value on a recurring basis for which the Company has utilized Level 3 inputs to determine fair value for the years ended December 31, 2013 and 2012:
			2013							2012
			Collateralized				Mortgage			Collateralized				Mortgage
			Debt				Servicing			Debt				Servicing
			Obligations				Rights			Obligations				Rights
	(in thousands)
	Beginning balance		$	755			$	1,484		$	806			$	1,265
	Transfers into Level 3		—				—			—				—
	Transfers out of Level 3		—				—			—				—
	Total gains (losses):
	Included in earnings		(18		)		293			(345		)		(500		)
	Included in other comprehensive income		822				—			294				—
	Purchases, issuances, sales, and settlements:
	Purchases		—				—			—				—
	Issuances		—				521			—				719
	Sales		—				—			—				—
	Settlements		(242		)		—			—				—
	Ending Balance		$	1,317			$	2,298		$	755			$	1,484
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Table Text Block]	'
	The following table presents the amount of gains and losses included in earnings and other comprehensive income for the years ended December 31, 2013 and 2012 that are attributable to the change in unrealized gains and losses relating to those assets still held, and the line item in the consolidated financial statements in which they are included:
			2013							2012
			Collateralized				Mortgage			Collateralized				Mortgage
			Debt				Servicing			Debt				Servicing
			Obligations				Rights			Obligations				Rights
	(in thousands)
	Total gains (losses) for the period in earnings*		$	(18	)		$	814		$	(345	)		$	219
	Change in unrealized losses for the period included in other comprehensive income		822				—			294				—
	* Losses on collateralized debt obligations are included in gain on sale or call of available for sale securities, while gains on mortgage servicing rights are included in mortgage origination and loan servicing fees, both in the consolidated statements of operations.
Fair Value Measurements, Nonrecurring [Table Text Block]	'
	The following table discloses the Company’s estimated fair value amounts of its financial instruments recorded at fair value on a nonrecurring basis. It is management’s belief that the fair values presented below are reasonable based on the valuation techniques and data available to the Company as of December 31, 2013 and 2012, as more fully described below.
		Fair Value Measurement at December 31, 2013 Using
	(in thousands)	Total				Quoted Prices in			Significant Other				Significant
						Active Markets for			Observable				Unobservable
						Identical Assets			Inputs				Inputs
						(Level 1)			(Level 2)				(Level 3)
	Assets:
	Collateral dependent impaired loans:
	Agricultural	$	—			$	—		$	—			$	—
	Commercial and industrial	1,043				—			—				1,043
	Credit cards	—				—			—				—
	Overdrafts	—				—			—				—
	Commercial real estate:
	Construction and development	136				—			—				136
	Farmland	65				—			—				65
	Multifamily	—				—			—				—
	Commercial real estate-other	1,786				—			—				1,786
	Total commercial real estate	1,987				—			—				1,987
	Residential real estate:
	One- to four- family first liens	186				—			—				186
	One- to four- family junior liens	30				—			—				30
	Total residential real estate	216				—			—				216
	Consumer	44				—			—				44
	Collateral dependent impaired loans	3,290				—			—				3,290
	Other real estate owned	1,770				—			—				1,770
		Fair Value Measurement at December 31, 2012 Using
	(in thousands)	Total				Quoted Prices in			Significant Other				Significant
						Active Markets for			Observable				Unobservable
						Identical Assets			Inputs				Inputs
						(Level 1)			(Level 2)				(Level 3)
	Assets:
	Collateral dependent impaired loans:
	Agricultural	$	—			$	—		$	—			$	—
	Commercial and industrial	1,106				—			—				1,106
	Credit cards	—				—			—				—
	Overdrafts	—				—			—				—
	Commercial real estate:
	Construction and development	496				—			—				496
	Farmland	—				—			—				—
	Multifamily	—				—			—				—
	Commercial real estate-other	501				—			—				501
	Total commercial real estate	997				—			—				997
	Residential real estate:
	One- to four- family first liens	114				—			—				114
	One- to four- family junior liens	19				—			—				19
	Total residential real estate	133				—			—				133
	Consumer	32				—			—				32
	Collateral dependent impaired loans	2,268				—			—				2,268
	Other real estate owned	3,278				—			—				3,278
Fair Value, by Balance Sheet Grouping [Table Text Block]	'
	The following presents the carrying amount and estimated fair value of the financial instruments held by the Company at December 31, 2013 and 2012. The information presented is subject to change over time based on a variety of factors. The operations of the Company are managed on a going concern basis and not a liquidation basis. As a result, the ultimate value realized from the financial instruments presented could be substantially different when actually recognized over time through the normal course of operations. Additionally, a substantial portion of the Company’s inherent value is the Bank’s capitalization and franchise value. Neither of these components has been given consideration in the presentation of fair values below.
		December 31, 2013
		Carrying				Estimated			Quoted Prices in Active Markets for Identical Assets (Level 1)				Significant Other Observable Inputs (Level 2)				Significant Unobservable Inputs
		Amount				Fair Value											(Level 3)
	(in thousands)
	Financial assets:
	Cash and cash equivalents	$	24,890			$	24,890		$	24,890			$	—			$	—
	Investment securities:
	Available for sale	498,561				498,561			3,057				494,187				1,317
	Held to maturity	32,625				30,191			—				30,191				—
	Total investment securities	531,186				528,752			3,057				524,378				1,317
	Loans held for sale	357				367			—				—				367
	Loans, net:
	Agricultural	95,712				95,609			—				—				95,609
	Commercial and industrial	257,153				256,257			—				—				256,257
	Credit cards	998				998			—				—				998
	Overdrafts	415				415			—				—				415
	Commercial real estate:
	Construction and development	71,433				71,569			—				—				71,569
	Farmland	84,387				85,058			—				—				85,058
	Multifamily	54,883				54,953			—				—				54,953
	Commercial real estate-other	217,993				219,213			—				—				219,213
	Total commercial real estate	428,696				430,793			—				—				430,793
	Residential real estate:
	One- to four- family first liens	217,765				218,257			—				—				218,257
	One- to four- family junior liens	52,903				53,798			—				—				53,798
	Total residential real estate	270,668				272,055			—				—				272,055
	Consumer	18,591				18,638			—				—				18,638
	Total loans, net	1,072,233				1,074,765			—				—				1,074,765
	Loan pool participations, net	25,533				25,533			—				—				25,533
	Accrued interest receivable	10,409				10,409			10,409				—				—
	Federal Home Loan Bank stock	9,226				9,226			—				9,226				—
	Financial liabilities:
	Deposits:
	Non-interest-bearing demand	222,359				222,359			222,359				—				—
	Interest-bearing checking	592,673				592,673			592,673				—				—
	Savings	94,559				94,559			94,559				—				—
	Certificates of deposit under $100,000	256,283				256,549			—				256,549				—
	Certificates of deposit $100,000 and over	209,068				209,543			—				209,543				—
	Total deposits	1,374,942				1,375,683			909,591				466,092				—
	Federal funds purchased and securities sold under agreements to repurchase	66,665				66,665			66,665				—				—
	Federal Home Loan Bank borrowings	106,900				107,356			—				—				107,356
	Long-term debt	15,464				9,872			—				—				9,872
	Accrued interest payable	765				765			765				—				—
		December 31, 2012
		Carrying				Estimated			Quoted Prices in Active Markets for Identical Assets (Level 1)				Significant Other Observable Inputs (Level 2)				Significant Unobservable Inputs
		Amount				Fair Value											(Level 3)
	(in thousands)
	Financial assets:
	Cash and cash equivalents	$	47,191			$	47,191		$	47,191			$	—			$	—
	Investment securities:
	Available for sale	557,541				557,541			1,681				555,105				755
	Held to maturity	32,669				32,920			—				32,920				—
	Total investment securities	590,210				590,461			1,681				588,025				755
	Loans held for sale	1,195				1,224			—				—				1,224
	Loans, net:
	Agricultural	83,602				83,180			—				—				83,180
	Commercial and industrial	232,337				230,615			—				—				230,615
	Credit cards	982				982			—				—				982
	Overdrafts	562				562			—				—				562
	Commercial real estate:
	Construction and development	84,645				84,335			—				—				84,335
	Farmland	80,425				79,931			—				—				79,931
Multifamily	47,407				47,450			—				—				47,450
Commercial real estate-other	221,229				222,421			—				—				222,421
Total commercial real estate	433,706				434,137			—				—				434,137
Residential real estate:
One- to four- family first liens	195,126				193,906			—				—				193,906
One- to four- family junior liens	54,449				54,808			—				—				54,808
Total residential real estate	249,575				248,714			—				—				248,714
Consumer	18,563				18,631			—				—				18,631
Total loans, net	1,019,327				1,016,821			—				—				1,016,821
Loan pool participations, net	35,650				35,650			—				—				35,650
Accrued interest receivable	10,292				10,292			10,292				—				—
Federal Home Loan Bank stock	11,087				11,087			—				11,087				—
Financial liabilities:
Deposits:
Non-interest bearing demand	190,491				190,491			190,491				—				—
Interest-bearing checking	582,283				582,283			582,283				—				—
Savings	91,603				91,603			91,603				—				—
Certificates of deposit under $100,000	312,489				314,978			—				314,978				—
Certificates of deposit $100,000 and over	222,867				224,311			—				224,311				—
Total deposits	1,399,733				1,403,666			864,377				539,289				—
Federal funds purchased and securities sold under agreements to repurchase	68,823				68,823			68,823				—				—
Federal Home Loan Bank borrowings	120,120				123,202			—				—				123,202
Long-term debt	15,464				9,939			—				—				9,939
Accrued interest payable	1,475				1,475			1,475				—				—
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Table Text Block]	'
	The following presents the valuation technique(s), observable inputs, and quantitative information about the unobservable inputs used for fair value measurements of the financial instruments held by the Company at December 31, 2013, categorized within Level 3 of the fair value hierarchy:
		Quantitative Information About Level 3 Fair Value Measurements
	(dollars in thousands)	Fair Value at December 31, 2013				Valuation Techniques(s)		Unobservable Input	Range of Inputs						Weighted Average
	Collateralized debt obligations	$	1,317			Discounted cash flows		Pretax discount rate	15	%		15	%		15	%
								Actual defaults	14	%		17.4	%		15.3	%
								Actual deferrals	4.7	%		16	%		8.7	%
								Projected defaults	10.4	%		13	%		10.9	%
	Collateral dependent impaired loans:
	Commercial and industrial	1,043				Modified appraised value		Third party appraisal	NM *			NM *			NM *
								Appraisal discount	NM *			NM *			NM *
	Construction & development	136				Modified appraised value		Third party appraisal	NM *			NM *			NM *
								Appraisal discount	NM *			NM *			NM *
	Farmland	65				Modified appraised value		Third party appraisal	NM *			NM *			NM *
								Appraisal discount	NM *			NM *			NM *
	Commercial real estate-other	1,786				Modified appraised value		Third party appraisal	NM *			NM *			NM *
								Appraisal discount	NM *			NM *			NM *
	Residential real estate one- to four-	186				Modified appraised value		Third party appraisal	NM *			NM *			NM *
	family first liens							Appraisal discount	NM *			NM *			NM *
	Residential real estate one- to four-	30				Modified appraised value		Third party appraisal	NM *			NM *			NM *
	family junior liens							Appraisal discount	NM *			NM *			NM *
	Consumer	44				Modified appraised value		Third party appraisal	NM *			NM *			NM *
								Appraisal discount	NM *			NM *			NM *
	Mortgage servicing rights	2,298				Discounted cash flows		Constant prepayment rate	6.77	%		17.15	%		7.64	%
								Pretax discount rate	10	%		13	%		10.17	%
	Other real estate owned	1,770				Modified appraised value		Third party appraisal	NM *			NM *			NM *
								Appraisal discount	NM *			NM *			NM *
	* Not Meaningful. Third party appraisals are obtained as to the value of the underlying asset, but disclosure of this information would not provide meaningful information, as the range will vary widely from loan to loan. Types of discounts considered include age of the appraisal, local market conditions, current condition of the property, and estimated sales costs. These discounts will also vary from loan to loan, thus providing a range would not be meaningful.

Parent_Company_Only_Financial_1

Parent Company Only Financial Information (Tables)	12 Months Ended
	Dec. 31, 2013
Parent Company Only Financial Information [Abstract]	'
Schedule of Condensed Balance Sheet [Table Text Block]	'
	The following is condensed financial information of MidWestOne Financial Group, Inc. as of December 31, 2013 and 2012 (parent company only):
		As of December 31,
		2013			2012
	(in thousands)
	Balance Sheets
	Assets:
	Cash	$	5,781		$	5,777
	Investment in subsidiaries	177,190			171,528
	Marketable equity securities, available for sale	2,111			1,681
	Loan pool participations, net	3,409			6,128
	Income tax receivable	75			8
	Deferred income taxes	729			269
	Other assets	4,447			4,282
	Total assets	$	193,742		$	189,673
	Liabilities and Shareholders’ Equity
	Liabilities:
	Long-term debt	$	15,464		$	15,464
	Other liabilities	262			277
	Total liabilities	15,726			15,741
	Shareholders’ equity:
	Capital stock, preferred	—			—
	Capital stock, common	8,690			8,690
	Additional paid-in capital	80,506			80,383
	Treasury stock	(3,702		)	(3,316		)
	Retained earnings	91,473			77,125
	Accumulated other comprehensive income	1,049			11,050
	Total shareholders’ equity	178,016			173,932
	Total liabilities and shareholders’ equity	$	193,742		$	189,673
Schedule of Condensed Income Statement [Table Text Block]	'
	The following is condensed financial information of MidWestOne Financial Group, Inc. as of December 31, 2013, 2012, and 2011 (parent company only):
		Year Ended December 31,
		2013			2012			2011
	(in thousands)
	Statements of Income
	Dividends received from subsidiaries	$	4,006		$	5,520		$	18,863
	Interest income and dividends on marketable equity securities	33			168			190
	Interest and discount on loan pool participations	(940		)	(2,149		)	(1,474		)
	Investment securities gains	—			381			—
	Interest on long-term debt	(296		)	(656		)	(657		)
	Operating expenses	(1,034		)	(1,064		)	(983		)
	Income before income taxes and equity in subsidiaries’ undistributed income	1,769			2,200			15,939
	Income tax benefit	(890		)	(1,355		)	(1,030		)
	Income before equity in subsidiaries’ undistributed income (loss)	2,659			3,555			16,969
	Equity in subsidiaries’ undistributed income (loss)	15,948			12,979			(3,658		)
	Net income	$	18,607		$	16,534		$	13,311
Schedule of Condensed Cash Flow Statement [Table Text Block]	'
	The following is condensed financial information of MidWestOne Financial Group, Inc. as of December 31, 2013, 2012, and 2011 (parent company only):
		Year Ended December 31,
		2013			2012			2011
	(in thousands)
	Statements of Cash Flows
	Cash flows from operating activities:
	Net income	$	18,607		$	16,534		$	13,311
	Adjustments to reconcile net income to net cash provided by operating activities:
	Undistributed (earnings) loss of subsidiaries, net of dividends and distributions	(15,948		)	(12,979		)	3,658
	Depreciation	—			—			2
	Deferred income taxes	(583		)	(106		)	1
	Investment securities gain	—			(381		)	—
	Stock based compensation	384			266			220
	Increase in other assets	(232		)	(158		)	(85		)
	Increase (decrease) in other liabilities	(15		)	4			(31		)
	Net cash provided by operating activities	2,213			3,180			17,076
	Cash flows from investing activities
	Proceeds from sales of investment securities	2			1,131			—
	Purchase of investment securities	(24		)	(1,192		)	(10		)
	Loan participation pools, net	2,719			5,834			801
	Proceeds from sales of premises and equipment	—			—			7
	Net cash provided by investing activities	2,697			5,773			798
	Cash flows from financing activities:
	Stock options exercised	320			590			83
	Repurchase of common stock	(967		)	(1,810		)	(1,498		)
	Dividends paid	(4,259		)	(3,054		)	(2,404		)
	Redemption of preferred stock	—			—			(16,000		)
	Repurchase of common stock warrant	—			—			(1,000		)
	Net cash used in financing activities	(4,906		)	(4,274		)	(20,819		)
	Increase (decrease) in cash	4			4,679			(2,945		)
	Cash Balance:
	Beginning	5,777			1,098			4,043
	Ending	$	5,781		$	5,777		$	1,098

Quarterly_Results_of_Operation1

Quarterly Results of Operations (unaudited) (Tables)	12 Months Ended
	Dec. 31, 2013
Quarterly Results of Operations [Abstract]	'
Schedule of Quarterly Financial Information [Table Text Block]	'
		Three Months Ended
		31-Dec		30-Sep		30-Jun		31-Mar
	(in thousands, except per share amounts)
	2013
	Interest income	$	16,020	$	16,116	$	16,768	$	17,190
	Interest expense	2,723		2,851		3,159		3,399
	Net interest income	13,297		13,265		13,609		13,791
	Provision for loan losses	300		250		600		200
	Noninterest income	3,234		3,800		3,713		3,981
	Noninterest expense	10,225		10,283		10,585		10,994
	Income before income taxes	6,006		6,532		6,137		6,578
	Income tax expense	1,584		1,668		1,606		1,788
	Net income	$	4,422	$	4,864	$	4,531	$	4,790
	Net income per common share - basic	$	0.52	$	0.57	$	0.54	$	0.56
	Net income per common share - diluted	$	0.52	$	0.57	$	0.53	$	0.56
	2012
	Interest income	$	16,924	$	17,586	$	17,277	$	17,515
	Interest expense	3,767		3,867		4,051		4,267
	Net interest income	13,157		13,719		13,226		13,248
	Provision for loan losses	650		575		575		579
	Noninterest income	4,111		3,258		8,167		4,201
	Noninterest expense	10,864		10,713		16,580		10,803
	Income before income taxes	5,754		5,689		4,238		6,067
	Income tax expense	1,402		1,451		726		1,635
	Net income	$	4,352	$	4,238	$	3,512	$	4,432
	Net income per common share - basic	$	0.51	$	0.5	$	0.42	$	0.52
	Net income per common share - diluted	$	0.51	$	0.5	$	0.41	$	0.52

Nature_of_Business_and_Signifi4

Nature of Business and Significant Accounting Policies Prior Period Accounting Correction (Details) (USD $)	3 Months Ended								12 Months Ended				12 Months Ended				12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2009	Dec. 31, 2010	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
													Scenario, Adjustment [Member]	Scenario, Adjustment [Member]	Scenario, Adjustment [Member]	Scenario, Adjustment [Member]	Scenario, Previously Reported [Member]	Scenario, Previously Reported [Member]	Scenario, Previously Reported [Member]
Retained earnings	$91,473	'	'	'	$77,125	'	'	'	$91,473	$77,125	$63,645	$52,971	($2,870)	($2,654)	'	($2,648)	'	$66,299	$55,619
Accumulated other comprehensive income (loss), net of tax	1,049	'	'	'	11,050	'	'	'	1,049	11,050	6,138	822	'	2,654	'	2,648	'	3,484	-1,826
Other than temporary impairment losses, investments, portion recognized in earnings, net of tax	'	'	'	'	'	'	'	'	'	'	'	'	'	'	2,322	'	'	'	'
Net income (loss)	$4,422	$4,864	$4,531	$4,790	$4,352	$4,238	$3,512	$4,432	$18,607	$16,534	$13,311	'	($217)	($6)	'	'	$16,751	$13,317	'
Earnings per share, basic	$0.52	$0.57	$0.54	$0.56	$0.51	$0.50	$0.42	$0.52	$2.19	$1.95	$1.47	'	'	'	'	'	$1.97	'	'
Earnings per share, diluted	$0.52	$0.57	$0.53	$0.56	$0.51	$0.50	$0.41	$0.52	$2.18	$1.94	$1.47	'	'	'	'	'	$1.96	'	'

Nature_of_Business_and_Signifi5

Nature of Business and Significant Accounting Policies Premises and Equipment (Details)	12 Months Ended
	Dec. 31, 2013
Property, Plant and Equipment [Line Items]	'
Property, Plant and Equipment, Depreciation Methods	'Straight-line
Buildings and leasehold improvements | Minimum	'
Property, Plant and Equipment [Line Items]	'
Property, Plant and Equipment, Useful Life	'10 years
Buildings and leasehold improvements | Maximum	'
Property, Plant and Equipment [Line Items]	'
Property, Plant and Equipment, Useful Life	'30 years
Furniture and equipment | Minimum	'
Property, Plant and Equipment [Line Items]	'
Property, Plant and Equipment, Useful Life	'3 years
Furniture and equipment | Maximum	'
Property, Plant and Equipment [Line Items]	'
Property, Plant and Equipment, Useful Life	'10 years

Nature_of_Business_and_Signifi6

Nature of Business and Significant Accounting Policies Stock Repurchase (Details) (USD $)	12 Months Ended			3 Months Ended	12 Months Ended		15 Months Ended	12 Months Ended
In Millions, except Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Oct. 17, 2011	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2013
				Common Stock [Member]	Common Stock [Member]	Common Stock [Member]	Common Stock [Member]	Common Stock [Member]	Common Stock [Member]
				July 26 2011 Share Repurchase Program [Member]	October 18 2011 Share Repurchase Program [Member]	October 18 2011 Share Repurchase Program [Member]	October 18 2011 Share Repurchase Program [Member]	January 15 2013 Share Repurchase Program [Member]	January 15 2013 Share Repurchase Program [Member]
Equity, Class of Treasury Stock [Line Items]	'	'	'	'	'	'	'	'	'
Stock Repurchase Program, Authorized Amount	'	'	'	$1	'	'	$5	$5	'
Stock Repurchased During Period, Shares	40,713	104,518	102,190	'	0	104,518	'	'	'
Stock Repurchased During Period, Value	'	'	'	'	1	1.8	'	'	'
Stock Repurchase Program, Remaining Authorized Repurchase Amount	'	'	'	'	'	'	$2.40	'	$4

Schedule_of_Cumulative_Other_C

Schedule of Cumulative Other Comprehensive Income (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
In Thousands, unless otherwise specified
Schedule of Cumulative Other Comprehensive Income [Line Items]	'	'	'	'
Accumulated Other Comprehensive Income (Loss), Net of Tax	$1,049	$11,050	$6,138	$822
Accumulated Other Comprehensive Income (Loss) [Member]	'	'	'	'
Schedule of Cumulative Other Comprehensive Income [Line Items]	'	'	'	'
Accumulated Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax	1,049	11,050	9,880	'
Accumulated Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax	0	0	-3,742	'
Accumulated Other Comprehensive Income (Loss), Net of Tax	$1,049	$11,050	$6,138	'

Schedule_of_Available_for_Sale

Schedule of Available for Sale Securities(Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Schedule of Available-for-sale Securities [Line Items]	'	'
Estimated fair value	$498,561	$557,541
U.S. Government agencies and corporations	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized cost basis	45,279	68,707
Gross unrealized gains	527	1,132
Gross unrealized losses	867	56
Estimated fair value	44,939	69,783
State and political subdivisions	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized cost basis	207,734	206,392
Gross unrealized gains	5,625	11,752
Gross unrealized losses	2,563	125
Estimated fair value	210,796	218,019
Mortgage-backed securities	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized cost basis	37,593	56,149
Gross unrealized gains	1,692	3,110
Gross unrealized losses	0	0
Estimated fair value	39,285	59,259
Collateralized mortgage obligations	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized cost basis	171,714	180,564
Gross unrealized gains	1,003	3,323
Gross unrealized losses	3,494	28
Estimated fair value	169,223	183,859
Collateralized debt obligations	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized cost basis	2,111	2,371
Gross unrealized gains	190	0
Gross unrealized losses	984	1,616
Estimated fair value	1,317	755
Corporate debt securities	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized cost basis	29,802	24,067
Gross unrealized gains	284	360
Gross unrealized losses	142	242
Estimated fair value	29,944	24,185
Total debt securities	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized cost basis	494,233	538,250
Gross unrealized gains	9,321	19,677
Gross unrealized losses	8,050	2,067
Estimated fair value	495,504	555,860
Equity securities	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized cost basis	2,659	1,637
Gross unrealized gains	453	109
Gross unrealized losses	55	65
Estimated fair value	3,057	1,681
Total investment securities	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized cost basis	496,892	539,887
Gross unrealized gains	9,774	19,786
Gross unrealized losses	8,105	2,132
Estimated fair value	$498,561	$557,541

Schedule_of_Held_to_Maturity_S

Schedule of Held to Maturity Securities (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Schedule of Held-to-maturity Securities [Line Items]	'	'
Total amortized Cost	$32,625	$32,669
Total, estimated fair Value	30,191	32,920
State and political subdivisions	'	'
Schedule of Held-to-maturity Securities [Line Items]	'	'
Total amortized Cost	19,888	19,278
Gross unrealized gains	0	199
Gross unrealized losses	1,326	57
Total, estimated fair Value	18,562	19,420
Mortgage-backed securities	'	'
Schedule of Held-to-maturity Securities [Line Items]	'	'
Total amortized Cost	28	43
Gross unrealized gains	3	5
Gross unrealized losses	0	0
Total, estimated fair Value	31	48
Collateralized mortgage obligations	'	'
Schedule of Held-to-maturity Securities [Line Items]	'	'
Total amortized Cost	9,447	10,090
Gross unrealized gains	0	116
Gross unrealized losses	834	0
Total, estimated fair Value	8,613	10,206
Corporate debt securities	'	'
Schedule of Held-to-maturity Securities [Line Items]	'	'
Total amortized Cost	3,262	3,258
Gross unrealized gains	0	0
Gross unrealized losses	277	12
Total, estimated fair Value	2,985	3,246
Total investment securities	'	'
Schedule of Held-to-maturity Securities [Line Items]	'	'
Total amortized Cost	32,625	32,669
Gross unrealized gains	3	320
Gross unrealized losses	2,437	69
Total, estimated fair Value	$30,191	$32,920

Available_for_Sale_Securities_

Available for Sale Securities in Continuous Loss Position (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified	count	count
U.S. Government agencies and corporations	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Available for sale securities in unrealized loss positions, number of positions	3	2
Available for sale securities, continuous unrealized loss position, less than twelve months, estimated fair value	$21,977	$15,359
Available for sale securities, continuous unrealized loss position, aggregate loss, less than twelve months	867	56
Available for sale securities, continuous unrealized loss position, twelve months or longer, estimated fair value	'	'
Available for sale securities, continuous unrealized loss position, aggregate loss, twelve months or longer	'	'
Available for sale securities, continuous unrealized loss position, fair value	21,977	15,359
Available for sale securities, aggregate loss, continuous unrealized loss position	867	56
State and political subdivisions	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Available for sale securities in unrealized loss positions, number of positions	171	27
Available for sale securities, continuous unrealized loss position, less than twelve months, estimated fair value	54,153	7,221
Available for sale securities, continuous unrealized loss position, aggregate loss, less than twelve months	2,331	125
Available for sale securities, continuous unrealized loss position, twelve months or longer, estimated fair value	1,799	'
Available for sale securities, continuous unrealized loss position, aggregate loss, twelve months or longer	232	'
Available for sale securities, continuous unrealized loss position, fair value	55,952	7,221
Available for sale securities, aggregate loss, continuous unrealized loss position	2,563	125
Collateralized mortgage obligations	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Available for sale securities in unrealized loss positions, number of positions	18	2
Available for sale securities, continuous unrealized loss position, less than twelve months, estimated fair value	110,142	10,919
Available for sale securities, continuous unrealized loss position, aggregate loss, less than twelve months	3,164	28
Available for sale securities, continuous unrealized loss position, twelve months or longer, estimated fair value	5,047	'
Available for sale securities, continuous unrealized loss position, aggregate loss, twelve months or longer	330	'
Available for sale securities, continuous unrealized loss position, fair value	115,189	10,919
Available for sale securities, aggregate loss, continuous unrealized loss position	3,494	28
Collateralized debt obligations	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Available for sale securities in unrealized loss positions, number of positions	3	5
Available for sale securities, continuous unrealized loss position, less than twelve months, estimated fair value	0	'
Available for sale securities, continuous unrealized loss position, aggregate loss, less than twelve months	0	'
Available for sale securities, continuous unrealized loss position, twelve months or longer, estimated fair value	934	755
Available for sale securities, continuous unrealized loss position, aggregate loss, twelve months or longer	984	1,616
Available for sale securities, continuous unrealized loss position, fair value	934	755
Available for sale securities, aggregate loss, continuous unrealized loss position	984	1,616
Corporate debt securities	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Available for sale securities in unrealized loss positions, number of positions	3	4
Available for sale securities, continuous unrealized loss position, less than twelve months, estimated fair value	7,430	14,672
Available for sale securities, continuous unrealized loss position, aggregate loss, less than twelve months	93	242
Available for sale securities, continuous unrealized loss position, twelve months or longer, estimated fair value	1,561	'
Available for sale securities, continuous unrealized loss position, aggregate loss, twelve months or longer	49	'
Available for sale securities, continuous unrealized loss position, fair value	8,991	14,672
Available for sale securities, aggregate loss, continuous unrealized loss position	142	242
Equity securities	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Available for sale securities in unrealized loss positions, number of positions	1	1
Available for sale securities, continuous unrealized loss position, less than twelve months, estimated fair value	945	754
Available for sale securities, continuous unrealized loss position, aggregate loss, less than twelve months	55	65
Available for sale securities, continuous unrealized loss position, twelve months or longer, estimated fair value	'	'
Available for sale securities, continuous unrealized loss position, aggregate loss, twelve months or longer	'	'
Available for sale securities, continuous unrealized loss position, fair value	945	754
Available for sale securities, aggregate loss, continuous unrealized loss position	55	65
Total investment securities	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Available for sale securities in unrealized loss positions, number of positions	199	41
Available for sale securities, continuous unrealized loss position, less than twelve months, estimated fair value	194,647	48,925
Available for sale securities, continuous unrealized loss position, aggregate loss, less than twelve months	6,510	516
Available for sale securities, continuous unrealized loss position, twelve months or longer, estimated fair value	9,341	755
Available for sale securities, continuous unrealized loss position, aggregate loss, twelve months or longer	1,595	1,616
Available for sale securities, continuous unrealized loss position, fair value	203,988	49,680
Available for sale securities, aggregate loss, continuous unrealized loss position	$8,105	$2,132

Held_to_Maturity_Securities_in

Held to Maturity Securities in Continuous Loss Position (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified	count	count
State and political subdivisions	'	'
Schedule of Held-to-maturity Securities [Line Items]	'	'
Held-to-maturity, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	30	11
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	$17,420	$3,672
Held to Maturity Securities, Continuous Unrealized Loss Position, Aggregate Loss, Less than 12 Months	1,195	57
Held-to-maturity Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	1,142	'
Held to Maturity Securities, Continuous Unrealized Loss Position, Aggregate Loss, 12 Months or Longer	131	'
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value	18,562	3,672
Held-to-maturity Securities, Aggregate Loss, Continuous Unrealized Loss Position	1,326	57
Collateralized mortgage obligations	'	'
Schedule of Held-to-maturity Securities [Line Items]	'	'
Held-to-maturity, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	1	'
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	8,613	'
Held to Maturity Securities, Continuous Unrealized Loss Position, Aggregate Loss, Less than 12 Months	834	'
Held-to-maturity Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	'	'
Held to Maturity Securities, Continuous Unrealized Loss Position, Aggregate Loss, 12 Months or Longer	'	'
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value	8,613	'
Held-to-maturity Securities, Aggregate Loss, Continuous Unrealized Loss Position	834	'
Corporate debt securities	'	'
Schedule of Held-to-maturity Securities [Line Items]	'	'
Held-to-maturity, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	2	1
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	2,984	2,371
Held to Maturity Securities, Continuous Unrealized Loss Position, Aggregate Loss, Less than 12 Months	277	12
Held-to-maturity Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	'	'
Held to Maturity Securities, Continuous Unrealized Loss Position, Aggregate Loss, 12 Months or Longer	'	'
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value	2,984	2,371
Held-to-maturity Securities, Aggregate Loss, Continuous Unrealized Loss Position	277	12
Total investment securities	'	'
Schedule of Held-to-maturity Securities [Line Items]	'	'
Held-to-maturity, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	33	12
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	29,017	6,043
Held to Maturity Securities, Continuous Unrealized Loss Position, Aggregate Loss, Less than 12 Months	2,306	69
Held-to-maturity Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	1,142	0
Held to Maturity Securities, Continuous Unrealized Loss Position, Aggregate Loss, 12 Months or Longer	131	'
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value	30,159	6,043
Held-to-maturity Securities, Aggregate Loss, Continuous Unrealized Loss Position	$2,437	$69

Credit_Losses_on_Fixed_Maturit

Credit Losses on Fixed Maturity Securities Recognized in Net Income (Details) (Available-for-sale Securities [Member], Collateralized debt obligations, USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Available-for-sale Securities [Member] | Collateralized debt obligations	'	'
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward]	'	'
Beginning balance	$7,379	$7,034
Additional credit losses:	'	'
Securities with no previous other than temporary impairment	0	0
Securities with previous other than temporary impairments	0	345
Reductions to credit losses:	'	'
Securities with previous other than temporary impairments, due to liquidation	-740	0
Ending balance	$6,639	$7,379

Investments_Classified_by_Cont

Investments Classified by Contractual Maturity (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Schedule of Available-for-sale Securities [Line Items]	'	'
Due in one year or less, amortized cost	$14,753	'
Due after one year through five years, amortized cost	105,845	'
Due after five years through ten years, amortized cost	103,847	'
Due after ten years, amortized cost	60,481	'
Debt securities without a single maturity date, amortized cost	209,307	'
Total, amortized cost	494,233	'
Due in one year or less, estimated fair value	14,959	'
Due after one year through five years, estimated fair value	108,406	'
Due after five years through ten years, estimated fair value	105,127	'
Due after ten years, estimated fair value	58,504	'
Debt securities without a single maturity date, estimated fair value	208,508	'
Total, estimated fair value	495,504	'
Held-to-maturity Securities, Debt Maturities [Abstract]	'	'
Due in one year or less, amortized cost	185	'
Due after one year through five years, amortized cost	2,574	'
Due after five years through ten years, amortized cost	7,780	'
Due after ten years, amortized cost	12,611	'
Debt securities without a single maturity date, amortized cost	9,475	'
Total amortized Cost	32,625	32,669
Due in one year or less, estimated fair value	185	'
Due after one year through five years, estimated fair value	2,522	'
Due after five years through ten years, estimated fair value	7,517	'
Due after ten years, estimated fair value	11,323	'
Debt securities without a single maturity date, estimated fair value	8,644	'
Total, estimated fair Value	$30,191	$32,920

Investment_Securities_Realized

Investment Securities Realized Gains and Losses (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Debt securities	'	'	'
Gain (Loss) on Investments [Line Items]	'	'	'
Gross realized gains	$144	$424	$490
Gross realized losses	79	0	0
Other-than-temporary impairment	0	345	9
Total	65	79	481
Equity securities	'	'	'
Gain (Loss) on Investments [Line Items]	'	'	'
Gross realized gains	0	381	0
Gross realized losses	0	0	0
Other-than-temporary impairment	0	0	0
Total	'	381	0
Total investment securities	'	'	'
Gain (Loss) on Investments [Line Items]	'	'	'
Total	$65	$460	$481

Investment_Securities_Investme

Investment Securities Investment Securities Textual References (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
	count
Schedule of Available-for-sale Securities [Line Items]	'	'	'
Available for sale	$498,561,000	$557,541,000	'
Available-for-sale securities pledged as collateral	202,800,000	178,700,000	'
Investment in Collateralized Debt Obligations, Number of Securities	5	'	'
Proceeds from sales of investment securities	12,447,000	18,307,000	'
Federal Home Loan Bank Stock	9,226,000	11,087,000	'
State and political subdivisions	'	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'	'
Available for sale	210,796,000	218,019,000	'
Collateralized debt obligations	'	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'	'
Available for sale	1,317,000	755,000	'
Investment in Collateralized Debt Obligations, Original Basis	8,800,000	'	'
Corporate debt securities	'	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'	'
Available for sale	29,944,000	24,185,000	'
Equity securities	'	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'	'
Available for sale	3,057,000	1,681,000	'
Other-than-temporary impairment	0	0	0
Fixed Income Funds [Member]	'	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'	'
Available for sale	900,000	'	'
IOWA | State and political subdivisions	'	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'	'
Geographic Concentration of Investments Credit Risk	62.00%	'	'
Banks, Trust and Insurance, Equities [Member] | Equity securities	'	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'	'
Available for sale	2,100,000	'	'
Carrying Amount	'	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'	'
Available for sale	498,561,000	557,541,000	'
Federal Home Loan Bank Stock	$9,226,000	$11,087,000	'

Allowance_for_Loan_Losses_and_

Allowance for Loan Losses and Recorded Investment in Loan Receivables (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
In Thousands, unless otherwise specified
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Financing receivable, allowance for credit losses, individually evaluated for impairment	$1,423	$889	'	'
Financing receivable, allowance for credit losses, collectively evaluated for impairment	14,756	15,068	'	'
Loans and leases receivable, allowance	16,179	15,957	15,676	15,167
Loans acquired with deteriorated credit quality (loan pool participations)	2,134	2,134	'	'
Financing Receivable [Abstract]	'	'	'	'
Financing receivable, individually evaluated for impairment	13,460	11,394	'	'
Financing receivable, collectively evaluated for impairment	1,074,952	1,023,890	'	'
Loans and leases receivable, gross	1,088,412	1,035,284	'	'
Loans acquired with deteriorated credit quality (loan pool participations)	27,667	37,784	'	'
Agricultural Portfolio Segment [Member]	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Financing receivable, allowance for credit losses, individually evaluated for impairment	125	159	'	'
Financing receivable, allowance for credit losses, collectively evaluated for impairment	1,233	867	'	'
Loans and leases receivable, allowance	1,358	1,026	1,209	827
Loans acquired with deteriorated credit quality (loan pool participations)	3	4	'	'
Financing Receivable [Abstract]	'	'	'	'
Financing receivable, individually evaluated for impairment	3,146	3,323	'	'
Financing receivable, collectively evaluated for impairment	94,021	81,403	'	'
Loans and leases receivable, gross	97,167	84,726	'	'
Loans acquired with deteriorated credit quality (loan pool participations)	49	76	'	'
Commercial Portfolio Segment [Member]	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Financing receivable, allowance for credit losses, individually evaluated for impairment	559	295	'	'
Financing receivable, allowance for credit losses, collectively evaluated for impairment	4,421	4,304	'	'
Loans and leases receivable, allowance	4,980	4,599	5,380	4,540
Loans acquired with deteriorated credit quality (loan pool participations)	64	77	'	'
Financing Receivable [Abstract]	'	'	'	'
Financing receivable, individually evaluated for impairment	3,521	1,806	'	'
Financing receivable, collectively evaluated for impairment	260,130	236,810	'	'
Loans and leases receivable, gross	263,651	238,616	'	'
Loans acquired with deteriorated credit quality (loan pool participations)	1,302	2,379	'	'
Commercial Real Estate Portfolio Segment [Member]	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Financing receivable, allowance for credit losses, individually evaluated for impairment	513	293	'	'
Financing receivable, allowance for credit losses, collectively evaluated for impairment	4,781	5,474	'	'
Loans and leases receivable, allowance	5,294	5,767	5,171	5,255
Loans acquired with deteriorated credit quality (loan pool participations)	627	673	'	'
Financing Receivable [Abstract]	'	'	'	'
Financing receivable, individually evaluated for impairment	5,079	5,342	'	'
Financing receivable, collectively evaluated for impairment	429,345	434,642	'	'
Loans and leases receivable, gross	434,424	439,984	'	'
Loans acquired with deteriorated credit quality (loan pool participations)	18,168	24,346	'	'
Residential Portfolio Segment [Member]	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Financing receivable, allowance for credit losses, individually evaluated for impairment	220	136	'	'
Financing receivable, allowance for credit losses, collectively evaluated for impairment	2,965	2,871	'	'
Loans and leases receivable, allowance	3,185	3,007	3,501	2,776
Loans acquired with deteriorated credit quality (loan pool participations)	88	240	'	'
Financing Receivable [Abstract]	'	'	'	'
Financing receivable, individually evaluated for impairment	1,664	886	'	'
Financing receivable, collectively evaluated for impairment	272,462	251,990	'	'
Loans and leases receivable, gross	274,126	252,876	'	'
Loans acquired with deteriorated credit quality (loan pool participations)	3,823	4,788	'	'
Consumer Portfolio Segment [Member]	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Financing receivable, allowance for credit losses, individually evaluated for impairment	6	6	'	'
Financing receivable, allowance for credit losses, collectively evaluated for impairment	269	350	'	'
Loans and leases receivable, allowance	275	356	167	323
Loans acquired with deteriorated credit quality (loan pool participations)	6	15	'	'
Financing Receivable [Abstract]	'	'	'	'
Financing receivable, individually evaluated for impairment	50	37	'	'
Financing receivable, collectively evaluated for impairment	18,994	19,045	'	'
Loans and leases receivable, gross	19,044	19,082	'	'
Loans acquired with deteriorated credit quality (loan pool participations)	18	67	'	'
Unallocated Financing Receivables [Member]	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Financing receivable, allowance for credit losses, individually evaluated for impairment	'	'	'	'
Financing receivable, allowance for credit losses, collectively evaluated for impairment	1,087	1,202	'	'
Loans and leases receivable, allowance	1,087	1,202	248	1,446
Loans acquired with deteriorated credit quality (loan pool participations)	1,346	1,125	'	'
Financing Receivable [Abstract]	'	'	'	'
Financing receivable, individually evaluated for impairment	'	'	'	'
Financing receivable, collectively evaluated for impairment	'	'	'	'
Loans and leases receivable, gross	'	'	'	'
Loans acquired with deteriorated credit quality (loan pool participations)	$4,307	$6,128	'	'

Allowance_for_Loan_Loss_Activi

Allowance for Loan Loss Activity (Details) (USD $)	3 Months Ended								12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Beginning balance	'	'	'	$15,957	'	'	'	$15,676	$15,957	$15,676	$15,167
Charge-offs	'	'	'	'	'	'	'	'	1,807	3,101	3,801
Recoveries	'	'	'	'	'	'	'	'	679	1,003	960
Provision	300	250	600	200	650	575	575	579	1,350	2,379	3,350
Ending balance	16,179	'	'	'	15,957	'	'	'	16,179	15,957	15,676
Agricultural Portfolio Segment [Member]	'	'	'	'	'	'	'	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Beginning balance	'	'	'	1,026	'	'	'	1,209	1,026	1,209	827
Charge-offs	'	'	'	'	'	'	'	'	39	'	425
Recoveries	'	'	'	'	'	'	'	'	36	507	67
Provision	'	'	'	'	'	'	'	'	335	-690	740
Ending balance	1,358	'	'	'	1,026	'	'	'	1,358	1,026	1,209
Commercial Portfolio Segment [Member]	'	'	'	'	'	'	'	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Beginning balance	'	'	'	4,599	'	'	'	5,380	4,599	5,380	4,540
Charge-offs	'	'	'	'	'	'	'	'	790	2,345	1,440
Recoveries	'	'	'	'	'	'	'	'	70	423	573
Provision	'	'	'	'	'	'	'	'	1,101	1,141	1,707
Ending balance	4,980	'	'	'	4,599	'	'	'	4,980	4,599	5,380
Commercial Real Estate Portfolio Segment [Member]	'	'	'	'	'	'	'	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Beginning balance	'	'	'	5,767	'	'	'	5,171	5,767	5,171	5,255
Charge-offs	'	'	'	'	'	'	'	'	545	129	1,280
Recoveries	'	'	'	'	'	'	'	'	479	24	144
Provision	'	'	'	'	'	'	'	'	-407	701	1,052
Ending balance	5,294	'	'	'	5,767	'	'	'	5,294	5,767	5,171
Residential Portfolio Segment [Member]	'	'	'	'	'	'	'	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Beginning balance	'	'	'	3,007	'	'	'	3,501	3,007	3,501	2,776
Charge-offs	'	'	'	'	'	'	'	'	286	537	503
Recoveries	'	'	'	'	'	'	'	'	67	31	33
Provision	'	'	'	'	'	'	'	'	397	12	1,195
Ending balance	3,185	'	'	'	3,007	'	'	'	3,185	3,007	3,501
Consumer Portfolio Segment [Member]	'	'	'	'	'	'	'	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Beginning balance	'	'	'	356	'	'	'	167	356	167	323
Charge-offs	'	'	'	'	'	'	'	'	147	90	153
Recoveries	'	'	'	'	'	'	'	'	27	18	143
Provision	'	'	'	'	'	'	'	'	39	261	-146
Ending balance	275	'	'	'	356	'	'	'	275	356	167
Unallocated Financing Receivables [Member]	'	'	'	'	'	'	'	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Beginning balance	'	'	'	1,202	'	'	'	248	1,202	248	1,446
Charge-offs	'	'	'	'	'	'	'	'	'	'	'
Recoveries	'	'	'	'	'	'	'	'	'	'	'
Provision	'	'	'	'	'	'	'	'	-115	954	-1,198
Ending balance	$1,087	'	'	'	$1,202	'	'	'	$1,087	$1,202	$248

New_Troubled_Debt_Restructurin

New Troubled Debt Restructurings During Period (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
	count	count	count
Financing Receivable, Modifications [Line Items]	'	'	'
Financing receivable, modifications, number of contracts	16	4	9
Financing receivable, modifications, pre-modification recorded investment	$1,949	$3,161	$3,325
Financing receivable, modifications, post-modification recorded investment	1,933	3,077	2,802
Interest Rate Reduction [Member] | Commercial and Industrial Loan Financing Receivable [Member]	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'
Financing receivable, modifications, number of contracts	'	'	1
Financing receivable, modifications, pre-modification recorded investment	'	'	53
Financing receivable, modifications, post-modification recorded investment	'	'	53
Interest Rate Reduction [Member] | Commercial Real Estate Construction and Development Loan Financing Receivable [Member]	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'
Financing receivable, modifications, number of contracts	'	'	1
Financing receivable, modifications, pre-modification recorded investment	'	'	607
Financing receivable, modifications, post-modification recorded investment	'	'	80
Interest Rate Reduction [Member] | Farmland Loan Financing Receivable [Member]	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'
Financing receivable, modifications, number of contracts	'	2	'
Financing receivable, modifications, pre-modification recorded investment	'	2,475	'
Financing receivable, modifications, post-modification recorded investment	'	2,388	'
Interest Rate Reduction [Member] | Commercial Real Estate Loan Other Financing Receivable [Member]	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'
Financing receivable, modifications, number of contracts	'	'	6
Financing receivable, modifications, pre-modification recorded investment	'	'	2,471
Financing receivable, modifications, post-modification recorded investment	'	'	2,471
Interest Rate Reduction [Member] | Residential Real Estate First Lien Loan Financing Receivable [Member]	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'
Financing receivable, modifications, number of contracts	2	'	1
Financing receivable, modifications, pre-modification recorded investment	164	'	194
Financing receivable, modifications, post-modification recorded investment	169	'	198
Interest Rate Reduction [Member] | Residential Real Estate Junior Lien Loan Financing Receivable [Member]	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'
Financing receivable, modifications, number of contracts	1	1	'
Financing receivable, modifications, pre-modification recorded investment	8	135	'
Financing receivable, modifications, post-modification recorded investment	13	138	'
Amortization or Maturity Date Change [Member] | Commercial and Industrial Loan Financing Receivable [Member]	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'
Financing receivable, modifications, number of contracts	10	1	'
Financing receivable, modifications, pre-modification recorded investment	1,546	551	'
Financing receivable, modifications, post-modification recorded investment	1,546	551	'
Amortization or Maturity Date Change [Member] | Commercial Real Estate Loan Other Financing Receivable [Member]	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'
Financing receivable, modifications, number of contracts	2	'	'
Financing receivable, modifications, pre-modification recorded investment	165	'	'
Financing receivable, modifications, post-modification recorded investment	136	'	'
Amortization or Maturity Date Change [Member] | Residential Real Estate First Lien Loan Financing Receivable [Member]	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'
Financing receivable, modifications, number of contracts	1	'	'
Financing receivable, modifications, pre-modification recorded investment	66	'	'
Financing receivable, modifications, post-modification recorded investment	$69	'	'

New_Troubled_Debt_Restructurin1

New Troubled Debt Restructurings During Past Twelve Months That Defaulted During the Period (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
	count	count	count
Financing Receivable, Modifications [Line Items]	'	'	'
Financing receivable, modifications, subsequent default, number of contracts	2	1	5
Financing receivable, modifications, subsequent default, recorded investment	$180	$547	$1,388
Amortization or Maturity Date Change [Member] | Commercial and Industrial Loan Financing Receivable [Member]	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'
Financing receivable, modifications, subsequent default, number of contracts	'	1	'
Financing receivable, modifications, subsequent default, recorded investment	'	547	'
Amortization or Maturity Date Change [Member] | Commercial Real Estate Loan Other Financing Receivable [Member]	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'
Financing receivable, modifications, subsequent default, number of contracts	1	'	'
Financing receivable, modifications, subsequent default, recorded investment	69	'	'
Interest Rate Reduction [Member] | Commercial Real Estate Loan Other Financing Receivable [Member]	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'
Financing receivable, modifications, subsequent default, number of contracts	'	'	5
Financing receivable, modifications, subsequent default, recorded investment	'	'	1,388
Interest Rate Reduction [Member] | Residential Real Estate First Lien Loan Financing Receivable [Member]	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'
Financing receivable, modifications, subsequent default, number of contracts	1	'	'
Financing receivable, modifications, subsequent default, recorded investment	$111	'	'

Loans_by_Internally_Assigned_C

Loans by Internally Assigned Credit Quality Indicators (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing receivable, net	$1,088,412	$1,035,284
Agricultural Loan Financing Receivable [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing receivable, net	97,167	84,726
Commercial and Industrial Loan Financing Receivable [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing receivable, net	262,368	237,193
Commercial Credit Card Financing Receivable [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing receivable, net	1,028	1,001
Overdraft Deposit Account Financing Receivable [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing receivable, net	537	759
Commercial Real Estate Construction and Development Loan Financing Receivable [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing receivable, net	72,589	86,794
Farmland Loan Financing Receivable [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing receivable, net	85,475	81,063
Multifamily Real Estate Loan Financing Receivable [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing receivable, net	55,443	47,758
Commercial Real Estate Loan Other Financing Receivable [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing receivable, net	220,917	224,369
Commercial Real Estate Total [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing receivable, net	434,424	439,984
Residential Real Estate First Lien Loan Financing Receivable [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing receivable, net	220,668	197,742
Residential Real Estate Junior Lien Loan Financing Receivable [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing receivable, net	53,458	55,134
Residential Real Estate Total	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing receivable, net	274,126	252,876
Consumer Other Financing Receivable [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing receivable, net	18,762	18,745
Loans Aqcuired with Deteriorated Credit Quality Financing Receivable [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing receivable, net	27,667	37,784
Pass [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing receivable, net	1,015,076	962,696
Pass [Member] | Agricultural Loan Financing Receivable [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing receivable, net	93,187	80,657
Pass [Member] | Commercial and Industrial Loan Financing Receivable [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing receivable, net	239,485	211,344
Pass [Member] | Commercial Credit Card Financing Receivable [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing receivable, net	1,010	967
Pass [Member] | Overdraft Deposit Account Financing Receivable [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing receivable, net	326	452
Pass [Member] | Commercial Real Estate Construction and Development Loan Financing Receivable [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing receivable, net	56,112	72,916
Pass [Member] | Farmland Loan Financing Receivable [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing receivable, net	80,044	76,023
Pass [Member] | Multifamily Real Estate Loan Financing Receivable [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing receivable, net	53,315	46,272
Pass [Member] | Commercial Real Estate Loan Other Financing Receivable [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing receivable, net	205,914	209,143
Pass [Member] | Commercial Real Estate Total [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing receivable, net	395,385	404,354
Pass [Member] | Residential Real Estate First Lien Loan Financing Receivable [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing receivable, net	213,815	191,712
Pass [Member] | Residential Real Estate Junior Lien Loan Financing Receivable [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing receivable, net	53,225	54,606
Pass [Member] | Residential Real Estate Total	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing receivable, net	267,040	246,318
Pass [Member] | Consumer Other Financing Receivable [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing receivable, net	18,643	18,604
Pass [Member] | Loans Aqcuired with Deteriorated Credit Quality Financing Receivable [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing receivable, net	13,569	21,251
Special Mention [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing receivable, net	48,571	45,422
Special Mention [Member] | Agricultural Loan Financing Receivable [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing receivable, net	460	579
Special Mention [Member] | Commercial and Industrial Loan Financing Receivable [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing receivable, net	11,097	12,473
Special Mention [Member] | Commercial Credit Card Financing Receivable [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing receivable, net	1	4
Special Mention [Member] | Overdraft Deposit Account Financing Receivable [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing receivable, net	123	181
Special Mention [Member] | Commercial Real Estate Construction and Development Loan Financing Receivable [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing receivable, net	14,984	9,493
Special Mention [Member] | Farmland Loan Financing Receivable [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing receivable, net	3,091	2,684
Special Mention [Member] | Multifamily Real Estate Loan Financing Receivable [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing receivable, net	1,732	1,486
Special Mention [Member] | Commercial Real Estate Loan Other Financing Receivable [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing receivable, net	12,994	13,745
Special Mention [Member] | Commercial Real Estate Total [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing receivable, net	32,801	27,408
Special Mention [Member] | Residential Real Estate First Lien Loan Financing Receivable [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing receivable, net	3,994	4,478
Special Mention [Member] | Residential Real Estate Junior Lien Loan Financing Receivable [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing receivable, net	38	229
Special Mention [Member] | Residential Real Estate Total	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing receivable, net	4,032	4,707
Special Mention [Member] | Consumer Other Financing Receivable [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing receivable, net	57	70
Special Mention [Member] | Loans Aqcuired with Deteriorated Credit Quality Financing Receivable [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing receivable, net	'	'
Substandard [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing receivable, net	24,765	27,166
Substandard [Member] | Agricultural Loan Financing Receivable [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing receivable, net	3,520	3,490
Substandard [Member] | Commercial and Industrial Loan Financing Receivable [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing receivable, net	11,786	13,376
Substandard [Member] | Commercial Credit Card Financing Receivable [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing receivable, net	17	30
Substandard [Member] | Overdraft Deposit Account Financing Receivable [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing receivable, net	88	126
Substandard [Member] | Commercial Real Estate Construction and Development Loan Financing Receivable [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing receivable, net	1,493	4,385
Substandard [Member] | Farmland Loan Financing Receivable [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing receivable, net	2,340	2,356
Substandard [Member] | Multifamily Real Estate Loan Financing Receivable [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing receivable, net	396	'
Substandard [Member] | Commercial Real Estate Loan Other Financing Receivable [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing receivable, net	2,009	1,481
Substandard [Member] | Commercial Real Estate Total [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing receivable, net	6,238	8,222
Substandard [Member] | Residential Real Estate First Lien Loan Financing Receivable [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing receivable, net	2,859	1,552
Substandard [Member] | Residential Real Estate Junior Lien Loan Financing Receivable [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing receivable, net	195	299
Substandard [Member] | Residential Real Estate Total	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing receivable, net	3,054	1,851
Substandard [Member] | Consumer Other Financing Receivable [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing receivable, net	62	71
Substandard [Member] | Loans Aqcuired with Deteriorated Credit Quality Financing Receivable [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing receivable, net	14,093	16,518
Doubtful [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing receivable, net	'	'
Doubtful [Member] | Commercial Real Estate Total [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing receivable, net	'	'
Doubtful [Member] | Residential Real Estate Total	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing receivable, net	'	'
Unlikely to be Collected Financing Receivable [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing receivable, net	'	'
Unlikely to be Collected Financing Receivable [Member] | Commercial Real Estate Total [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing receivable, net	'	'
Unlikely to be Collected Financing Receivable [Member] | Residential Real Estate Total	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing receivable, net	'	'
Unlikely to be Collected Financing Receivable [Member] | Loans Aqcuired with Deteriorated Credit Quality Financing Receivable [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing receivable, net	$5	$15

Amounts_and_Categories_of_Impa

Amounts and Categories of Impaired Loans (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Financing Receivable, Impaired [Line Items]	'	'	'
Impaired financing receivable, with no related allowance, recorded investment	$4,888	$4,512	'
Impaired financing receivable, with no related allowance, unpaid principal balance	6,132	6,172	'
Impaired financing receivable, with related allowance, recorded investment	8,572	6,882	'
Impaired financing receivable, with related allowance, unpaid principal balance	8,992	7,032	'
Impaired financing receivable, related allowance	1,423	889	'
Impaired financing receivable, recorded investment	13,460	11,394	'
Impaired financing receivable, unpaid principal balance	15,124	13,204	'
Impaired financing receivable, with no related allowance, average recorded investment	4,727	4,936	11,245
Impaired financing receivable, with no related allowance, interest income, accrual method	259	199	295
Impaired financing receivable, with related allowance, average recorded investment	8,663	7,093	7,167
Impaired financing receivable, with related allowance, interest income, accrual method	332	285	263
Impaired financing receivable, average recorded investment	13,390	12,029	18,412
Impaired financing receivable, interest income, accrual method	591	484	558
Loans and leases receivable, impaired, commitment to lend	0	'	'
Agricultural Loan Financing Receivable [Member]	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
Impaired financing receivable, with no related allowance, recorded investment	1,475	1,600	'
Impaired financing receivable, with no related allowance, unpaid principal balance	1,975	2,100	'
Impaired financing receivable, with related allowance, recorded investment	1,671	1,723	'
Impaired financing receivable, with related allowance, unpaid principal balance	1,671	1,723	'
Impaired financing receivable, related allowance	125	159	'
Impaired financing receivable, recorded investment	3,146	3,323	'
Impaired financing receivable, unpaid principal balance	3,646	3,823	'
Impaired financing receivable, with no related allowance, average recorded investment	1,128	1,600	2,095
Impaired financing receivable, with no related allowance, interest income, accrual method	114	60	54
Impaired financing receivable, with related allowance, average recorded investment	1,681	1,723	1,866
Impaired financing receivable, with related allowance, interest income, accrual method	51	50	58
Impaired financing receivable, average recorded investment	2,809	3,323	3,961
Impaired financing receivable, interest income, accrual method	165	110	112
Commercial and Industrial Loan Financing Receivable [Member]	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
Impaired financing receivable, with no related allowance, recorded investment	1,919	775	'
Impaired financing receivable, with no related allowance, unpaid principal balance	2,020	1,524	'
Impaired financing receivable, with related allowance, recorded investment	1,602	1,031	'
Impaired financing receivable, with related allowance, unpaid principal balance	1,657	1,031	'
Impaired financing receivable, related allowance	559	295	'
Impaired financing receivable, recorded investment	3,521	1,806	'
Impaired financing receivable, unpaid principal balance	3,677	2,555	'
Impaired financing receivable, with no related allowance, average recorded investment	2,025	965	1,069
Impaired financing receivable, with no related allowance, interest income, accrual method	76	52	17
Impaired financing receivable, with related allowance, average recorded investment	1,697	1,044	1,392
Impaired financing receivable, with related allowance, interest income, accrual method	75	36	57
Impaired financing receivable, average recorded investment	3,722	2,009	2,461
Impaired financing receivable, interest income, accrual method	151	88	74
Commercial Credit Card Financing Receivable [Member]	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
Impaired financing receivable, related allowance	'	'	'
Impaired financing receivable, recorded investment	'	'	'
Impaired financing receivable, unpaid principal balance	'	'	'
Impaired financing receivable, with no related allowance, average recorded investment	'	'	'
Impaired financing receivable, with no related allowance, interest income, accrual method	'	'	'
Impaired financing receivable, with related allowance, average recorded investment	'	'	'
Impaired financing receivable, with related allowance, interest income, accrual method	'	'	'
Impaired financing receivable, average recorded investment	'	'	'
Impaired financing receivable, interest income, accrual method	'	'	'
Overdraft Deposit Account Financing Receivable [Member]	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
Impaired financing receivable, related allowance	'	'	'
Impaired financing receivable, recorded investment	'	'	'
Impaired financing receivable, unpaid principal balance	'	'	'
Impaired financing receivable, with no related allowance, average recorded investment	'	'	'
Impaired financing receivable, with no related allowance, interest income, accrual method	'	'	'
Impaired financing receivable, with related allowance, average recorded investment	'	'	'
Impaired financing receivable, with related allowance, interest income, accrual method	'	'	'
Impaired financing receivable, average recorded investment	'	'	'
Impaired financing receivable, interest income, accrual method	'	'	'
Commercial Real Estate Construction and Development Loan Financing Receivable [Member]	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
Impaired financing receivable, with no related allowance, recorded investment	132	149	'
Impaired financing receivable, with no related allowance, unpaid principal balance	601	299	'
Impaired financing receivable, with related allowance, recorded investment	7	525	'
Impaired financing receivable, with related allowance, unpaid principal balance	7	525	'
Impaired financing receivable, related allowance	3	105	'
Impaired financing receivable, recorded investment	139	674	'
Impaired financing receivable, unpaid principal balance	608	824	'
Impaired financing receivable, with no related allowance, average recorded investment	149	316	690
Impaired financing receivable, with no related allowance, interest income, accrual method	21	'	-15
Impaired financing receivable, with related allowance, average recorded investment	7	526	776
Impaired financing receivable, with related allowance, interest income, accrual method	'	30	26
Impaired financing receivable, average recorded investment	156	842	1,466
Impaired financing receivable, interest income, accrual method	21	30	11
Farmland Loan Financing Receivable [Member]	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
Impaired financing receivable, with no related allowance, recorded investment	93	75	'
Impaired financing receivable, with no related allowance, unpaid principal balance	107	88	'
Impaired financing receivable, with related allowance, recorded investment	2,311	2,316	'
Impaired financing receivable, with related allowance, unpaid principal balance	2,461	2,466	'
Impaired financing receivable, related allowance	219	47	'
Impaired financing receivable, recorded investment	2,404	2,391	'
Impaired financing receivable, unpaid principal balance	2,568	2,554	'
Impaired financing receivable, with no related allowance, average recorded investment	101	83	3,765
Impaired financing receivable, with no related allowance, interest income, accrual method	8	8	149
Impaired financing receivable, with related allowance, average recorded investment	2,315	2,504	329
Impaired financing receivable, with related allowance, interest income, accrual method	110	114	'
Impaired financing receivable, average recorded investment	2,416	2,587	4,094
Impaired financing receivable, interest income, accrual method	118	122	149
Multifamily Real Estate Loan Financing Receivable [Member]	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
Impaired financing receivable, related allowance	'	'	'
Impaired financing receivable, recorded investment	'	'	'
Impaired financing receivable, unpaid principal balance	'	'	'
Impaired financing receivable, with no related allowance, average recorded investment	'	'	'
Impaired financing receivable, with no related allowance, interest income, accrual method	'	'	'
Impaired financing receivable, with related allowance, average recorded investment	'	'	249
Impaired financing receivable, with related allowance, interest income, accrual method	'	'	18
Impaired financing receivable, average recorded investment	'	'	249
Impaired financing receivable, interest income, accrual method	'	'	18
Commercial Real Estate Loan Other Financing Receivable [Member]	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
Impaired financing receivable, with no related allowance, recorded investment	587	1,722	'
Impaired financing receivable, with no related allowance, unpaid principal balance	612	1,887	'
Impaired financing receivable, with related allowance, recorded investment	1,949	555	'
Impaired financing receivable, with related allowance, unpaid principal balance	2,164	555	'
Impaired financing receivable, related allowance	291	141	'
Impaired financing receivable, recorded investment	2,536	2,277	'
Impaired financing receivable, unpaid principal balance	2,776	2,442	'
Impaired financing receivable, with no related allowance, average recorded investment	593	1,770	2,263
Impaired financing receivable, with no related allowance, interest income, accrual method	25	72	69
Impaired financing receivable, with related allowance, average recorded investment	1,921	559	1,173
Impaired financing receivable, with related allowance, interest income, accrual method	55	18	64
Impaired financing receivable, average recorded investment	2,514	2,329	3,436
Impaired financing receivable, interest income, accrual method	80	90	133
Commercial Real Estate Total [Member]	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
Impaired financing receivable, with no related allowance, recorded investment	812	1,946	'
Impaired financing receivable, with no related allowance, unpaid principal balance	1,320	2,274	'
Impaired financing receivable, with related allowance, recorded investment	4,267	3,396	'
Impaired financing receivable, with related allowance, unpaid principal balance	4,632	3,546	'
Impaired financing receivable, related allowance	513	293	'
Impaired financing receivable, recorded investment	5,079	5,342	'
Impaired financing receivable, unpaid principal balance	5,952	5,820	'
Impaired financing receivable, with no related allowance, average recorded investment	843	2,169	6,718
Impaired financing receivable, with no related allowance, interest income, accrual method	54	80	203
Impaired financing receivable, with related allowance, average recorded investment	4,243	3,589	2,527
Impaired financing receivable, with related allowance, interest income, accrual method	165	162	108
Impaired financing receivable, average recorded investment	5,086	5,758	9,245
Impaired financing receivable, interest income, accrual method	219	242	311
Residential Real Estate First Lien Loan Financing Receivable [Member]	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
Impaired financing receivable, with no related allowance, recorded investment	622	136	'
Impaired financing receivable, with no related allowance, unpaid principal balance	741	203	'
Impaired financing receivable, with related allowance, recorded investment	902	642	'
Impaired financing receivable, with related allowance, unpaid principal balance	902	642	'
Impaired financing receivable, related allowance	170	89	'
Impaired financing receivable, recorded investment	1,524	778	'
Impaired financing receivable, unpaid principal balance	1,643	845	'
Impaired financing receivable, with no related allowance, average recorded investment	669	143	1,278
Impaired financing receivable, with no related allowance, interest income, accrual method	14	4	17
Impaired financing receivable, with related allowance, average recorded investment	909	645	1,256
Impaired financing receivable, with related allowance, interest income, accrual method	38	33	32
Impaired financing receivable, average recorded investment	1,578	788	2,534
Impaired financing receivable, interest income, accrual method	52	37	49
Residential Real Estate Junior Lien Loan Financing Receivable [Member]	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
Impaired financing receivable, with no related allowance, recorded investment	50	41	'
Impaired financing receivable, with no related allowance, unpaid principal balance	50	41	'
Impaired financing receivable, with related allowance, recorded investment	90	67	'
Impaired financing receivable, with related allowance, unpaid principal balance	90	67	'
Impaired financing receivable, related allowance	50	47	'
Impaired financing receivable, recorded investment	140	108	'
Impaired financing receivable, unpaid principal balance	140	108	'
Impaired financing receivable, with no related allowance, average recorded investment	50	43	70
Impaired financing receivable, with no related allowance, interest income, accrual method	1	3	2
Impaired financing receivable, with related allowance, average recorded investment	92	68	92
Impaired financing receivable, with related allowance, interest income, accrual method	1	2	5
Impaired financing receivable, average recorded investment	142	111	162
Impaired financing receivable, interest income, accrual method	2	5	7
Residential Real Estate Total	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
Impaired financing receivable, with no related allowance, recorded investment	672	177	'
Impaired financing receivable, with no related allowance, unpaid principal balance	791	244	'
Impaired financing receivable, with related allowance, recorded investment	992	709	'
Impaired financing receivable, with related allowance, unpaid principal balance	992	709	'
Impaired financing receivable, related allowance	220	136	'
Impaired financing receivable, recorded investment	1,664	886	'
Impaired financing receivable, unpaid principal balance	1,783	953	'
Impaired financing receivable, with no related allowance, average recorded investment	719	186	1,348
Impaired financing receivable, with no related allowance, interest income, accrual method	15	7	19
Impaired financing receivable, with related allowance, average recorded investment	1,001	713	1,348
Impaired financing receivable, with related allowance, interest income, accrual method	39	35	37
Impaired financing receivable, average recorded investment	1,720	899	2,696
Impaired financing receivable, interest income, accrual method	54	42	56
Consumer Other Financing Receivable [Member]	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
Impaired financing receivable, with no related allowance, recorded investment	10	14	'
Impaired financing receivable, with no related allowance, unpaid principal balance	26	30	'
Impaired financing receivable, with related allowance, recorded investment	40	23	'
Impaired financing receivable, with related allowance, unpaid principal balance	40	23	'
Impaired financing receivable, related allowance	6	6	'
Impaired financing receivable, recorded investment	50	37	'
Impaired financing receivable, unpaid principal balance	66	53	'
Impaired financing receivable, with no related allowance, average recorded investment	12	16	15
Impaired financing receivable, with no related allowance, interest income, accrual method	'	'	2
Impaired financing receivable, with related allowance, average recorded investment	41	24	34
Impaired financing receivable, with related allowance, interest income, accrual method	2	2	3
Impaired financing receivable, average recorded investment	53	40	49
Impaired financing receivable, interest income, accrual method	$2	$2	$5

Past_Due_Loan_Aging_Details

Past Due Loan Aging (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30 - 59 Days Past Due	$3,627	$4,324
60 - 89 Days Past Due	2,060	1,817
90 Days or More Past Due	4,463	611
Total Past Due	10,150	6,752
Current	1,078,262	1,028,532
Total Loans Receivable	1,088,412	1,035,284
90 Days Past Due and Still Accruing	1,385	572
Agricultural Loan Financing Receivable [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30 - 59 Days Past Due	65	96
60 - 89 Days Past Due	23	'
90 Days or More Past Due	52	'
Total Past Due	140	96
Current	97,027	84,630
Total Loans Receivable	97,167	84,726
90 Days Past Due and Still Accruing	'	'
Commercial and Industrial Loan Financing Receivable [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30 - 59 Days Past Due	610	289
60 - 89 Days Past Due	876	70
90 Days or More Past Due	960	85
Total Past Due	2,446	444
Current	259,922	236,749
Total Loans Receivable	262,368	237,193
90 Days Past Due and Still Accruing	213	85
Commercial Credit Card Financing Receivable [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30 - 59 Days Past Due	'	4
60 - 89 Days Past Due	1	'
90 Days or More Past Due	17	30
Total Past Due	18	34
Current	1,010	967
Total Loans Receivable	1,028	1,001
90 Days Past Due and Still Accruing	17	30
Overdraft Deposit Account Financing Receivable [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30 - 59 Days Past Due	40	82
60 - 89 Days Past Due	1	6
90 Days or More Past Due	48	39
Total Past Due	89	127
Current	448	632
Total Loans Receivable	537	759
90 Days Past Due and Still Accruing	'	'
Commercial Real Estate Construction and Development Loan Financing Receivable [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30 - 59 Days Past Due	84	448
60 - 89 Days Past Due	'	'
90 Days or More Past Due	56	'
Total Past Due	140	448
Current	72,449	86,346
Total Loans Receivable	72,589	86,794
90 Days Past Due and Still Accruing	'	'
Farmland Loan Financing Receivable [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30 - 59 Days Past Due	'	'
60 - 89 Days Past Due	'	'
90 Days or More Past Due	'	'
Total Past Due	'	'
Current	85,475	81,063
Total Loans Receivable	85,475	81,063
90 Days Past Due and Still Accruing	'	'
Multifamily Real Estate Loan Financing Receivable [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30 - 59 Days Past Due	'	'
60 - 89 Days Past Due	'	'
90 Days or More Past Due	395	'
Total Past Due	395	'
Current	55,048	47,758
Total Loans Receivable	55,443	47,758
90 Days Past Due and Still Accruing	395	'
Commercial Real Estate Loan Other Financing Receivable [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30 - 59 Days Past Due	604	892
60 - 89 Days Past Due	190	295
90 Days or More Past Due	1,740	67
Total Past Due	2,534	1,254
Current	218,383	223,115
Total Loans Receivable	220,917	224,369
90 Days Past Due and Still Accruing	164	67
Commercial Real Estate Total [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30 - 59 Days Past Due	688	1,340
60 - 89 Days Past Due	190	295
90 Days or More Past Due	2,191	67
Total Past Due	3,069	1,702
Current	431,355	438,282
Total Loans Receivable	434,424	439,984
90 Days Past Due and Still Accruing	559	67
Residential Real Estate First Lien Loan Financing Receivable [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30 - 59 Days Past Due	1,891	2,210
60 - 89 Days Past Due	869	1,185
90 Days or More Past Due	984	311
Total Past Due	3,744	3,706
Current	216,924	194,036
Total Loans Receivable	220,668	197,742
90 Days Past Due and Still Accruing	540	311
Residential Real Estate Junior Lien Loan Financing Receivable [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30 - 59 Days Past Due	316	233
60 - 89 Days Past Due	38	189
90 Days or More Past Due	175	75
Total Past Due	529	497
Current	52,929	54,637
Total Loans Receivable	53,458	55,134
90 Days Past Due and Still Accruing	49	75
Residential Real Estate Total	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30 - 59 Days Past Due	2,207	2,443
60 - 89 Days Past Due	907	1,374
90 Days or More Past Due	1,159	386
Total Past Due	4,273	4,203
Current	269,853	248,673
Total Loans Receivable	274,126	252,876
90 Days Past Due and Still Accruing	589	386
Consumer Other Financing Receivable [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30 - 59 Days Past Due	17	70
60 - 89 Days Past Due	62	72
90 Days or More Past Due	36	4
Total Past Due	115	146
Current	18,647	18,599
Total Loans Receivable	18,762	18,745
90 Days Past Due and Still Accruing	$7	$4

Nonaccrual_Loans_Details

Nonaccrual Loans (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Financing Receivable, Recorded Investment, Nonaccrual Status	$3,240	$2,938
Agricultural Loan Financing Receivable [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Financing Receivable, Recorded Investment, Nonaccrual Status	52	64
Commercial and Industrial Loan Financing Receivable [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Financing Receivable, Recorded Investment, Nonaccrual Status	746	757
Commercial Credit Card Financing Receivable [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Financing Receivable, Recorded Investment, Nonaccrual Status	'	'
Overdraft Deposit Account Financing Receivable [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Financing Receivable, Recorded Investment, Nonaccrual Status	'	'
Commercial Real Estate Construction and Development Loan Financing Receivable [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Financing Receivable, Recorded Investment, Nonaccrual Status	139	149
Farmland Loan Financing Receivable [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Financing Receivable, Recorded Investment, Nonaccrual Status	29	33
Multifamily Real Estate Loan Financing Receivable [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Financing Receivable, Recorded Investment, Nonaccrual Status	'	'
Commercial Real Estate Loan Other Financing Receivable [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Financing Receivable, Recorded Investment, Nonaccrual Status	1,576	1,128
Commercial Real Estate Total [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Financing Receivable, Recorded Investment, Nonaccrual Status	1,744	1,310
Residential Real Estate First Lien Loan Financing Receivable [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Financing Receivable, Recorded Investment, Nonaccrual Status	543	550
Residential Real Estate Junior Lien Loan Financing Receivable [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Financing Receivable, Recorded Investment, Nonaccrual Status	126	223
Residential Real Estate Total	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Financing Receivable, Recorded Investment, Nonaccrual Status	669	773
Consumer Other Financing Receivable [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Financing Receivable, Recorded Investment, Nonaccrual Status	$29	$34

Loans_Receivable_and_the_Allow3

Loans Receivable and the Allowance for Loan Losses Textual References (Details)	Dec. 31, 2013
	quarters
Financing Receivable, Allowance for Credit Losses [Line Items]	'
Allowance for Loan Losses, Unallocated Maximum Overage Percentage	15.00%
Allowance for Loan Losses, Unallocated Maximum Shortage Percentage	5.00%
Loans Reviewed Collectively for Impairment, Historical Loss Lookback, Number of Quarters	20
Special Mention Loans, Allowance for Loan Loss Pass Allocation Multiple	2
Substandard Loans, Allowance for Loan Loss Pass Allocation Multiple	6

Loan_Pool_Participations_Detai

Loan Pool Participations (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Loan Pool Participations [Abstract]	'	'
Balance at beginning of year	$35,650	$50,052
Principal payments	8,687	13,115
Net charge-offs	1,430	1,287
Balance at end of year	25,533	35,650
Loan pool participations, face value	$80,902	$105,299

Certain_Loans_Acquired_in_Tran

Certain Loans Acquired in Transfer Not Accounted for as Debt Securities (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities [Abstract]	'	'
Agricultural	'	'
Commercial	502	526
Real estate loans: [Abstract]	'	'
One- to four- family residential real estate,	229	341
Agricultural	'	51
Land development	'	'
Multifamily residences	'	363
Other commercial real estate	2,320	4,025
Total real estate	2,549	4,780
Total	3,051	5,306
Allowance	-48	-80
Carrying amount, net of allowance	$3,003	$5,226

Certain_Loans_Acquired_in_Tran1

Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward]	'	'
Balance at beginning of year	$2,627	$3,322
Additions	'	'
Accretions	-383	-641
Reclassifications to nonaccretable differences	'	-54
Balance at end of year	2,244	2,627
Cash flows expected to be collected at acquisition	8,128	11,507
Basis in acquired loans at acquisition	$4,638	$7,046

Loan_Pool_Participations_Textu

Loan Pool Participations Textual References (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified	count
Loan Pool Participations [Abstract]	'	'
Criteria to Apply ASC Topic 310, Number	6	'
Loan Pool Participations Less Than 90 Days Past Due, Percentage	66.00%	'
Loan Pool Participations 90 Days or More Past Due, Percentage	34.00%	'
Loan Pool Participations Not Subject to Accretable Yield, Face Value	$76.90	$98.30
Loan Pool Participations Receivable Not Subject to Accretable Yield, Gross Amount	$24.60	$32.50

Premises_and_Equipment_Details

Premises and Equipment (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Property, Plant and Equipment [Line Items]	'	'	'
Premises and equipment	$52,629	$49,422	'
Accumulated depreciation and amortization	24,947	23,813	'
Premises and equipment, net	27,682	25,609	'
Depreciation expense	2,400	2,300	2,500
Land	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'
Premises and equipment	4,836	4,841	'
Buildings and leasehold improvements	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'
Premises and equipment	30,287	30,182	'
Furniture and equipment	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'
Premises and equipment	$17,506	$14,399	'

Schedule_of_Intangible_Assets_

Schedule of Intangible Assets (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Schedule of Intangible Assets [Line Items]	'	'	'
Gross carrying amount	$14,123	$14,123	'
Accumulated amortization	5,317	4,654	'
Unamortized intangible assets	8,806	9,469	'
Impairment of intangible assets, indefinite-lived	0	0	0
Insurance agency intangible	'	'	'
Schedule of Intangible Assets [Line Items]	'	'	'
Finite-lived intangible asset, weighted average useful life	'8 years	'9 years	'
Gross carrying amount	1,320	1,320	'
Accumulated amortization	850	728	'
Unamortized intangible assets	470	592	'
Core deposit premium	'	'	'
Schedule of Intangible Assets [Line Items]	'	'	'
Finite-lived intangible asset, weighted average useful life	'5 years	'6 years	'
Gross carrying amount	5,433	5,433	'
Accumulated amortization	4,322	3,803	'
Unamortized intangible assets	1,111	1,630	'
Customer list intangible	'	'	'
Schedule of Intangible Assets [Line Items]	'	'	'
Finite-lived intangible asset, weighted average useful life	'10 years	'11 years	'
Gross carrying amount	330	330	'
Accumulated amortization	145	123	'
Unamortized intangible assets	185	207	'
Trade Names [Member]	'	'	'
Schedule of Intangible Assets [Line Items]	'	'	'
Gross carrying amount	7,040	7,040	'
Unamortized intangible assets	$7,040	$7,040	'

Schedule_of_FiniteLived_Intang

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense (Details) (USD $)	Dec. 31, 2013
In Thousands, unless otherwise specified
Finite-Lived Intangible Assets [Line Items]	'
Amortization expense, next twelve months	$547
Amortization expense, year two	431
Amortization expense, year three	314
Amortization expense, year four	197
Amortization expense, year five	81
Amortization expense, after year five	196
Total	1,766
Insurance agency intangible	'
Finite-Lived Intangible Assets [Line Items]	'
Amortization expense, next twelve months	105
Amortization expense, year two	89
Amortization expense, year three	72
Amortization expense, year four	55
Amortization expense, year five	38
Amortization expense, after year five	111
Total	470
Core deposit premium	'
Finite-Lived Intangible Assets [Line Items]	'
Amortization expense, next twelve months	420
Amortization expense, year two	321
Amortization expense, year three	222
Amortization expense, year four	123
Amortization expense, year five	25
Amortization expense, after year five	0
Total	1,111
Customer list intangible	'
Finite-Lived Intangible Assets [Line Items]	'
Amortization expense, next twelve months	22
Amortization expense, year two	21
Amortization expense, year three	20
Amortization expense, year four	19
Amortization expense, year five	18
Amortization expense, after year five	85
Total	$185

Other_Assets_Details

Other Assets (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Other Assets [Abstract]	'	'
Federal Home Loan Bank Stock	$9,226	$11,087
Prepaid expenses	1,030	5,211
Mortgage servicing rights	2,298	1,484
Accounts receivable & other miscellaneous assets	2,006	2,600
Total other assets	$14,560	$20,382

Loans_Serviced_for_Others_Deta

Loans Serviced for Others (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Components of Managed Servicing Portfolio [Abstract]	'	'
Loans serviced for others	$362.90	$358.40

Time_Deposits_Fiscal_Year_Matu

Time Deposits, Fiscal Year Maturity (Details) (USD $)	Dec. 31, 2013
In Thousands, unless otherwise specified
Time Deposits, Fiscal Year Maturity [Abstract]	'
2014	$306,354
2015	95,913
2016	38,237
2017	18,967
2018	5,850
Thereafter	30
Time Deposits	$465,351

Time_Deposits_Time_Deposit_Tex

Time Deposits Time Deposit Textual References (Details) (USD $)	Dec. 31, 2013
In Millions, unless otherwise specified
Time Deposits [Abstract]	'
Domestic time deposit, brokered	$12.90

Shortterm_Borrowings_Details

Short-term Borrowings (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Short-term Debt [Line Items]	'	'
Available-for-sale securities pledged as collateral	$202.80	$178.70
Federal Reserve Bank Advances [Member]	'	'
Short-term Debt [Line Items]	'	'
Short-term debt	0	0
Line of credit facility, maximum borrowing capacity	11.4	11.9
Available-for-sale securities pledged as collateral	12.7	'
Federal Funds Purchased [Member]	'	'
Short-term Debt [Line Items]	'	'
Short-term debt	5.5	0
Securities Sold under Agreements to Repurchase [Member]	'	'
Short-term Debt [Line Items]	'	'
Short-term debt	$61.20	$68.80
Short-term debt, weighted average interest rate	0.21%	0.30%

Federal_Home_Loan_Bank_Borrowi2

Federal Home Loan Bank Borrowings and Long-Term Debt (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Federal Home Loan Bank, Advances, Fiscal Year Maturity [Abstract]	'	'
Due in next twelve months	$39,900	$35,300
Callable quarterly, due in next twelve months	'	5,000	[1]
Due in year two	20,000	39,820
Due in year three	17,000	20,000
Due in year four	10,000	10,000
Due in year five	5,000	5,000
Due after year five	15,000	5,000
Total Federal Home Loan Bank borrowings	$106,900	$120,120
Maximum	'	'
Federal Home Loan Bank, Advances, Fiscal Year Maturity [Abstract]	'	'
Average interest rate of amounts due within one year	3.40%	5.97%
Average interest rate, due in one to two years	3.00%	3.40%
Average interest rate, due in two to three years	2.46%	3.00%
Average interest rate, due in three to four years	2.78%	2.46%
Average interest rate, due in four to five years	1.30%	2.78%
Average interest rate, due after five years	1.75%	1.75%
Minimum	'	'
Federal Home Loan Bank, Advances, Fiscal Year Maturity [Abstract]	'	'
Average interest rate of amounts due within one year	1.25%	0.84%
Average interest rate, due in one to two years	2.06%	1.25%
Average interest rate, due in two to three years	1.13%	2.06%
Average interest rate, due in three to four years	1.09%	1.42%
Average interest rate, due in four to five years	1.30%	2.78%
Average interest rate, due after five years	1.42%	1.75%
[1]	Callable quarterly.

Federal_Home_Loan_Bank_Borrowi3

Federal Home Loan Bank Borrowings and Long-Term Debt Textual References (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Debt Instrument [Line Items]	'	'	'
Interest Expense, Trust Preferred Securities	$296,000	$656,000	$657,000
Federal Home Loan Bank Advances [Member]	'	'	'
Debt Instrument [Line Items]	'	'	'
Federal Home Loan, Bank Advances General Debt Obligations, Disclosures Maximum Borrowing Capacity as Percentage of Total Assets	35.00%	'	'
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged	264,000,000	'	'
Junior Subordinated Debt [Member]	'	'	'
Debt Instrument [Line Items]	'	'	'
Debt Instrument, Face Amount	15,600,000	'	'
Debt Instrument, Maturity Date	15-Dec-37	'	'
Debt Instrument, Call Date, Earliest	15-Dec-12	'	'
Debt Instrument, Fixed Rate Amount	7,800,000	'	'
Debt Instrument, Fixed Rate End Date	'	15-Dec-12	'
Debt Instrument, Fixed Rate, Interest Rate Percentage	6.48%	'	'
Debt Instrument, Description of Variable Rate Basis	'three-month LIBOR	'	'
Debt Instrument, Basis Spread on Variable Rate	1.59%	'	'
Debt Instrument, Interest Rate at Period End	1.83%	'	'
Interest Expense, Trust Preferred Securities	$300,000	$700,000	'
Maximum | Junior Subordinated Debt [Member]	'	'	'
Debt Instrument [Line Items]	'	'	'
Debt Instrument, Interest Rate During Period	1.90%	'	'
Minimum | Junior Subordinated Debt [Member]	'	'	'
Debt Instrument [Line Items]	'	'	'
Debt Instrument, Interest Rate During Period	1.83%	'	'

Income_Tax_Components_Details

Income Tax Components (Details) (USD $)	3 Months Ended								12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Components of Income Tax Expense (Benefit), Continuing Operations [Abstract]	'	'	'	'	'	'	'	'	'	'	'
Current Federal tax expense	'	'	'	'	'	'	'	'	$6,841	$4,165	$4,147
Current State tax expense	'	'	'	'	'	'	'	'	1,259	1,103	851
Deferred income tax expense (benefit)	'	'	'	'	'	'	'	'	-1,454	-54	-389
Total income tax provision	$1,584	$1,668	$1,606	$1,788	$1,402	$1,451	$726	$1,635	$6,646	$5,214	$4,609

Income_Tax_Reconciliation_Deta

Income Tax Reconciliation (Details) (USD $)	3 Months Ended								12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Expense (Benefit), Continuing Operations, Income Tax Reconciliation [Abstract]	'	'	'	'	'	'	'	'	'	'	'
Expected provision	'	'	'	'	'	'	'	'	$8,839	$7,394	$6,093
Tax-exempt interest	'	'	'	'	'	'	'	'	-2,345	-2,213	-1,722
Bank-owned life insurance	'	'	'	'	'	'	'	'	-322	-323	-322
State income taxes, net of federal income tax benefit	'	'	'	'	'	'	'	'	776	723	604
Other	'	'	'	'	'	'	'	'	-302	-367	-44
Total income tax provision	$1,584	$1,668	$1,606	$1,788	$1,402	$1,451	$726	$1,635	$6,646	$5,214	$4,609
Effective Federal income tax rate	'	'	'	'	'	'	'	'	35.00%	34.00%	34.00%

Deferred_Tax_Assets_and_Liabil

Deferred Tax Assets and Liabilities (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Deferred Tax Assets, Gross [Abstract]	'	'
Allowance for loan losses	$7,753	$6,688
Deferred compensation	1,076	1,123
Net operating losses	3,089	2,894
Impairment losses on securities	2,613	2,812
Other real estate owned	767	268
Nonaccrual interest	434	387
Other	931	781
Gross deferred tax assets	16,663	14,953
Deferred Tax Liabilities, Gross [Abstract]	'	'
Premises and equipment depreciation and amortization	2,012	2,174
Federal Home Loan Bank stock	132	129
Purchase accounting adjustments	895	1,115
Mortgage servicing rights	871	548
Prepaid expenses	105	190
Unrealized gains on investment securities	620	6,584
Deferred loan fees	238	194
Other	315	163
Gross deferred tax liabilities	5,188	11,097
Net deferred income tax asset	11,475	3,856
Valuation allowance	3,281	3,080
Net deferred tax asset	$8,194	$776

Income_Taxes_Textual_Reference

Income Taxes Textual References (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2013
			Minimum	Maximum
			State and Local Jurisdiction [Member]	State and Local Jurisdiction [Member]
Operating Loss Carryforwards [Line Items]	'	'	'	'
Operating Loss Carryforwards	$35,100,000	'	'	'
Operating Loss Carryforwards, Expiration Dates	'	'	31-Dec-19	31-Dec-33
Unrecognized Tax Benefits	$0	$0	'	'

Employee_Benefit_Plans_Textual

Employee Benefit Plans Textual References (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Employee Benefit Plans [Abstract]	'	'	'
Defined benefit plan, cost of providing special or contractual termination benefits recognized during period	'	$6,100,000	'
Defined contribution plan, cost recognized	647,000	667,000	629,000
Employee stock ownership plan (ESOP), compensation expense	609,000	635,000	534,000
Salary continuation plan cost recognized	350,000	359,000	372,000
Cash surrender value of life insurance, salary continuation plans	$13,900,000	$13,500,000	$13,000,000

Stock_Compensation_Plans_Detai

Stock Compensation Plans (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Share-based compensation, number of shares authorized	750,000	'	'
Share-based compensation, number of shares available for grant	514,191	496,614	'
Share-based compensation expense	$384,000	$266,000	$220,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]	'	'	'
Exercised	-56,314	-55,986	-6,832
Share-based Compensation Arrangement by Share-based Payment Award, Options, Intrinsic Value Cash Received and Tax Benefits Realized [Abstract]	'	'	'
Share-based compensation, options exercises in period, total intrinsic value	362,000	278,000	22,000
Share-based compensation, cash received from exercise of stock options	320,000	'	'
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized [Abstract]	'	'	'
Share-based compensation, nonvested stock options, compensation cost not yet recognized	0	'	'
Restricted Stock Units (RSUs) [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Share-based compensation expense	380,000	234,000	171,000
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized [Abstract]	'	'	'
Share-based compensation, nonvested awards, period for recognition of unrecognized compensation cost	'2 years 5 months	'	'
Share-based compensation, nonvested awards other than options, compensation cost not yet recognized	594,000	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options Grant Date Fair Value [Abstract]	'	'	'
Share-based compensation, other than options, fair value of equity instruments vested in period	533,000	324,000	153,000
Stock Options [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Share-based compensation expense	4,000	32,000	49,000
Share-based compensation, description	' The stock options have a maximum term of ten years, an exercise price equal to the fair market value of a share of stock on the date of grant and vest 25% per year	'	'
Share-based compensation, award vesting period	'4 years	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Options, Intrinsic Value Cash Received and Tax Benefits Realized [Abstract]	'	'	'
Share-based compensation, tax benefit from compensation expense	37,000	'	'
2008 Equity Incentive Plan [Member] | Restricted Stock Units (RSUs) [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]	'	'	'
Nonvested at December 31, 2012	52,112	'	'
Granted	21,700	'	'
Vested	-19,585	'	'
Forfeited	-1,830	'	'
Nonvested at December 31, 2013	52,397	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]	'	'	'
Nonvested at December 31, 2012	$8.17	'	'
Granted	$23.10	'	'
Vested	$12.84	'	'
Forfeited	$20.10	'	'
Nonvested at December 31, 2013	$18.24	'	'
2008 Equity Incentive Plan [Member] | Stock Options [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]	'	'	'
Outstanding at December 31, 2012	107,476	'	'
Granted	0	'	'
Exercised	-56,314	'	'
Forfeited	0	'	'
Expired	-3,572	'	'
Outstanding at December 31, 2013	47,590	'	'
Exercisable at December 31, 2013	47,590	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]	'	'	'
Outstanding at December 31, 2012	$17.55	'	'
Granted	$0	'	'
Exercised	$19	'	'
Forfeited	$0	'	'
Expired	$20.03	'	'
Outstanding at December 31, 2013	$15.66	'	'
Exercisable at December 31, 2013	$15.66	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]	'	'	'
Share-based compensation, options outstanding weighted average remaining contractual term	'3 years 4 months 3 days	'	'
Share-based compensation, options, exercisable weighted average remaining contractual term	'3 years 4 months 3 days	'	'
Share-based compensation, options outstanding intrinsic value	549,000	'	'
Share-based compensation options exercisable intrinsic value	$549,000	'	'
Management [Member] | Restricted Stock Units (RSUs) [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Share-based compensation, description	'Each restricted stock unit entitles the recipient to receive one share of stock on the vesting date. Generally, for employee awards, the restricted stock units vest 25% per year	'	'
Share-based compensation, award vesting period	'4 years	'	'
Before May 15, 2013 [Member] | Director [Member] | Restricted Stock Units (RSUs) [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Share-based compensation, award vesting period	'4 years	'	'
May 15, 2013 or After [Member] | Director [Member] | Restricted Stock Units (RSUs) [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Share-based compensation, award vesting period	'1 year	'	'

Earnings_Per_Common_Share_Deta

Earnings Per Common Share (Details) (USD $)	3 Months Ended								12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Net income	$4,422	$4,864	$4,531	$4,790	$4,352	$4,238	$3,512	$4,432	$18,607	$16,534	$13,311
Preferred stock dividends and discount accretion	'	'	'	'	'	'	'	'	'	'	645
Net income available to common shareholders	'	'	'	'	'	'	'	'	$18,607	$16,534	$12,666
Basic earnings per common share	$0.52	$0.57	$0.54	$0.56	$0.51	$0.50	$0.42	$0.52	$2.19	$1.95	$1.47
Diluted earnings per common share	$0.52	$0.57	$0.53	$0.56	$0.51	$0.50	$0.41	$0.52	$2.18	$1.94	$1.47
Common Stock [Member]	'	'	'	'	'	'	'	'	'	'	'
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Weighted average shares outstanding	'	'	'	'	'	'	'	'	8,477,904	8,485,008	8,604,872
Weighted average shares outstanding, included all dilutive potential shares	'	'	'	'	'	'	'	'	8,525,119	8,527,544	8,632,856

Regulatory_Capital_Requirement2

Regulatory Capital Requirements and Restrictions on Subsidiary Cash (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Regulatory Capital Requirements [Abstract]	'	'
Required cash reserve	$1,600	$1,594
MidWestOne Financial Group [Member]	'	'
Regulatory Capital Requirements [Abstract]	'	'
Total capital	200,714	185,557
Tier one capital	183,361	168,729
Total capital to risk weighted assets	14.62%	13.80%
Tier one risk based capital to risk weighted assets	13.36%	12.56%
Tier one leverage capital to average assets	10.55%	9.65%
Capital required for capital adequacy	109,812	107,456
Tier one risk based capital required for capital adequacy	54,906	53,728
Tier one leverage capital required for capital adequacy	69,491	69,932
Capital required for capital adequacy to risk weighted assets	8.00%	8.00%
Tier one risk based capital required for capital adequacy to Risk Weighted Assets	4.00%	4.00%
Tier one leverage capital required for capital adequacy to average assets	4.00%	4.00%
MidWestOne Bank [Member]	'	'
Regulatory Capital Requirements [Abstract]	'	'
Total capital	183,646	166,949
Tier one capital	166,612	150,304
Total capital to risk weighted assets	13.49%	12.55%
Tier one risk based capital to risk weighted assets	12.24%	11.30%
Tier one leverage capital to average assets	9.65%	8.66%
Capital required for capital adequacy	108,903	106,398
Tier one risk based capital required for capital adequacy	54,451	53,199
Tier one leverage capital required for capital adequacy	69,063	69,386
Capital required for capital adequacy to risk weighted assets	8.00%	8.00%
Tier one risk based capital required for capital adequacy to Risk Weighted Assets	4.00%	4.00%
Tier one leverage capital required for capital adequacy to average assets	4.00%	4.00%
Capital required to be well capitalized	136,128	132,998
Tier one risk based capital required to be well capitalized	81,677	79,799
Tier one leverage capital required to be well capitalized	$86,329	$86,733
Capital required to be well capitalized to risk weighted assets	10.00%	10.00%
Tier one risk based capital required to be well capitalized to risk weighted assets	6.00%	6.00%
Tier one leverage capital required to be well capitalized to average assets	5.00%	5.00%

Commitments_and_Contingencies_1

Commitments and Contingencies (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Credit Commitments [Line Items]	'	'
Loans receivable, commitment to lend	$268,735	$293,008
Commitments to sell loans held for sale	357	1,195
Commitments to extend credit	'	'
Credit Commitments [Line Items]	'	'
Loans receivable, commitment to lend	263,887	287,194
Standby letters of credit	'	'
Credit Commitments [Line Items]	'	'
Loans receivable, commitment to lend	$4,491	$4,619

Commitments_and_Contingencies_2

Commitments and Contingencies Textual References (Details) (USD $)	12 Months Ended			12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2013
		Standby letters of credit	Standby letters of credit	State and political subdivisions	Geographic Concentration Risk [Member]	Accounts Receivable [Member]	Accounts Receivable [Member]
					State and political subdivisions	Agricultural Related Loan Financing Receivable [Member]	Commercial Real Estate Portfolio Segment [Member]
Concentration Risk [Line Items]	'	'	'	'	'	'	'
Loss contingency accrual	'	$0.20	$0.20	'	'	'	'
Concentration risk, percentage	'	'	'	'	'	17.00%	65.00%
Concentration risk, additional characteristic	'Iowa	'	'	'	'	'	'
Concentration risk, credit risk, financial instrument maximum exposure	'	'	'	$5	$140	'	'

Related_Party_Transactions_Det

Related Party Transactions (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Loans and Leases Receivable, Related Parties [Roll Forward]	'	'
Balance, beginning	$21,935	$20,861
Net decrease due to change in related parties	-150	-102
Advances	2,310	5,387
Collections	-1,703	-4,211
Balance, ending	$22,392	$21,935

Related_Party_Transactions_Tex

Related Party Transactions Textual References (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Related Party Transaction [Line Items]	'	'
Related party deposit liabilities	$7,300,000	$9,900,000
Description of related party transaction	'The Company has from time to time engaged Neumann Monson, P.C. (“Neumann Monson”), an architectural services firm headquartered in Iowa City for which Kevin Monson, Chairman of the Company, is President, Managing Partner and majority owner, to perform architectural and design services with respect to the Company's offices.	'
Amount of related party transaction	$2,289,000	'

Fair_Value_Financial_Assets_an

Fair Value Financial Assets and Liabilities Measured on a Recurring Basis (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified	count
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Investment in Collateralized Debt Obligations, Number of Securities	5	'
Available for sale	$498,561	$557,541
Mortgage servicing rights	2,298	1,484
Fair Value, Inputs, Level 1 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available for sale	3,057	1,681
Fair Value, Inputs, Level 2 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available for sale	494,187	555,105
Fair Value, Inputs, Level 3 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available for sale	1,317	755
Fair Value, Measurements, Recurring [Member] | Estimated Fair Value	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available for sale	498,561	557,541
Mortgage servicing rights	2,298	1,484
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available for sale	3,057	1,681
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available for sale	494,187	555,105
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available for sale	1,317	755
Mortgage servicing rights	2,298	1,484
U.S. Government agencies and corporations	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available for sale	44,939	69,783
U.S. Government agencies and corporations | Fair Value, Measurements, Recurring [Member] | Estimated Fair Value	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available for sale	44,939	69,783
U.S. Government agencies and corporations | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available for sale	44,939	69,783
State and political subdivisions	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available for sale	210,796	218,019
State and political subdivisions | Fair Value, Measurements, Recurring [Member] | Estimated Fair Value	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available for sale	210,796	218,019
State and political subdivisions | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available for sale	210,796	218,019
Mortgage-backed securities	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available for sale	39,285	59,259
Mortgage-backed securities | Fair Value, Measurements, Recurring [Member] | Estimated Fair Value	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available for sale	39,285	59,256
Mortgage-backed securities | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available for sale	39,285	59,256
Collateralized mortgage obligations	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available for sale	169,223	183,859
Collateralized mortgage obligations | Fair Value, Measurements, Recurring [Member] | Estimated Fair Value	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available for sale	169,223	183,862
Collateralized mortgage obligations | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available for sale	169,223	183,862
Corporate debt securities	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available for sale	29,944	24,185
Corporate debt securities | Fair Value, Measurements, Recurring [Member] | Estimated Fair Value	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available for sale	29,944	24,185
Corporate debt securities | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available for sale	29,944	24,185
Collateralized debt obligations	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available for sale	1,317	755
Collateralized debt obligations | Fair Value, Measurements, Recurring [Member] | Estimated Fair Value	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available for sale	1,317	755
Collateralized debt obligations | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available for sale	1,317	755
Total debt securities	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available for sale	495,504	555,860
Total debt securities | Fair Value, Measurements, Recurring [Member] | Estimated Fair Value	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available for sale	495,504	555,860
Total debt securities | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available for sale	'	'
Total debt securities | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available for sale	494,187	555,105
Total debt securities | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available for sale	1,317	755
Equity securities	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available for sale	3,057	1,681
Equity securities | Fair Value, Measurements, Recurring [Member] | Estimated Fair Value	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available for sale	3,057	1,681
Equity securities | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available for sale	3,057	1,681
Equity securities | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available for sale	'	'

Fair_Value_Assets_Measured_on_

Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation by Asset Class (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Mortgage servicing rights	'	'
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]	'	'
Beginning balance	$1,484	$1,265
Transfers into Level 3	'	'
Transfers out of Level 3	'	'
Total gains (losses):	'	'
Included in earnings	293	-500
Included in other comprehensive income	'	'
Purchases, issuances, sales, and settlements:	'	'
Purchases	'	'
Issuances	521	719
Sales	'	'
Settlements	'	'
Ending Balance	2,298	1,484
Collateralized debt obligations	'	'
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]	'	'
Beginning balance	755	806
Transfers into Level 3	'	'
Transfers out of Level 3	'	'
Total gains (losses):	'	'
Included in earnings	-18	-345
Included in other comprehensive income	822	294
Purchases, issuances, sales, and settlements:	'	'
Purchases	'	'
Issuances	'	'
Sales	'	'
Settlements	-242	'
Ending Balance	$1,317	$755

Fair_Value_Assets_Measure_on_R

Fair Value, Assets Measure on Recurring Basis, Unobservable Inputs,Gain (Loss) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Mortgage servicing rights	'	'
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]	'	'
Fair value, assets measured on recurring basis, gain (loss) included in earnings	$814	$219
Change in unrealized losses for the period included in comprehensive net income	'	'
Collateralized debt obligations	'	'
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]	'	'
Fair value, assets measured on recurring basis, gain (loss) included in earnings	-18	-345
Change in unrealized losses for the period included in comprehensive net income	$822	$294

Fair_Value_Assets_and_Liabilit

Fair Value Assets and Liabilities Measured on a Nonrecurring Basis (Details) (Fair Value, Measurements, Nonrecurring [Member], USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Estimated Fair Value	'	'
Collateral dependent impaired loans:	'	'
Agricultural Loans-Collateral Dependent	'	'
Commercial and industrial	1,043	1,106
Commercial Credit Cards-Collateral Dependent	'	'
Overdrafts-Collateral Dependent	'	'
Construction and development	136	496
Farmland Loans-Collateral Dependent	65	'
Multifamily Real Estate Loans-Collateral Dependent	'	'
Commercial real estate-other	1,786	501
Total commercial real estate	1,987	997
One- to four- family first liens	186	114
One- to four- family junior liens	30	19
Total residential real estate	216	133
Consumer	44	32
Collateral dependent impaired loans	3,290	2,268
Other real estate owned	1,770	3,278
Fair Value, Inputs, Level 1 [Member]	'	'
Collateral dependent impaired loans:	'	'
Commercial Credit Cards-Collateral Dependent	'	'
Overdrafts-Collateral Dependent	'	'
Total commercial real estate	'	'
Total residential real estate	'	'
Collateral dependent impaired loans	'	'
Fair Value, Inputs, Level 2 [Member]	'	'
Collateral dependent impaired loans:	'	'
Commercial Credit Cards-Collateral Dependent	'	'
Overdrafts-Collateral Dependent	'	'
Total commercial real estate	'	'
Total residential real estate	'	'
Collateral dependent impaired loans	'	'
Fair Value, Inputs, Level 3 [Member]	'	'
Collateral dependent impaired loans:	'	'
Commercial and industrial	1,043	1,106
Commercial Credit Cards-Collateral Dependent	'	'
Overdrafts-Collateral Dependent	'	'
Construction and development	136	496
Farmland Loans-Collateral Dependent	65	'
Commercial real estate-other	1,786	501
Total commercial real estate	1,987	997
One- to four- family first liens	186	114
One- to four- family junior liens	30	19
Total residential real estate	216	133
Consumer	44	32
Collateral dependent impaired loans	3,290	2,268
Other real estate owned	$1,770	$3,278

Fair_Value_of_Financial_Instru

Fair Value of Financial Instruments (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Investment securities:	'	'
Available for sale	$498,561	$557,541
Held to maturity	32,625	32,669
Loans held for sale	357	1,195
Residential real estate:	'	'
Loan pool participations, net	25,533	35,650
Accrued interest receivable	10,409	10,292
Federal Home Loan Bank Stock	9,226	11,087
Deposits:	'	'
Non-interest-bearing demand	222,359	190,491
Interest-bearing checking	592,673	582,283
Savings	94,559	91,603
Certificates of deposit under $100,000	256,283	312,489
Certificates of deposit $100,000 and over	209,068	222,867
Total deposits	1,374,942	1,399,733
Federal Home Loan Bank borrowings	106,900	120,120
Long-term debt	15,464	15,464
Accrued interest payable	765	1,475
Carrying Amount	'	'
Financial assets:	'	'
Cash and cash equivalents	24,890	47,191
Investment securities:	'	'
Available for sale	498,561	557,541
Held to maturity	32,625	32,669
Total investment securities	531,186	590,210
Loans held for sale	357	1,195
Loans, net:	'	'
Agricultural	95,712	83,602
Commercial and industrial	257,153	232,337
Credit cards	998	982
Overdrafts	415	562
Commercial real estate:	'	'
Construction and development	71,433	84,645
Farmland	84,387	80,425
Multifamily	54,883	47,407
Commercial real estate-other	217,993	221,229
Total commercial real estate	428,696	433,706
Residential real estate:	'	'
One- to four- family first liens	217,765	195,126
One- to four- family junior liens	52,903	54,449
Total residential real estate	270,668	249,575
Consumer	18,591	18,563
Total loans, net	1,072,233	1,019,327
Loan pool participations, net	25,533	35,650
Accrued interest receivable	10,409	10,292
Federal Home Loan Bank Stock	9,226	11,087
Deposits:	'	'
Non-interest-bearing demand	222,359	190,491
Interest-bearing checking	592,673	582,283
Savings	94,559	91,603
Certificates of deposit under $100,000	256,283	312,489
Certificates of deposit $100,000 and over	209,068	222,867
Total deposits	1,374,942	1,399,733
Federal funds purchased and securities sold under agreements to repurchase	66,665	68,823
Federal Home Loan Bank borrowings	106,900	120,120
Long-term debt	15,464	15,464
Accrued interest payable	765	1,475
Estimated Fair Value	'	'
Financial assets:	'	'
Cash and cash equivalents	24,890	47,191
Investment securities:	'	'
Available for sale	498,561	557,541
Held to maturity	30,191	32,920
Total investment securities	528,752	590,461
Loans held for sale	367	1,224
Loans, net:	'	'
Agricultural	95,609	83,180
Commercial and industrial	256,257	230,615
Credit cards	998	982
Overdrafts	415	562
Commercial real estate:	'	'
Construction and development	71,569	84,335
Farmland	85,058	79,931
Multifamily	54,953	47,450
Commercial real estate-other	219,213	222,421
Total commercial real estate	430,793	434,137
Residential real estate:	'	'
One- to four- family first liens	218,257	193,906
One- to four- family junior liens	53,798	54,808
Total residential real estate	272,055	248,714
Consumer	18,638	18,631
Total loans, net	1,074,765	1,016,821
Loan pool participations, net	25,533	35,650
Accrued interest receivable	10,409	10,292
Federal Home Loan Bank Stock	9,226	11,087
Deposits:	'	'
Non-interest-bearing demand	222,359	190,491
Interest-bearing checking	592,673	582,283
Savings	94,559	91,603
Certificates of deposit under $100,000	256,549	314,978
Certificates of deposit $100,000 and over	209,543	224,311
Total deposits	1,375,683	1,403,666
Federal funds purchased and securities sold under agreements to repurchase	66,665	68,823
Federal Home Loan Bank borrowings	107,356	123,202
Long-term debt	9,872	9,939
Accrued interest payable	765	1,475
Fair Value, Inputs, Level 1 [Member]	'	'
Financial assets:	'	'
Cash and cash equivalents	24,890	47,191
Investment securities:	'	'
Available for sale	3,057	1,681
Total investment securities	3,057	1,681
Commercial real estate:	'	'
Total commercial real estate	'	'
Residential real estate:	'	'
Total residential real estate	'	'
Total loans, net	'	'
Accrued interest receivable	10,409	10,292
Deposits:	'	'
Non-interest-bearing demand	222,359	190,491
Interest-bearing checking	592,673	582,283
Savings	94,559	91,603
Total deposits	909,591	864,377
Federal funds purchased and securities sold under agreements to repurchase	66,665	68,823
Accrued interest payable	765	1,475
Fair Value, Inputs, Level 2 [Member]	'	'
Investment securities:	'	'
Available for sale	494,187	555,105
Held to maturity	30,191	32,920
Total investment securities	524,378	588,025
Commercial real estate:	'	'
Total commercial real estate	'	'
Residential real estate:	'	'
Total residential real estate	'	'
Total loans, net	'	'
Federal Home Loan Bank Stock	9,226	11,087
Deposits:	'	'
Certificates of deposit under $100,000	256,549	314,978
Certificates of deposit $100,000 and over	209,543	224,311
Total deposits	466,092	539,289
Fair Value, Inputs, Level 3 [Member]	'	'
Investment securities:	'	'
Available for sale	1,317	755
Total investment securities	1,317	755
Loans held for sale	367	1,224
Loans, net:	'	'
Agricultural	95,609	83,180
Commercial and industrial	256,257	230,615
Credit cards	998	982
Overdrafts	415	562
Commercial real estate:	'	'
Construction and development	71,569	84,335
Farmland	85,058	79,931
Multifamily	54,953	47,450
Commercial real estate-other	219,213	222,421
Total commercial real estate	430,793	434,137
Residential real estate:	'	'
One- to four- family first liens	218,257	193,906
One- to four- family junior liens	53,798	54,808
Total residential real estate	272,055	248,714
Consumer	18,638	18,631
Total loans, net	1,074,765	1,016,821
Loan pool participations, net	25,533	35,650
Deposits:	'	'
Total deposits	'	'
Federal Home Loan Bank borrowings	107,356	123,202
Long-term debt	$9,872	$9,939

Fair_Value_Unobservable_Inputs

Fair Value, Unobservable Inputs Valuation Techniques (Details) (USD $)

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

In Thousands, unless otherwise specified

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Nonrecurring [Member]

Fair Value, Measurements, Nonrecurring [Member]

Fair Value, Measurements, Nonrecurring [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 3 [Member]

Collateralized debt obligations

Collateralized debt obligations

Collateralized debt obligations

Mortgage servicing rights

Mortgage servicing rights

Mortgage servicing rights

Other real estate owned

Other real estate owned

Other real estate owned

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Nonrecurring [Member]

Fair Value, Measurements, Nonrecurring [Member]

Fair Value, Measurements, Nonrecurring [Member]

Fair Value, Measurements, Nonrecurring [Member]

Fair Value, Measurements, Nonrecurring [Member]

Fair Value, Measurements, Nonrecurring [Member]

Fair Value, Measurements, Nonrecurring [Member]

Fair Value, Measurements, Nonrecurring [Member]

Fair Value, Measurements, Nonrecurring [Member]

Fair Value, Measurements, Nonrecurring [Member]

Fair Value, Measurements, Nonrecurring [Member]

Fair Value, Measurements, Nonrecurring [Member]

Fair Value, Measurements, Nonrecurring [Member]

Fair Value, Measurements, Nonrecurring [Member]

Fair Value, Measurements, Nonrecurring [Member]

Fair Value, Measurements, Nonrecurring [Member]

Fair Value, Measurements, Nonrecurring [Member]

Fair Value, Measurements, Nonrecurring [Member]

Fair Value, Measurements, Nonrecurring [Member]

Fair Value, Measurements, Nonrecurring [Member]

Fair Value, Measurements, Nonrecurring [Member]

Fair Value, Measurements, Nonrecurring [Member]

Fair Value, Measurements, Nonrecurring [Member]

Discounted Cash Flow [Member]

Discounted Cash Flow [Member]

Discounted Cash Flow [Member]

Discounted Cash Flow [Member]

Discounted Cash Flow [Member]

Discounted Cash Flow [Member]

Modified Appraised Value [Member]

Modified Appraised Value [Member]

Modified Appraised Value [Member]

Mortgage servicing rights

Commercial and Industrial Loan Financing Receivable [Member]

Commercial and Industrial Loan Financing Receivable [Member]

Commercial and Industrial Loan Financing Receivable [Member]

Commercial Real Estate Construction and Development Loan Financing Receivable [Member]

Commercial Real Estate Construction and Development Loan Financing Receivable [Member]

Commercial Real Estate Construction and Development Loan Financing Receivable [Member]

Farmland Loan Financing Receivable [Member]

Farmland Loan Financing Receivable [Member]

Farmland Loan Financing Receivable [Member]

Commercial Real Estate Loan Other Financing Receivable [Member]

Commercial Real Estate Loan Other Financing Receivable [Member]

Commercial Real Estate Loan Other Financing Receivable [Member]

Residential Real Estate First Lien Loan Financing Receivable [Member]

Residential Real Estate First Lien Loan Financing Receivable [Member]

Residential Real Estate First Lien Loan Financing Receivable [Member]

Residential Real Estate Junior Lien Loan Financing Receivable [Member]

Residential Real Estate Junior Lien Loan Financing Receivable [Member]

Residential Real Estate Junior Lien Loan Financing Receivable [Member]

Consumer Other Financing Receivable [Member]

Consumer Other Financing Receivable [Member]

Consumer Other Financing Receivable [Member]

Minimum

Maximum

Weighted Average [Member]

Minimum

Maximum

Weighted Average [Member]

Minimum

Maximum

Weighted Average [Member]

Modified Appraised Value [Member]

Modified Appraised Value [Member]

Modified Appraised Value [Member]

Modified Appraised Value [Member]

Modified Appraised Value [Member]

Modified Appraised Value [Member]

Modified Appraised Value [Member]

Modified Appraised Value [Member]

Modified Appraised Value [Member]

Modified Appraised Value [Member]

Modified Appraised Value [Member]

Modified Appraised Value [Member]

Modified Appraised Value [Member]

Modified Appraised Value [Member]

Modified Appraised Value [Member]

Modified Appraised Value [Member]

Modified Appraised Value [Member]

Modified Appraised Value [Member]

Modified Appraised Value [Member]

Modified Appraised Value [Member]

Modified Appraised Value [Member]

Minimum

Maximum

Weighted Average [Member]

Minimum

Maximum

Weighted Average [Member]

Minimum

Maximum

Weighted Average [Member]

Minimum

Maximum

Weighted Average [Member]

Minimum

Maximum

Weighted Average [Member]

Minimum

Maximum

Weighted Average [Member]

Minimum

Maximum

Weighted Average [Member]

Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Collateralized debt obligations

'

'

'

'

'

'

'

'

'

'

'

$1,317

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Collateral dependent impaired loans:

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Commercial and industrial

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,043

1,106

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Construction and development

'

'

'

'

'

'

'

'

'

'

'

'

'

'

136

496

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Commercial real estate-other

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,786

501

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

One- to four- family first liens

'

'

'

'

'

'

'

'

'

'

'

'

'

'

186

114

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

One- to four- family junior liens

'

'

'

'

'

'

'

'

'

'

'

'

'

'

30

19

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Consumer

'

'

'

'

'

'

'

'

'

'

'

'

'

'

44

32

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Mortgage servicing rights

2,298

1,484

'

'

'

'

'

'

'

'

'

2,298

1,484

2,298

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Other real estate owned

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$1,770

$3,278

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Fair value inputs:

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Pretax discount rate

'

'

15.00%

15.00%

15.00%

10.00%

13.00%

10.17%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Actual defaults

'

'

14.00%

17.40%

15.30%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Actual deferrals

'

'

4.70%

16.00%

8.70%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Projected Defaults

'

'

10.40%

13.00%

10.90%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Third party appraisal

'

'

'

'

'

'

'

'

'NM *

'NM *

'NM *

'

'

'

'

'

'NM *

'NM *

'NM *

'NM *

'NM *

'NM *

'NM *

'NM *

'NM *

'NM *

'NM *

'NM *

'NM *

'NM *

'NM *

'NM *

'NM *

'NM *

'NM *

'NM *

'NM *

Appraisal discount

'

'

'

'

'

'

'

'

'NM *

'NM *

'NM *

'

'

'

'

'

'NM *

'NM *

'NM *

'NM *

'NM *

'NM *

'NM *

'NM *

'NM *

'NM *

'NM *

'NM *

'NM *

'NM *

'NM *

'NM *

'NM *

'NM *

'NM *

'NM *

'NM *

Constant prepayment rate

'

'

'

'

'

6.77%

17.15%

7.64%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Parent_Company_Only_Balance_Sh

Parent Company Only Balance Sheets (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
In Thousands, unless otherwise specified
Assets:	'	'	'	'
Loan pool participations, net	$25,533	$35,650	'	'
Deferred income taxes	8,194	776	'	'
Other assets	14,560	20,382	'	'
Total assets	1,755,218	1,792,819	'	'
Liabilities:	'	'	'	'
Long-term debt	15,464	15,464	'	'
Other liabilities	8,997	9,717	'	'
Total liabilities	1,577,202	1,618,887	'	'
Shareholders’ equity:	'	'	'	'
Capital stock, preferred	0	0	'	'
Capital stock, common	8,690	8,690	'	'
Additional paid-in capital	80,506	80,383	'	'
Treasury stock	-3,702	-3,316	'	'
Retained earnings	91,473	77,125	63,645	52,971
Accumulated other comprehensive income	1,049	11,050	6,138	822
Total shareholders’ equity	178,016	173,932	156,494	158,466
Total liabilities and shareholders’ equity	1,755,218	1,792,819	'	'
Parent Company [Member]	'	'	'	'
Assets:	'	'	'	'
Cash	5,781	5,777	'	'
Investment in subsidiaries	177,190	171,528	'	'
Marketable equity securities, available for sale	2,111	1,681	'	'
Loan pool participations, net	3,409	6,128	'	'
Income tax receivable	75	8	'	'
Deferred income taxes	729	269	'	'
Other assets	4,447	4,282	'	'
Total assets	193,742	189,673	'	'
Liabilities:	'	'	'	'
Long-term debt	15,464	15,464	'	'
Other liabilities	262	277	'	'
Total liabilities	15,726	15,741	'	'
Shareholders’ equity:	'	'	'	'
Capital stock, preferred	0	0	'	'
Capital stock, common	8,690	8,690	'	'
Additional paid-in capital	80,506	80,383	'	'
Treasury stock	-3,702	-3,316	'	'
Retained earnings	91,473	77,125	'	'
Accumulated other comprehensive income	1,049	11,050	'	'
Total shareholders’ equity	178,016	173,932	'	'
Total liabilities and shareholders’ equity	$193,742	$189,673	'	'

Parent_Company_Only_Statements

Parent Company Only Statements of Operations (Details) (USD $)	3 Months Ended								12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Condensed Financial Statements, Captions [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Interest and discount on loan pool participations	'	'	'	'	'	'	'	'	$2,046	$1,978	$1,108
Investment securities gains	'	'	'	'	'	'	'	'	65	805	490
Fixed asset losses	'	'	'	'	'	'	'	'	-3	4,188	-195
Interest on long-term debt	'	'	'	'	'	'	'	'	-296	-656	-657
Operating expenses	10,225	10,283	10,585	10,994	10,864	10,713	16,580	10,803	42,087	48,960	42,235
Income before income tax expense	6,006	6,532	6,137	6,578	5,754	5,689	4,238	6,067	25,253	21,748	17,920
Income tax benefit	1,584	1,668	1,606	1,788	1,402	1,451	726	1,635	6,646	5,214	4,609
Net income	4,422	4,864	4,531	4,790	4,352	4,238	3,512	4,432	18,607	16,534	13,311
Parent Company [Member]	'	'	'	'	'	'	'	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Dividends from subsidiaries	'	'	'	'	'	'	'	'	4,006	5,520	18,863
Interest income and dividends on marketable equity securities	'	'	'	'	'	'	'	'	33	168	190
Interest and discount on loan pool participations	'	'	'	'	'	'	'	'	-940	-2,149	-1,474
Investment securities gains	'	'	'	'	'	'	'	'	0	381	0
Interest on long-term debt	'	'	'	'	'	'	'	'	-296	-656	-657
Operating expenses	'	'	'	'	'	'	'	'	1,034	1,064	983
Income before income tax expense	'	'	'	'	'	'	'	'	1,769	2,200	15,939
Income tax benefit	'	'	'	'	'	'	'	'	-890	-1,355	-1,030
Income before equity in subsidiaries’ undistributed income (loss)	'	'	'	'	'	'	'	'	2,659	3,555	16,969
Equity in subsidiaries’ undistributed income (loss)	'	'	'	'	'	'	'	'	15,948	12,979	-3,658
Net income	'	'	'	'	'	'	'	'	$18,607	$16,534	$13,311

Parent_Company_Only_Statements1

Parent Company Only Statements of Cash Flows (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Cash flows from operating activities:	'	'	'
Net income	$18,607	$16,534	$13,311
Adjustments to reconcile net income to net cash provided by operating activities:	'	'	'
Depreciation	2,400	2,300	2,500
Deferred income taxes	-7,961	-5,169	-4,172
Investment securities gain	-65	-805	-490
(Gain) loss on sale of premises and equipment	3	-4,188	195
Stock based compensation	384	266	220
Other-than-temporary impairment of investment securities	0	345	9
Increase in other assets	5,822	1,280	-1,714
Increase (decrease) in other liabilities	-1,410	1,409	6,030
Net cash provided by operating activities	28,260	22,538	23,735
Cash flows from investing activities	'	'	'
Proceeds from sales of investment securities	12,447	18,307	'
Purchase of investment securities	-74,582	-172,060	-198,364
Loan participation pools, net	10,117	14,402	15,819
Purchase of premises and equipment, net	-4,521	-3,518	-2,749
Proceeds from sales of premises and equipment	18	5,244	297
Net cash provided by investing activities	-5,406	-88,403	-98,143
Cash flows from financing activities:	'	'	'
Stock options exercised	320	590	83
Repurchase of common stock	-967	-1,810	-1,498
Dividends paid	-4,259	-3,054	-2,404
Redemption of preferred stock	'	'	-16,000
Repurchase of common stock warrant	'	'	-1,000
Net cash used in financing activities	-45,155	80,433	86,508
Increase (decrease) in cash	-22,301	14,568	12,100
Parent Company [Member]	'	'	'
Cash flows from operating activities:	'	'	'
Net income	18,607	16,534	13,311
Adjustments to reconcile net income to net cash provided by operating activities:	'	'	'
Income (Loss) from Subsidiaries, Net of Dividends or Distributions	-15,948	-12,979	3,658
Depreciation	0	0	2
Deferred income taxes	-583	-106	1
Investment securities gain	0	-381	0
Stock based compensation	384	266	220
Increase in other assets	-232	-158	-85
Increase (decrease) in other liabilities	-15	4	-31
Net cash provided by operating activities	2,213	3,180	17,076
Cash flows from investing activities	'	'	'
Proceeds from sales of investment securities	2	1,131	0
Purchase of investment securities	-24	-1,192	-10
Loan participation pools, net	2,719	5,834	801
Proceeds from sales of premises and equipment	0	0	7
Net cash provided by investing activities	2,697	5,773	798
Cash flows from financing activities:	'	'	'
Stock options exercised	320	590	83
Repurchase of common stock	-967	-1,810	-1,498
Dividends paid	-4,259	-3,054	-2,404
Redemption of preferred stock	0	0	-16,000
Repurchase of common stock warrant	0	0	-1,000
Net cash used in financing activities	-4,906	-4,274	-20,819
Increase (decrease) in cash	4	4,679	-2,945
Cash Balance:	'	'	'
Beginning	5,777	1,098	4,043
Ending	$5,781	$5,777	$1,098

Subsequent_Events_Subsequent_E

Subsequent Events Subsequent Events Textual References (Details) (USD $)	12 Months Ended			2 Months Ended	14 Months Ended	0 Months Ended	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Mar. 04, 2014	Mar. 04, 2014	Jan. 27, 2014	Dec. 31, 2013	Jan. 21, 2014
	count			Common Stock [Member]	Common Stock [Member]	Subsequent Event [Member]	Subsequent Event [Member]	Subsequent Event [Member]
				January 15 2013 Share Repurchase Program [Member]	January 15 2013 Share Repurchase Program [Member]	Collateralized debt obligations	Common Stock [Member]	Common Stock [Member]
Subsequent Event [Line Items]	'	'	'	'	'	'	'	'
Dividends Payable, Amount Per Share	'	'	'	'	'	'	'	$0.14
Dividends Payable, Date to be Paid	'	'	'	'	'	'	17-Mar-14	'
Dividends Payable, Date of Record	'	'	'	'	'	'	1-Mar-14	'
Investment in Collateralized Debt Obligations, Number of Securities	5	'	'	'	'	'	'	'
Investment securities gains	$65,000	$805,000	$490,000	'	'	$800,000	'	'
Treasury Stock, Shares, Acquired	'	'	'	29,466	'	'	'	'
Treasury Stock, Value, Acquired, Cost Method	967,000	1,810,000	1,498,000	700,000	'	'	'	'
Stock Repurchase Program, Remaining Authorized Repurchase Amount	'	'	'	'	$3,300,000	'	'	'

Quarterly_Results_of_Operation2

Quarterly Results of Operations (unaudited) (Details) (USD $)	3 Months Ended								12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Interest income	$16,020	$16,116	$16,768	$17,190	$16,924	$17,586	$17,277	$17,515	$66,094	$69,302	$68,581
Interest expense	2,723	2,851	3,159	3,399	3,767	3,867	4,051	4,267	12,132	15,952	19,783
Net interest income	13,297	13,265	13,609	13,791	13,157	13,719	13,226	13,248	53,962	53,350	48,798
Provision for loan losses	300	250	600	200	650	575	575	579	1,350	2,379	3,350
Noninterest income	3,234	3,800	3,713	3,981	4,111	3,258	8,167	4,201	14,728	19,737	14,707
Noninterest expense	10,225	10,283	10,585	10,994	10,864	10,713	16,580	10,803	42,087	48,960	42,235
Income before income tax expense	6,006	6,532	6,137	6,578	5,754	5,689	4,238	6,067	25,253	21,748	17,920
Income tax expense (Includes $25 income tax expense reclassified from accumulated other comprehensive income for the year ended December 31, 2013)	1,584	1,668	1,606	1,788	1,402	1,451	726	1,635	6,646	5,214	4,609
Net income	4,422	4,864	4,531	4,790	4,352	4,238	3,512	4,432	18,607	16,534	13,311
Preferred stock dividends and discount accretion	'	'	'	'	'	'	'	'	'	'	645
Net income available to common shareholders	'	'	'	'	'	'	'	'	$18,607	$16,534	$12,666
Basic earnings per common share	$0.52	$0.57	$0.54	$0.56	$0.51	$0.50	$0.42	$0.52	$2.19	$1.95	$1.47
Diluted earnings per common share	$0.52	$0.57	$0.53	$0.56	$0.51	$0.50	$0.41	$0.52	$2.18	$1.94	$1.47