Centrue Financial 10-K 15 Mar 16 2015 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2015	Mar. 15, 2016	Jun. 30, 2015
Document and Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2015
Document Fiscal Year Focus	2,015
Document Fiscal Period Focus	FY
Entity Registrant Name	CENTRUE FINANCIAL CORP
Entity Central Index Key	1,019,650
Trading Symbol	cfcb
Current Fiscal Year End Date	--12-31
Entity Filer Category	Smaller Reporting Company
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Well-known Seasoned Issuer	No
Entity Common Stock, Shares Outstanding		6,513,694
Entity Public Float			$ 24,780,135

Consolidated Balance Sheets

Consolidated Balance Sheets $ in Thousands	Dec. 31, 2015USD ($)		Dec. 31, 2014USD ($)
ASSETS
Cash and cash equivalents	$ 27,655		$ 49,167
Securities available-for-sale	171,440		135,371
Restricted securities	9,116		6,102
Loans held for sale	735		364
Loans, net of allowance for loan loss: 2015 - $8,591; 2014 - $7,981	624,956		545,219
Branch assets held for sale	16,673		0
Bank-owned life insurance	35,103		34,194
Mortgage servicing rights	2,129		2,240
Premises and equipment, net	16,852		22,626
Intangible assets, net	880		1,831
Other real estate owned, net	8,401		10,256
Deferred tax assets, net	38,180		0
Other assets	9,098		9,719
Total assets	961,218		817,089
Deposits:
Non-interest-bearing	164,137		144,633
Interest-bearing	554,367		554,191
Total deposits	718,504		698,824
Federal funds purchased and securities sold under agreements to repurchase	18,730		26,691
Federal Home Loan Bank advances	76,000		20,000
Notes payable	0		10,250
Series B mandatory redeemable preferred stock	268		268
Subordinated debentures	20,620		20,620
Other liabilities	5,815		10,108
Total liabilities	839,937		786,761
Commitments and contingent liabilities	0		0
Common stock, $0.01 par value; 215,000,000 shares authorized; 6,581,544 shares issued at December 31, 2015; 215,000,000 shares authorized; 248,452 shares issued at December 31, 2014	66		2
Surplus	140,609		78,955
Accumulated deficit	(2,958)		(58,750)
Accumulated other comprehensive loss	(2,946)		(2,051)
Stockholders' equity before treasury stock	137,407		53,460
Treasury stock, at cost, 67,850 shares at December 31, 2015 and 97,330 at December 31, 2014	(16,126)	[1]	(23,132)
Total stockholders' equity	121,281	[2]	30,328
Total liabilities and stockholders' equity	961,218		817,089
Cumulative Perpetual Preferred Stock
Deposits:
Perpetual Preferred Stock	0		32,668
Non-Cumulative Perpetual Preferred Stock
Deposits:
Perpetual Preferred Stock	$ 2,636		$ 2,636
[1]	Share and per share amounts have been adjusted to reflect the Company's 1:30 reverse stock split effective May 29, 2015.
[2]	Share and per share amounts have been adjusted to reflect the Company's 1:30 reverse stock split effective May 29, 2015.

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2015		Dec. 31, 2014
Allowance for loan loss	$ 8,591		$ 7,981
Preferred stock authorized (in shares)	200,000
Common stock, par value (in dollars per share)	$ 0.01		$ 0.01
Common stock authorized (in shares)	215,000,000		215,000,000
Common stock issued (in shares)	6,581,544		248,452
Treasury stock (in shares)	67,850	[1]	97,330
Cumulative Perpetual Preferred Stock
Preferred stock authorized (in shares)	0		32,668
Preferred stock issued (in shares)			32,668
Preferred stock, aggregate liquidation preference			$ 32,668
Non-Cumulative Perpetual Preferred Stock
Preferred stock authorized (in shares)	2,363		2,363
Preferred stock issued (in shares)	2,363		2,363
Preferred stock, aggregate liquidation preference	$ 2,636		$ 2,636
[1]	Share and per share amounts have been adjusted to reflect the Company's 1:30 reverse stock split effective May 29, 2015.

Consolidated Statements of Inco

Consolidated Statements of Income (Loss) and Comprehensive Income (Loss) $ in Thousands		12 Months Ended
		Dec. 31, 2015USD ($)$ / shares	Dec. 31, 2014USD ($)$ / shares
Interest income
Loans		$ 25,619	$ 24,969
Securities
Taxable		2,887	2,272
Exempt from federal income taxes		164	233
Federal funds sold and other		85	121
Total interest income		28,755	27,595
Interest expense
Deposits		1,227	2,040
Federal funds purchased and securities sold under agreements to repurchase		50	55
Federal Home Loan Bank advances		529	450
Series B mandatory redeemable preferred stock		16	16
Subordinated debentures		545	600
Notes payable		84	339
Total interest expense		2,451	3,500
Net interest income		26,304	24,095
Provision for loan losses		375	7,202
Net interest income after provision for loan losses		25,929	16,893
Noninterest income
Service charges		4,051	4,348
Mortgage banking income		1,240	1,485
Electronic banking services		2,545	2,499
Bank-owned life insurance		909	899
Securities gains, net		339	929
Income from real estate		619	621
Gain on sale of OREO		161	896
Gain on sale of other assets		0	750
Gain on extinguishment of debt		1,750	0
Other income		814	383
Noninterest income		12,428	12,810
Noninterest expense
Salaries and employee benefits		16,805	15,383
Occupancy, net		2,840	3,049
Furniture and equipment		1,028	984
Marketing		378	247
Supplies and printing		222	242
Telephone		816	732
Data processing		1,661	1,734
FDIC insurance		1,166	1,891
Loan processing and collection costs		705	645
OREO carrying costs		799	996
OREO valuation adjustment		291	2,082
Amortization of intangible assets		951	951
Other expenses		5,577	5,278
Noninterest Expense		33,239	34,214
Income (loss) before income taxes		5,118	(4,511)
Income tax benefit		(37,484)	0
Net income (loss)		42,602	(4,511)
Preferred stock dividends		1,484	3,569
Discount on redemption of preferred stock		(13,668)	0
Net income (loss) for common stockholders		$ 54,786	$ (8,080)
Basic earnings (loss) per common share (in dollars per share) | $ / shares	[1]	$ 11.08	$ (44.81)
Diluted earnings (loss) per common share (in dollars per share) | $ / shares	[1]	$ 11.08	$ (44.81)
Total comprehensive income (loss):
Net income (loss)		$ 42,602	$ (4,511)
Change in unrealized gains (losses) on securities available for sale		(1,127)	(101)
Reclassification adjustment for losses (gains) recognized in income		(339)	(929)
Net unrealized gains (loss)		(1,466)	(1,030)
Tax effect		(571)	0
Other comprehensive income (loss)		(895)	(1,030)
Total comprehensive income (loss)		$ 41,707	$ (5,541)
[1]	Share and per share amounts have been adjusted to reflect the Company's 1:30 reverse stock split effective May 29, 2015.

Consolidated Statements of Stoc

Consolidated Statements of Stockholders' Equity Statement - USD ($) $ in Thousands		Total	Preferred StockSeries A Convertible Preferred Stock	Preferred StockSeries C Preferred Stock	Preferred StockSeries D Preferred Stock	Common Stock	Surplus	(Accumulated Deficit)	Accumulated Other Comprehensive Income (Loss)	Treasury Stock
Beginning balance at Dec. 31, 2013		$ 35,871	$ 500	$ 32,668	$ 0	$ 2	$ 82,051	$ (56,452)	$ (1,021)	$ (21,877)	[1]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Preferred stock dividends		(881)						(881)
Common and preferred stock conversion to Series D preferred stock		881	(500)		2,636					(1,255)	[1]
Repurchase of TARP warrants		(2)					(3,096)	3,094
Net income (loss)		(4,511)						(4,511)
Total comprehensive income (loss)		(1,030)							(1,030)
Ending balance at Dec. 31, 2014		30,328	0	32,668	2,636	2	78,955	(58,750)	(2,051)	(23,132)	[1]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net proceeds from common stock offering - see Note 1		68,248				64	68,184
Preferred stock dividends		(478)						(478)
Deferred compensation distribution (1,003 shares)		15					(224)			239	[1]
Redemption of preferred stock - see Note 1		(19,000)		(32,668)				13,668
Restricted stock awards (40,443 shares)		461					(6,306)			6,767	[1]
Net income (loss)		42,602						42,602
Total comprehensive income (loss)		(895)							(895)
Ending balance at Dec. 31, 2015	[1]	$ 121,281	$ 0	$ 0	$ 2,636	$ 66	$ 140,609	$ (2,958)	$ (2,946)	$ (16,126)
[1]	Share and per share amounts have been adjusted to reflect the Company's 1:30 reverse stock split effective May 29, 2015.

Consolidated Statements of Sto6

Consolidated Statements of Stockholders' Equity (Parenthetical)	12 Months Ended
	Dec. 31, 2015shares
Deferred compensation distribution (in shares)	1,003
Restricted stock
Number of shares authorized (in shares)	40,443

Consolidated Statement of Cash

Consolidated Statement of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Cash flows from operating activities
Net income (loss)	$ 42,602	$ (4,511)
Adjustments to reconcile net income (loss) to net cash provided by operating activities
Depreciation	1,199	1,385
Amortization of intangible assets	951	951
Amortization of mortgage servicing rights, net	341	293
Amortization of bond premiums, net	1,396	1,338
Income tax valuation adjustment	(39,759)	2,136
Share based compensation	461	0
Provision for loan losses	375	7,202
Provision for deferred income taxes	1,579	(2,136)
Earnings on bank-owned life insurance	(909)	(899)
OREO valuation adjustment	291	2,082
Securities gains, net	(339)	(929)
Gain on sale of OREO	(161)	(896)
Gain on extinguishment of debt	(1,750)	0
Gain on sale of loans	(828)	(968)
Proceeds from sales of loans held for sale	32,631	37,061
Origination of loans held for sale	(28,328)	(35,803)
Change in assets and liabilities
(Increase) decrease in other assets	338	(1,108)
Increase (decrease) in other liabilities	(3,624)	1,138
Net cash (used in) provided by operating activities	6,466	6,336
Cash flows from investing activities
Proceeds from paydowns of securities available for sale	31,928	26,277
Proceeds from calls and maturities of securities available for sale	5,965	2,165
Proceeds from sales of securities available for sale	91,409	60,161
Purchases of securities available for sale	(167,840)	(67,532)
Redemption of Federal Reserve Bank stock	179	13
Purchase of Federal Home Loan Bank stock	(2,028)	0
Purchase of Federal Reserve Bank stock	(1,165)	(74)
Bulk Asset Sale	0	31,330
Net increase in loans	(95,774)	(23,766)
Purchase of premises and equipment	(574)	(876)
Proceeds from sales of OREO	1,933	5,488
Net cash (used in) provided by investing activities	(135,967)	33,186
Cash flows from financing activities
Net increase (decrease) in deposits	19,680	(55,521)
Net increase (decrease) in federal funds purchased and securities sold under agreements to repurchase	(7,961)	4,420
Net proceeds of advances from the Federal Home Loan Bank	56,000	(10,000)
Repayment of Notes Payable	(8,500)	0
Purchase of Tarp Warrants	0	(2)
Net proceeds from the issuance of Common Stock	68,248	0
Purchase of Treasury Stock	0	(1,255)
Redemption of Series A Convertible Preferred Stock	0	(500)
Redemption of Series C Cumulative Perpetual Preferred Stock	(19,000)	0
Issuance of Series D Non-Cumulative Perpetual Preferred Stock	0	2,636
Dividends paid on preferred stock	(478)	(881)
Net cash provided by (used in) financing activities	107,989	(61,103)
Cash and cash equivalents	(21,512)	(21,581)
Cash and cash equivalents
Beginning of period	49,167	70,748
End of period	27,655	49,167
Cash payments for
Interest	7,358	3,155
Income taxes	121	5
Transfers from loans to other real estate owned	292	617
Transfer from loan portfolio and sold in secondary market	3,848	0
Loan transfers to branch assets held for sale	11,524	0
Premises and equipment transferred to branch assets held for sale	$ 5,149	$ 0

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Centrue Financial Corporation is a bank holding company organized under the laws of the State of Delaware. When we use the terms “Centrue,” the “Company,” “we,” “us,” and “our,” we mean Centrue Financial Corporation, a Delaware Corporation, and its consolidated subsidiary. When we use the term the “Bank,” we are referring to our wholly owned banking subsidiary, Centrue Bank. The Company and the Bank provide a full range of banking services to individual and corporate customers located in markets extending from the far western and southern suburbs of the Chicago metropolitan area across Central Illinois down to the metropolitan St. Louis area. These services include demand, time, and savings deposits; business and consumer lending; and mortgage banking. The Company is subject to competition from other financial institutions and nonfinancial institutions providing financial services. Additionally, the Company and the Bank are subject to regulations of certain regulatory agencies and undergo periodic examinations by those regulatory agencies. Principles of Consolidation The consolidated financial statements include the accounts and results of operations of the Company and its subsidiary after elimination of all significant intercompany accounts and transactions. Use of Estimates The accounting and reporting policies of the Company and its subsidiaries conform to U.S. generally accepted accounting principles ("GAAP") and general practice within the banking industry. The preparation of consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Actual results could differ from those estimates. Basis of Presentation The accounting and reporting policies of the Company conform to generally accepted accounting principles in the United States of America. The Company’s December 31, 2015 and 2014 financial statements reflect all adjustments that are, in the opinion of management, necessary for a fair presentation of its financial position and results of operations for the periods presented. All such adjustments are of a normal and recurring nature. Reverse Stock Split Common shares and per share amounts for all periods shown have been restated to reflect the impact of the 1 : 30 reverse stock split the Company completed effective May 29, 2015. Cash flows Cash and cash equivalents includes cash, deposits with other financial institutions with maturities under 90 days, and federal funds sold. Net cash flows are reported for customer loan and deposit transactions, repurchase agreements, FHLB advances and federal funds purchased. Securities Available-for-sale . Securities classified as available-for-sale are those securities that the Company intends to hold for an indefinite period of time, but not necessarily to maturity. Available-for-sale securities are carried at fair value with unrealized gains and losses, net of related deferred income taxes, recorded in stockholders’ equity as a separate component of other comprehensive income. Any decision to sell a security classified as available-for-sale would be based on various factors, including significant movements in interest rates, changes in the maturity mix of the Company’s assets and liabilities, liquidity needs, regulatory capital considerations, and other similar factors. Purchases and sales of securities are recognized on a trade date basis. Realized securities gains or losses are reported in securities gains (losses), net in the Consolidated Statement of Income (Loss). The cost of securities sold is based on the specific identification method. On a quarterly basis, the Company makes an assessment to determine whether there have been any events or circumstances to indicate that a security for which there is an unrealized loss is impaired on an other-than-temporary (“OTTI”) basis. In evaluating other-than-temporary impairment, the Company considers many factors including the severity and duration of the impairment; the financial condition and near-term prospects of the issuer, which for debt securities considers external credit ratings and recent downgrades; whether it intends to sell, or it is more likely than not that it will be required to sell, a security in an unrealized loss position before recovery of its amortized cost basis. Securities for which there is an unrealized loss that is deemed to be OTTI are written down to fair value with the write-down recorded as a realized loss and included in net impairment on securities, but only to the extent the impairment is related to credit losses. The amount of the impairment related to other factors is recognized in other comprehensive income unless management intends to sell the security or believes it is more likely than not that it will be required to sell the security prior to full recovery. For trust preferred collateralized debt obligations (“CDOs”), the issuer’s financial condition, payment history, and ability to pay interest and repay principal according to the terms of the financial instrument, are analyzed. For multi-issuer securities, the analysis is conducted for each issuer. In analyzing an issuer’s financial condition, the Company reviews relevant balance sheet, income statement and ratio information. Industry and market information are also considered. The Company considers whether the securities were issued by or have principal and interest payments guaranteed by the federal government or its agencies. The Company conducts regular reviews of the bond agency ratings of securities. Interest income is reported net of amortization of premiums and accretion of discounts. Amortization of purchase premium or discount is included in interest income. Premiums and discounts on securities are amortized over the level-yield method without anticipating prepayments except for mortgage backed securities where prepayments are anticipated. Restricted Securities. Federal Home Loan Bank stock and Federal Reserve Bank stock are carried at cost and are included in restricted stock. The Corporation is required to maintain these equity securities as a member of both the Federal Home Loan Bank and the Federal Reserve System, and in amounts as required by these institutions. These equity securities are “restricted” in that they can only be sold back to the respective institutions or another member institution at par. Therefore, they are less liquid than other tradable equity securities and no impairment has been recorded during 2015 and 2014 . Both cash and stock dividends are reported as income. Loans Held for Sale Mortgage loans originated and intended for sale in the secondary market are carried at the lower of aggregate cost or fair value, as determined by outstanding commitments from investors. Net unrealized losses, if any, are recorded as a valuation allowance and charged to earnings. Mortgage loans held for sale are sold with either servicing rights retained or servicing rights released. When retaining the servicing rights, the carrying value of mortgage loans sold is reduced by the cost allocated to the servicing right. Gains and losses on sales of mortgage loans are based on the difference between the selling price and the carrying value of the related loan sold. When selling service released, the gain or loss is determined by comparing the selling price to the value of the mortgage sold. Loans Loans that management has the intent and ability to hold for the foreseeable future or until maturity or payoff are reported at the principal balance outstanding; net of purchase premiums and discounts, deferred loan fees and costs, and an allowance for loan losses. Interest income on loans is accrued based on principal amounts outstanding. Loan and lease origination fees, fees for commitments that are expected to be exercised and certain direct loan origination costs are deferred and the net amount amortized over the estimated life of the related loans or commitments as a yield adjustment. Other credit-related fees are recognized as fee income when earned. Nonaccrual Loans. Generally, commercial loans and loans secured by real estate are designated as nonaccrual: (a) when either principal or interest payments are 90 or more past due based on contractual terms unless the loan is sufficiently collateralized such that full repayment of both principal and interest is expected and is in the process of collection; or (b) when an individual analysis of a borrower’s creditworthiness indicates a credit should be placed on nonaccrual status. When a loan is placed on nonaccrual status, unpaid interest credited to income in the current year is reversed and unpaid interest accrued in prior years is charged against the allowance for loan losses. Future interest income may only be recorded on a cash basis after recovery of principal is reasonably assured. Nonaccrual loans are returned to accrual status when the financial position of the borrower and other relevant factors indicate there is no longer doubt as to such collectability. Charged-Off Loans. Commercial loans and loans secured by real estate are generally charged-off when deemed uncollectible. A loss is recorded at that time if the net realizable value of the real estate can be quantified and it is less than the associated principal and interest. Consumer loans that are not secured by real estate are subject to mandatory charge-off at a specified delinquency date and are usually not classified as non-accrual prior to being charged-off. Consumer loans, which include installment, automobile, and single payment loans are generally charged-off in full no later than the end of the month in which the loan becomes 120 days past due. 90-Day Past Due Loans. 90 days or more past due loans are loans for which principal or interest payments become 90 days or more past due but that still accrue interest since they are loans that are well secured and in the process of collection. Allowance for Loan Losses. The allowance for loan losses is a valuation allowance for probable incurred credit losses. Credit exposures deemed to be uncollectible are charged-off against the allowance, while recoveries of amounts previously charged-off are credited to the allowance. Management estimates the allowance balance required using past loan loss experience, the nature and volume of the portfolio, information about specific borrower situations and estimated collateral values, economic conditions, and other factors. Allocations of the allowance may be made for specific loans, but the entire allowance is available for any loan that, in management’s judgment, should be charged off. Additions to the allowance for loan losses are charged to operating expense through the provision for loan losses. The amount charged to operating expense in any given year is dependent upon a number of factors including historic loan growth and changes in the composition of the loan portfolio, net charge-off levels, and the Company’s assessment of the allowance for loan losses. The allowance for loan losses consists of specific and general components. The specific component is established for expected losses on individual loans classified as impaired. A loan is considered impaired when, based on current information and events, it is probable that the Company will be unable to collect all contractual principal and interest due according to the terms of the loan agreement. Impaired loans are measured based on the present value of expected future cash flows discounted at the loan’s effective interest rate or the value of the underlying collateral. The Company evaluates the collectability of both principal and interest when assessing the need for loss accrual. 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 case-by-case basis, taking into consideration all 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. The specific reserves component of the allowance for loan losses is based on a regular analysis of impaired loans exceeding a fixed dollar amount where the internal credit rating is at or below a predetermined classification. If the estimated fair value of the loan is less than the recorded book value, a valuation allowance is established as a component of the allowance for loan losses. In cases where a borrower experiences financial difficulties and the Company makes certain concessionary modifications to contractual terms, the loan is classified as a troubled debt restructured loan. Loans restructured at a rate equal to or greater than that of a new loan with comparable risk at the time the contract is modified may be excluded from restructured loans in the calendar years subsequent to the restructuring if they are in compliance with modified terms. Generally, a nonaccrual loan that is a troubled debt restructuring remains on nonaccrual until such time that repayment of the remaining principal and interest is not in doubt, and the borrower has a period of satisfactory repayment performance. Troubled debt restructurings (TDRs) are individually evaluated for impairment and included in the separately identified impairment disclosures. TDRs are measured at the present value of estimated future cash flows using the loan’s effective rate at inception. If a TDR is considered to be a collateral dependent loan, the loan is reported, net, at the fair value of the collateral. For TDRs that subsequently default, the Company determines the amount of the allowance on that loan in accordance with the accounting policy for the allowance for loan losses on loans individually identified as impaired. The Company incorporates recent historical experience related to TDRs including the performance of TDRs that subsequently default into the calculation of the allowance by loan portfolio segment. The general component covers loans that are collectively evaluated for impairment. Large groups of smaller balance homogeneous loans, such as consumer and residential real estate loans, are collectively evaluated for impairment, and accordingly, they are not included in the separately identified impairment disclosures. The general allowance component also includes loans that are not individually identified for impairment evaluation, as well as those loans that are individually evaluated but are not considered impaired. The general component is based on historical loss experience adjusted for current factors. The historical loss experience is determined by portfolio segment and is based on the actual loss history experienced by the Company. This actual loss experience is supplemented with other economic factors based on the risks present for each portfolio segment. These economic factors include consideration of the following: levels of and trends in delinquencies and impaired loans (including TDRs); levels of and trends in charge-offs and recoveries; migration of loans to the classification of special mention, substandard, or doubtful; trends in volume and terms of loans; effects of any changes in risk selection and underwriting standards; other changes in lending policies, procedures, and practices; experience, ability, and depth of lending management and other relevant staff; national and local economic trends and conditions; industry conditions; and effects of changes in credit concentration. The establishment of the allowance for loan losses involves a high degree of judgment and includes a level of imprecision given the difficulty of identifying all of the factors impacting loan repayment and the timing of when losses actually occur. Management considers the following when assessing the risk in the loan portfolio: • Commercial loans are dependent on the strength of the industries of the related borrowers and the success of their businesses. Commercial loans are advances for equipment purchases or to provide working capital or meet other financing needs of business enterprises. These loans may be secured by accounts receivable, inventory, equipment or other business assets. At the time of origination, financial information is obtained from the borrower to evaluate ability to repay the loans and periodically obtained during the life of the loan. • Agriculture and Agriculture Real Estate are subject to adverse market conditions including changes in local or foreign demand, weather related reduction in output, impact on storage, distribution or use. Increasing commodity prices leading to higher production costs, distribution or exporting. • Commercial real estate loans and Construction loans are dependent on the industries tied to these loans as well as the local commercial real estate market. The loans are secured by the real estate, and appraisals are obtained to support the loan amount. An evaluation of the project’s cash flows is performed to evaluate the borrower’s ability to repay the loan at the time of origination and periodically updated during the life of the loan. • 1-4 family residential real estate and home equity loans are affected by the local residential real estate market, the local economy, and, for variable rate mortgages, movement in indices tied to these loans. At the time of origination the Bank evaluates the borrower’s repayment ability through a review of credit scores and debt to income ratios. Appraisals are obtained to support the loan amount. • Consumer loans are subject to adverse employment conditions in the local economy which may lead to higher default rates. Decreases in the value of underlying collateral effect the amount collected if a borrower defaults. Loan Commitments and Related Financial Instruments Financial instruments include off-balance sheet credit instruments, such as commitments to make loans and commercial letters of credit, issued to meet customer financing needs. The face amount for these items represents the exposure to loss, before considering customer collateral or ability to repay. Such financial instruments are recorded when they are funded. Concentration of Credit Risk The Bank generates loans throughout its foot print, with lending activities primarily focused on LaSalle, Kankakee and Will Counties in Illinois and St. Louis County in Missouri. The Bank engages in all traditional aspects of community lending with focuses on: (i) owner occupied commercial real estate, (ii) investor commercial real estate, (iii) residential lending, (iv) commercial lending, (v) multifamily real estate, and (vi) agricultural lending. Mortgage Servicing Rights Servicing rights are recognized separately when they are acquired through sales of loans. When mortgage loans are sold, servicing rights are initially recorded at fair value with the income statement effect recorded in gains on sales of loans. Fair value is based on market prices for comparable mortgage servicing contracts, when available or alternatively, is based on a valuation model that calculates the present value of estimated future net servicing income. All classes of servicing assets are subsequently measured using the amortization method which requires servicing rights to be amortized into non-interest income in proportion to, and over the period of, the estimated future net servicing income of the underlying loans. Servicing rights are evaluated for impairment based upon the fair value of the rights as compared to carrying amount. Impairment is determined by stratifying rights into groupings based on predominant risk characteristics, such as interest rate, loan type and investor type. Impairment is recognized through a valuation allowance for an individual grouping, to the extent that fair value is less than the carrying amount. If the Company later determines that all or a portion of the impairment no longer exists for a particular grouping, a reduction of the allowance may be recorded as an increase to income. Changes in valuation allowances are reported with noninterest expense in the other expense line on the income (loss) statement. The fair values of servicing rights are subject to significant fluctuations as a result of changes in estimated and actual prepayment speeds and default rates and losses. Servicing fee income which is reported on the income (loss) statement as mortgage banking income is recorded for fees earned for servicing loans. The fees are based on a contractual percentage of the outstanding principal; or a fixed amount per loan and are recorded as income when earned. The amortization of mortgage servicing rights is netted against loan servicing fee income. Servicing fees totaled $492 thousand and $616 thousand for years ended December 31, 2015 and 2014 , respectively. Premises and Equipment Premises, furniture and equipment, and leasehold improvements are stated at cost less accumulated depreciation and land is carried at cost. Depreciation expense is determined by the straight-line method over the estimated useful lives of the assets. Leasehold improvements are amortized on a straight-line basis over the shorter of the life of the asset or the lease term. Rates of depreciation are generally based on the following useful lives: buildings, 25 to 40 years; building improvements, typically 3 to 15 years but longer under limited circumstances; and furniture and equipment, 3 to 10 years. Gains and losses on dispositions are included in gains on sale of other assets in noninterest income on the Consolidated Statement of Income (Loss). Maintenance and repairs are charged to operating expenses as incurred, while improvements that extend the useful life of assets are capitalized and depreciated over the estimated remaining life. Long-lived depreciable assets are evaluated periodically for impairment when events or changes in circumstances indicate the carrying amount may not be recoverable. Impairment exists when the expected undiscounted future cash flows of a long-lived asset are less than its carrying value. In that event, the Company recognizes a loss for the difference between the carrying amount and the estimated fair value of the asset based on a quoted market price, if applicable, or a discounted cash flow analysis. Impairment losses are recorded in other noninterest expense on the Consolidated Statement of Income (Loss). Other Real Estate Owned Other real estate owned includes properties acquired in partial or total satisfaction of certain loans. Properties are initially recorded at fair value, which represents the estimated sales price of the properties on the date acquired less estimated selling costs, establishing a new cost basis. Any write-downs in the carrying value of a property at the time of acquisition are charged against the allowance for loan losses. Management periodically reviews the carrying value of other real estate owned. Any write-downs of the properties subsequent to acquisition, as well as gains or losses on disposition and income or expense from the operations of other real estate owned, are recognized in operating results in the period they are realized. Earnings Per Share Basic earnings per common share is net income for common stockholders divided by the weighted average number of common shares outstanding during the period. Diluted earnings per common share includes the dilutive effect of additional potential common shares issuable under stock options using the treasury stock method. Earnings and dividends per share are restated for all stock splits through the date of issuance of the financial statements. Transfers of Financial Assets Transfers of financial assets are accounted for as sales, when control over the assets has been relinquished. Control over transferred assets is deemed to be surrendered when the assets have been isolated from the Company, the transferee obtains the right (free of conditions that constrain it from taking advantage of that right) to pledge or exchange the transferred assets, and the Company does not maintain effective control over the transferred assets through an agreement to repurchase them before their maturity. Bank-Owned Life Insurance (“BOLI”) BOLI represents life insurance policies on the lives of certain current and former Company officers and directors for which the Company is the sole beneficiary. These policies are recorded as an asset on the Consolidated Balance Sheets at their cash surrender value adjusted for other charges or other amounts due that are probable at settlement. The change in cash surrender value and insurance proceeds received are recorded as bank-owned life insurance income on the Consolidated Statement of Income (Loss) in noninterest income. Management performs a monthly analysis to determine the current cash surrender value and adjusts the value accordingly. Intangible Assets Intangible assets represent purchased assets that also lack physical substance but can be distinguished from goodwill because of contractual or other legal rights or because the asset is capable of being sold or exchanged either on its own or in combination with a related contract, asset, or liability. Identified intangible assets that have a finite useful life are amortized over that life in a manner that reflects the estimated decline in the economic value of the identified intangible asset. Identified intangible assets that have a finite useful life are periodically reviewed to determine whether there have been any events or circumstances to indicate that the recorded amount is not recoverable from projected undiscounted net operating cash flows. If the projected undiscounted net operating cash flows are less than the carrying amount, a loss is recognized to reduce the carrying amount to fair value, and, when appropriate, the amortization period is also reduced. Unamortized intangible assets associated with disposed assets are included in the determination of gain or loss on the sale of the disposed assets. Intangible assets consist of core deposit and acquired customer relationship intangible assets arising from whole bank and branch company acquisitions. They are initially measured at fair value and then are amortized over ten years using an accelerated method. Management reviews intangible assets at least annually for impairment and any such impairment will be recognized in the period identified. Repurchase agreements Substantially all repurchase agreement liabilities represent amounts advanced by various customers. Securities are pledged to cover these liabilities, which are not covered by federal deposit insurance. Mortgage Banking Derivatives Commitments to fund mortgage loans (interest rate locks) to be sold into the secondary market and forward commitments for the future delivery of these mortgage loans are accounted for as free standing derivatives. Fair values of these mortgage derivatives are estimated based on changes in mortgage interest rates from the date the interest on the loan is locked. The Company enters into forward commitments for the future delivery of mortgage loans when interest rate locks are entered into, in order to hedge the change in interest rates resulting from its commitments to fund the loans. Changes in the fair values of these derivatives are included in net gains on sales of loans. Income Taxes The Company files income tax returns in the U.S. federal jurisdiction and in Illinois and Missouri. The provision for income taxes is based on income in the financial statements, rather than amounts reported on the Company’s income tax return. Changes in enacted tax rates and laws are reflected in the financial statements in the periods they occur. The Company recognizes interest related to income tax matters as interest expense and penalties related to income tax matters as other expense. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts 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 years in which those temporary differences are expected to be recovered or settled. A valuation allowance is established for any deferred tax asset for which recovery or settlement is unlikely. The effect on deferred tax assets and liabilities of a change in tax rates is recognized as income or expense in the period that includes the enactment date. A tax position is recognized as a benefit only if it is “more likely than not” that the tax position would be sustained in a tax examination, with a tax examination being presumed to occur. The amount recognized is the largest amount of tax benefit that is greater than 50% likely of being realized on examination. For tax positions not meeting the “more likely than not” test, no tax benefit is recorded. Stock-Based Compensation Compensation cost is recognized for stock options and restricted stock awards issued to employees, based on the fair value of these awards at the date of grant. A Black-Scholes model is utilized to estimate the fair value of the stock options, while the market price of the Company’s common stock at the date of grant is used for restricted stock awards. Compensation cost is recognized over the required service period, generally defined as the vesting period. For awards with graded vesting, compensation cost is recognized on a straight-line basis over the requisite service period for the entire award. Fair Value of Financial Instruments Fair values of financial instruments are estimated using relevant market information and other assumptions. Fair value estimates involve uncertainties and matters of significant judgment regarding interest rates, credit risk, prepayments, and other factors, especially in the absence of broad markets for particular items. Changes in assumptions or in market conditions could significantly affect the estimates. See Note 4 for additional information. Stockholders’ Equity Capital Event On March 31, 2015, the Company completed the issuance of $76.0 million of new common stock in a private placement offering, $68.2 million of net proceeds after issuance and registration costs of $7.8 million . A total of 6.3 million shares were sold in the offering at a price of $12.00 per share. In conjunction with the stock offering the Company used the proceeds in part to pay $4.9 million in accrued but unpaid interest on its subordinated debentures, redeemed all $32.7 million of Series C Preferred Stock for $19.0 million , settled $10.3 million in notes payable with another financial institution for $8.5 million and made a $36.0 million capital contribution into Centrue Bank. The remaining proceeds will be used for general corporate purposes. Preferred Stock The Company’s Certificate of Incorporation authorizes its board of directors to fix or alter the rights, preferences, privileges, and restrictions of 200,000 shares of preferred stock. The Company has the following classes of preferred stock issued or authorized: Series A Convertible Preferred Stock : The Company has no Series A Convertible Preferred Stock shares authorized, issued and outstanding as of December 31, 2015 . On July 29, 2014, all 2,762.24 shares of Series A Preferred Stock, along with all dividends in arrears were canceled and exchanged into 1,381.12 shares of Series D Preferred Stock. Series B Mandatory Redeemable Preferred Stock: The Company has authorized 1,092 shares of Series B Mandatory Redeemable Preferred Stock. There were 268 shares of Series B Mandatory Redeemable Preferred Stock issued and outstanding at December 31, 2015 and December 31, 2014 which are shown in other liabilities. Preferential cumulative cash dividends are payable quarterly at an annual rate of $60.00 per share. Dividends accrue on each share of Series B Preferred Stock from the date of issuance and from day to day, thereafter, whether or not earned or declared. Each original holder of Series B Preferred Stock (or upon such holder’s death, their executor or personal representatives) will have the option, exercisable at their sole discretion, to sell, and the Company be obligated to redeem such holder’s shares of Series B Preferred St

Securities

Securities	12 Months Ended
	Dec. 31, 2015
Investments, Debt and Equity Securities [Abstract]
Securities	Securities The following table summarizes the fair value of available-for-sale securities, the related gross unrealized gains and losses recognized in accumulated other comprehensive income, and the amortized cost as follows: December 31, 2015 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value U.S. government agencies $ 14,629 $ 13 $ (35 ) $ 14,607 States and political subdivisions 10,190 16 (25 ) 10,181 U.S. government agency residential mortgage-backed securities 127,039 7 (1,017 ) 126,029 Collateralized residential mortgage obligations: Agency 17,990 — (157 ) 17,833 Equity securities 2,632 158 — 2,790 Corporate — — — — $ 172,480 $ 194 $ (1,234 ) $ 171,440 December 31, 2014 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value U.S. government agencies $ 21,274 $ 6 $ (171 ) $ 21,109 States and political subdivisions 8,951 78 (1 ) 9,028 U.S. government agency residential mortgage-backed securities 99,338 551 (221 ) 99,668 Collateralized residential mortgage obligations: Agency 38 — — 38 Equity securities 2,579 157 — 2,736 Collateralized debt obligations: Single issue 765 — (3 ) 762 Corporate 2,000 30 — 2,030 $ 134,945 $ 822 $ (396 ) $ 135,371 The amounts below include the activity for available-for-sale securities related to sales, maturities and calls: 2015 2014 Proceeds from calls and maturities $ 5,965 $ 2,165 Proceeds from sales 91,409 60,161 Realized gains 519 1,258 Realized losses (180 ) (329 ) Net impairment loss recognized in earnings — — The amortized cost and fair value of the investment securities portfolio are shown below by contractual maturity. Expected maturities may differ from contractual maturities if borrowers have the right to call or prepay obligations with or without call or prepayment penalties. December 31, 2015 Amortized Cost Fair Value Due in one year or less $ 2,592 $ 2,600 Due after one year through five years 9,075 9,076 Due after five years through ten years 8,173 8,151 Due after ten years 4,979 4,961 U.S. government agency residential mortgage-backed securities 127,039 126,029 Collateralized residential mortgage obligations 17,990 17,833 Equity 2,632 2,790 $ 172,480 $ 171,440 Securities with carrying values of approximately $114.9 million at December 31, 2015 and $115.9 million at December 31, 2014 were pledged to secure public deposits and securities sold under agreements to repurchase and for other purposes as required or permitted by law. At December 31, 2015 there were no holdings of securities of any one issuer, other than the U.S. Government agencies, in an amount greater than 10% of stockholders’ equity. At year-end 2014 , holdings of securities of any issuer other than U.S. government or its agencies in excess of 10% of stockholders’ equity were: $4.8 million in securities issued by Ottawa High School in Ottawa, IL. The Company does not have any securities classified as trading or held-to-maturity. Securities with unrealized losses not recognized in income are as follows presented by length of time individual securities have been in a continuous unrealized loss position: December 31, 2015 Less than 12 Months 12 Months or More Total Fair Value Unrealized Loss Fair Value Unrealized Loss Fair Value Unrealized Loss U.S. government agencies $ 10,394 $ (35 ) $ — $ — $ 10,394 $ (35 ) States and political subdivisions $ 6,057 $ (25 ) $ — $ — $ 6,057 $ (25 ) U.S. government agency residential mortgage-backed securities 124,411 (1,017 ) — — 124,411 (1,017 ) Collateralized residential mortgage obligations: Agency 17,833 (157 ) — — 17,833 (157 ) Corporate — — — — — — Total temporarily impaired $ 158,695 $ (1,234 ) $ — $ — $ 158,695 $ (1,234 ) December 31, 2014 Less than 12 Months 12 Months or More Total Fair Value Unrealized Loss Fair Value Unrealized Loss Fair Value Unrealized Loss U.S. government agencies $ 18,212 $ (157 ) $ 1,986 $ (14 ) $ 20,198 $ (171 ) States and political subdivisions 386 (1 ) — — 386 (1 ) U.S. government agency residential mortgage-backed securities 34,809 (211 ) 2,148 (10 ) 36,957 (221 ) Collateralized debt obligations: Single issue — — 762 (3 ) 762 (3 ) Total temporarily impaired $ 53,407 $ (369 ) $ 4,896 $ (27 ) $ 58,303 $ (396 ) Unrealized losses on agency bonds have not been recognized into income because the issuer(s) bonds are of high credit quality (rated AA or higher at the time of purchase), management does not intend to sell and it is not more likely than not that management would be required to sell the securities prior to their anticipated recovery, and the decline in fair value is largely due to changes in interest rates. The fair value is expected to recover as the bonds(s) approach maturity. As of December 31, 2015 , the Company’s security portfolio consisted of 59 securities, 46 of which were in an unrealized loss position. The majority of unrealized losses are related to the Company’s mortgage-backed and other securities, as discussed below: At December 31, 2015 , approximately 100.00% of the mortgage-backed securities held by the Company were issued by U.S. government-sponsored enterprises and agencies, primarily Fannie Mae and Freddie Mac, institutions which the government has affirmed its commitment to support. Because the decline in fair value is attributable to changes in interest rates and illiquidity, and not credit quality, and because the Company does not intend to sell these mortgage-backed securities and it is likely that it will not be required to sell the securities before their anticipated recovery, the Company does not consider these securities to be other-than-temporarily impaired at December 31, 2015 . At December 31, 2014 , the Company’s security portfolio consisted of 67 securities, 16 of which were in an unrealized loss position. The approximately 99.96% of unrealized losses are related to the Company’s mortgage-backed securities and were issued by U.S. government-sponsored enterprises and agencies, primarily Fannie Mae and Freddie Mac, institutions which the government has affirmed its commitment to support. Because the decline in fair value is attributable to changes in interest rates and illiquidity, and not credit quality, and because the Company does not intend to sell these mortgage-backed securities and it is likely that it will not be required to sell the securities before their anticipated recovery, the Company does not consider these securities to be other-than-temporarily impaired at December 31, 2014 .

Loans

Loans	12 Months Ended
	Dec. 31, 2015
Receivables [Abstract]
Loans	Loans The major classifications of loans follow: Aggregate Principal Amount December 31, 2015 December 31, 2014 Commercial $ 67,360 61,561 Agricultural & AGRE 50,121 53,193 Construction, land & development 26,016 13,860 Commercial RE 391,918 315,213 1-4 family mortgages 95,227 106,472 Consumer 2,905 2,901 Total Loans $ 633,547 553,200 Allowance for loan losses (8,591 ) (7,981 ) Loans, net $ 624,956 545,219 The Company has entered into agreements to sell three branches during 2016. Loans totaling $11.5 million have been identified to be included in this sale and have been excluded from the December 31, 2015 amounts in the table above. See Note 19 for further information. The credit quality indicator utilized by the Company to internally analyze the loan portfolio is the internal risk rating. Internal risk ratings of 0 to 5 are considered pass credits, a risk rating of a 6 is special mention, a risk rating of a 7 is substandard, and a risk rating of an 8 is doubtful. Loans classified as pass credits have no material weaknesses and are performing as agreed. Loans classified as special mention have a potential weakness that deserves management's close attention. If left uncorrected, these potential weaknesses may result in deterioration of the repayment prospects for the loan or of the institution's credit position at some future date. Loans classified as substandard are inadequately protected by the current net worth and paying capacity of the obligor or of the collateral pledged, if any. Loans so classified have a well-defined weakness or weaknesses that jeopardize the liquidation of the debt. They are characterized by the distinct possibility that the institution will sustain some loss if the deficiencies are not corrected. Loans classified as doubtful have all the weaknesses inherent in those classified as substandard, with the added characteristic that the weaknesses make collection or liquidation in full, on the basis of currently existing facts, conditions, and values, highly questionable and improbable. The following table presents the commercial loan portfolio by internal risk rating: December 31, 2015 Commercial Commercial Real Estate Internal Risk Rating Closed-end Lines of Credit Agriculture & AG RE Construction, Land & Development Owner- Occupied Non-Owner Occupied Total Pass $ 24,303 $ 42,374 $ 50,121 $ 25,825 $ 164,538 $ 203,679 $ 510,840 Special Mention 304 250 — 64 7,701 11,512 19,831 Substandard 129 — — 127 412 4,076 4,744 Doubtful — — — — — — — Total $ 24,736 $ 42,624 $ 50,121 $ 26,016 $ 172,651 $ 219,267 $ 535,415 December 31, 2014 Commercial Commercial Real Estate Internal Risk Rating Closed-end Lines of Credit Agriculture & AG RE Construction, Land & Development Owner- Occupied Non-Owner Occupied Total Pass $ 18,379 $ 42,076 $ 53,193 $ 13,038 $ 139,617 $ 157,340 $ 423,643 Special Mention 392 250 — — 1,225 6,620 8,487 Substandard 464 — — 822 1,480 8,931 11,697 Doubtful — — — — — — — Total $ 19,235 $ 42,326 $ 53,193 $ 13,860 $ 142,322 $ 172,891 $ 443,827 The following table presents the Retail Residential Loan Portfolio by Internal Risk Rating: Residential -- 1-4 family Senior Lien Jr. Lien & Lines of Credit Total December 31, 2015 Unrated $ 48,319 $ 41,380 $ 89,699 Special mention 4,011 168 4,179 Substandard 1,036 313 1,349 Doubtful — — — Total $ 53,366 $ 41,861 $ 95,227 Residential -- 1-4 family Senior Lien Jr. Lien & Lines of Credit Total December 31, 2014 Unrated $ 55,142 $ 45,299 $ 100,441 Special mention 3,807 120 3,927 Substandard 1,719 385 2,104 Doubtful — — — Total $ 60,668 $ 45,804 $ 106,472 The retail residential loan portfolio is generally unrated. Delinquency is a typical factor in adversely risk rating a credit to a special mention or substandard. An analysis of activity in the allowance for loan losses follows: Commercial Agriculture & AG RE Construction, Land & Development Commercial RE 1-4 Family Residential Consumer Total December 31, 2015 Beginning Balance $ 1,117 $ 69 $ 711 $ 3,999 $ 2,075 $ 10 $ 7,981 Charge-offs (384 ) — (4 ) (702 ) (667 ) (6 ) (1,763 ) Recoveries 197 3 52 1,663 52 31 1,998 Provision (282 ) 25 (236 ) 721 168 (21 ) 375 Ending Balance $ 648 $ 97 $ 523 $ 5,681 $ 1,628 $ 14 $ 8,591 Commercial Agriculture & AG RE Construction, Land & Development Commercial RE 1-4 Family Residential Consumer Total December 31, 2014 Beginning Balance $ 1,413 $ 70 $ 1,127 $ 6,834 $ 2,162 $ 31 $ 11,637 Charge-offs (2,277 ) — (953 ) (6,938 ) (1,712 ) (7 ) (11,887 ) Recoveries 373 3 35 547 65 6 1,029 Provision 1,608 (4 ) 502 3,556 1,560 (20 ) 7,202 Ending Balance $ 1,117 $ 69 $ 711 $ 3,999 $ 2,075 $ 10 $ 7,981 The following is an analysis on the balance in the allowance for loan losses and the recorded investment in impaired loans by portfolio segment based on impairment method as of December 31, 2015 and December 31, 2014 : December 31, 2015 Commercial Agriculture & AG RE Construction, Land & Development Commercial RE 1-4 Family Residential Consumer Total Allowance for loan losses: Loans individually evaluated for impairment $ 80 $ — $ 10 $ 1,178 $ 325 $ 1 $ 1,594 Loans collectively evaluated for impairment 568 97 513 4,503 1,303 13 6,997 Total ending allowance balance: $ 648 $ 97 $ 523 $ 5,681 $ 1,628 $ 14 $ 8,591 Loan balances: Loans individually evaluated for impairment $ 129 $ — $ 127 $ 4,488 $ 1,348 $ 1 $ 6,093 Loans collectively evaluated for impairment 67,231 50,121 25,889 387,430 93,879 2,904 627,454 Loans with an allowance recorded: $ 67,360 $ 50,121 $ 26,016 $ 391,918 $ 95,227 $ 2,905 $ 633,547 December 31, 2014 Commercial Agriculture & AG RE Construction, Land & Development Commercial RE 1-4 Family Residential Consumer Total Allowance for loan losses: Loans individually evaluated for impairment $ 430 $ — $ 126 $ 216 $ 783 $ — $ 1,555 Loans collectively evaluated for impairment 687 69 585 3,783 1,292 10 6,426 Total ending allowance balance: $ 1,117 $ 69 $ 711 $ 3,999 $ 2,075 $ 10 $ 7,981 Loan balances: Loans individually evaluated for impairment $ 464 $ — $ 822 $ 5,961 $ 2,056 $ — $ 9,303 Loans collectively evaluated for impairment 61,097 53,193 13,038 309,252 104,416 2,901 543,897 Loans with an allowance recorded: $ 61,561 $ 53,193 $ 13,860 $ 315,213 $ 106,472 $ 2,901 $ 553,200 Troubled Debt Restructurings: The Company had troubled debt restructurings (“TDRs”) of $0.24 million and $0.02 million as of December 31, 2015 and December 31, 2014 , respectively. Specific reserves were immaterial at December 31, 2015 and December 31, 2014 . At the years ended December 31, 2015 and 2014 all TDR loans were on nonaccrual. The Company had no commitments to lend additional amounts to a customer with an outstanding loan that is classified as TDR as of December 31, 2015 and December 31, 2014 . In the course of a year the terms of certain loans may be modified as troubled debt restructurings. The modification of the terms of such loans may include one or a combination of the following: a reduction of the stated interest rate of the loan to a below market rate or the payment modification to interest only. A modification involving a reduction of the stated interest rate of the loan would be for periods ranging from 6 months to 16 months . During the year ended December 31, 2015 , there were three TDR loans added in a total amount of $0.24 million compared to the year ended December 31, 2014 in which two loans were added as TDRs in the amount of $5.0 million . The $5.0 million of TDRs added in 2014 were subsequently sold in the fourth quarter of 2014 . The following tables present loans by class modified as troubled debt restructurings that occurred during the years ending December 31, 2015 and 2014 : For the Twelve Months Ended December 31, 2015 Number of Loans Pre-Modification Recorded Investment Post-Modification Recorded Investment 1-4 family residential Senior lien 3 241 241 Total 3 $ 241 $ 241 The troubled debt restructurings described above did not have a material impact to the allowance for loan losses and did not result in any additional charge-off’s during the year ended December 31, 2015 . For the Twelve Months Ended December 31, 2014 Number of Loans Pre-Modification Recorded Investment Post-Modification Recorded Investment Construction, land & development 1 $ 5,013 $ 5,013 1-4 family residential Jr. lien & lines of credit 1 34 34 Total 2 $ 5,047 $ 5,047 The troubled debt restructurings described above did not have a material impact to the allowance for loan losses and did not result in any additional charge-off’s during the year ended December 31, 2014 . A loan is considered to be in payment default once it is 90 days contractually past due under the modified terms. In the years ended December 31, 2015 and December 31, 2014 there were no loans modified as troubled debt restructurings for which there was a payment default within twelve months following the modification. The Company evaluates loan modifications to determine if the modification constitutes a troubled debt restructure. A loan modification constitutes a troubled debt restructure if the borrower is experiencing financial difficulty and the Company grants a concession it would not otherwise consider. In order to determine whether a borrower is experiencing financial difficulty, an evaluation is performed of the probability that the borrower will be in payment default on any of its loans with the Company’s debt in the foreseeable future without the modification. This evaluation is performed under the Company’s internal underwriting guidelines. TDRs are separately identified for impairment disclosures. If a loan is considered to be collateral dependent loan, the TDR is reported, net, at the fair value of the collateral. The following tables present data on impaired loans: December 31, 2015 Recorded Investment Unpaid Principal Balance Related Allowance Average Recorded Investment Interest Income Recognized Cash Basis Interest Recognized Loans with no related allowance recorded: Commercial Closed-end $ 2 $ 2 $ — $ 15 $ 1 $ 1 Line of credit — — — — — — Agricultural & AG RE — — — — — — Construction, land & development — — — 299 — — CRE - all other Owner occupied 6 6 — 78 — — Non-owner occupied — — — — — — 1-4 family residential Senior lien 176 176 — 277 — — Jr. lien & lines of credit 71 71 — 88 3 3 Consumer — — — — — — Subtotal 255 255 — 757 4 4 Loans with an allowance recorded: Commercial Closed-end $ 127 $ 127 $ 80 $ 199 $ 2 $ 2 Line of credit — — — — — — Agricultural & AG RE — — — — — — Construction, land & development 127 419 10 120 — — CRE - all other Owner occupied 406 541 100 586 11 9 Non-owner occupied 4,076 4,955 1,078 4,101 17 17 1-4 family residential Senior lien 859 984 215 1,003 14 10 Jr. lien & lines of credit 242 242 110 230 5 5 Consumer 1 — 1 — — — Subtotal 5,838 7,268 1,594 6,239 49 43 Total $ 6,093 $ 7,523 $ 1,594 $ 6,996 $ 53 $ 47 December 31, 2014 Recorded Investment Unpaid Principal Balance Related Allowance Average Recorded Investment Interest Income Recognized Cash Basis Interest Recognized Loans with no related allowance recorded: Commercial Closed-end $ 5 $ 5 $ — $ 15 $ — $ — Line of credit — — — — — — Agricultural & AG RE — — — — — — Construction, land & development 648 1,122 — 221 11 11 CRE - all other Owner occupied 221 261 — 3,337 10 9 Non-owner occupied 4,354 4,753 — 4,084 74 74 1-4 family residential Senior lien 319 319 — 1,931 5 4 Jr. lien & lines of credit 120 120 — 142 6 6 Consumer — — — — — — Subtotal 5,667 6,580 — 9,730 106 104 Loans with an allowance recorded: Commercial Closed-end $ 459 $ 459 $ 430 $ 1,228 $ 4 $ 4 Line of credit — — — 940 — — Agricultural & AG RE — — — — — — Construction, land & development 174 332 126 3,833 — — CRE - all other Owner occupied 766 901 138 3,305 2 — Non-owner occupied 620 620 78 7,737 2 — 1-4 family residential Senior lien 1,352 1,352 660 2,032 36 32 Jr. lien & lines of credit 265 276 123 268 10 9 Consumer — — — — — — Subtotal 3,636 3,940 1,555 19,343 54 45 Total $ 9,303 $ 10,520 $ 1,555 $ 29,073 $ 160 $ 149 The Company determined that there were $0.1 million of loans that were classified as impaired but were considered to be performing (i.e., loans which are accruing interest) loans at December 31, 2015 compared to $1.6 million at December 31, 2014 . The following table represents activity related to loan portfolio aging: December 31, 2015 30 - 59 Days Past Due 60 - 89 Days Past Due 90 Days Past Due or Nonaccrual Total Past Due Current Total Loans Commercial Closed-end $ 58 $ — $ 130 $ 188 $ 24,548 $ 24,736 Line of credit — — — — 42,624 42,624 Agricultural & AG RE — — — — 50,121 50,121 Construction, land & development — — 127 127 25,889 26,016 CRE - all other Owner occupied 985 — 412 1,397 171,254 172,651 Non-owner occupied — — 4,076 4,076 215,191 219,267 1-4 family residential Senior lien 1,481 21 994 2,496 50,870 53,366 Jr. lien & lines of credit 230 258 268 756 41,105 41,861 Consumer 1 1 — 2 2,903 2,905 Total $ 2,755 $ 280 $ 6,007 $ 9,042 $ 624,505 $ 633,547 December 31, 2014 30 - 59 Days Past Due 60 - 89 Days Past Due 90 Days Past Due or Nonaccrual Total Past Due Current Total Loans Commercial Closed-end $ 38 $ — $ 450 $ 488 $ 18,747 $ 19,235 Line of credit — — — — 42,326 42,326 Agricultural & AG RE 150 — — 150 53,043 53,193 Construction, land & development 231 — 822 1,053 12,807 13,860 CRE - all other Owner occupied 319 175 739 1,233 141,089 142,322 Non-owner occupied 153 — 4,354 4,507 168,384 172,891 1-4 family residential Senior lien 1,172 277 1,068 2,517 58,151 60,668 Jr. lien & lines of credit 423 64 316 803 45,001 45,804 Consumer — — — — 2,901 2,901 Total $ 2,486 $ 516 $ 7,749 $ 10,751 $ 542,449 $ 553,200 Nonperforming loans include both smaller balance homogeneous loans that are collectively evaluated for impairment and individually classified impaired loans. There were no loans past due over 90 days and still accruing interest at the years ending December 31, 2015 and December 31, 2014 . Loans made to executive officers, directors, and their affiliates during 2015 were as follows: Beginning balance $ 81 New loans, extensions, and modification 17 Repayments — Effect of changes in composition of related parties (52 ) Ending balance $ 46

Fair Value

Fair Value	12 Months Ended
	Dec. 31, 2015
Fair Value Disclosures [Abstract]
Fair Value	Fair Value The Company measures, monitors, and discloses certain of its assets and liabilities on a fair value basis. Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. The Company maximizes the use of observable inputs and minimizes the use of unobservable inputs when measuring fair value. Fair value guidance establishes a fair value hierarchy that prioritizes the inputs used to measure fair value into three broad levels based on the reliability of the input assumptions. The hierarchy gives the highest priority to level 1 measurements and the lowest priority to level 3 measurements and the categorization of where an asset or liability falls within the hierarchy is based on the lowest level of input that is significant to the fair value measurement. The three levels of the fair value hierarchy are defined as follows: Level 1 - Unadjusted quoted prices for identical assets or liabilities traded in active markets. Level 2 - Observable inputs other than level 1 prices, such as quoted prices for similar instruments; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the asset or liability. Level 3 - Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities. The Company used the following methods and significant assumptions to estimate the fair value of each type of financial instrument: Securities Available for Sale Securities. The fair value of securities available for sale is determined by obtaining quoted prices on nationally recognized securities exchanges (Level 1 inputs) or matrix pricing, which is a mathematical technique widely used in the industry to value debt securities without relying exclusively on quoted prices for the specific securities but rather by relying on the securities’ relationship to other benchmark quoted securities (Level 2 inputs). If the securities could not be priced using quoted market prices, observable market activity or comparable trades, the financial market was considered not active and the assets were classified as Level 3. Single Issue Trust Preferred. In 2010 the Company purchased single-issue trust preferred securities that are classified as available for sale. With respect to these securities, the Company looks at rating agency actions, payment history, the capital levels of the banks and the financial performance as filed in regulatory reports. At December 31, 2014 , the Company still held $0.8 million of these securities. During 2015 , the last of the Company’s single-issue trust preferred securities were called and at December 31, 2015 none were held in the securities portfolio. Assets and Liabilities Measured at Fair Value on a Recurring Basis The following table summarizes, by measurement hierarchy, the various assets and liabilities of the Company that are measured at fair value on a recurring basis: Carrying Amount Quoted Prices in Active Markets For Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) December 31, 2015 U.S. government agencies $ 14,607 $ — $ 14,607 $ — State and political subdivisions 10,181 — 10,181 — U.S. government agency residential mortgage-backed securities 126,029 — 126,029 — Collateralized mortgage obligations: Agency 17,833 — 12,812 5,021 Equities 2,790 — 2,790 — Available-for-sale securities $ 171,440 $ — $ 166,419 $ 5,021 Carrying Amount Quoted Prices in Active Markets For Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) December 31, 2014 U.S. government agencies $ 21,109 $ — $ 21,109 $ — State and political subdivisions 9,028 — 9,028 — U.S. government agency residential mortgage-backed securities 99,668 — 99,668 — Collateralized mortgage obligations: Agency 38 — 38 — Equities 2,736 — 2,736 — Collateralized debt obligations: Single Issue 762 — 762 — Corporate 2,030 — 2,030 — Available-for-sale securities $ 135,371 $ — $ 135,371 $ — There were no transfers between Level 1 and Level 2 during 2015 or 2014 . Assets and Liabilities Measured at Fair Value on a Recurring Basis Using Significant Unobservable Inputs The following table reconciles the beginning and ending balances of the assets of the Company that are measured at fair value on a recurring basis using significant unobservable inputs. There currently are no liabilities of the Company that are measured at fair value on a recurring basis using significant unobservable inputs. Securities Available for Sale CDOs 2015 2014 Beginning balance, January 1 $ — $ 169 Transfers into Level 3 — — Total gains or losses (realized/unrealized) included in earnings Sales — (169 ) Security impairment — — Payment received — — Other changes in fair value — — Included in other comprehensive income — — Ending Balance, December 31 $ — $ — For the period ended December 31, 2015 , the Company had $5.0 million of local school district bonds that are measured at fair value on a recurring basis using unobservable inputs. Assets Measured at Fair Value on a Non-Recurring Basis The following table summarizes, by measurement hierarchy, financial assets of the Company that are measured at fair value on a non-recurring basis. Carrying Amount Quoted Prices in Active Markets For Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) December 31, 2015 Impaired loans 1-4 family residential Senior lien 572 — — 572 OREO property CRE - construction, land & development 1,140 — — 1,140 Non-owner occupied 468 — — 468 1-4 family residential Senior lien 131 — — 131 Carrying Amount Quoted Prices in Active Markets For Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) December 31, 2014 Impaired loans CRE - all other Owner occupied $ 184 $ — $ — $ 184 Non-owner occupied 542 — — 542 1-4 family residential Senior lien 201 — — 201 OREO property CRE - construction, land & development 2,823 — — 2,823 CRE - all other Owner occupied 488 — — 488 Non-owner occupied 1,111 — — 1,111 1-4 family residential Senior lien 47 — — 47 At the time a loan is considered impaired, it is valued at the lower of cost or fair value. Impaired loans carried at fair value generally receive specific allocations of the allowance for loan losses. For collateral dependent loans, fair value is commonly based on recent real estate appraisals. These appraisals may utilize a single valuation approach or a combination of approaches including comparable sales and the income approach. Adjustments are routinely made in the appraisal process by the independent appraisers to adjust for differences between the comparable sales and income data available. Such adjustments are usually significant and typically result in a Level 3 classification of the inputs for determining fair value. Non-real estate collateral may be valued using an appraisal, net book value per the borrower’s financial statements, or aging reports, adjusted or discounted based on management’s historical knowledge, changes in market conditions from the time of the valuation, and management’s expertise and knowledge of the client and client’s business, resulting in a Level 3 fair value classification. Impaired loans are evaluated on a quarterly basis for additional impairment and adjusted accordingly. Impaired loans had a carrying amount of $0.6 million with a specific loan loss allocation of $0.3 million at December 31, 2015 , resulting in an additional provision for loan losses of $0.1 million for the twelve month period. In 2014 impaired loans had a carrying amount of $0.9 million with a specific loan loss allocation of $0.5 million during 2014 , resulting in an additional provision for loan losses of $0.5 million for the year ended December 31, 2014 . The majority of our impaired loans are collateralized by real estate. Assets acquired through or instead of loan foreclosure are initially recorded at fair value less costs to sell when acquired, establishing a new cost basis. Any write-downs in the carrying value of a property at the time of acquisition are charged against the allowance for loan losses. These assets are subsequently accounted for at lower of cost or fair value less estimated costs to sell. Management periodically reviews the carrying value of other real estate owned. Any write-downs of the properties subsequent to acquisition, as well as gains or losses on disposition and income or expense from the operations of other real estate owned, are recognized in operating results in the period they are realized. Fair value is commonly based on recent real estate appraisals. These appraisals may utilize a single valuation approach or a combination of approaches including comparable sales and the income approach. Adjustments are routinely made in the appraisal process by the independent appraisers to adjust for differences between the comparable sales and income data available. Such adjustments are usually significant and typically result in a Level 3 classification of the inputs for determining fair value. OREO properties measured at fair value, less costs to sell, had a net carrying amount of $1.7 million which is made up of the outstanding balance of $2.9 million , net of a valuation allowance of $1.2 million at December 31, 2015 . This compares to 2014 when OREO properties with an outstanding balance of $6.0 million was written down to a fair value of $4.5 million . The following table presents quantitative information about Level 3 fair value measurements for financial instruments measured at fair value on a non-recurring basis at December 31, 2015 and December 31, 2014 : December 31, 2015 Fair Value Valuation Technique Unobservable Inputs Range (Weighted Average) Impaired loans Sales comparison approach Adjustment for differences between comparable sales 1-4 family residential Senior lien 572 10% - 60% (17%) OREO property CRE - construction, land & development 1,140 5% - 70% (27%) CRE - all other Non-owner occupied 468 5% - 50% (16%) 1-4 family residential Senior lien 131 6% - 55% (30%) December 31, 2014 Fair Value Valuation Technique Unobservable Inputs Range (Weighted Average) Impaired loans Sales comparison approach Adjustment for differences between comparable sales CRE - all other Owner occupied $ 184 10% - 55% (19%) Non-owner occupied 542 10% - 55% (11%) 1-4 family residential Senior lien 201 10% - 60% (57%) OREO property CRE - construction, land & development $ 2,823 5% - 70% (25%) CRE - all other Owner occupied 488 15% - 55% (21%) Non-owner occupied 1,111 5% - 50% (20%) 1-4 family residential Senior lien 47 6% - 55% (38%) The estimated fair values of the Company’s financial instruments are as follows: Fair Value measurements at December 31, 2015 Using Carrying Value Level 1 Level 2 Level 3 Total Financial assets Cash and cash equivalents $ 27,655 $ 27,655 $ — $ — $ 27,655 Securities 171,440 — 166,419 5,021 171,440 Restricted securities 9,116 — — — NA Loans held for sale 735 — 760 — 760 Net loans 624,956 — — 629,017 629,017 Accrued interest receivable 3,012 — 402 2,610 3,012 Financial liabilities Deposits $ 718,504 $ — $ 718,689 $ — $ 718,689 Federal funds purchased and securities sold under agreements to repurchase 18,730 — 18,730 — 18,730 Federal Home Loan Bank advances 76,000 — 76,271 — 76,271 Subordinated debentures 20,620 — — 13,933 13,933 Series B mandatorily redeemable preferred stock 268 — 273 — 273 Accrued interest payable 235 — 169 66 235 Fair Value measurements at December 31, 2014 Using Carrying Value Level 1 Level 2 Level 3 Total Financial assets Cash and cash equivalents $ 49,167 $ 44,167 $ 5,000 $ — $ 49,167 Securities 135,371 — 135,371 — 135,371 Restricted securities 6,102 — — — NA Loans held for sale 364 — 379 — 379 Net loans 545,219 — — 553,447 553,447 Accrued interest receivable 2,417 — 336 2,081 2,417 Financial liabilities Deposits $ 698,824 $ — $ 699,471 $ — $ 699,471 Federal funds purchased and securities sold under agreements to repurchase 26,691 — 26,691 — 26,691 Federal Home Loan Bank advances 20,000 — 20,546 — 20,546 Notes payable 10,250 — — 10,264 10,264 Subordinated debentures 20,620 — — 13,851 13,851 Series B mandatorily redeemable preferred stock 268 — 268 — 268 Accrued interest payable 5,142 — 369 4,773 5,142 Other assets and liabilities of the Company that are not defined as financial instruments are not included in the above disclosures, such as property and equipment. In addition, nonfinancial instruments typically not recognized in financial statements nevertheless may have value but are not included in the above disclosures. These include, among other items, the estimated earning potential of core deposit accounts, the earnings potential of loan servicing rights, the earnings potential of the trust operations, customer goodwill and similar items. The methods and assumptions, not previously presented, used to estimate fair values are described as follows: (a) Cash and Cash Equivalents The carrying amounts of cash and short-term instruments approximate fair values and are classified as either Level 1 or Level 2. As of December 31, 2015 and December 31, 2014 ; $27.7 million and $44.2 million was classified as Level 1. (b) Restricted securities It is not practical to determine the fair value of restricted securities due to the restrictions placed on its transferability. (c) Loans Fair values of loans, excluding loans held for sale, are estimated as follows: Fair values for loans are estimated using discounted cash flow analysis, using interest rates currently being offered for loans with similar terms to borrowers of similar credit quality resulting in a Level 3 classification. Impaired loans are valued at the lower of cost or fair value as described previously. The methods utilized to estimate the fair value of loans do not necessarily represent an exit price. The fair value of loans held for sale is estimated based upon binding contracts and quotes from third party investors resulting in a Level 2 classification. (d) Deposits The fair values disclosed for demand deposits (e.g., interest and non-interest checking, passbook savings, and certain types of money market accounts) are, by definition, equal to the amount payable on demand at the reporting date (i.e., their carrying amount) resulting in a Level 2. Fair values for fixed rate certificates of deposit are estimated using a discounted cash flows calculation that applies interest rates currently being offered on certificates to a schedule of aggregated expected monthly maturities on time deposits resulting in a Level 2 classification. (e) Short-term Borrowings The carrying amounts of federal funds purchased, borrowings under repurchase agreements, and other short-term borrowings, generally maturing within ninety days, approximate their fair values resulting in a Level 2 classification. (f) Other Borrowings The fair values of the Company’s long-term borrowings are estimated using discounted cash flow analyses based on the current borrowing rates for similar types of borrowing arrangements resulting in a Level 2 classification. The fair values of the Company’s Subordinated Debentures are estimated using discounted cash flow analyses based on the current borrowing rates for similar types of borrowing arrangements resulting in a Level 3 classification. (g) Accrued Interest Receivable/Payable The carrying amounts of accrued interest approximate fair value resulting in a Level 2 or Level 3 classification which is consistent with the underlying asset/liability they are associated with. (h) Off-balance Sheet Instruments Fair values for off-balance sheet, credit-related financial instruments are based on fees currently charged to enter into similar agreements, taking into account the remaining terms of the agreements and the counterparties’ credit standing. The fair value of commitments is not material.

Loan Sales and Servicing

Loan Sales and Servicing	12 Months Ended
	Dec. 31, 2015
Transfers and Servicing [Abstract]
Loan Sales and Servicing	Loan Sales and Servicing Loans held for sale at year end related to our secondary mortgage market activities, located in the "Loans held for sale" section of our balance sheet, are as follows: December 31, 2015 2014 Loans held for sale $ 735 $ 364 Less: Allowance to adjust to lower of cost or fair value — — Loans held for sale, net $ 735 $ 364 Mortgage loans serviced for others are not included in the accompanying consolidated balance sheet. The unpaid principal balances of these loans are summarized as follows: December 31, 2015 2014 Federal Home Loan Mortgage Corporation $ 17,614 $ 21,814 Federal National Mortgage Association 266,307 280,723 $ 283,921 $ 302,537 Custodial escrow balances maintained in connection with serviced loans were $2.36 million and $2.38 million at year-end 2015 and 2014 . Following is an analysis of the changes in originated mortgage servicing rights: Years Ended December 31, 2015 2014 Balance at beginning of year $ 2,240 $ 2,301 Originated mortgage servicing rights 230 232 Amortization (341 ) (293 ) Balance at end of year $ 2,129 $ 2,240 Management periodically evaluates mortgage servicing rights for impairment. For purposes of measuring impairment, servicing assets are stratified by loan type. Impairment is recognized if the carrying value of servicing assets exceeds the fair value of the stratum. The fair value of capitalized mortgage servicing rights was $2.2 million and $2.3 million at December 31, 2015 and 2014 , respectively. Fair value was determined using discount rates ranging from 10.50% to 16.50% and prepayment speeds ranging from 14.80% to 15.72% depending on the stratification of the specific right in 2015 . The discount rates used in 2014 ranged from 11.00% to 17.00% and the prepayment speeds used were between 17.03% and 18.09% . Estimated amortization expense for each of the next five years is as follows: 2016 $ 400 2017 270 2018 240 2019 230 2020 245 $ 1,385 There were no repurchases required in 2015 and 2014 . At December 31, 2015 , management believes any recourse obligations to be immaterial.

Premises and Equipment

Premises and Equipment	12 Months Ended
	Dec. 31, 2015
Property, Plant and Equipment [Abstract]
Premises and Equipment	Premises and Equipment Premises and equipment consisted of: December 31, 2015 2014 Land $ 8,315 $ 9,426 Buildings 14,118 19,464 Furniture and equipment 13,188 13,133 Work in Process 84 401 35,705 42,424 Less accumulated depreciation 18,853 19,798 $ 16,852 $ 22,626 Depreciation expense on premises and equipment totaled $1.2 million in 2015 and $1.4 million in 2014 . The Company has entered into agreements to sell three branches during 2016. A total of $5.1 million of Premises and Equipment is anticipated to be included in the sale and has been excluded from the December 31, 2015 amounts reported above. No loss was recorded upon the transfer to branch assets held for sale. See Note 19 for further information.

Deposits

Deposits	12 Months Ended
	Dec. 31, 2015
Banking and Thrift [Abstract]
Deposits	Deposits Time certificate of deposits in denominations of $250 thousand or more were $35.2 million and $41.4 million at December 31, 2015 and December 31, 2014 . At December 31, 2015 , the scheduled maturities of time deposits are as follows: 2016 $ 132,611 2017 42,092 2018 6,080 2019 4,063 2020 2,485 $ 187,331 At December 31, 2015 and 2014 , brokered deposits account for $21.3 million and $25.2 million , respectively. Deposits from principal officers, directors and their affiliates at year end 2015 and 2014 were $0.8 million and $1.2 million .

Securities Sold Under Agreement

Securities Sold Under Agreements To Repurchase	12 Months Ended
	Dec. 31, 2015
Banking and Thrift [Abstract]
Securities Sold Under Agreements To Repurchase	Securities Sold Under Agreements To Repurchase Securities sold under agreements to repurchase are financing arrangements that generally mature within 90 days . Repurchase agreements are secured by U.S. Treasury and U.S. Agency securities and, if required, are held in third party pledge accounts. At maturity, the securities underlying the agreements are returned to the Company. Securities sold under agreements to repurchase had a carrying value of $18.7 million at December 31, 2015 and $26.7 million at year-end 2014 . These agreements are secured by mortgage-backed securities. The securities underlying the agreements remain in the respective asset accounts. As of December 31, 2015 , the Company had no counterparties with amounts at risk under repurchase agreements that exceeded 10% of stockholders’ equity. 2015 2014 Average daily balance during the period $ 18,144 $ 18,560 Average interest rate during the period 0.27 % 0.29 % Maximum month end balance during the period $ 20,832 $ 26,691 Weighted average interest rate at period-end 0.26 % 0.28 % At December 31, 2015 , securities sold under agreements to repurchase are secured by $25.3 million of U.S. government agency residential mortgage-backed securities. The contractual maturity of these agreements are overnight and continuous. The fair value of securities pledged to secure repurchase agreements may decline. The Company manages this risk by having a policy to pledge securities valued at 15% above the gross outstanding balance of repurchase agreements.

Borrowed Funds and Debt Obligat

Borrowed Funds and Debt Obligations	12 Months Ended
	Dec. 31, 2015
Debt Disclosure [Abstract]
Borrowed Funds and Debt Obligations	Borrowed Funds and Debt Obligations At December 31, 2015 and December 31, 2014 no FHLB advances had any call provisions. The Company maintains a collateral pledge agreement covering secured advances whereby the Company had $167.7 million collateral credited to the Company by the FHLB at December 31, 2015 . The Company has pledged $291.6 million of first mortgage loans on property free of all other pledges, liens, and encumbrances (not more than 90 days delinquent). The Company had no variable rate advances at December 31, 2015 and year-end 2014 . The advances are at fixed rates ranging from 0.21% to 3.64% at December 31, 2015 and 1.66% to 3.64% at year-end 2014 . The scheduled maturities of advances from the FHLB are as follows: December 31, 2015 December 31, 2014 Year Average Interest Rate Amount Average Interest Rate Amount 2015 — % — — % — 2016 0.70 60,000 1.66 15,000 2017 1.14 11,000 — — 2018 3.64 5,000 3.64 5,000 2019 — — — — Thereafter — — — — 0.96 $ 76,000 2.16 $ 20,000 Of the $60.0 million of FHLB advances with maturities in 2016 at December 31, 2015 , $40.0 million has matured and been renewed. Notes payable consisted of the following for the period ending December 31, 2014 : December 31, 2014 Term note ($250) from another financial institution; interest due quarterly at the 90-day LIBOR plus 2.95% with a floor of 6.50% at year-end 2014; secured by 100% of the stock of Centrue Bank. The balance was settled on March 31, 2015. See Note 1 for additional disclosure. $ 250 Subordinated debt note ($10,000) from another financial institution; interest due quarterly at the 90-day LIBOR plus 2.95%, which was 3.19% at December 31, 2014. The balance was settled on March 31, 2015. See Note 1 for additional disclosure. $ 10,000 $ 10,250 During the period ended December 31, 2015 , in connection with the settlement of obligations involving another financial institution, the Company recognized a gain of $1.8 million representing the difference between the fair value of the consideration issued in the settlement transaction and the carrying value of the amounts due to another financial institution. As a result, the gain has been included as ‘‘Gain on extinguishment of debt’’ within income from continuing operations in the accompanying Consolidated Statements of Income (Loss) for the period ended December 31, 2015 . As of December 31, 2014 , the Company has $10.3 million outstanding per a loan agreement dated March 31, 2008. The first credit facility consisted of a $0.3 million secured term facility, matured on March 31, 2015. The second credit facility consisted of $10.0 million in subordinated debt, which also matured on March 31, 2015. On December 14, 2009, Bank of America transferred to Cole Taylor Bank, currently known as MB Financial, all rights, title, interest into and under the loan agreements dated March 31, 2008. Repayment of the two credit facilities was interest only on a quarterly basis, with the principal amount of the loan due at maturity. The term credit facility was secured by a pledge of the stock of the Bank. The subordinated debt credit facility was unsecured and had qualified as Tier II capital for regulatory purposes. At December 31, 2014 , the Company was in compliance with all covenants. Information concerning borrowed funds is as follows: 2015 2014 Advances from the Federal Home Loan Bank Maximum month-end balance during the period $ 110,000 $ 35,000 Average balance during the period 64,370 26,466 Weighted average interest rate for the period 0.82 % 1.70 % Weighted average interest rate at period end 0.96 % 2.16 % Notes Payable Maximum month-end balance during the period $ 10,250 $ 10,250 Average balance during the period 2,499 10,250 Weighted average interest rate for the period 3.36 % 3.31 % Weighted average interest rate at period end — % 3.27 %

Subordinated Debentures

Subordinated Debentures	12 Months Ended
	Dec. 31, 2015
Other Liabilities Disclosure [Abstract]
Subordinated Debentures	Subordinated Debentures The Company has two $10.0 million trust preferred issuances that were issued in April 2004 and April 2007 in cumulative trust preferred securities through special-purpose trusts Centrue Statutory Trust II (Trust II) and Centrue Statutory Trust III (Trust III). The proceeds of the offerings were invested by the trusts in junior subordinated deferrable interest debentures of Trust II and Trust III totaling $20.6 million . Trust II and Trust III are wholly-owned subsidiaries of the Company, and their sole assets are the junior subordinated deferrable interest debentures. Distributions are cumulative and are payable quarterly at a variable rate of 2.65% over the LIBOR rate of 0.52575% for Trust II and a variable rate of 1.65% over the LIBOR rate of 0.32550% for Trust III, respectively, (at a rate of 3.18% and 1.98% at December 31, 2015 and 2.89% and 1.89% at December 31, 2014) per annum of the stated liquidation amount of $1,000 per preferred security. The interest rate for the Trust III debentures was fixed for five years and then transitioned to a variable rate as stated above in July of 2012. Interest expense on the trust preferred securities was $0.5 million for year ended December 31, 2015 and $0.6 million for 2014. During the third quarter of 2009, the Company began deferring the interest payments on these instruments. The permitted five year default period expired in the third quarter of 2014 resulting in the Company being in default on these debentures. All interest was accrued as of December 31, 2014 for a total of $4.8 million . On March 31, 2015, the accrued interest was made current on each trust preferred security through the most recent quarterly due date and were fully reinstated out of default status. As of December 31, 2015, the accrued interest was $0.1 million . The obligations of the trust are fully and unconditionally guaranteed, on a subordinated basis, by the Company. See Note 1 for additional disclosure related to the deferred interest. The trust preferred securities for the Trust II are redeemable upon the maturity of the debentures on April 22, 2034, or to the extent of any earlier redemption of any debentures by the Company, and are callable beginning April 22, 2009. The trust preferred securities for Trust III are redeemable upon the maturity of the debentures on April 19, 2037, or to the extent of any earlier redemption of any debentures by the Company, and are callable beginning April 19, 2012. Holders of the capital securities have no voting rights, are unsecured, and rank junior in priority of payment to all of the Company’s indebtedness and senior to the Company’s capital stock. For regulatory purposes, the trust preferred securities qualify as Tier 1 capital subject to certain provisions. In accordance with accounting guidelines, the trusts are not consolidated with the Company’s consolidated financial statements, but rather the subordinated debentures are shown as a liability and the Company’s investment in the common stock for the trusts of $0.6 million is included in other assets.

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes Income tax expense (benefit) consisted of: Years Ended December 31, 2015 2014 Federal Current $ 126 $ — Deferred (126 ) (1,685 ) — (1,685 ) State Current — — Deferred — (371 ) — (371 ) Change in valuation allowance (37,484 ) 2,056 $ (37,484 ) $ — The Company's income tax expense differed from the statutory federal rate of 34% as follows: Years Ended December 31, 2015 2014 Expected income taxes $ 1,740 $ (1,534 ) Income tax effect of Change in valuation allowance — 2,056 Valuation allowance reversal (39,759 ) — Interest earned on tax-free investments and loans (67 ) (91 ) Nondeductible interest expense incurred to carry tax-free investments and loans 1 2 State income taxes, net of federal tax benefit 191 (265 ) Earnings on Bank-owned life insurance (304 ) (302 ) Nondeductible meals and health club dues 33 23 Section 382 limitations 370 — Impact of state apportionment change 193 — Other 118 111 $ (37,484 ) $ — The significant components of deferred income tax assets and liabilities consisted of: December 31, 2015 December 31, 2014 Deferred tax assets Allowance for loan losses $ 3,342 $ 3,107 Deferred compensation, other 74 104 Stock based expense 87 130 Net operating loss carryforwards 34,180 36,955 Securities available-for-sale 405 — Deferred tax credits 823 697 OREO valuation allowance 1,059 1,080 Donation carryforward 5 232 Capital loss carryforward 4 4 Other 246 45 Total deferred tax assets 40,225 42,354 Deferred tax liabilities Depreciation $ (58 ) $ (41 ) Adjustments arising from acquisitions (146 ) (502 ) Mortgage servicing rights (828 ) (872 ) Securities available-for-sale — (166 ) Federal Home Loan Bank dividend received in stock (450 ) (451 ) Deferred loan fees & costs (399 ) (373 ) Prepaid expenses (164 ) (190 ) Total deferred tax liabilities (2,045 ) (2,595 ) Valuation allowance — (39,759 ) Net deferred tax assets $ 38,180 $ — In accordance with current income tax accounting guidance, the Company assessed whether a valuation allowance should be established against their deferred tax assets (DTAs) based on consideration of all available evidence using a “more likely than not” standard. The most significant portions of the deductible temporary differences relate to (1) net operating loss carryforwards and (2) the allowance for loan losses. In assessing the need for a valuation allowance, both the positive and negative evidence about the realization of DTAs were evaluated. The ultimate realization of DTAs is based on the Company’s ability to carryback net operating losses to prior tax periods, tax planning strategies that are prudent and feasible, the reversal of deductible temporary differences that can be offset by taxable temporary differences and future taxable income. After evaluating all of the factors previously summarized and considering the weight of the positive evidence compared to the negative evidence, the Company has determined a full valuation adjustment was necessary as of December 31, 2014 . The Company concluded it was more likely than not that it will utilize the net deferred tax assets as of December 31, 2015 . Therefore, it reversed the $38.2 million valuation allowance on the net deferred tax assets in the fourth quarter of 2015. The factors leading to this conclusion are positive three year cumulative pre-tax earnings as of December 31, 2015; significantly improved asset quality and capital position; positive loan growth throughout 2015, availability of prudent and feasible tax planning strategies, and future taxable income strategies. At December 31, 2015 and 2014 , federal net operating loss carry forwards includes $1.4 million and $3.6 million , respectively, related to the Illinois Community Bancorp Inc. acquisition. The federal NOL carry forward expires in 2020 thru 2024, and can be used at a rate of $0.16 million per year based on Section 382 limitations. The rest of the federal NOL carry forward represents losses of $24.4 million , $20.1 million , $6.3 million , $29.9 million and $9.2 million generated in 2010, 2011, 2012, 2013 and 2014, respectively, which will begin to expire in 2030. At December 31, 2015 , net operating loss carry forwards also includes $11.1 million , $25.5 million , $14.7 million , $4.6 million , $22.9 million and $6.7 million in state of Illinois loss carry forwards generated in 2009, 2010, 2011, 2012, 2013 and 2014, respectively, that have a twelve year carry forward period. New tax laws in Illinois have deferred carry forwards for the years 2011 through 2013; therefore, they will begin to expire after 2022. The Company does not have any material uncertain tax positions or unrecognized tax benefits for additional disclosure in the consolidated financial statements. The Company does not expect the total amount of unrecognized tax benefits to significantly increase or decrease in the next twelve months . The deferred tax credits represent $0.8 million in Alternative Minimum Tax credit carry forwards generated in 2007, 2008 and 2015. These credits can be carried forward indefinitely. A donation carry forward of $0.4 million generated in 2009 expired unused in 2014. Also, donation carry forwards of $0.6 million generated in 2010 through 2015 were converted to NOL carryforwards, which extended their expiration periods. During 2015 and 2014 , no interest or penalties were recorded in the income statement. There were no amounts accrued for interest and penalties at December 31, 2015 and December 31, 2014 . The Company is no longer subject to examination by federal or state taxing authorities for the tax year 2012 and the years prior.

Benefit Plans

Benefit Plans	12 Months Ended
	Dec. 31, 2015
Compensation and Retirement Disclosure [Abstract]
Benefit Plans	Benefit Plans The Company has a 401(k) salary reduction plan (the 401(k) plan) covering substantially all employees. Eligible employees may elect to make tax deferred and/or Roth after-tax contributions up to annual IRS contribution limits subject to the results of plan testing. In 2015 , the Company accrued 2% of employee eligible wages for employees who met certain eligibility requirements at December 31, 2015 resulting in an accrual of $0.3 million at December 31, 2015 . This amount was posted to participants accounts in February 2016. In 2014 , the Company accrued 1% of employee eligible wages for employees who met certain eligibility requirements at December 31, 2014 . Contributions of approximately $0.1 million were posted to participant accounts in February 2015 . The Company also entered into certain non-qualified deferred compensation agreements with members of the senior management team. The Company may make discretionary matching contributions with respect to a portion of the participant’s deferral. Additionally, the Company continues its non-qualified deferred compensation plan for the directors. These agreements, which are subject to the rules of Internal Revenue Code Section 409A, relate to the voluntary deferral of compensation received. The accrued liability for both deferral plans as of December 31, 2015 was $0.03 million and at December 31, 2014 was $0.08 million . There was no Company match for the employee deferred compensation plan in 2015 and 2014 and none is projected for 2016 . In conjunction with the March 31, 2015 recapitalization which triggered certain change of control provisions, three executives had full balance payouts and two directors had partial balance payouts for aggregate payouts of $38,010 and $16,850 , respectively.

Share Based Compensation

Share Based Compensation	12 Months Ended
	Dec. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Share Based Compensation	Share Based Compensation In April 2003, the Company adopted the 2003 Option Plan. Under the 2003 Option Plan, as amended on April 24, 2007, nonqualified options, incentive stock options, restricted stock and/or stock appreciation rights may be granted to employees and outside directors of the Company and its subsidiaries to purchase the Company's common stock at an exercise price to be determined by the executive and compensation committee. Pursuant to the 2003 Option Plan, 19,000 shares of the Company's unissued common stock had been reserved and were available for issuance upon the exercise of options and rights granted under the 2003 Option Plan. The granted options have an exercise period of seven to ten years from the date of grant. In May 2015, the Company adopted the 2015 Stock Compensation Plan. Under the 2015 Stock Compensation Plan nonqualified options, incentive stock options, restricted stock and/or stock appreciation rights may be granted to employees and outside directors of the Company and its subsidiaries to purchase the Company's common stock at an exercise price to be determined by the compensation committee. A total of 430,000 shares have been made available under this plan. The Company awarded 40,443 shares of restricted stock in November 2015 that were available under the restricted portion of the plan. The restricted shares were issued out of treasury shares with an aggregate grant date fair value of $0.7 million . The awards were granted using the last sale price as quoted on the NASDAQ Stock Market on the date of grant of $17.75 . The awarded shares vested immediately but are subject to a holding period in which the shares may not be sold, assigned, transferred, pledged or otherwise encumbered. For the year ended December 31, 2014 , there were no shares granted or exercised. There was no compensation cost charged against income for the stock options portion of the Equity Incentive Plan for the years ended December 31, 2015 and December 31, 2014 . The fair value of each option award is estimated on the date of grant using a closed form option valuation (Black-Scholes) model that uses the assumptions noted in the table below. Expected volatilities are based on historical volatilities of the Company’s common stock prior to its de-registration. The Company uses historical data to estimate option exercise and post-vesting termination behavior. (Employee and management options are tracked separately.) The expected term of options granted is based on historical data and represents the period of time that options granted are expected to be outstanding, which takes into account that the options are not transferable. The risk-free interest rate for the expected term of the option is based on the U.S. Treasury yield curve in effect at the time of the grant. There were no options granted in December 31, 2015 and in December 31, 2014 . A status summary of the option plan as of December 31, 2015 and changes during the period ended on that date are presented below: Shares Weighted-Average Exercise Price Weighted-Average Remaining Contractual Life Aggregate Intrinsic Value Outstanding at January 1, 2015 6,063 $ 447.19 Granted — — Exercised — — Forfeited (2,907 ) 564.96 Outstanding at end of period 3,156 $ 338.72 0.4 years $ — Vested or expected to vest 3,156 $ 338.72 0.4 years $ — Options exercisable at period end 3,156 $ 338.72 0.4 years $ — Options outstanding at December 31, 2015 and year-end 2014 were as follows: Outstanding Exercisable Range of Exercise Prices Number Weighted Average Remaining Contractual Life Number Weighted Average Exercise Price December 31, 2015: $157.20 - $390.00 2,160 0.2 years 2,160 $ 228.33 416.40 - 558.90 — 0.0 years — — 570.90 - 699.30 996 0.9 years 996 578.10 3,156 0.4 years 3,156 $ 338.72 December 31, 2014: $157.20 - $390.00 2,160 1.2 years 2,160 $ 228.33 416.40 - 558.90 2,077 0.2 years 2,077 543.29 570.90 - 699.30 1,826 1.6 years 1,826 596.78 6,063 1.0 year 6,063 $ 447.19 As of December 31, 2015 and December 31, 2014 , there was no unrecognized compensation cost related to non-vested stock options granted under the 2003 Option Plan.

Regulatory Matters

Regulatory Matters	12 Months Ended
	Dec. 31, 2015
Banking and Thrift [Abstract]
Regulatory Matters	Regulatory Matters The Company and the Bank (“Regulated Companies”) 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 these regulators that, if undertaken, could have a direct material effect on the Company’s Consolidated Financial Statements. Under capital adequacy guidelines and the regulatory framework for prompt corrective action, the Regulated Companies 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. Their capital amounts and classification are also subject to qualitative judgments by the regulators about components, risk weightings, and other factors. Quantitative measures established by regulation to ensure capital adequacy require the Regulated Companies to maintain minimum amounts and ratios (set forth in the table below) of total and Tier 1 capital to risk-weighted assets, and of Tier 1 Capital to average assets. Tier 1 Capital includes common stockholders’ equity, qualifying preferred stock and Trust Preferred securities, less goodwill and certain other deductions (including the unrealized net gains and losses, after applicable taxes, on available-for-sale securities carried at fair value). Total Capital includes Tier 1 Capital plus preferred stock not qualifying as Tier 1 Capital, mandatory convertible debt, subordinated debt and the allowance for loan and lease losses, subject to limitations by the guidelines. On July 2, 2013, the Federal Reserve Board and the FDIC approved rules that implement the “Basel III” regulatory capital reforms, as well as certain changes required by the Dodd-Frank Act. The rules include a common equity Tier 1 capital conservation buffer of 2.5% of risk-weighted assets, which is in addition to the Tier 1 and Tier 2 risk-based capital requirements. The capital conservation buffer will be phased in over four years beginning on January 1, 2016, with a maximum buffer of 0.625% of risk-weighted assets for 2016, 1.25% for 2017, 1.875% for 2018, and 2.5% for 2019 and thereafter. Failure to maintain the required capital conservation buffer will result in limitations on capital distributions and on discretionary bonuses to executive officers. Based on the Company’s current capital composition and levels, management does not presently anticipate that the rules present a material risk to the Company’s financial condition or results of operations. Basel III also introduced changes to risk-weightings and treatment of Accumulated Other Comprehensive Income (AOCI). In 2015, the Bank made a one -time available election to opt-out of the impact of certain unrealized capital gains and losses in AOCI being included in regulatory capital. There is no opportunity to change methodology in future periods. On March 31, 2015, the Company completed a common stock offering and capital infusion into the Bank. See Note 1 for additional disclosure. Actual To Be Adequately Capitalized To Be Well Capitalized Under Prompt Corrective Action Provisions Amount Ratio Amount Ratio Amount Ratio As of December 31, 2015 Total capital (to risk-weighted assets) Centrue Financial $ 118,359 15.6 % $ 60,525 8.0 % N/A N/A Centrue Bank 117,807 15.6 60,463 8.0 75,579 10.0 Common equity tier I (to risk-weighted assets) Centrue Financial $ 107,678 14.2 $ 34,045 4.5 N/A N/A Centrue Bank 109,216 14.5 34,011 4.5 49,126 6.5 Tier I capital (to risk-weighted assets) Centrue Financial $ 109,768 14.5 $ 45,394 6.0 N/A N/A Centrue Bank 109,216 14.5 45,347 6.0 60,463 8.0 Tier I leverage ratio (to average assets) Centrue Financial $ 109,768 12.1 $ 40,819 4.5 N/A N/A Centrue Bank 109,216 12.0 41,068 4.5 45,631 5.0 Actual To Be Adequately Capitalized To Be Well Capitalized Under Prompt Corrective Action Provisions Amount Ratio Amount Ratio Amount Ratio As of December 31, 2014 Total capital (to risk-weighted assets) Centrue Financial $ 57,829 9.6 % $ 47,991 8.0 % N/A N/A Centrue Bank 70,717 11.8 47,792 8.0 59,740 10.0 Tier I capital (to risk-weighted assets) Centrue Financial $ 41,118 6.9 $ 23,995 4.0 N/A N/A Centrue Bank 63,243 10.6 23,896 4.0 35,844 6.0 Tier I leverage ratio (to average assets) Centrue Financial $ 41,118 4.9 $ 33,345 4.0 N/A N/A Centrue Bank 63,243 7.6 33,231 4.0 41,539 5.0 On December 18, 2009, the Bank entered into an Agreement with the Federal Reserve Bank-Chicago and the IDFPR. The Agreement describes commitments made by the Bank to address and strengthen banking practices relating to credit risk management practices; improving loan underwriting and loan administration; improving asset quality by enhancing the Bank’s position on problem loans through repayment, additional collateral or other means; reviewing and revising as necessary the Bank’s allowance for loan and lease losses policy; maintaining sufficient capital at the Bank, implementing an earnings plan and comprehensive budget to improve and sustain the Bank’s earnings; and improving the Bank’s liquidity position and funds management practices. The Agreement was terminated on February 16, 2016.

Commitments, Contingencies, and

Commitments, Contingencies, and Credit Risk	12 Months Ended
	Dec. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Commitments, Contingencies and Credit Risk	Commitments, Contingencies, and Credit Risk In the normal course of business, the Company enters into a variety of financial instruments with off-balance sheet risk to meet the financing needs of its customers, to reduce its exposure to fluctuations in interest rates, and to conduct lending activities. These instruments principally include commitments to extend credit and standby letters of credit. These instruments involve, to varying degrees, elements of credit and interest rate risk in excess of the amount recognized in the Consolidated Balance Sheets. Financial instruments whose contract amounts represent credit risk are as follows: Standby Letters of Credit Variable Rate Commitments Fixed Rate Commitments Total Commitments Range of Rates on Fixed Rate Commitments Commitments December 31, 2015 $ 1,970 $ 120,173 $ 29,681 $ 151,824 2.60% - 18.00% December 31, 2014 2,025 87,818 25,424 115,267 2.00% - 18.00% 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. Commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. Since many of the commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily represent future cash requirements. For commitments to extend credit, the Bank evaluates each customer's creditworthiness on a case-by-case basis. The amount of collateral obtained is based on management's credit evaluation of the customer. Collateral held varies, but may include accounts receivable; inventory; property, plant, and equipment; and income producing commercial properties. In the event of a customer’s nonperformance, the Company’s credit loss exposure is equal to the contractual amount of those commitments. The credit risk is essentially the same as that involved in extending loans to customers and is subject to normal credit policies. The Company uses the same credit policies in making credit commitments as it does for on-balance sheet instruments, with such exposure to credit loss minimized due to various collateral requirements in place. Unsecured standby letters of credit are conditional commitments issued by the Bank to guarantee the performance of a customer to a third party. The credit risk involved in issuing standby letters of credit is essentially the same as that involved in extending loan commitments to customers. The Company leases certain branch properties under operating leases. Rent expense was $0.31 million and $0.28 million for the years-ended December 31, 2015 and December 31, 2014 , respectively. Rent commitments, before considering renewal options that generally are present, were as follows: 2016 $ 282 2017 230 2018 182 2019 98 2020 — Total $ 792

Parent Company Only Condensed F

Parent Company Only Condensed Financial Information	12 Months Ended
	Dec. 31, 2015
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
Parent Company Only Condensed Financial Information	Parent Company Only Condensed Financial Information The following represents the condensed financial statements of Centrue Financial Corporation, the Parent Company. Balance Sheets (Parent Company Only) December 31, 2015 2014 ASSETS Cash and cash equivalents $ 741 $ 764 Securities available for sale 27 27 Investment in subsidiary 135,576 64,008 Other assets 6,075 1,804 $ 142,419 $ 66,603 LIABILITIES AND STOCKHOLDERS' EQUITY Notes payable $ — $ 10,250 Mandatory redeemable preferred stock 268 268 Trust Preferred Stock 20,620 20,620 Other liabilities 250 5,137 21,138 36,275 Stockholders' equity 121,281 30,328 $ 142,419 $ 66,603 Income (Loss) Statements (Parent Company Only) Years Ended December 31, 2015 2014 Dividends from subsidiary $ — $ — Interest income 16 18 Other income 1,754 753 Interest expense 645 955 Other expense 1,055 437 Income tax expense (benefit) (6,068 ) — Equity in undistributed earnings of subsidiaries 36,464 (3,890 ) Net income (loss) 42,602 (4,511 ) Preferred stock dividends 1,484 3,569 Discount on redemption of preferred stock (13,668 ) — Net income (loss) for common stockholders $ 54,786 $ (8,080 ) Statements of Cash Flows (Parent Company Only) Years Ended December 31, 2015 2014 Cash flows from operating activities Net income (loss) $ 42,602 $ (4,511 ) Adjustments to reconcile net income (loss) to net cash provided by operating activities Undistributed (earnings) loss of subsidiary (36,464 ) 3,890 Share based compensation 461 — Gain from extinguishment of debt (1,750 ) — Increase in other assets (4,271 ) (1,675 ) (Decrease) increase in other liabilities (4,871 ) 699 Net cash used in operating activities (4,293 ) (1,597 ) Cash flows from investing activities Capital infusion to subsidiary $ (36,000 ) $ — Net cash provided by investing activities (36,000 ) — Cash flows from financing activities Repayment of notes payable $ (8,500 ) $ — Purchase of Tarp Warrants — (2 ) Proceeds from issuance of common stock 68,248 — Purchase of treasury stock — (1,255 ) Redemption of Series A Convertible Preferred Stock — (500 ) Redemption of Series C Cumulative Perpetual Preferred Stock (19,000 ) — Issuance of Series D Non-Cumulative Perpetual Preferred Stock — 2,636 Dividends paid on preferred stock (478 ) (881 ) Net cash used in financing activities 40,270 (2 ) Net decrease in cash and cash equivalents $ (23 ) $ (1,599 ) Cash and cash equivalents Beginning of period 764 2,363 End of period $ 741 $ 764

Earnings Per Share

Earnings Per Share	12 Months Ended
	Dec. 31, 2015
Earnings Per Share [Abstract]
Earnings Per Share	Earnings Per Share A reconciliation of the numerators and denominators for earnings per common share computations for the years ended December 31, 2015 and 2014 is presented below (shares in thousands). Common shares, options and per share amounts for both periods shown have been restated to reflect the impact of the reverse stock split the Company completed effective May 29 th , 2015. Options to purchase 3,156 and 6,063 shares of common stock were outstanding for December 31, 2015 and 2014 , respectively; but were not included in the computation of diluted earnings per share because the exercise price was greater than the average market price and, therefore, were anti-dilutive. 2015 2014 Basic Earnings (Loss) Per Common Share Net income (loss) $ 42,602 $ (4,511 ) Preferred stock dividends (1,484 ) (3,569 ) Discount on redemption of preferred stock 13,668 — Net income (loss) for common shareholders $ 54,786 $ (8,080 ) Weighted average common shares outstanding 4,945,073 180,320 Basic earnings per common share $ 11.08 $ (44.81 ) Diluted Earnings Per Common Share Weighted average common shares outstanding 4,945,073 180,320 Add: dilutive effect of assumed exercised stock options — — Add: dilutive effect of assumed exercised common stock warrants — — Weighted average common and dilutive potential shares outstanding 4,945,073 180,320 Diluted earnings (loss) per common share $ 11.08 $ (44.81 )

Quarterly Financial Data (Unaud

Quarterly Financial Data (Unaudited)	12 Months Ended
	Dec. 31, 2015
Quarterly Financial Information Disclosure [Abstract]
Quarterly Financial Data (Unaudited)	Quarterly Financial Data (Unaudited) Interest Net Interest Net Earnings Per Share Income Income Income Basic Diluted 2015 First Quarter $ 6,734 $ 6,040 $ 1,867 $ 65.60 $ 65.60 Second Quarter 7,007 6,446 1,053 0.16 0.16 Third Quarter 7,336 6,737 1,088 0.11 0.11 Fourth Quarter 7,678 7,081 38,594 5.92 5.92 2014 First Quarter $ 6,973 $ 6,026 $ 558 $ (1.12 ) $ (1.12 ) Second Quarter 6,928 6,017 374 (3.06 ) (3.06 ) Third Quarter 6,947 6,076 573 (1.41 ) (1.41 ) Fourth Quarter 6,747 5,976 (6,016 ) (46.32 ) (46.32 )

Subsequent Events

Subsequent Events	12 Months Ended
	Dec. 31, 2015
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events On January 27, 2016, the Company entered into two Branch Purchase and Assumption Agreements to sell a total of three branches. Terms of the Agreement provided for the assumption of the branch deposits and repurchase agreements (approximately $59.3 million as of December 31, 2015 ); purchase of selected loans in the local marketplace (approximately $11.5 million as of December 31, 2015 ) and the purchase of the branch premises and equipment at book value (approximately $5.1 million ). The Company does not expect to incur a loss from either of these transactions.

Summary of Significant Accoun27

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Principles of Consolidation	Principles of Consolidation The consolidated financial statements include the accounts and results of operations of the Company and its subsidiary after elimination of all significant intercompany accounts and transactions.
Use of Estimates	Use of Estimates The accounting and reporting policies of the Company and its subsidiaries conform to U.S. generally accepted accounting principles ("GAAP") and general practice within the banking industry. The preparation of consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Actual results could differ from those estimates.
Basis of Presentation	Basis of Presentation The accounting and reporting policies of the Company conform to generally accepted accounting principles in the United States of America. The Company’s December 31, 2015 and 2014 financial statements reflect all adjustments that are, in the opinion of management, necessary for a fair presentation of its financial position and results of operations for the periods presented. All such adjustments are of a normal and recurring nature.
Cash flows	Cash flows Cash and cash equivalents includes cash, deposits with other financial institutions with maturities under 90 days, and federal funds sold. Net cash flows are reported for customer loan and deposit transactions, repurchase agreements, FHLB advances and federal funds purchased.
Securities	Securities Available-for-sale . Securities classified as available-for-sale are those securities that the Company intends to hold for an indefinite period of time, but not necessarily to maturity. Available-for-sale securities are carried at fair value with unrealized gains and losses, net of related deferred income taxes, recorded in stockholders’ equity as a separate component of other comprehensive income. Any decision to sell a security classified as available-for-sale would be based on various factors, including significant movements in interest rates, changes in the maturity mix of the Company’s assets and liabilities, liquidity needs, regulatory capital considerations, and other similar factors. Purchases and sales of securities are recognized on a trade date basis. Realized securities gains or losses are reported in securities gains (losses), net in the Consolidated Statement of Income (Loss). The cost of securities sold is based on the specific identification method. On a quarterly basis, the Company makes an assessment to determine whether there have been any events or circumstances to indicate that a security for which there is an unrealized loss is impaired on an other-than-temporary (“OTTI”) basis. In evaluating other-than-temporary impairment, the Company considers many factors including the severity and duration of the impairment; the financial condition and near-term prospects of the issuer, which for debt securities considers external credit ratings and recent downgrades; whether it intends to sell, or it is more likely than not that it will be required to sell, a security in an unrealized loss position before recovery of its amortized cost basis. Securities for which there is an unrealized loss that is deemed to be OTTI are written down to fair value with the write-down recorded as a realized loss and included in net impairment on securities, but only to the extent the impairment is related to credit losses. The amount of the impairment related to other factors is recognized in other comprehensive income unless management intends to sell the security or believes it is more likely than not that it will be required to sell the security prior to full recovery. For trust preferred collateralized debt obligations (“CDOs”), the issuer’s financial condition, payment history, and ability to pay interest and repay principal according to the terms of the financial instrument, are analyzed. For multi-issuer securities, the analysis is conducted for each issuer. In analyzing an issuer’s financial condition, the Company reviews relevant balance sheet, income statement and ratio information. Industry and market information are also considered. The Company considers whether the securities were issued by or have principal and interest payments guaranteed by the federal government or its agencies. The Company conducts regular reviews of the bond agency ratings of securities. Interest income is reported net of amortization of premiums and accretion of discounts. Amortization of purchase premium or discount is included in interest income. Premiums and discounts on securities are amortized over the level-yield method without anticipating prepayments except for mortgage backed securities where prepayments are anticipated. Restricted Securities. Federal Home Loan Bank stock and Federal Reserve Bank stock are carried at cost and are included in restricted stock. The Corporation is required to maintain these equity securities as a member of both the Federal Home Loan Bank and the Federal Reserve System, and in amounts as required by these institutions. These equity securities are “restricted” in that they can only be sold back to the respective institutions or another member institution at par. Therefore, they are less liquid than other tradable equity securities and no impairment has been recorded during 2015 and 2014 . Both cash and stock dividends are reported as income.
Loans	Loans Held for Sale Mortgage loans originated and intended for sale in the secondary market are carried at the lower of aggregate cost or fair value, as determined by outstanding commitments from investors. Net unrealized losses, if any, are recorded as a valuation allowance and charged to earnings. Mortgage loans held for sale are sold with either servicing rights retained or servicing rights released. When retaining the servicing rights, the carrying value of mortgage loans sold is reduced by the cost allocated to the servicing right. Gains and losses on sales of mortgage loans are based on the difference between the selling price and the carrying value of the related loan sold. When selling service released, the gain or loss is determined by comparing the selling price to the value of the mortgage sold. Loans Loans that management has the intent and ability to hold for the foreseeable future or until maturity or payoff are reported at the principal balance outstanding; net of purchase premiums and discounts, deferred loan fees and costs, and an allowance for loan losses. Interest income on loans is accrued based on principal amounts outstanding. Loan and lease origination fees, fees for commitments that are expected to be exercised and certain direct loan origination costs are deferred and the net amount amortized over the estimated life of the related loans or commitments as a yield adjustment. Other credit-related fees are recognized as fee income when earned. Nonaccrual Loans. Generally, commercial loans and loans secured by real estate are designated as nonaccrual: (a) when either principal or interest payments are 90 or more past due based on contractual terms unless the loan is sufficiently collateralized such that full repayment of both principal and interest is expected and is in the process of collection; or (b) when an individual analysis of a borrower’s creditworthiness indicates a credit should be placed on nonaccrual status. When a loan is placed on nonaccrual status, unpaid interest credited to income in the current year is reversed and unpaid interest accrued in prior years is charged against the allowance for loan losses. Future interest income may only be recorded on a cash basis after recovery of principal is reasonably assured. Nonaccrual loans are returned to accrual status when the financial position of the borrower and other relevant factors indicate there is no longer doubt as to such collectability. Charged-Off Loans. Commercial loans and loans secured by real estate are generally charged-off when deemed uncollectible. A loss is recorded at that time if the net realizable value of the real estate can be quantified and it is less than the associated principal and interest. Consumer loans that are not secured by real estate are subject to mandatory charge-off at a specified delinquency date and are usually not classified as non-accrual prior to being charged-off. Consumer loans, which include installment, automobile, and single payment loans are generally charged-off in full no later than the end of the month in which the loan becomes 120 days past due. 90-Day Past Due Loans. 90 days or more past due loans are loans for which principal or interest payments become 90 days or more past due but that still accrue interest since they are loans that are well secured and in the process of collection. Allowance for Loan Losses. The allowance for loan losses is a valuation allowance for probable incurred credit losses. Credit exposures deemed to be uncollectible are charged-off against the allowance, while recoveries of amounts previously charged-off are credited to the allowance. Management estimates the allowance balance required using past loan loss experience, the nature and volume of the portfolio, information about specific borrower situations and estimated collateral values, economic conditions, and other factors. Allocations of the allowance may be made for specific loans, but the entire allowance is available for any loan that, in management’s judgment, should be charged off. Additions to the allowance for loan losses are charged to operating expense through the provision for loan losses. The amount charged to operating expense in any given year is dependent upon a number of factors including historic loan growth and changes in the composition of the loan portfolio, net charge-off levels, and the Company’s assessment of the allowance for loan losses. The allowance for loan losses consists of specific and general components. The specific component is established for expected losses on individual loans classified as impaired. A loan is considered impaired when, based on current information and events, it is probable that the Company will be unable to collect all contractual principal and interest due according to the terms of the loan agreement. Impaired loans are measured based on the present value of expected future cash flows discounted at the loan’s effective interest rate or the value of the underlying collateral. The Company evaluates the collectability of both principal and interest when assessing the need for loss accrual. 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 case-by-case basis, taking into consideration all 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. The specific reserves component of the allowance for loan losses is based on a regular analysis of impaired loans exceeding a fixed dollar amount where the internal credit rating is at or below a predetermined classification. If the estimated fair value of the loan is less than the recorded book value, a valuation allowance is established as a component of the allowance for loan losses. In cases where a borrower experiences financial difficulties and the Company makes certain concessionary modifications to contractual terms, the loan is classified as a troubled debt restructured loan. Loans restructured at a rate equal to or greater than that of a new loan with comparable risk at the time the contract is modified may be excluded from restructured loans in the calendar years subsequent to the restructuring if they are in compliance with modified terms. Generally, a nonaccrual loan that is a troubled debt restructuring remains on nonaccrual until such time that repayment of the remaining principal and interest is not in doubt, and the borrower has a period of satisfactory repayment performance. Troubled debt restructurings (TDRs) are individually evaluated for impairment and included in the separately identified impairment disclosures. TDRs are measured at the present value of estimated future cash flows using the loan’s effective rate at inception. If a TDR is considered to be a collateral dependent loan, the loan is reported, net, at the fair value of the collateral. For TDRs that subsequently default, the Company determines the amount of the allowance on that loan in accordance with the accounting policy for the allowance for loan losses on loans individually identified as impaired. The Company incorporates recent historical experience related to TDRs including the performance of TDRs that subsequently default into the calculation of the allowance by loan portfolio segment. The general component covers loans that are collectively evaluated for impairment. Large groups of smaller balance homogeneous loans, such as consumer and residential real estate loans, are collectively evaluated for impairment, and accordingly, they are not included in the separately identified impairment disclosures. The general allowance component also includes loans that are not individually identified for impairment evaluation, as well as those loans that are individually evaluated but are not considered impaired. The general component is based on historical loss experience adjusted for current factors. The historical loss experience is determined by portfolio segment and is based on the actual loss history experienced by the Company. This actual loss experience is supplemented with other economic factors based on the risks present for each portfolio segment. These economic factors include consideration of the following: levels of and trends in delinquencies and impaired loans (including TDRs); levels of and trends in charge-offs and recoveries; migration of loans to the classification of special mention, substandard, or doubtful; trends in volume and terms of loans; effects of any changes in risk selection and underwriting standards; other changes in lending policies, procedures, and practices; experience, ability, and depth of lending management and other relevant staff; national and local economic trends and conditions; industry conditions; and effects of changes in credit concentration. The establishment of the allowance for loan losses involves a high degree of judgment and includes a level of imprecision given the difficulty of identifying all of the factors impacting loan repayment and the timing of when losses actually occur. Management considers the following when assessing the risk in the loan portfolio: • Commercial loans are dependent on the strength of the industries of the related borrowers and the success of their businesses. Commercial loans are advances for equipment purchases or to provide working capital or meet other financing needs of business enterprises. These loans may be secured by accounts receivable, inventory, equipment or other business assets. At the time of origination, financial information is obtained from the borrower to evaluate ability to repay the loans and periodically obtained during the life of the loan. • Agriculture and Agriculture Real Estate are subject to adverse market conditions including changes in local or foreign demand, weather related reduction in output, impact on storage, distribution or use. Increasing commodity prices leading to higher production costs, distribution or exporting. • Commercial real estate loans and Construction loans are dependent on the industries tied to these loans as well as the local commercial real estate market. The loans are secured by the real estate, and appraisals are obtained to support the loan amount. An evaluation of the project’s cash flows is performed to evaluate the borrower’s ability to repay the loan at the time of origination and periodically updated during the life of the loan. • 1-4 family residential real estate and home equity loans are affected by the local residential real estate market, the local economy, and, for variable rate mortgages, movement in indices tied to these loans. At the time of origination the Bank evaluates the borrower’s repayment ability through a review of credit scores and debt to income ratios. Appraisals are obtained to support the loan amount. • Consumer loans are subject to adverse employment conditions in the local economy which may lead to higher default rates. Decreases in the value of underlying collateral effect the amount collected if a borrower defaults.
Loan Commitments and Related Financial Instruments	Loan Commitments and Related Financial Instruments Financial instruments include off-balance sheet credit instruments, such as commitments to make loans and commercial letters of credit, issued to meet customer financing needs. The face amount for these items represents the exposure to loss, before considering customer collateral or ability to repay. Such financial instruments are recorded when they are funded.
Concentration of Credit Risk	Concentration of Credit Risk The Bank generates loans throughout its foot print, with lending activities primarily focused on LaSalle, Kankakee and Will Counties in Illinois and St. Louis County in Missouri. The Bank engages in all traditional aspects of community lending with focuses on: (i) owner occupied commercial real estate, (ii) investor commercial real estate, (iii) residential lending, (iv) commercial lending, (v) multifamily real estate, and (vi) agricultural lending.
Mortgage Servicing Rights	Mortgage Servicing Rights Servicing rights are recognized separately when they are acquired through sales of loans. When mortgage loans are sold, servicing rights are initially recorded at fair value with the income statement effect recorded in gains on sales of loans. Fair value is based on market prices for comparable mortgage servicing contracts, when available or alternatively, is based on a valuation model that calculates the present value of estimated future net servicing income. All classes of servicing assets are subsequently measured using the amortization method which requires servicing rights to be amortized into non-interest income in proportion to, and over the period of, the estimated future net servicing income of the underlying loans. Servicing rights are evaluated for impairment based upon the fair value of the rights as compared to carrying amount. Impairment is determined by stratifying rights into groupings based on predominant risk characteristics, such as interest rate, loan type and investor type. Impairment is recognized through a valuation allowance for an individual grouping, to the extent that fair value is less than the carrying amount. If the Company later determines that all or a portion of the impairment no longer exists for a particular grouping, a reduction of the allowance may be recorded as an increase to income. Changes in valuation allowances are reported with noninterest expense in the other expense line on the income (loss) statement. The fair values of servicing rights are subject to significant fluctuations as a result of changes in estimated and actual prepayment speeds and default rates and losses. Servicing fee income which is reported on the income (loss) statement as mortgage banking income is recorded for fees earned for servicing loans. The fees are based on a contractual percentage of the outstanding principal; or a fixed amount per loan and are recorded as income when earned. The amortization of mortgage servicing rights is netted against loan servicing fee income.
Premises and Equipment	Premises and Equipment Premises, furniture and equipment, and leasehold improvements are stated at cost less accumulated depreciation and land is carried at cost. Depreciation expense is determined by the straight-line method over the estimated useful lives of the assets. Leasehold improvements are amortized on a straight-line basis over the shorter of the life of the asset or the lease term. Rates of depreciation are generally based on the following useful lives: buildings, 25 to 40 years; building improvements, typically 3 to 15 years but longer under limited circumstances; and furniture and equipment, 3 to 10 years. Gains and losses on dispositions are included in gains on sale of other assets in noninterest income on the Consolidated Statement of Income (Loss). Maintenance and repairs are charged to operating expenses as incurred, while improvements that extend the useful life of assets are capitalized and depreciated over the estimated remaining life. Long-lived depreciable assets are evaluated periodically for impairment when events or changes in circumstances indicate the carrying amount may not be recoverable. Impairment exists when the expected undiscounted future cash flows of a long-lived asset are less than its carrying value. In that event, the Company recognizes a loss for the difference between the carrying amount and the estimated fair value of the asset based on a quoted market price, if applicable, or a discounted cash flow analysis. Impairment losses are recorded in other noninterest expense on the Consolidated Statement of Income (Loss).
Other Real Estate Owned	Other Real Estate Owned Other real estate owned includes properties acquired in partial or total satisfaction of certain loans. Properties are initially recorded at fair value, which represents the estimated sales price of the properties on the date acquired less estimated selling costs, establishing a new cost basis. Any write-downs in the carrying value of a property at the time of acquisition are charged against the allowance for loan losses. Management periodically reviews the carrying value of other real estate owned. Any write-downs of the properties subsequent to acquisition, as well as gains or losses on disposition and income or expense from the operations of other real estate owned, are recognized in operating results in the period they are realized.
Earnings Per Share	Earnings Per Share Basic earnings per common share is net income for common stockholders divided by the weighted average number of common shares outstanding during the period. Diluted earnings per common share includes the dilutive effect of additional potential common shares issuable under stock options using the treasury stock method. Earnings and dividends per share are restated for all stock splits through the date of issuance of the financial statements.
Transfers of Financial Assets	Transfers of Financial Assets Transfers of financial assets are accounted for as sales, when control over the assets has been relinquished. Control over transferred assets is deemed to be surrendered when the assets have been isolated from the Company, the transferee obtains the right (free of conditions that constrain it from taking advantage of that right) to pledge or exchange the transferred assets, and the Company does not maintain effective control over the transferred assets through an agreement to repurchase them before their maturity.
Bank-Owned Life Insurance (BOLI)	Bank-Owned Life Insurance (“BOLI”) BOLI represents life insurance policies on the lives of certain current and former Company officers and directors for which the Company is the sole beneficiary. These policies are recorded as an asset on the Consolidated Balance Sheets at their cash surrender value adjusted for other charges or other amounts due that are probable at settlement. The change in cash surrender value and insurance proceeds received are recorded as bank-owned life insurance income on the Consolidated Statement of Income (Loss) in noninterest income. Management performs a monthly analysis to determine the current cash surrender value and adjusts the value accordingly.
Intangible Assets	Intangible Assets Intangible assets represent purchased assets that also lack physical substance but can be distinguished from goodwill because of contractual or other legal rights or because the asset is capable of being sold or exchanged either on its own or in combination with a related contract, asset, or liability. Identified intangible assets that have a finite useful life are amortized over that life in a manner that reflects the estimated decline in the economic value of the identified intangible asset. Identified intangible assets that have a finite useful life are periodically reviewed to determine whether there have been any events or circumstances to indicate that the recorded amount is not recoverable from projected undiscounted net operating cash flows. If the projected undiscounted net operating cash flows are less than the carrying amount, a loss is recognized to reduce the carrying amount to fair value, and, when appropriate, the amortization period is also reduced. Unamortized intangible assets associated with disposed assets are included in the determination of gain or loss on the sale of the disposed assets. Intangible assets consist of core deposit and acquired customer relationship intangible assets arising from whole bank and branch company acquisitions. They are initially measured at fair value and then are amortized over ten years using an accelerated method. Management reviews intangible assets at least annually for impairment and any such impairment will be recognized in the period identified.
Repurchase agreements	Repurchase agreements Substantially all repurchase agreement liabilities represent amounts advanced by various customers. Securities are pledged to cover these liabilities, which are not covered by federal deposit insurance.
Mortgage Banking Derivatives	Mortgage Banking Derivatives Commitments to fund mortgage loans (interest rate locks) to be sold into the secondary market and forward commitments for the future delivery of these mortgage loans are accounted for as free standing derivatives. Fair values of these mortgage derivatives are estimated based on changes in mortgage interest rates from the date the interest on the loan is locked. The Company enters into forward commitments for the future delivery of mortgage loans when interest rate locks are entered into, in order to hedge the change in interest rates resulting from its commitments to fund the loans. Changes in the fair values of these derivatives are included in net gains on sales of loans.
Income Taxes	Income Taxes The Company files income tax returns in the U.S. federal jurisdiction and in Illinois and Missouri. The provision for income taxes is based on income in the financial statements, rather than amounts reported on the Company’s income tax return. Changes in enacted tax rates and laws are reflected in the financial statements in the periods they occur. The Company recognizes interest related to income tax matters as interest expense and penalties related to income tax matters as other expense. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts 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 years in which those temporary differences are expected to be recovered or settled. A valuation allowance is established for any deferred tax asset for which recovery or settlement is unlikely. The effect on deferred tax assets and liabilities of a change in tax rates is recognized as income or expense in the period that includes the enactment date. A tax position is recognized as a benefit only if it is “more likely than not” that the tax position would be sustained in a tax examination, with a tax examination being presumed to occur. The amount recognized is the largest amount of tax benefit that is greater than 50% likely of being realized on examination. For tax positions not meeting the “more likely than not” test, no tax benefit is recorded.
Stock-Based Compensation	Stock-Based Compensation Compensation cost is recognized for stock options and restricted stock awards issued to employees, based on the fair value of these awards at the date of grant. A Black-Scholes model is utilized to estimate the fair value of the stock options, while the market price of the Company’s common stock at the date of grant is used for restricted stock awards. Compensation cost is recognized over the required service period, generally defined as the vesting period. For awards with graded vesting, compensation cost is recognized on a straight-line basis over the requisite service period for the entire award.
Fair Value of Financial Instruments	Fair Value of Financial Instruments Fair values of financial instruments are estimated using relevant market information and other assumptions. Fair value estimates involve uncertainties and matters of significant judgment regarding interest rates, credit risk, prepayments, and other factors, especially in the absence of broad markets for particular items. Changes in assumptions or in market conditions could significantly affect the estimates. See Note 4 for additional information.
Dividend Restrictions	Dividend Restrictions Banking regulations require the maintenance of certain capital levels and may limit the amount of dividends that may be paid by the subsidiary bank to the holding company or by the holding company to stockholders.
Loss Contingencies	Loss Contingencies Loss contingencies, including claims and legal actions arising in the ordinary course of business, are recorded as liabilities when the likelihood of loss is probable and an amount or range of loss can be reasonably estimated. Management does not believe there now are such matters that will have a material effect on the financial statements.
Comprehensive Income	Comprehensive Income Comprehensive income is the total of reported net income and all other revenues, expenses, gains, and losses that bypass reported net income under GAAP. As of December 31, 2015 , the Company included unrealized gains or losses on securities available-for-sale in other comprehensive income.
Treasury Stock	Treasury Stock Treasury stock acquired is recorded at cost and is carried as a reduction of stockholders’ equity in the Consolidated Balance Sheets. Treasury stock issued is valued based on the “last in, first out” inventory method. The difference between the consideration received upon issuance and the carrying value is charged or credited to surplus.
Reclassifications	Reclassifications Certain prior year account balances, with no effect on net income (loss) or stockholders’ equity, have been reclassified to be consistent with the classifications adopted as of and for the period ended December 31, 2015 .
Recent Accounting Pronouncements	Recent Accounting Pronouncements In January 2016, the FASB issued an update, ASU No. 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities. The guidance in this update requires equity investments (except those accounted for under the equity method of accounting or those that result in consolidation of the investee) to be measured at fair value with changes in fair value recognized in net income. However, an entity may choose to measure equity investments that do not have readily determinable fair values at cost minus impairment, if any, plus or minus changes resulting from observable price changes in orderly transactions for the identical or a similar investment of the same issuer. The amendments in this update are effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. Management is currently determining the impact of this new guidance on the consolidated financial statements. In April 2015, the FASB issued an update, ASU No. 2015-05, Customer's Accounting for Fees Paid in a Cloud Computing Arrangement. ASU 2015-05 provides guidance to customers about whether a cloud computing arrangement includes a software license. If a cloud computing arrangement includes a software license, the customer should account for the software license element of the arrangement consistent with the acquisition of other software licenses. If the arrangement does not include a software license, the customer should account for a cloud computing arrangement as a service contract. This amendment is effective for fiscal years beginning after December 15, 2015, and interim periods beginning after December 15, 2016. Early adoption is permitted. The amendment may be adopted either prospectively to all arrangements entered into or materially modified after the effective date or retrospectively. The Company intends to adopt the accounting standard during 2016, as required, with no material impact. In June of 2014, the FASB issued an update, ASU No. 2014-11 Transfers and Servicing (Topic 860), guidance that requires repurchase-to-maturity transactions to be accounted for as secured borrowings and with additional disclosures. The guidance also requires separate accounting for a transfer of a financial asset executed contemporaneously with a repurchase agreement with the same counterparty. If the derecognition criteria are met as outlined in the guidance, the initial transfer will generally be accounted for as a sale and the repurchase agreement will generally be accounted for as a secured borrowing. The guidance is effective for annual reporting periods beginning after December 15, 2014 and interim reporting periods after December 15, 2015. Management is evaluating the new guidance, but does not expect the adoption of this guidance will materially impact the Company's financial condition, results of operations, or liquidity. In May 2014, the FASB issued an update (ASU No. 2014-09, Revenue from Contracts with Customers) creating FASB Topic 606, Revenue from Contracts with Customers. The guidance in this update affects any entity that either enters into contracts with customers to transfer goods or services or enters into contracts for the transfer of nonfinancial assets unless those contracts are within the scope of other standards (for example, insurance contracts or lease contracts). The core principle of the guidance is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The guidance provides steps to follow to achieve the core principle. An entity should disclose sufficient information to enable users of financial statements to understand the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers. Qualitative and quantitative information is required about contracts with customers, significant judgments and changes in judgments, and assets recognized from the costs to obtain or fulfill a contract. The amendments in this update will become effective for annual periods and interim periods within those annual periods beginning after December 15, 2016. We are currently evaluating the impact of adopting the new guidance on the consolidated financial statements.

Securities (Tables)

Securities (Tables)	12 Months Ended
	Dec. 31, 2015
Investments, Debt and Equity Securities [Abstract]
Summary of the Fair Value, Gross Unrealized Gains and Losses and Amortized Cost of Securities	The following table summarizes the fair value of available-for-sale securities, the related gross unrealized gains and losses recognized in accumulated other comprehensive income, and the amortized cost as follows: December 31, 2015 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value U.S. government agencies $ 14,629 $ 13 $ (35 ) $ 14,607 States and political subdivisions 10,190 16 (25 ) 10,181 U.S. government agency residential mortgage-backed securities 127,039 7 (1,017 ) 126,029 Collateralized residential mortgage obligations: Agency 17,990 — (157 ) 17,833 Equity securities 2,632 158 — 2,790 Corporate — — — — $ 172,480 $ 194 $ (1,234 ) $ 171,440 December 31, 2014 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value U.S. government agencies $ 21,274 $ 6 $ (171 ) $ 21,109 States and political subdivisions 8,951 78 (1 ) 9,028 U.S. government agency residential mortgage-backed securities 99,338 551 (221 ) 99,668 Collateralized residential mortgage obligations: Agency 38 — — 38 Equity securities 2,579 157 — 2,736 Collateralized debt obligations: Single issue 765 — (3 ) 762 Corporate 2,000 30 — 2,030 $ 134,945 $ 822 $ (396 ) $ 135,371
Activity for Available-for-Sale Securities	The amounts below include the activity for available-for-sale securities related to sales, maturities and calls: 2015 2014 Proceeds from calls and maturities $ 5,965 $ 2,165 Proceeds from sales 91,409 60,161 Realized gains 519 1,258 Realized losses (180 ) (329 ) Net impairment loss recognized in earnings — —
Schedule of Contractual Maturity of Securities	The amortized cost and fair value of the investment securities portfolio are shown below by contractual maturity. Expected maturities may differ from contractual maturities if borrowers have the right to call or prepay obligations with or without call or prepayment penalties. December 31, 2015 Amortized Cost Fair Value Due in one year or less $ 2,592 $ 2,600 Due after one year through five years 9,075 9,076 Due after five years through ten years 8,173 8,151 Due after ten years 4,979 4,961 U.S. government agency residential mortgage-backed securities 127,039 126,029 Collateralized residential mortgage obligations 17,990 17,833 Equity 2,632 2,790 $ 172,480 $ 171,440
Schedule of Securities in a Continuous Unrealized Loss Position	Securities with unrealized losses not recognized in income are as follows presented by length of time individual securities have been in a continuous unrealized loss position: December 31, 2015 Less than 12 Months 12 Months or More Total Fair Value Unrealized Loss Fair Value Unrealized Loss Fair Value Unrealized Loss U.S. government agencies $ 10,394 $ (35 ) $ — $ — $ 10,394 $ (35 ) States and political subdivisions $ 6,057 $ (25 ) $ — $ — $ 6,057 $ (25 ) U.S. government agency residential mortgage-backed securities 124,411 (1,017 ) — — 124,411 (1,017 ) Collateralized residential mortgage obligations: Agency 17,833 (157 ) — — 17,833 (157 ) Corporate — — — — — — Total temporarily impaired $ 158,695 $ (1,234 ) $ — $ — $ 158,695 $ (1,234 ) December 31, 2014 Less than 12 Months 12 Months or More Total Fair Value Unrealized Loss Fair Value Unrealized Loss Fair Value Unrealized Loss U.S. government agencies $ 18,212 $ (157 ) $ 1,986 $ (14 ) $ 20,198 $ (171 ) States and political subdivisions 386 (1 ) — — 386 (1 ) U.S. government agency residential mortgage-backed securities 34,809 (211 ) 2,148 (10 ) 36,957 (221 ) Collateralized debt obligations: Single issue — — 762 (3 ) 762 (3 ) Total temporarily impaired $ 53,407 $ (369 ) $ 4,896 $ (27 ) $ 58,303 $ (396 )

Loans (Tables)

Loans (Tables)	12 Months Ended
	Dec. 31, 2015
Receivables [Abstract]
Summary of Loan Classifications	The major classifications of loans follow: Aggregate Principal Amount December 31, 2015 December 31, 2014 Commercial $ 67,360 61,561 Agricultural & AGRE 50,121 53,193 Construction, land & development 26,016 13,860 Commercial RE 391,918 315,213 1-4 family mortgages 95,227 106,472 Consumer 2,905 2,901 Total Loans $ 633,547 553,200 Allowance for loan losses (8,591 ) (7,981 ) Loans, net $ 624,956 545,219
Schedule of Loans by Internal Risk Rating	The following table presents the commercial loan portfolio by internal risk rating: December 31, 2015 Commercial Commercial Real Estate Internal Risk Rating Closed-end Lines of Credit Agriculture & AG RE Construction, Land & Development Owner- Occupied Non-Owner Occupied Total Pass $ 24,303 $ 42,374 $ 50,121 $ 25,825 $ 164,538 $ 203,679 $ 510,840 Special Mention 304 250 — 64 7,701 11,512 19,831 Substandard 129 — — 127 412 4,076 4,744 Doubtful — — — — — — — Total $ 24,736 $ 42,624 $ 50,121 $ 26,016 $ 172,651 $ 219,267 $ 535,415 December 31, 2014 Commercial Commercial Real Estate Internal Risk Rating Closed-end Lines of Credit Agriculture & AG RE Construction, Land & Development Owner- Occupied Non-Owner Occupied Total Pass $ 18,379 $ 42,076 $ 53,193 $ 13,038 $ 139,617 $ 157,340 $ 423,643 Special Mention 392 250 — — 1,225 6,620 8,487 Substandard 464 — — 822 1,480 8,931 11,697 Doubtful — — — — — — — Total $ 19,235 $ 42,326 $ 53,193 $ 13,860 $ 142,322 $ 172,891 $ 443,827 The following table presents the Retail Residential Loan Portfolio by Internal Risk Rating: Residential -- 1-4 family Senior Lien Jr. Lien & Lines of Credit Total December 31, 2015 Unrated $ 48,319 $ 41,380 $ 89,699 Special mention 4,011 168 4,179 Substandard 1,036 313 1,349 Doubtful — — — Total $ 53,366 $ 41,861 $ 95,227 Residential -- 1-4 family Senior Lien Jr. Lien & Lines of Credit Total December 31, 2014 Unrated $ 55,142 $ 45,299 $ 100,441 Special mention 3,807 120 3,927 Substandard 1,719 385 2,104 Doubtful — — — Total $ 60,668 $ 45,804 $ 106,472
Analysis of Activity in Allowance for Loan Losses	An analysis of activity in the allowance for loan losses follows: Commercial Agriculture & AG RE Construction, Land & Development Commercial RE 1-4 Family Residential Consumer Total December 31, 2015 Beginning Balance $ 1,117 $ 69 $ 711 $ 3,999 $ 2,075 $ 10 $ 7,981 Charge-offs (384 ) — (4 ) (702 ) (667 ) (6 ) (1,763 ) Recoveries 197 3 52 1,663 52 31 1,998 Provision (282 ) 25 (236 ) 721 168 (21 ) 375 Ending Balance $ 648 $ 97 $ 523 $ 5,681 $ 1,628 $ 14 $ 8,591 Commercial Agriculture & AG RE Construction, Land & Development Commercial RE 1-4 Family Residential Consumer Total December 31, 2014 Beginning Balance $ 1,413 $ 70 $ 1,127 $ 6,834 $ 2,162 $ 31 $ 11,637 Charge-offs (2,277 ) — (953 ) (6,938 ) (1,712 ) (7 ) (11,887 ) Recoveries 373 3 35 547 65 6 1,029 Provision 1,608 (4 ) 502 3,556 1,560 (20 ) 7,202 Ending Balance $ 1,117 $ 69 $ 711 $ 3,999 $ 2,075 $ 10 $ 7,981 The following is an analysis on the balance in the allowance for loan losses and the recorded investment in impaired loans by portfolio segment based on impairment method as of December 31, 2015 and December 31, 2014 : December 31, 2015 Commercial Agriculture & AG RE Construction, Land & Development Commercial RE 1-4 Family Residential Consumer Total Allowance for loan losses: Loans individually evaluated for impairment $ 80 $ — $ 10 $ 1,178 $ 325 $ 1 $ 1,594 Loans collectively evaluated for impairment 568 97 513 4,503 1,303 13 6,997 Total ending allowance balance: $ 648 $ 97 $ 523 $ 5,681 $ 1,628 $ 14 $ 8,591 Loan balances: Loans individually evaluated for impairment $ 129 $ — $ 127 $ 4,488 $ 1,348 $ 1 $ 6,093 Loans collectively evaluated for impairment 67,231 50,121 25,889 387,430 93,879 2,904 627,454 Loans with an allowance recorded: $ 67,360 $ 50,121 $ 26,016 $ 391,918 $ 95,227 $ 2,905 $ 633,547 December 31, 2014 Commercial Agriculture & AG RE Construction, Land & Development Commercial RE 1-4 Family Residential Consumer Total Allowance for loan losses: Loans individually evaluated for impairment $ 430 $ — $ 126 $ 216 $ 783 $ — $ 1,555 Loans collectively evaluated for impairment 687 69 585 3,783 1,292 10 6,426 Total ending allowance balance: $ 1,117 $ 69 $ 711 $ 3,999 $ 2,075 $ 10 $ 7,981 Loan balances: Loans individually evaluated for impairment $ 464 $ — $ 822 $ 5,961 $ 2,056 $ — $ 9,303 Loans collectively evaluated for impairment 61,097 53,193 13,038 309,252 104,416 2,901 543,897 Loans with an allowance recorded: $ 61,561 $ 53,193 $ 13,860 $ 315,213 $ 106,472 $ 2,901 $ 553,200
Summary of Troubled Debt Restructurings	The following tables present loans by class modified as troubled debt restructurings that occurred during the years ending December 31, 2015 and 2014 : For the Twelve Months Ended December 31, 2015 Number of Loans Pre-Modification Recorded Investment Post-Modification Recorded Investment 1-4 family residential Senior lien 3 241 241 Total 3 $ 241 $ 241 The troubled debt restructurings described above did not have a material impact to the allowance for loan losses and did not result in any additional charge-off’s during the year ended December 31, 2015 . For the Twelve Months Ended December 31, 2014 Number of Loans Pre-Modification Recorded Investment Post-Modification Recorded Investment Construction, land & development 1 $ 5,013 $ 5,013 1-4 family residential Jr. lien & lines of credit 1 34 34 Total 2 $ 5,047 $ 5,047
Summary of Impaired Loans	The following tables present data on impaired loans: December 31, 2015 Recorded Investment Unpaid Principal Balance Related Allowance Average Recorded Investment Interest Income Recognized Cash Basis Interest Recognized Loans with no related allowance recorded: Commercial Closed-end $ 2 $ 2 $ — $ 15 $ 1 $ 1 Line of credit — — — — — — Agricultural & AG RE — — — — — — Construction, land & development — — — 299 — — CRE - all other Owner occupied 6 6 — 78 — — Non-owner occupied — — — — — — 1-4 family residential Senior lien 176 176 — 277 — — Jr. lien & lines of credit 71 71 — 88 3 3 Consumer — — — — — — Subtotal 255 255 — 757 4 4 Loans with an allowance recorded: Commercial Closed-end $ 127 $ 127 $ 80 $ 199 $ 2 $ 2 Line of credit — — — — — — Agricultural & AG RE — — — — — — Construction, land & development 127 419 10 120 — — CRE - all other Owner occupied 406 541 100 586 11 9 Non-owner occupied 4,076 4,955 1,078 4,101 17 17 1-4 family residential Senior lien 859 984 215 1,003 14 10 Jr. lien & lines of credit 242 242 110 230 5 5 Consumer 1 — 1 — — — Subtotal 5,838 7,268 1,594 6,239 49 43 Total $ 6,093 $ 7,523 $ 1,594 $ 6,996 $ 53 $ 47 December 31, 2014 Recorded Investment Unpaid Principal Balance Related Allowance Average Recorded Investment Interest Income Recognized Cash Basis Interest Recognized Loans with no related allowance recorded: Commercial Closed-end $ 5 $ 5 $ — $ 15 $ — $ — Line of credit — — — — — — Agricultural & AG RE — — — — — — Construction, land & development 648 1,122 — 221 11 11 CRE - all other Owner occupied 221 261 — 3,337 10 9 Non-owner occupied 4,354 4,753 — 4,084 74 74 1-4 family residential Senior lien 319 319 — 1,931 5 4 Jr. lien & lines of credit 120 120 — 142 6 6 Consumer — — — — — — Subtotal 5,667 6,580 — 9,730 106 104 Loans with an allowance recorded: Commercial Closed-end $ 459 $ 459 $ 430 $ 1,228 $ 4 $ 4 Line of credit — — — 940 — — Agricultural & AG RE — — — — — — Construction, land & development 174 332 126 3,833 — — CRE - all other Owner occupied 766 901 138 3,305 2 — Non-owner occupied 620 620 78 7,737 2 — 1-4 family residential Senior lien 1,352 1,352 660 2,032 36 32 Jr. lien & lines of credit 265 276 123 268 10 9 Consumer — — — — — — Subtotal 3,636 3,940 1,555 19,343 54 45 Total $ 9,303 $ 10,520 $ 1,555 $ 29,073 $ 160 $ 149
Schedule of Activity Related to Loan Portfolio Aging	The following table represents activity related to loan portfolio aging: December 31, 2015 30 - 59 Days Past Due 60 - 89 Days Past Due 90 Days Past Due or Nonaccrual Total Past Due Current Total Loans Commercial Closed-end $ 58 $ — $ 130 $ 188 $ 24,548 $ 24,736 Line of credit — — — — 42,624 42,624 Agricultural & AG RE — — — — 50,121 50,121 Construction, land & development — — 127 127 25,889 26,016 CRE - all other Owner occupied 985 — 412 1,397 171,254 172,651 Non-owner occupied — — 4,076 4,076 215,191 219,267 1-4 family residential Senior lien 1,481 21 994 2,496 50,870 53,366 Jr. lien & lines of credit 230 258 268 756 41,105 41,861 Consumer 1 1 — 2 2,903 2,905 Total $ 2,755 $ 280 $ 6,007 $ 9,042 $ 624,505 $ 633,547 December 31, 2014 30 - 59 Days Past Due 60 - 89 Days Past Due 90 Days Past Due or Nonaccrual Total Past Due Current Total Loans Commercial Closed-end $ 38 $ — $ 450 $ 488 $ 18,747 $ 19,235 Line of credit — — — — 42,326 42,326 Agricultural & AG RE 150 — — 150 53,043 53,193 Construction, land & development 231 — 822 1,053 12,807 13,860 CRE - all other Owner occupied 319 175 739 1,233 141,089 142,322 Non-owner occupied 153 — 4,354 4,507 168,384 172,891 1-4 family residential Senior lien 1,172 277 1,068 2,517 58,151 60,668 Jr. lien & lines of credit 423 64 316 803 45,001 45,804 Consumer — — — — 2,901 2,901 Total $ 2,486 $ 516 $ 7,749 $ 10,751 $ 542,449 $ 553,200
Schedule of Loans Made to Executive Officers, Directors and their Affiliates	Loans made to executive officers, directors, and their affiliates during 2015 were as follows: Beginning balance $ 81 New loans, extensions, and modification 17 Repayments — Effect of changes in composition of related parties (52 ) Ending balance $ 46

Fair Value (Tables)

Fair Value (Tables)	12 Months Ended
	Dec. 31, 2015
Fair Value Disclosures [Abstract]
Summary of Assets and Liabilities Measured at Fair Value on a Recurring Basis	The following table summarizes, by measurement hierarchy, the various assets and liabilities of the Company that are measured at fair value on a recurring basis: Carrying Amount Quoted Prices in Active Markets For Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) December 31, 2015 U.S. government agencies $ 14,607 $ — $ 14,607 $ — State and political subdivisions 10,181 — 10,181 — U.S. government agency residential mortgage-backed securities 126,029 — 126,029 — Collateralized mortgage obligations: Agency 17,833 — 12,812 5,021 Equities 2,790 — 2,790 — Available-for-sale securities $ 171,440 $ — $ 166,419 $ 5,021 Carrying Amount Quoted Prices in Active Markets For Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) December 31, 2014 U.S. government agencies $ 21,109 $ — $ 21,109 $ — State and political subdivisions 9,028 — 9,028 — U.S. government agency residential mortgage-backed securities 99,668 — 99,668 — Collateralized mortgage obligations: Agency 38 — 38 — Equities 2,736 — 2,736 — Collateralized debt obligations: Single Issue 762 — 762 — Corporate 2,030 — 2,030 — Available-for-sale securities $ 135,371 $ — $ 135,371 $ —
Reconciliation of Assets Measured at Fair Value on a Recurring Basis	The following table reconciles the beginning and ending balances of the assets of the Company that are measured at fair value on a recurring basis using significant unobservable inputs. There currently are no liabilities of the Company that are measured at fair value on a recurring basis using significant unobservable inputs. Securities Available for Sale CDOs 2015 2014 Beginning balance, January 1 $ — $ 169 Transfers into Level 3 — — Total gains or losses (realized/unrealized) included in earnings Sales — (169 ) Security impairment — — Payment received — — Other changes in fair value — — Included in other comprehensive income — — Ending Balance, December 31 $ — $ —
Summary of Assets Measured at Fair Value on a Nonrecurring Basis	The following table presents quantitative information about Level 3 fair value measurements for financial instruments measured at fair value on a non-recurring basis at December 31, 2015 and December 31, 2014 : December 31, 2015 Fair Value Valuation Technique Unobservable Inputs Range (Weighted Average) Impaired loans Sales comparison approach Adjustment for differences between comparable sales 1-4 family residential Senior lien 572 10% - 60% (17%) OREO property CRE - construction, land & development 1,140 5% - 70% (27%) CRE - all other Non-owner occupied 468 5% - 50% (16%) 1-4 family residential Senior lien 131 6% - 55% (30%) December 31, 2014 Fair Value Valuation Technique Unobservable Inputs Range (Weighted Average) Impaired loans Sales comparison approach Adjustment for differences between comparable sales CRE - all other Owner occupied $ 184 10% - 55% (19%) Non-owner occupied 542 10% - 55% (11%) 1-4 family residential Senior lien 201 10% - 60% (57%) OREO property CRE - construction, land & development $ 2,823 5% - 70% (25%) CRE - all other Owner occupied 488 15% - 55% (21%) Non-owner occupied 1,111 5% - 50% (20%) 1-4 family residential Senior lien 47 6% - 55% (38%) The following table summarizes, by measurement hierarchy, financial assets of the Company that are measured at fair value on a non-recurring basis. Carrying Amount Quoted Prices in Active Markets For Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) December 31, 2015 Impaired loans 1-4 family residential Senior lien 572 — — 572 OREO property CRE - construction, land & development 1,140 — — 1,140 Non-owner occupied 468 — — 468 1-4 family residential Senior lien 131 — — 131 Carrying Amount Quoted Prices in Active Markets For Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) December 31, 2014 Impaired loans CRE - all other Owner occupied $ 184 $ — $ — $ 184 Non-owner occupied 542 — — 542 1-4 family residential Senior lien 201 — — 201 OREO property CRE - construction, land & development 2,823 — — 2,823 CRE - all other Owner occupied 488 — — 488 Non-owner occupied 1,111 — — 1,111 1-4 family residential Senior lien 47 — — 47
Schedule of Financial Instruments Estimated at Fair Value	The estimated fair values of the Company’s financial instruments are as follows: Fair Value measurements at December 31, 2015 Using Carrying Value Level 1 Level 2 Level 3 Total Financial assets Cash and cash equivalents $ 27,655 $ 27,655 $ — $ — $ 27,655 Securities 171,440 — 166,419 5,021 171,440 Restricted securities 9,116 — — — NA Loans held for sale 735 — 760 — 760 Net loans 624,956 — — 629,017 629,017 Accrued interest receivable 3,012 — 402 2,610 3,012 Financial liabilities Deposits $ 718,504 $ — $ 718,689 $ — $ 718,689 Federal funds purchased and securities sold under agreements to repurchase 18,730 — 18,730 — 18,730 Federal Home Loan Bank advances 76,000 — 76,271 — 76,271 Subordinated debentures 20,620 — — 13,933 13,933 Series B mandatorily redeemable preferred stock 268 — 273 — 273 Accrued interest payable 235 — 169 66 235 Fair Value measurements at December 31, 2014 Using Carrying Value Level 1 Level 2 Level 3 Total Financial assets Cash and cash equivalents $ 49,167 $ 44,167 $ 5,000 $ — $ 49,167 Securities 135,371 — 135,371 — 135,371 Restricted securities 6,102 — — — NA Loans held for sale 364 — 379 — 379 Net loans 545,219 — — 553,447 553,447 Accrued interest receivable 2,417 — 336 2,081 2,417 Financial liabilities Deposits $ 698,824 $ — $ 699,471 $ — $ 699,471 Federal funds purchased and securities sold under agreements to repurchase 26,691 — 26,691 — 26,691 Federal Home Loan Bank advances 20,000 — 20,546 — 20,546 Notes payable 10,250 — — 10,264 10,264 Subordinated debentures 20,620 — — 13,851 13,851 Series B mandatorily redeemable preferred stock 268 — 268 — 268 Accrued interest payable 5,142 — 369 4,773 5,142

Loan Sales and Servicing (Table

Loan Sales and Servicing (Tables)	12 Months Ended
	Dec. 31, 2015
Transfers and Servicing [Abstract]
Schedule of Loans Held for Sale	Loans held for sale at year end related to our secondary mortgage market activities, located in the "Loans held for sale" section of our balance sheet, are as follows: December 31, 2015 2014 Loans held for sale $ 735 $ 364 Less: Allowance to adjust to lower of cost or fair value — — Loans held for sale, net $ 735 $ 364
Schedule of Unpaid Principal Balances of Servicing Assets [Table Text Block]	The unpaid principal balances of these loans are summarized as follows: December 31, 2015 2014 Federal Home Loan Mortgage Corporation $ 17,614 $ 21,814 Federal National Mortgage Association 266,307 280,723 $ 283,921 $ 302,537
Summary of Mortgage Servicing Rights	Following is an analysis of the changes in originated mortgage servicing rights: Years Ended December 31, 2015 2014 Balance at beginning of year $ 2,240 $ 2,301 Originated mortgage servicing rights 230 232 Amortization (341 ) (293 ) Balance at end of year $ 2,129 $ 2,240
Schedule of Estimated Amortization Expenses, Servicing Rights	Estimated amortization expense for each of the next five years is as follows: 2016 $ 400 2017 270 2018 240 2019 230 2020 245 $ 1,385

Premises and Equipment (Tables)

Premises and Equipment (Tables)	12 Months Ended
	Dec. 31, 2015
Property, Plant and Equipment [Abstract]
Premises and Equipment	Premises and equipment consisted of: December 31, 2015 2014 Land $ 8,315 $ 9,426 Buildings 14,118 19,464 Furniture and equipment 13,188 13,133 Work in Process 84 401 35,705 42,424 Less accumulated depreciation 18,853 19,798 $ 16,852 $ 22,626

Deposits (Tables)

Deposits (Tables)	12 Months Ended
	Dec. 31, 2015
Banking and Thrift [Abstract]
Schedule of Maturities of Time Deposits	At December 31, 2015 , the scheduled maturities of time deposits are as follows: 2016 $ 132,611 2017 42,092 2018 6,080 2019 4,063 2020 2,485 $ 187,331

Securities Sold Under Agreeme34

Securities Sold Under Agreements To Repurchase (Tables)	12 Months Ended
	Dec. 31, 2015
Banking and Thrift [Abstract]
Schedule of Securities Sold Under Agreements To Repurchase	2015 2014 Average daily balance during the period $ 18,144 $ 18,560 Average interest rate during the period 0.27 % 0.29 % Maximum month end balance during the period $ 20,832 $ 26,691 Weighted average interest rate at period-end 0.26 % 0.28 %

Borrowed Funds and Debt Oblig35

Borrowed Funds and Debt Obligations (Tables)	12 Months Ended
	Dec. 31, 2015
Debt Disclosure [Abstract]
Scheduled of Maturities of Advances from FHLB	The scheduled maturities of advances from the FHLB are as follows: December 31, 2015 December 31, 2014 Year Average Interest Rate Amount Average Interest Rate Amount 2015 — % — — % — 2016 0.70 60,000 1.66 15,000 2017 1.14 11,000 — — 2018 3.64 5,000 3.64 5,000 2019 — — — — Thereafter — — — — 0.96 $ 76,000 2.16 $ 20,000
Schedule of Borrowed Funds	Information concerning borrowed funds is as follows: 2015 2014 Advances from the Federal Home Loan Bank Maximum month-end balance during the period $ 110,000 $ 35,000 Average balance during the period 64,370 26,466 Weighted average interest rate for the period 0.82 % 1.70 % Weighted average interest rate at period end 0.96 % 2.16 % Notes Payable Maximum month-end balance during the period $ 10,250 $ 10,250 Average balance during the period 2,499 10,250 Weighted average interest rate for the period 3.36 % 3.31 % Weighted average interest rate at period end — % 3.27 % Notes payable consisted of the following for the period ending December 31, 2014 : December 31, 2014 Term note ($250) from another financial institution; interest due quarterly at the 90-day LIBOR plus 2.95% with a floor of 6.50% at year-end 2014; secured by 100% of the stock of Centrue Bank. The balance was settled on March 31, 2015. See Note 1 for additional disclosure. $ 250 Subordinated debt note ($10,000) from another financial institution; interest due quarterly at the 90-day LIBOR plus 2.95%, which was 3.19% at December 31, 2014. The balance was settled on March 31, 2015. See Note 1 for additional disclosure. $ 10,000 $ 10,250

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Schedule of Tax Expense (Benefit)	Income tax expense (benefit) consisted of: Years Ended December 31, 2015 2014 Federal Current $ 126 $ — Deferred (126 ) (1,685 ) — (1,685 ) State Current — — Deferred — (371 ) — (371 ) Change in valuation allowance (37,484 ) 2,056 $ (37,484 ) $ —
Reconciliation of Income Tax Expense	The Company's income tax expense differed from the statutory federal rate of 34% as follows: Years Ended December 31, 2015 2014 Expected income taxes $ 1,740 $ (1,534 ) Income tax effect of Change in valuation allowance — 2,056 Valuation allowance reversal (39,759 ) — Interest earned on tax-free investments and loans (67 ) (91 ) Nondeductible interest expense incurred to carry tax-free investments and loans 1 2 State income taxes, net of federal tax benefit 191 (265 ) Earnings on Bank-owned life insurance (304 ) (302 ) Nondeductible meals and health club dues 33 23 Section 382 limitations 370 — Impact of state apportionment change 193 — Other 118 111 $ (37,484 ) $ —
Schedule of Components of Deferred Income Tax Assets and Liabilities	The significant components of deferred income tax assets and liabilities consisted of: December 31, 2015 December 31, 2014 Deferred tax assets Allowance for loan losses $ 3,342 $ 3,107 Deferred compensation, other 74 104 Stock based expense 87 130 Net operating loss carryforwards 34,180 36,955 Securities available-for-sale 405 — Deferred tax credits 823 697 OREO valuation allowance 1,059 1,080 Donation carryforward 5 232 Capital loss carryforward 4 4 Other 246 45 Total deferred tax assets 40,225 42,354 Deferred tax liabilities Depreciation $ (58 ) $ (41 ) Adjustments arising from acquisitions (146 ) (502 ) Mortgage servicing rights (828 ) (872 ) Securities available-for-sale — (166 ) Federal Home Loan Bank dividend received in stock (450 ) (451 ) Deferred loan fees & costs (399 ) (373 ) Prepaid expenses (164 ) (190 ) Total deferred tax liabilities (2,045 ) (2,595 ) Valuation allowance — (39,759 ) Net deferred tax assets $ 38,180 $ —

Share Based Compensation (Table

Share Based Compensation (Tables)	12 Months Ended
	Dec. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Summary of the Option Plan	A status summary of the option plan as of December 31, 2015 and changes during the period ended on that date are presented below: Shares Weighted-Average Exercise Price Weighted-Average Remaining Contractual Life Aggregate Intrinsic Value Outstanding at January 1, 2015 6,063 $ 447.19 Granted — — Exercised — — Forfeited (2,907 ) 564.96 Outstanding at end of period 3,156 $ 338.72 0.4 years $ — Vested or expected to vest 3,156 $ 338.72 0.4 years $ — Options exercisable at period end 3,156 $ 338.72 0.4 years $ —
Schedule of Options Outstanding	Options outstanding at December 31, 2015 and year-end 2014 were as follows: Outstanding Exercisable Range of Exercise Prices Number Weighted Average Remaining Contractual Life Number Weighted Average Exercise Price December 31, 2015: $157.20 - $390.00 2,160 0.2 years 2,160 $ 228.33 416.40 - 558.90 — 0.0 years — — 570.90 - 699.30 996 0.9 years 996 578.10 3,156 0.4 years 3,156 $ 338.72 December 31, 2014: $157.20 - $390.00 2,160 1.2 years 2,160 $ 228.33 416.40 - 558.90 2,077 0.2 years 2,077 543.29 570.90 - 699.30 1,826 1.6 years 1,826 596.78 6,063 1.0 year 6,063 $ 447.19

Regulatory Matters (Tables)

Regulatory Matters (Tables)	12 Months Ended
	Dec. 31, 2015
Banking and Thrift [Abstract]
Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations	Actual To Be Adequately Capitalized To Be Well Capitalized Under Prompt Corrective Action Provisions Amount Ratio Amount Ratio Amount Ratio As of December 31, 2015 Total capital (to risk-weighted assets) Centrue Financial $ 118,359 15.6 % $ 60,525 8.0 % N/A N/A Centrue Bank 117,807 15.6 60,463 8.0 75,579 10.0 Common equity tier I (to risk-weighted assets) Centrue Financial $ 107,678 14.2 $ 34,045 4.5 N/A N/A Centrue Bank 109,216 14.5 34,011 4.5 49,126 6.5 Tier I capital (to risk-weighted assets) Centrue Financial $ 109,768 14.5 $ 45,394 6.0 N/A N/A Centrue Bank 109,216 14.5 45,347 6.0 60,463 8.0 Tier I leverage ratio (to average assets) Centrue Financial $ 109,768 12.1 $ 40,819 4.5 N/A N/A Centrue Bank 109,216 12.0 41,068 4.5 45,631 5.0 Actual To Be Adequately Capitalized To Be Well Capitalized Under Prompt Corrective Action Provisions Amount Ratio Amount Ratio Amount Ratio As of December 31, 2014 Total capital (to risk-weighted assets) Centrue Financial $ 57,829 9.6 % $ 47,991 8.0 % N/A N/A Centrue Bank 70,717 11.8 47,792 8.0 59,740 10.0 Tier I capital (to risk-weighted assets) Centrue Financial $ 41,118 6.9 $ 23,995 4.0 N/A N/A Centrue Bank 63,243 10.6 23,896 4.0 35,844 6.0 Tier I leverage ratio (to average assets) Centrue Financial $ 41,118 4.9 $ 33,345 4.0 N/A N/A Centrue Bank 63,243 7.6 33,231 4.0 41,539 5.0

Commitments, Contingencies, a39

Commitments, Contingencies, and Credit Risk (Tables)	12 Months Ended
	Dec. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Financial Instruments Commitments	Financial instruments whose contract amounts represent credit risk are as follows: Standby Letters of Credit Variable Rate Commitments Fixed Rate Commitments Total Commitments Range of Rates on Fixed Rate Commitments Commitments December 31, 2015 $ 1,970 $ 120,173 $ 29,681 $ 151,824 2.60% - 18.00% December 31, 2014 2,025 87,818 25,424 115,267 2.00% - 18.00%
Schedule of Future Minimum Rental Payments for Operating Leases	Rent commitments, before considering renewal options that generally are present, were as follows: 2016 $ 282 2017 230 2018 182 2019 98 2020 — Total $ 792

Parent Company Only Condensed40

Parent Company Only Condensed Financial Information (Tables)	12 Months Ended
	Dec. 31, 2015
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
Balance Sheets (Parent Company Only)	Balance Sheets (Parent Company Only) December 31, 2015 2014 ASSETS Cash and cash equivalents $ 741 $ 764 Securities available for sale 27 27 Investment in subsidiary 135,576 64,008 Other assets 6,075 1,804 $ 142,419 $ 66,603 LIABILITIES AND STOCKHOLDERS' EQUITY Notes payable $ — $ 10,250 Mandatory redeemable preferred stock 268 268 Trust Preferred Stock 20,620 20,620 Other liabilities 250 5,137 21,138 36,275 Stockholders' equity 121,281 30,328 $ 142,419 $ 66,603
Income (Loss) Statements (Parent Company Only)	Income (Loss) Statements (Parent Company Only) Years Ended December 31, 2015 2014 Dividends from subsidiary $ — $ — Interest income 16 18 Other income 1,754 753 Interest expense 645 955 Other expense 1,055 437 Income tax expense (benefit) (6,068 ) — Equity in undistributed earnings of subsidiaries 36,464 (3,890 ) Net income (loss) 42,602 (4,511 ) Preferred stock dividends 1,484 3,569 Discount on redemption of preferred stock (13,668 ) — Net income (loss) for common stockholders $ 54,786 $ (8,080 )
Statements of Cash Flows (Parent Company Only)	Statements of Cash Flows (Parent Company Only) Years Ended December 31, 2015 2014 Cash flows from operating activities Net income (loss) $ 42,602 $ (4,511 ) Adjustments to reconcile net income (loss) to net cash provided by operating activities Undistributed (earnings) loss of subsidiary (36,464 ) 3,890 Share based compensation 461 — Gain from extinguishment of debt (1,750 ) — Increase in other assets (4,271 ) (1,675 ) (Decrease) increase in other liabilities (4,871 ) 699 Net cash used in operating activities (4,293 ) (1,597 ) Cash flows from investing activities Capital infusion to subsidiary $ (36,000 ) $ — Net cash provided by investing activities (36,000 ) — Cash flows from financing activities Repayment of notes payable $ (8,500 ) $ — Purchase of Tarp Warrants — (2 ) Proceeds from issuance of common stock 68,248 — Purchase of treasury stock — (1,255 ) Redemption of Series A Convertible Preferred Stock — (500 ) Redemption of Series C Cumulative Perpetual Preferred Stock (19,000 ) — Issuance of Series D Non-Cumulative Perpetual Preferred Stock — 2,636 Dividends paid on preferred stock (478 ) (881 ) Net cash used in financing activities 40,270 (2 ) Net decrease in cash and cash equivalents $ (23 ) $ (1,599 ) Cash and cash equivalents Beginning of period 764 2,363 End of period $ 741 $ 764

Earnings Per Share (Tables)

Earnings Per Share (Tables)	12 Months Ended
	Dec. 31, 2015
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted	A reconciliation of the numerators and denominators for earnings per common share computations for the years ended December 31, 2015 and 2014 is presented below (shares in thousands). Common shares, options and per share amounts for both periods shown have been restated to reflect the impact of the reverse stock split the Company completed effective May 29 th , 2015. Options to purchase 3,156 and 6,063 shares of common stock were outstanding for December 31, 2015 and 2014 , respectively; but were not included in the computation of diluted earnings per share because the exercise price was greater than the average market price and, therefore, were anti-dilutive. 2015 2014 Basic Earnings (Loss) Per Common Share Net income (loss) $ 42,602 $ (4,511 ) Preferred stock dividends (1,484 ) (3,569 ) Discount on redemption of preferred stock 13,668 — Net income (loss) for common shareholders $ 54,786 $ (8,080 ) Weighted average common shares outstanding 4,945,073 180,320 Basic earnings per common share $ 11.08 $ (44.81 ) Diluted Earnings Per Common Share Weighted average common shares outstanding 4,945,073 180,320 Add: dilutive effect of assumed exercised stock options — — Add: dilutive effect of assumed exercised common stock warrants — — Weighted average common and dilutive potential shares outstanding 4,945,073 180,320 Diluted earnings (loss) per common share $ 11.08 $ (44.81 )

Quarterly Financial Data (Una42

Quarterly Financial Data (Unaudited) (Tables)	12 Months Ended
	Dec. 31, 2015
Quarterly Financial Information Disclosure [Abstract]
Schedule of Quarterly Financial Data	Interest Net Interest Net Earnings Per Share Income Income Income Basic Diluted 2015 First Quarter $ 6,734 $ 6,040 $ 1,867 $ 65.60 $ 65.60 Second Quarter 7,007 6,446 1,053 0.16 0.16 Third Quarter 7,336 6,737 1,088 0.11 0.11 Fourth Quarter 7,678 7,081 38,594 5.92 5.92 2014 First Quarter $ 6,973 $ 6,026 $ 558 $ (1.12 ) $ (1.12 ) Second Quarter 6,928 6,017 374 (3.06 ) (3.06 ) Third Quarter 6,947 6,076 573 (1.41 ) (1.41 ) Fourth Quarter 6,747 5,976 (6,016 ) (46.32 ) (46.32 )

Summary of Significant Accoun43

Summary of Significant Accounting Policies - Additional (Details) $ in Thousands	May. 29, 2015	Dec. 31, 2015USD ($)	Dec. 31, 2014USD ($)
Property, Plant and Equipment [Line Items]
Stock split conversion ratio	30
Service fees		$ 492	$ 616
Amortization period of intangible assets		10 years
Minimum | Buildings
Property, Plant and Equipment [Line Items]
Premises and equipment useful life		25 years
Minimum | Building improvements
Property, Plant and Equipment [Line Items]
Premises and equipment useful life		3 years
Minimum | Furniture and equipment
Property, Plant and Equipment [Line Items]
Premises and equipment useful life		3 years
Maximum | Buildings
Property, Plant and Equipment [Line Items]
Premises and equipment useful life		40 years
Maximum | Building improvements
Property, Plant and Equipment [Line Items]
Premises and equipment useful life		15 years
Maximum | Furniture and equipment
Property, Plant and Equipment [Line Items]
Premises and equipment useful life		10 years

Summary of Significant Accoun44

Summary of Significant Accounting Policies - Stockholders' Equity (Details) - USD ($)	Mar. 31, 2015	Jul. 29, 2014	Dec. 31, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Proceeds from issuance of private placement	$ 76,000,000
Proceeds from issuance of private placement, net	68,200,000
Registration costs	7,800,000
Interest paid			$ 7,358,000	$ 3,155,000
Stock redeemed during period, value			19,000,000
Payments for repurchase of redeemable preferred stock			$ 19,000,000	$ 0
Payments for capital contribution to subsidiary bank	36,000,000
Preferred stock authorized (in shares)			200,000
Series C Preferred Stock
Debt Instrument [Line Items]
Stock redeemed during period, value	32,700,000
Payments for repurchase of redeemable preferred stock	19,000,000
Preferred stock authorized (in shares)			0
Preferred stock issued (in shares)			0
Preferred stock, shares outstanding (in shares)			0
Dividends in arrears			$ 0
Stock redeemed (in shares)			32,668
Series A Convertible Preferred Stock
Debt Instrument [Line Items]
Preferred stock authorized (in shares)			0
Preferred stock issued (in shares)			0
Preferred stock, shares outstanding (in shares)			0
Series A Convertible Preferred Stock | Series A Preferred Stock and all dividends in arrears
Debt Instrument [Line Items]
Conversion of stock, shares converted (in shares)		2,762.24
Series D Preferred Stock
Debt Instrument [Line Items]
Preferred stock authorized (in shares)				2,636
Preferred stock issued (in shares)				2,636
Liquidation preference (in dollars per share)				$ 1,000
Preferred stock, dividend rate				12.50%
Series D Preferred Stock | Series A Preferred Stock and all dividends in arrears
Debt Instrument [Line Items]
Conversion of stock, shares issued (in shares)		1,381.12
Series B Preferred Stock
Debt Instrument [Line Items]
Preferred stock authorized (in shares)			1,092
Preferred stock issued (in shares)			268	268
Preferred stock, shares outstanding (in shares)			268	268
Dividend rate (in dollars per share)			$ 60
Preferred stock, redemption price (in dollars per share)			$ 1,000
Dividends in arrears			$ 0	$ 88,400
Subordinated debt
Debt Instrument [Line Items]
Interest paid	4,900,000
Secured debt
Debt Instrument [Line Items]
Notes payable, repurchased face amount	10,300,000
Repayments of lines of credit	$ 8,500,000
Private placement offering
Debt Instrument [Line Items]
Number of shares sold (in shares)	6,300,000
Offering price (in dollars per share)	$ 12

Securities - Related Gross Unre

Securities - Related Gross Unrealized Gains and Losses and Amortized Cost (Details) - USD ($)	Dec. 31, 2015	Dec. 31, 2014
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 172,480,000	$ 134,945,000
Gross Unrealized Gains	194,000	822,000
Gross Unrealized Losses	(1,234,000)	(396,000)
Securities available-for-sale	171,440,000	135,371,000
U.S. government agencies
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	14,629,000	21,274,000
Gross Unrealized Gains	13,000	6,000
Gross Unrealized Losses	(35,000)	(171,000)
Securities available-for-sale	14,607,000	21,109,000
States and political subdivisions
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	10,190,000	8,951,000
Gross Unrealized Gains	16,000	78,000
Gross Unrealized Losses	(25,000)	(1,000)
Securities available-for-sale	10,181,000	9,028,000
U.S. government agency residential mortgage-backed securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	127,039,000	99,338,000
Gross Unrealized Gains	7,000	551,000
Gross Unrealized Losses	(1,017,000)	(221,000)
Securities available-for-sale	126,029,000	99,668,000
Collateralized residential mortgage obligations: Agency
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	17,990,000	38,000
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(157,000)	0
Securities available-for-sale	17,833,000	38,000
Equity securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	2,632,000	2,579,000
Gross Unrealized Gains	158,000	157,000
Gross Unrealized Losses	0	0
Securities available-for-sale	2,790,000	2,736,000
Collateralized debt obligations: Single issue
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost		765,000
Gross Unrealized Gains		0
Gross Unrealized Losses		(3,000)
Securities available-for-sale	0	762,000
Corporate
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	0	2,000,000
Gross Unrealized Gains	0	30,000
Gross Unrealized Losses	0	0
Securities available-for-sale	$ 0	$ 2,030,000

Securities - Activity for Avail

Securities - Activity for Available-for-Sale (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Investments, Debt and Equity Securities [Abstract]
Proceeds from calls and maturities	$ 5,965	$ 2,165
Proceeds from sales of securities available for sale	91,409	60,161
Realized gains	519	1,258
Realized losses	(180)	(329)
Net impairment loss recognized in earnings	$ 0	$ 0

Securities - Contractual Maturi

Securities - Contractual Maturities (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Amortized Cost
Due in one year or less	$ 2,592
Due after one year through five years	9,075
Due after five years through ten years	8,173
Due after ten years	4,979
Equity	2,632
Available-for-sale securities, amortized cost basis	172,480	$ 134,945
Fair Value
Due in one year or less	2,600
Due after one year through five years	9,076
Due after five years through ten years	8,151
Due after ten years	4,961
Equity	2,790
Securities available-for-sale	171,440	135,371
U.S. government agency residential mortgage-backed securities
Amortized Cost
Securities without single maturity date, amortized cost basis	127,039
Available-for-sale securities, amortized cost basis	127,039	99,338
Fair Value
Securities without single maturity date, fair value	126,029
Securities available-for-sale	126,029	99,668
Collateralized residential mortgage obligations
Amortized Cost
Securities without single maturity date, amortized cost basis	17,990
Available-for-sale securities, amortized cost basis	17,990	38
Fair Value
Securities without single maturity date, fair value	17,833
Securities available-for-sale	$ 17,833	$ 38

Securities - Continuous Unreali

Securities - Continuous Unrealized Loss Position (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	$ 158,695	$ 53,407
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(1,234)	(369)
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	0	4,896
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	0	(27)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	158,695	58,303
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	(1,234)	(396)
U.S. government agencies
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	10,394	18,212
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(35)	(157)
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	0	1,986
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	0	(14)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	10,394	20,198
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	(35)	(171)
States and political subdivisions
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	6,057	386
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(25)	(1)
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	0	0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	0	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	6,057	386
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	(25)	(1)
U.S. government agency residential mortgage-backed securities
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	124,411	34,809
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(1,017)	(211)
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	0	2,148
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	0	(10)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	124,411	36,957
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	(1,017)	(221)
Collateralized residential mortgage obligations
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	17,833
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(157)
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	17,833
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	(157)
Corporate
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	$ 0
Collateralized debt obligations: Single issue
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value		0
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss		0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value		762
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss		(3)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value		762
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss		$ (3)

Securities - Narrative (Details

Securities - Narrative (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2015USD ($)security	Dec. 31, 2014USD ($)security
Schedule of Available-for-sale Securities [Line Items]
Carrying value of securities pledged	$ 114,900	$ 115,900
Securities available-for-sale	$ 171,440	$ 135,371
Total number of securities | security	59	67
Number of securities in an unrealized loss position | security	46	16
U.S. government agency residential mortgage-backed securities
Schedule of Available-for-sale Securities [Line Items]
Securities available-for-sale	$ 126,029	$ 99,668
Investment concentration | Stockholders' Equity | Ottawa High School
Schedule of Available-for-sale Securities [Line Items]
Securities available-for-sale		$ 4,800
Investment concentration | Collateralized mortgage backed securities | U.S. government agency residential mortgage-backed securities
Schedule of Available-for-sale Securities [Line Items]
Issuer is other than U.S. Government agencies, stockholders' equity threshold	100.00%	99.96%

Loans - Classification of Loans

Loans - Classification of Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	$ 633,547	$ 553,200
Allowance for loan losses	(8,591)	(7,981)	$ (11,637)
Loans, net	624,956	545,219
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	67,360	61,561
Allowance for loan losses	(648)	(1,117)	(1,413)
Agriculture & AG RE
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	50,121	53,193
Allowance for loan losses	(97)	(69)	(70)
Construction, Land & Development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	26,016	13,860
Allowance for loan losses	(523)	(711)	(1,127)
Commercial RE
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	391,918	315,213
Allowance for loan losses	(5,681)	(3,999)	(6,834)
1-4 Family Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	95,227	106,472
Allowance for loan losses	(1,628)	(2,075)	(2,162)
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	2,905	2,901
Allowance for loan losses	$ (14)	$ (10)	$ (31)

Loans - Internal Risk Rating (D

Loans - Internal Risk Rating (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Financing Receivable, Recorded Investment [Line Items]
Total Loans	$ 633,547	$ 553,200
Internal Noninvestment Grade
Financing Receivable, Recorded Investment [Line Items]
Total Loans	535,415	443,827
Pass
Financing Receivable, Recorded Investment [Line Items]
Total Loans	510,840	423,643
Special mention
Financing Receivable, Recorded Investment [Line Items]
Total Loans	19,831	8,487
Substandard
Financing Receivable, Recorded Investment [Line Items]
Total Loans	4,744	11,697
Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total Loans	0	0
Commercial
Financing Receivable, Recorded Investment [Line Items]
Total Loans	67,360	61,561
Agriculture & AG RE
Financing Receivable, Recorded Investment [Line Items]
Total Loans	50,121	53,193
Agriculture & AG RE | Internal Noninvestment Grade
Financing Receivable, Recorded Investment [Line Items]
Total Loans	50,121	53,193
Agriculture & AG RE | Pass
Financing Receivable, Recorded Investment [Line Items]
Total Loans	50,121	53,193
Agriculture & AG RE | Special mention
Financing Receivable, Recorded Investment [Line Items]
Total Loans	0	0
Agriculture & AG RE | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total Loans	0	0
Agriculture & AG RE | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total Loans	0	0
Construction, Land & Development
Financing Receivable, Recorded Investment [Line Items]
Total Loans	26,016	13,860
Construction, Land & Development | Internal Noninvestment Grade
Financing Receivable, Recorded Investment [Line Items]
Total Loans	26,016	13,860
Construction, Land & Development | Pass
Financing Receivable, Recorded Investment [Line Items]
Total Loans	25,825	13,038
Construction, Land & Development | Special mention
Financing Receivable, Recorded Investment [Line Items]
Total Loans	64	0
Construction, Land & Development | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total Loans	127	822
Construction, Land & Development | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total Loans	0	0
Commercial RE
Financing Receivable, Recorded Investment [Line Items]
Total Loans	391,918	315,213
1-4 Family Residential
Financing Receivable, Recorded Investment [Line Items]
Total Loans	95,227	106,472
1-4 Family Residential | Senior Lien
Financing Receivable, Recorded Investment [Line Items]
Total Loans	53,366	60,668
1-4 Family Residential | Jr. Lien & Lines of Credit
Financing Receivable, Recorded Investment [Line Items]
Total Loans	41,861	45,804
1-4 Family Residential | Unrated
Financing Receivable, Recorded Investment [Line Items]
Total Loans	89,699	100,441
1-4 Family Residential | Unrated | Senior Lien
Financing Receivable, Recorded Investment [Line Items]
Total Loans	48,319	55,142
1-4 Family Residential | Unrated | Jr. Lien & Lines of Credit
Financing Receivable, Recorded Investment [Line Items]
Total Loans	41,380	45,299
1-4 Family Residential | Special mention
Financing Receivable, Recorded Investment [Line Items]
Total Loans	4,179	3,927
1-4 Family Residential | Special mention | Senior Lien
Financing Receivable, Recorded Investment [Line Items]
Total Loans	4,011	3,807
1-4 Family Residential | Special mention | Jr. Lien & Lines of Credit
Financing Receivable, Recorded Investment [Line Items]
Total Loans	168	120
1-4 Family Residential | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total Loans	1,349	2,104
1-4 Family Residential | Substandard | Senior Lien
Financing Receivable, Recorded Investment [Line Items]
Total Loans	1,036	1,719
1-4 Family Residential | Substandard | Jr. Lien & Lines of Credit
Financing Receivable, Recorded Investment [Line Items]
Total Loans	313	385
1-4 Family Residential | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total Loans	0	0
1-4 Family Residential | Doubtful | Senior Lien
Financing Receivable, Recorded Investment [Line Items]
Total Loans	0	0
1-4 Family Residential | Doubtful | Jr. Lien & Lines of Credit
Financing Receivable, Recorded Investment [Line Items]
Total Loans	0	0
Closed-end | Commercial
Financing Receivable, Recorded Investment [Line Items]
Total Loans	24,736	19,235
Closed-end | Commercial | Internal Noninvestment Grade
Financing Receivable, Recorded Investment [Line Items]
Total Loans	24,736	19,235
Closed-end | Commercial | Pass
Financing Receivable, Recorded Investment [Line Items]
Total Loans	24,303	18,379
Closed-end | Commercial | Special mention
Financing Receivable, Recorded Investment [Line Items]
Total Loans	304	392
Closed-end | Commercial | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total Loans	129	464
Closed-end | Commercial | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total Loans	0	0
Line of credit | Commercial
Financing Receivable, Recorded Investment [Line Items]
Total Loans	42,624	42,326
Line of credit | Commercial | Internal Noninvestment Grade
Financing Receivable, Recorded Investment [Line Items]
Total Loans	42,624	42,326
Line of credit | Commercial | Pass
Financing Receivable, Recorded Investment [Line Items]
Total Loans	42,374	42,076
Line of credit | Commercial | Special mention
Financing Receivable, Recorded Investment [Line Items]
Total Loans	250	250
Line of credit | Commercial | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total Loans	0	0
Line of credit | Commercial | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total Loans	0	0
Owner occupied | Commercial RE
Financing Receivable, Recorded Investment [Line Items]
Total Loans	172,651	142,322
Owner occupied | Commercial RE | Internal Noninvestment Grade
Financing Receivable, Recorded Investment [Line Items]
Total Loans	172,651	142,322
Owner occupied | Commercial RE | Pass
Financing Receivable, Recorded Investment [Line Items]
Total Loans	164,538	139,617
Owner occupied | Commercial RE | Special mention
Financing Receivable, Recorded Investment [Line Items]
Total Loans	7,701	1,225
Owner occupied | Commercial RE | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total Loans	412	1,480
Owner occupied | Commercial RE | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total Loans	0	0
Non-owner occupied | Commercial RE
Financing Receivable, Recorded Investment [Line Items]
Total Loans	219,267	172,891
Non-owner occupied | Commercial RE | Internal Noninvestment Grade
Financing Receivable, Recorded Investment [Line Items]
Total Loans	219,267	172,891
Non-owner occupied | Commercial RE | Pass
Financing Receivable, Recorded Investment [Line Items]
Total Loans	203,679	157,340
Non-owner occupied | Commercial RE | Special mention
Financing Receivable, Recorded Investment [Line Items]
Total Loans	11,512	6,620
Non-owner occupied | Commercial RE | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total Loans	4,076	8,931
Non-owner occupied | Commercial RE | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total Loans	$ 0	$ 0

Loans - Activity in the Allowan

Loans - Activity in the Allowance for Loan Losses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Balance	$ 7,981	$ 11,637
Charge-offs	(1,763)	(11,887)
Recoveries	1,998	1,029
Provision	375	7,202
Ending Balance	8,591	7,981
Commercial
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Balance	1,117	1,413
Charge-offs	(384)	(2,277)
Recoveries	197	373
Provision	(282)	1,608
Ending Balance	648	1,117
Agriculture & AG RE
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Balance	69	70
Charge-offs	0	0
Recoveries	3	3
Provision	25	(4)
Ending Balance	97	69
Construction, Land & Development
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Balance	711	1,127
Charge-offs	(4)	(953)
Recoveries	52	35
Provision	(236)	502
Ending Balance	523	711
Commercial RE
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Balance	3,999	6,834
Charge-offs	(702)	(6,938)
Recoveries	1,663	547
Provision	721	3,556
Ending Balance	5,681	3,999
1-4 Family Residential
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Balance	2,075	2,162
Charge-offs	(667)	(1,712)
Recoveries	52	65
Provision	168	1,560
Ending Balance	1,628	2,075
Consumer
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Balance	10	31
Charge-offs	(6)	(7)
Recoveries	31	6
Provision	(21)	(20)
Ending Balance	$ 14	$ 10

Loans - Evaluated for Impairmen

Loans - Evaluated for Impairment (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Allowance for loan losses:
Loans individually evaluated for impairment	$ 1,594	$ 1,555
Loans collectively evaluated for impairment	6,997	6,426
Total ending allowance balance:	8,591	7,981	$ 11,637
Loan balances:
Loans individually evaluated for impairment	6,093	9,303
Loans collectively evaluated for impairment	627,454	543,897
Loans with an allowance recorded:	633,547	553,200
Commercial
Allowance for loan losses:
Loans individually evaluated for impairment	80	430
Loans collectively evaluated for impairment	568	687
Total ending allowance balance:	648	1,117	1,413
Loan balances:
Loans individually evaluated for impairment	129	464
Loans collectively evaluated for impairment	67,231	61,097
Loans with an allowance recorded:	67,360	61,561
Agriculture & AG RE
Allowance for loan losses:
Loans individually evaluated for impairment	0	0
Loans collectively evaluated for impairment	97	69
Total ending allowance balance:	97	69	70
Loan balances:
Loans individually evaluated for impairment	0	0
Loans collectively evaluated for impairment	50,121	53,193
Loans with an allowance recorded:	50,121	53,193
Construction, Land & Development
Allowance for loan losses:
Loans individually evaluated for impairment	10	126
Loans collectively evaluated for impairment	513	585
Total ending allowance balance:	523	711	1,127
Loan balances:
Loans individually evaluated for impairment	127	822
Loans collectively evaluated for impairment	25,889	13,038
Loans with an allowance recorded:	26,016	13,860
Commercial RE
Allowance for loan losses:
Loans individually evaluated for impairment	1,178	216
Loans collectively evaluated for impairment	4,503	3,783
Total ending allowance balance:	5,681	3,999	6,834
Loan balances:
Loans individually evaluated for impairment	4,488	5,961
Loans collectively evaluated for impairment	387,430	309,252
Loans with an allowance recorded:	391,918	315,213
1-4 Family Residential
Allowance for loan losses:
Loans individually evaluated for impairment	325	783
Loans collectively evaluated for impairment	1,303	1,292
Total ending allowance balance:	1,628	2,075	2,162
Loan balances:
Loans individually evaluated for impairment	1,348	2,056
Loans collectively evaluated for impairment	93,879	104,416
Loans with an allowance recorded:	95,227	106,472
Consumer
Allowance for loan losses:
Loans individually evaluated for impairment	1	0
Loans collectively evaluated for impairment	13	10
Total ending allowance balance:	14	10	$ 31
Loan balances:
Loans individually evaluated for impairment	1	0
Loans collectively evaluated for impairment	2,904	2,901
Loans with an allowance recorded:	$ 2,905	$ 2,901

Loans - Modified as Troubled De

Loans - Modified as Troubled Debt Restructuring (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2015USD ($)contract	Dec. 31, 2014USD ($)contract
Financing Receivable, Modifications [Line Items]
Number of Loans | contract	3	2
Pre-Modification Recorded Investment	$ 241	$ 5,047
Post-Modification Recorded Investment	$ 241	$ 5,047
1-4 Family Residential | Senior Lien
Financing Receivable, Modifications [Line Items]
Number of Loans | contract	3
Pre-Modification Recorded Investment	$ 241
Post-Modification Recorded Investment	$ 241
1-4 Family Residential | Jr. Lien & Lines of Credit
Financing Receivable, Modifications [Line Items]
Number of Loans | contract		1
Pre-Modification Recorded Investment		$ 34
Post-Modification Recorded Investment		$ 34
Construction, Land & Development
Financing Receivable, Modifications [Line Items]
Number of Loans | contract		1
Pre-Modification Recorded Investment		$ 5,013
Post-Modification Recorded Investment		$ 5,013

Loans - Impaired Loans (Details

Loans - Impaired Loans (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Loans with no related allowance recorded:
Recorded Investment	$ 255	$ 5,667
Unpaid Principal Balance	255	6,580
Average Recorded Investment	757	9,730
Interest Income Recognized	4	106
Cash Basis Interest Recognized	4	104
Loans with an allowance recorded:
Recorded Investment	5,838	3,636
Unpaid Principal Balance	7,268	3,940
Related Allowance	1,594	1,555
Average Recorded Investment	6,239	19,343
Interest Income Recognized	49	54
Cash Basis Interest Recognized	43	45
Recorded Investment, Total	6,093	9,303
Unpaid Principal Balance, Total	7,523	10,520
Average Recorded Investment, Total	6,996	29,073
Interest Income Recognized, Total	53	160
Cash Basis Interest Recognized, Total	47	149
Commercial | Closed-end
Loans with no related allowance recorded:
Recorded Investment	2	5
Unpaid Principal Balance	2	5
Average Recorded Investment	15	15
Interest Income Recognized	1	0
Cash Basis Interest Recognized	1	0
Loans with an allowance recorded:
Recorded Investment	127	459
Unpaid Principal Balance	127	459
Related Allowance	80	430
Average Recorded Investment	199	1,228
Interest Income Recognized	2	4
Cash Basis Interest Recognized	2	4
Commercial | Line of credit
Loans with no related allowance recorded:
Recorded Investment	0	0
Unpaid Principal Balance	0	0
Average Recorded Investment	0	0
Interest Income Recognized	0	0
Cash Basis Interest Recognized	0	0
Loans with an allowance recorded:
Recorded Investment	0	0
Unpaid Principal Balance	0	0
Related Allowance	0	0
Average Recorded Investment	0	940
Interest Income Recognized	0	0
Cash Basis Interest Recognized	0	0
Agriculture & AG RE
Loans with no related allowance recorded:
Recorded Investment	0	0
Unpaid Principal Balance	0	0
Average Recorded Investment	0	0
Interest Income Recognized	0	0
Cash Basis Interest Recognized	0	0
Loans with an allowance recorded:
Recorded Investment	0	0
Unpaid Principal Balance	0	0
Related Allowance	0	0
Average Recorded Investment	0	0
Interest Income Recognized	0	0
Cash Basis Interest Recognized	0	0
Construction, Land & Development
Loans with no related allowance recorded:
Recorded Investment	0	648
Unpaid Principal Balance	0	1,122
Average Recorded Investment	299	221
Interest Income Recognized	0	11
Cash Basis Interest Recognized	0	11
Loans with an allowance recorded:
Recorded Investment	127	174
Unpaid Principal Balance	419	332
Related Allowance	10	126
Average Recorded Investment	120	3,833
Interest Income Recognized	0	0
Cash Basis Interest Recognized	0	0
Commercial RE | Owner occupied
Loans with no related allowance recorded:
Recorded Investment	6	221
Unpaid Principal Balance	6	261
Average Recorded Investment	78	3,337
Interest Income Recognized	0	10
Cash Basis Interest Recognized	0	9
Loans with an allowance recorded:
Recorded Investment	406	766
Unpaid Principal Balance	541	901
Related Allowance	100	138
Average Recorded Investment	586	3,305
Interest Income Recognized	11	2
Cash Basis Interest Recognized	9	0
Commercial RE | Non-owner occupied
Loans with no related allowance recorded:
Recorded Investment	0	4,354
Unpaid Principal Balance	0	4,753
Average Recorded Investment	0	4,084
Interest Income Recognized	0	74
Cash Basis Interest Recognized	0	74
Loans with an allowance recorded:
Recorded Investment	4,076	620
Unpaid Principal Balance	4,955	620
Related Allowance	1,078	78
Average Recorded Investment	4,101	7,737
Interest Income Recognized	17	2
Cash Basis Interest Recognized	17	0
1-4 Family Residential | Senior Lien
Loans with no related allowance recorded:
Recorded Investment	176	319
Unpaid Principal Balance	176	319
Average Recorded Investment	277	1,931
Interest Income Recognized	0	5
Cash Basis Interest Recognized	0	4
Loans with an allowance recorded:
Recorded Investment	859	1,352
Unpaid Principal Balance	984	1,352
Related Allowance	215	660
Average Recorded Investment	1,003	2,032
Interest Income Recognized	14	36
Cash Basis Interest Recognized	10	32
1-4 Family Residential | Jr. Lien & Lines of Credit
Loans with no related allowance recorded:
Recorded Investment	71	120
Unpaid Principal Balance	71	120
Average Recorded Investment	88	142
Interest Income Recognized	3	6
Cash Basis Interest Recognized	3	6
Loans with an allowance recorded:
Recorded Investment	242	265
Unpaid Principal Balance	242	276
Related Allowance	110	123
Average Recorded Investment	230	268
Interest Income Recognized	5	10
Cash Basis Interest Recognized	5	9
Consumer
Loans with no related allowance recorded:
Recorded Investment	0	0
Unpaid Principal Balance	0	0
Average Recorded Investment	0	0
Interest Income Recognized	0	0
Cash Basis Interest Recognized	0	0
Loans with an allowance recorded:
Recorded Investment	1	0
Unpaid Principal Balance	0	0
Related Allowance	1	0
Average Recorded Investment	0	0
Interest Income Recognized	0	0
Cash Basis Interest Recognized	$ 0	$ 0

Loans - Aging Activity (Details

Loans - Aging Activity (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	$ 9,042	$ 10,751
Current	624,505	542,449
Loans with an allowance recorded:	633,547	553,200
30 - 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	2,755	2,486
60 - 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	280	516
90 Days Past Due or Nonaccrual
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	6,007	7,749
Commercial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans with an allowance recorded:	67,360	61,561
Commercial | Closed-end
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	188	488
Current	24,548	18,747
Loans with an allowance recorded:	24,736	19,235
Commercial | Closed-end | 30 - 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	58	38
Commercial | Closed-end | 60 - 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Commercial | Closed-end | 90 Days Past Due or Nonaccrual
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	130	450
Commercial | Line of credit
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Current	42,624	42,326
Loans with an allowance recorded:	42,624	42,326
Commercial | Line of credit | 30 - 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Commercial | Line of credit | 60 - 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Commercial | Line of credit | 90 Days Past Due or Nonaccrual
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Agriculture & AG RE
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	150
Current	50,121	53,043
Loans with an allowance recorded:	50,121	53,193
Agriculture & AG RE | 30 - 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	150
Agriculture & AG RE | 60 - 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Agriculture & AG RE | 90 Days Past Due or Nonaccrual
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Construction, Land & Development
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	127	1,053
Current	25,889	12,807
Loans with an allowance recorded:	26,016	13,860
Construction, Land & Development | 30 - 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	231
Construction, Land & Development | 60 - 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Construction, Land & Development | 90 Days Past Due or Nonaccrual
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	127	822
Commercial RE
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans with an allowance recorded:	391,918	315,213
Commercial RE | Owner occupied
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,397	1,233
Current	171,254	141,089
Loans with an allowance recorded:	172,651	142,322
Commercial RE | Owner occupied | 30 - 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	985	319
Commercial RE | Owner occupied | 60 - 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	175
Commercial RE | Owner occupied | 90 Days Past Due or Nonaccrual
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	412	739
Commercial RE | Non-owner occupied
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	4,076	4,507
Current	215,191	168,384
Loans with an allowance recorded:	219,267	172,891
Commercial RE | Non-owner occupied | 30 - 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	153
Commercial RE | Non-owner occupied | 60 - 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Commercial RE | Non-owner occupied | 90 Days Past Due or Nonaccrual
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	4,076	4,354
1-4 Family Residential
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans with an allowance recorded:	95,227	106,472
1-4 Family Residential | Senior Lien
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	2,496	2,517
Current	50,870	58,151
Loans with an allowance recorded:	53,366	60,668
1-4 Family Residential | Jr. Lien & Lines of Credit
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	756	803
Current	41,105	45,001
Loans with an allowance recorded:	41,861	45,804
1-4 Family Residential | 30 - 59 Days Past Due | Senior Lien
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,481	1,172
1-4 Family Residential | 30 - 59 Days Past Due | Jr. Lien & Lines of Credit
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	230	423
1-4 Family Residential | 60 - 89 Days Past Due | Senior Lien
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	21	277
1-4 Family Residential | 60 - 89 Days Past Due | Jr. Lien & Lines of Credit
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	258	64
1-4 Family Residential | 90 Days Past Due or Nonaccrual | Senior Lien
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	994	1,068
1-4 Family Residential | 90 Days Past Due or Nonaccrual | Jr. Lien & Lines of Credit
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	268	316
Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	2	0
Current	2,903	2,901
Loans with an allowance recorded:	2,905	2,901
Consumer | 30 - 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1	0
Consumer | 60 - 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1	0
Consumer | 90 Days Past Due or Nonaccrual
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	$ 0	$ 0

Loans - Executives, Officers, D

Loans - Executives, Officers, Directors and Their Affiliates (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2015USD ($)
Loans and Leases Receivable, Related Parties [Roll Forward]
Beginning balance	$ 81
New loans, extensions, and modification	17
Repayments	0
Effect of changes in composition of related parties	(52)
Ending balance	$ 46

Loans - Narrative (Details)

Loans - Narrative (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2015USD ($)contract	Dec. 31, 2014USD ($)contract	Mar. 15, 2016USD ($)bank_branch	Jan. 27, 2016bank_branch
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled debt restructurings (TDRs)	$ 240	$ 20
Number of Loans | contract	3	2
Post-Modification Recorded Investment	$ 241	$ 5,047
Impaired loans	6,093	9,303
Performing financial instruments
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired loans	$ 100	$ 1,600
Minimum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Modifications, reduction of stated interest rate, period	6 months
Maximum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Modifications, reduction of stated interest rate, period	16 months
Subsequent event | Held for sale
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of bank branches | bank_branch			3	3
Loans to be sold			$ 11,500

Fair Value - Assets and Liabili

Fair Value - Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($)	Dec. 31, 2015	Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available-for-sale	$ 171,440,000	$ 135,371,000
Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available-for-sale	171,440,000	135,371,000
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available-for-sale	166,419,000	135,371,000
U.S. government agencies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available-for-sale	14,607,000	21,109,000
U.S. government agencies | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available-for-sale	14,607,000	21,109,000
U.S. government agencies | Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available-for-sale	14,607,000	21,109,000
States and political subdivisions
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available-for-sale	10,181,000	9,028,000
States and political subdivisions | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available-for-sale	10,181,000	9,028,000
States and political subdivisions | Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available-for-sale	10,181,000	9,028,000
U.S. government agency residential mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available-for-sale	126,029,000	99,668,000
U.S. government agency residential mortgage-backed securities | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available-for-sale	126,029,000	99,668,000
U.S. government agency residential mortgage-backed securities | Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available-for-sale	126,029,000	99,668,000
Collateralized residential mortgage obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available-for-sale	17,833,000	38,000
Collateralized residential mortgage obligations | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available-for-sale	17,833,000	38,000
Collateralized residential mortgage obligations | Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available-for-sale	12,812,000	38,000
Collateralized residential mortgage obligations | Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available-for-sale	5,021,000
Equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available-for-sale	2,790,000	2,736,000
Equity securities | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available-for-sale	2,790,000	2,736,000
Equity securities | Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available-for-sale	2,790,000	2,736,000
Collateralized debt obligations: Single issue
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available-for-sale	0	762,000
Collateralized debt obligations: Single issue | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available-for-sale		762,000
Collateralized debt obligations: Single issue | Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available-for-sale		762,000
Corporate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available-for-sale	$ 0	2,030,000
Corporate | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available-for-sale		2,030,000
Corporate | Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available-for-sale		$ 2,030,000

Fair Value - Unobservable Input

Fair Value - Unobservable Input Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	$ 0	$ 169
Total gains or losses (realized/unrealized) included in earnings
Sales	0	(169)
Ending balance	$ 0	$ 0

Fair Value - Assets Measured at

Fair Value - Assets Measured at Fair Value on a Non-Recurring Basis (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	$ 6,093	$ 9,303
Other real estate owned, net	8,401	10,256
Fair Value, Measurements, Nonrecurring | 1-4 Family Residential | Senior Lien
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	572	201
Other real estate owned, net	131	47
Fair Value, Measurements, Nonrecurring | 1-4 Family Residential | Significant Unobservable Inputs (Level 3) | Senior Lien
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	572	201
Other real estate owned, net	131	47
Fair Value, Measurements, Nonrecurring | Construction, Land & Development
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other real estate owned, net	1,140	2,823
Fair Value, Measurements, Nonrecurring | Construction, Land & Development | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other real estate owned, net	1,140	2,823
Fair Value, Measurements, Nonrecurring | Commercial RE | Non-owner occupied
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans		542
Other real estate owned, net	468	1,111
Fair Value, Measurements, Nonrecurring | Commercial RE | Owner occupied
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans		184
Other real estate owned, net		488
Fair Value, Measurements, Nonrecurring | Commercial RE | Significant Unobservable Inputs (Level 3) | Non-owner occupied
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans		542
Other real estate owned, net	$ 468	1,111
Fair Value, Measurements, Nonrecurring | Commercial RE | Significant Unobservable Inputs (Level 3) | Owner occupied
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans		184
Other real estate owned, net		$ 488

Fair Value - Level 3 Measuremen

Fair Value - Level 3 Measurements for Instruments Measured on a Non-Recurring Basis (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	$ 6,093	$ 9,303
Other real estate owned, net	8,401	10,256
Fair Value, Measurements, Nonrecurring | 1-4 Family Residential | Senior Lien
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	572	201
Other real estate owned, net	131	47
Fair Value, Measurements, Nonrecurring | Construction, Land & Development
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other real estate owned, net	1,140	2,823
Fair Value, Measurements, Nonrecurring | Commercial RE | Non-owner occupied
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans		542
Other real estate owned, net	468	1,111
Fair Value, Measurements, Nonrecurring | Commercial RE | Owner occupied
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans		184
Other real estate owned, net		488
Fair Value, Measurements, Nonrecurring | Level 3 | 1-4 Family Residential | Senior Lien
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	572	201
Other real estate owned, net	$ 131	$ 47
Fair Value, Measurements, Nonrecurring | Level 3 | 1-4 Family Residential | Senior Lien | Impaired loans | Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Weighted Average)	10.00%	10.00%
Fair Value, Measurements, Nonrecurring | Level 3 | 1-4 Family Residential | Senior Lien | Impaired loans | Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Weighted Average)	60.00%	60.00%
Fair Value, Measurements, Nonrecurring | Level 3 | 1-4 Family Residential | Senior Lien | Impaired loans | Weighted average
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Weighted Average)	17.00%	57.00%
Fair Value, Measurements, Nonrecurring | Level 3 | 1-4 Family Residential | Senior Lien | OREO property | Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Weighted Average)	6.00%	6.00%
Fair Value, Measurements, Nonrecurring | Level 3 | 1-4 Family Residential | Senior Lien | OREO property | Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Weighted Average)	55.00%	55.00%
Fair Value, Measurements, Nonrecurring | Level 3 | 1-4 Family Residential | Senior Lien | OREO property | Weighted average
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Weighted Average)	30.00%	38.00%
Fair Value, Measurements, Nonrecurring | Level 3 | Construction, Land & Development
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other real estate owned, net	$ 1,140	$ 2,823
Fair Value, Measurements, Nonrecurring | Level 3 | Construction, Land & Development | OREO property | Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Weighted Average)	5.00%	5.00%
Fair Value, Measurements, Nonrecurring | Level 3 | Construction, Land & Development | OREO property | Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Weighted Average)	70.00%	70.00%
Fair Value, Measurements, Nonrecurring | Level 3 | Construction, Land & Development | OREO property | Weighted average
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Weighted Average)	27.00%	25.00%
Fair Value, Measurements, Nonrecurring | Level 3 | Commercial RE | Non-owner occupied
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans		$ 542
Other real estate owned, net	$ 468	$ 1,111
Fair Value, Measurements, Nonrecurring | Level 3 | Commercial RE | Non-owner occupied | Impaired loans | Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Weighted Average)		10.00%
Fair Value, Measurements, Nonrecurring | Level 3 | Commercial RE | Non-owner occupied | Impaired loans | Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Weighted Average)		55.00%
Fair Value, Measurements, Nonrecurring | Level 3 | Commercial RE | Non-owner occupied | Impaired loans | Weighted average
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Weighted Average)		11.00%
Fair Value, Measurements, Nonrecurring | Level 3 | Commercial RE | Non-owner occupied | OREO property | Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Weighted Average)	5.00%	5.00%
Fair Value, Measurements, Nonrecurring | Level 3 | Commercial RE | Non-owner occupied | OREO property | Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Weighted Average)	50.00%	50.00%
Fair Value, Measurements, Nonrecurring | Level 3 | Commercial RE | Non-owner occupied | OREO property | Weighted average
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Weighted Average)	16.00%	20.00%
Fair Value, Measurements, Nonrecurring | Level 3 | Commercial RE | Owner occupied
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans		$ 184
Other real estate owned, net		$ 488
Fair Value, Measurements, Nonrecurring | Level 3 | Commercial RE | Owner occupied | Impaired loans | Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Weighted Average)		10.00%
Fair Value, Measurements, Nonrecurring | Level 3 | Commercial RE | Owner occupied | Impaired loans | Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Weighted Average)		55.00%
Fair Value, Measurements, Nonrecurring | Level 3 | Commercial RE | Owner occupied | Impaired loans | Weighted average
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Weighted Average)		19.00%
Fair Value, Measurements, Nonrecurring | Level 3 | Commercial RE | Owner occupied | OREO property | Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Weighted Average)		15.00%
Fair Value, Measurements, Nonrecurring | Level 3 | Commercial RE | Owner occupied | OREO property | Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Weighted Average)		55.00%
Fair Value, Measurements, Nonrecurring | Level 3 | Commercial RE | Owner occupied | OREO property | Weighted average
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Weighted Average)		21.00%

Fair Value - Financial Instrume

Fair Value - Financial Instruments (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Carrying Value
Financial assets
Cash and cash equivalents	$ 27,655	$ 49,167
Securities	171,440	135,371
Restricted securities	9,116	6,102
Loans held for sale	735	364
Net loans	624,956	545,219
Accrued interest receivable	3,012	2,417
Financial liabilities
Deposits	718,504	698,824
Federal funds purchased and securities sold under agreements to repurchase	18,730	26,691
Federal Home Loan Bank advances	76,000	20,000
Notes payable		10,250
Subordinated debentures	20,620	20,620
Series B mandatorily redeemable preferred stock	268	268
Accrued interest payable	235	5,142
Fair value measurements
Financial assets
Cash and cash equivalents	27,655	49,167
Securities	171,440	135,371
Loans held for sale	760	379
Net loans	629,017	553,447
Accrued interest receivable	3,012	2,417
Financial liabilities
Deposits	718,689	699,471
Federal funds purchased and securities sold under agreements to repurchase	18,730	26,691
Federal Home Loan Bank advances	76,271	20,546
Notes payable		10,264
Subordinated debentures	13,933	13,851
Series B mandatorily redeemable preferred stock	273	268
Accrued interest payable	235	5,142
Fair value measurements | Level 1
Financial assets
Cash and cash equivalents	27,655	44,167
Securities	0	0
Restricted securities	0	0
Loans held for sale	0	0
Net loans	0	0
Accrued interest receivable	0	0
Financial liabilities
Deposits	0	0
Federal funds purchased and securities sold under agreements to repurchase	0	0
Federal Home Loan Bank advances	0	0
Notes payable		0
Subordinated debentures	0	0
Series B mandatorily redeemable preferred stock	0	0
Accrued interest payable	0	0
Fair value measurements | Level 2
Financial assets
Cash and cash equivalents	0	5,000
Securities	166,419	135,371
Restricted securities	0	0
Loans held for sale	760	379
Net loans	0	0
Accrued interest receivable	402	336
Financial liabilities
Deposits	718,689	699,471
Federal funds purchased and securities sold under agreements to repurchase	18,730	26,691
Federal Home Loan Bank advances	76,271	20,546
Notes payable		0
Subordinated debentures	0	0
Series B mandatorily redeemable preferred stock	273	268
Accrued interest payable	169	369
Fair value measurements | Level 3
Financial assets
Cash and cash equivalents	0	0
Securities	5,021	0
Restricted securities	0	0
Loans held for sale	0	0
Net loans	629,017	553,447
Accrued interest receivable	2,610	2,081
Financial liabilities
Deposits	0	0
Federal funds purchased and securities sold under agreements to repurchase	0	0
Federal Home Loan Bank advances	0	0
Notes payable		10,264
Subordinated debentures	13,933	13,851
Series B mandatorily redeemable preferred stock	0	0
Accrued interest payable	$ 66	$ 4,773

Fair Value - Narrative (Details

Fair Value - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available-for-sale	$ 171,440,000	$ 135,371,000
Liabilities measured at fair value on a recurring basis	0
Impaired loans	6,093,000	9,303,000
Specific loan loss allocation	1,594,000	1,555,000
Provision	375,000	7,202,000
Other real estate owned, net	8,401,000	10,256,000
Fair value measurements
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	27,655,000	49,167,000
Fair value measurements | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	0	0
Fair value measurements | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	27,655,000	44,167,000
Impaired financing receivable, recent appraisal
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	600,000	900,000
Specific loan loss allocation	300,000	500,000
Provision	100,000	500,000
Other real estate, recent appraisal
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other real estate owned, net	1,700,000	4,500,000
OREO, outstanding balance of related loan	2,900,000	6,000,000
OREO, valuation allowance	1,200,000
Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available-for-sale	171,440,000	135,371,000
Collateralized debt obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available-for-sale	0	762,000
Collateralized debt obligations | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available-for-sale		762,000
Collateralized residential mortgage obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available-for-sale	17,833,000	38,000
Collateralized residential mortgage obligations | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available-for-sale	17,833,000	$ 38,000
Collateralized residential mortgage obligations | Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available-for-sale	$ 5,021,000

Loan Sales and Servicing - Loan

Loan Sales and Servicing - Loans Held for Sale (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Transfers and Servicing [Abstract]
Loans held for sale	$ 735	$ 364
Less: Allowance to adjust to lower of cost or fair value	0	0
Loans held for sale, net	$ 735	$ 364

Loan Sales and Servicing - Mort

Loan Sales and Servicing - Mortgage Loans Serviced for Others (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Financing Receivable, Recorded Investment [Line Items]
Mortgage loans serviced for others	$ 283,921	$ 302,537
Federal Home Loan Mortgage Corporation
Financing Receivable, Recorded Investment [Line Items]
Mortgage loans serviced for others	17,614	21,814
Federal National Mortgage Association
Financing Receivable, Recorded Investment [Line Items]
Mortgage loans serviced for others	$ 266,307	$ 280,723

Loan Sales and Servicing - Mo67

Loan Sales and Servicing - Mortgage Servicing Rights (Details) - Mortgages - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Servicing Asset at Amortized Cost, Balance [Roll Forward]
Balance at beginning of year	$ 2,240	$ 2,301
Originated mortgage servicing rights	230	232
Amortization	(341)	(293)
Balance at end of year	$ 2,129	$ 2,240

Loan Sales and Servicing - Esti

Loan Sales and Servicing - Estimated Amortization Expense (Details) - Servicing contracts $ in Thousands	Dec. 31, 2015USD ($)
Acquired Finite-Lived Intangible Assets [Line Items]
2,016	$ 400
2,017	270
2,018	240
2,019	230
2,020	245
Finite-lived intangible assets, net	$ 1,385

Loan Sales and Servicing - Narr

Loan Sales and Servicing - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Servicing Assets at Fair Value [Line Items]
Custodial escrow balances	$ 2,360	$ 2,380
Mortgages
Servicing Assets at Fair Value [Line Items]
Fair value of capitalized mortgage servicing rights	$ 2,200	$ 2,300
Mortgages | Minimum
Servicing Assets at Fair Value [Line Items]
Discount rates	10.50%	11.00%
Prepayment speeds	14.80%	17.03%
Mortgages | Maximum
Servicing Assets at Fair Value [Line Items]
Discount rates	16.50%	17.00%
Prepayment speeds	15.72%	18.09%

Premises and Equipment (Details

Premises and Equipment (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2015USD ($)	Dec. 31, 2014USD ($)	Mar. 15, 2016bank_branch	Jan. 27, 2016bank_branch
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	$ 35,705	$ 42,424
Less accumulated depreciation	18,853	19,798
Premises and equipment, net	16,852	22,626
Depreciation	1,199	1,385
Premises and equipment held for sale	5,100
Held for sale | Subsequent event
Property, Plant and Equipment [Line Items]
Number of bank branches | bank_branch			3	3
Land
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	8,315	9,426
Buildings
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	14,118	19,464
Furniture and equipment
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	13,188	13,133
Work in Process
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	$ 84	$ 401

Deposits (Details)

Deposits (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Banking and Thrift [Abstract]
Time certificate of deposits in denominations of $250,000 or more	$ 35,200	$ 41,400
Brokered deposits	21,300	25,200
Deposits from principal officers, directors and their affiliates	800	$ 1,200
Maturities of Time Deposits [Abstract]
2,016	132,611
2,017	42,092
2,018	6,080
2,019	4,063
2,020	2,485
Time deposits total	$ 187,331

Securities Sold Under Agreeme72

Securities Sold Under Agreements To Repurchase (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Banking and Thrift [Abstract]
Securities sold under agreements to repurchase, carrying value	$ 18,700	$ 26,700
U.S. government agency residential mortgage-backed securities
Offsetting Liabilities [Line Items]
Securities sold under agreements to repurchase, collateral	$ 25,300
Securities sold under agreements to repurchase, minimum percentage of collateral pledged above the gross outstanding balance	15.00%
Securities sold under agreements to repurchase
Offsetting Liabilities [Line Items]
Average daily balance during the period	$ 18,144	$ 18,560
Average interest rate during the period	0.27%	0.29%
Maximum month end balance during the period	$ 20,832	$ 26,691
Weighted average interest rate at period-end	0.26%	0.28%

Borrowed Funds and Debt Oblig73

Borrowed Funds and Debt Obligations - Scheduled Maturities of Federal Home Loan Bank Advances (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Average Interest Rate
2,016	0.70%	1.66%
2,017	1.14%	0.00%
2,018	3.64%	3.64%
Average Interest Rate	0.96%	2.16%
Amount
2,016	$ 60,000	$ 15,000
2,017	11,000	0
2,018	5,000	5,000
Advances from Federal Home Loan Banks	$ 76,000	$ 20,000

Borrowed Funds and Debt Oblig74

Borrowed Funds and Debt Obligations - Notes Payable (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2014USD ($)
Debt Instrument [Line Items]
Notes payable	$ 10,250
Secured debt
Debt Instrument [Line Items]
Notes payable	10,300
Subordinated debt | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Notes payable	$ 10,000
Interest due, rate	2.95%
Interest rate at period end	3.19%
Equity securities | Secured debt | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Notes payable	$ 250
Interest due, rate	2.95%
100% of Centrue Bank Stock pledged	100.00%
Equity securities | Secured debt | Floor
Debt Instrument [Line Items]
Interest due, rate	6.50%

Borrowed Funds and Debt Oblig75

Borrowed Funds and Debt Obligations - Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Advances from the Federal Home Loan Bank
Maximum month-end balance during the period	$ 110,000	$ 35,000
Average balance during the period	$ 64,370	$ 26,466
Weighted average interest rate for the period	0.82%	1.70%
Weighted average interest rate at period end	0.96%	2.16%
Notes Payable
Maximum month-end balance during the period	$ 10,250	$ 10,250
Average balance during the period	$ 2,499	$ 10,250
Weighted average interest rate for the period	3.36%	3.31%
Weighted average interest rate at period end	0.00%	3.27%

Borrowed Funds and Debt Oblig76

Borrowed Funds and Debt Obligations - Narrative (Details)	12 Months Ended
	Dec. 31, 2015USD ($)note	Dec. 31, 2014USD ($)	Mar. 15, 2016USD ($)
Debt Instrument [Line Items]
Collateral pledged to Federal Home Loan Bank	$ 167,700,000
Interest rate of Federal Home Loan Bank advances, minimum	0.21%	1.66%
Interest rate of Federal Home Loan Bank advances, maximum	3.64%	3.64%
FHLB advances with maturities next year	$ 60,000,000	$ 15,000,000
Gain on extinguishment of debt	$ 1,750,000	0
Credit facilities		10,250,000
Number of credit facilities | note	2
Secured debt
Debt Instrument [Line Items]
Credit facilities		10,300,000
London Interbank Offered Rate (LIBOR) | Subordinated debt
Debt Instrument [Line Items]
Credit facilities		10,000,000
Equity securities | London Interbank Offered Rate (LIBOR) | Secured debt
Debt Instrument [Line Items]
Credit facilities		$ 250,000
Collateralized mortgage backed securities
Debt Instrument [Line Items]
Collateral pledged to Federal Home Loan Bank	$ 291,600,000
Subsequent event
Debt Instrument [Line Items]
FHLB advances that matured and were renewed			$ 40,000,000

Subordinated Debentures (Detail

Subordinated Debentures (Details)	12 Months Ended		37 Months Ended	61 Months Ended	63 Months Ended
	Dec. 31, 2015USD ($)	Dec. 31, 2014USD ($)	Apr. 30, 2007USD ($)debt	Jul. 31, 2012	Sep. 30, 2014	Apr. 30, 2004USD ($)
Financial Instruments Subject to Mandatory Redemption by Settlement Terms [Line Items]
Trust preferred issuance, amount	$ 268,000	$ 268,000
Subordinated debentures	20,620,000	$ 20,620,000
Centrue Statutory Trust II and Centrue Statutory Trust III | Other assets
Financial Instruments Subject to Mandatory Redemption by Settlement Terms [Line Items]
Investments	600,000
London Interbank Offered Rate (LIBOR) | Subordinated debt
Financial Instruments Subject to Mandatory Redemption by Settlement Terms [Line Items]
Distributions, cumulative and payable quarterly at a variable rate		2.95%
Centrue Statutory Trust III | Subordinated debt
Financial Instruments Subject to Mandatory Redemption by Settlement Terms [Line Items]
Fixed rate for subordinated debentures				5 years
Subordinated debentures | Centrue Statutory Trust II and Centrue Statutory Trust III
Financial Instruments Subject to Mandatory Redemption by Settlement Terms [Line Items]
Subordinated debentures	20,600,000
Trust Preferred Stock
Financial Instruments Subject to Mandatory Redemption by Settlement Terms [Line Items]
Interest expense on trust preferred securities	500,000	$ 600,000
Permitted default period for interest payments					5 years
Accrued interest payable	100,000	$ 4,800,000
Centrue Statutory Trust II and Centrue Statutory Trust III
Financial Instruments Subject to Mandatory Redemption by Settlement Terms [Line Items]
Trust preferred issuance, amount			$ 10,000,000
Stated liquidation amount per preferred security	$ 1,000
Centrue Statutory Trust II and Centrue Statutory Trust III | Subordinated debentures
Financial Instruments Subject to Mandatory Redemption by Settlement Terms [Line Items]
Number of trust preferred issuances (in debt) | debt			2
Trust preferred issuance, amount						$ 10,000,000
Centrue Statutory Trust II | Trust Preferred Stock
Financial Instruments Subject to Mandatory Redemption by Settlement Terms [Line Items]
LIBOR rate	0.52575%
Effective interest rate	3.18%	2.89%
Centrue Statutory Trust II | Trust Preferred Stock | London Interbank Offered Rate (LIBOR)
Financial Instruments Subject to Mandatory Redemption by Settlement Terms [Line Items]
Distributions, cumulative and payable quarterly at a variable rate	2.65%
Centrue Statutory Trust III | Trust Preferred Stock
Financial Instruments Subject to Mandatory Redemption by Settlement Terms [Line Items]
LIBOR rate	0.3255%
Effective interest rate	1.98%	1.89%
Centrue Statutory Trust III | Trust Preferred Stock | London Interbank Offered Rate (LIBOR)
Financial Instruments Subject to Mandatory Redemption by Settlement Terms [Line Items]
Distributions, cumulative and payable quarterly at a variable rate	1.65%

Income Taxes - Schedule of Expe

Income Taxes - Schedule of Expense (Benefit) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Federal
Current	$ 126	$ 0
Deferred	(126)	(1,685)
Federal income tax expense (benefit)	0	(1,685)
State
Current	0	0
Deferred	0	(371)
State income tax expense (benefit)	0	(371)
Change in valuation allowance	(37,484)	2,056
Income tax expense (benefit)	$ (37,484)	$ 0

Income Taxes - Reconciliation (

Income Taxes - Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Statutory federal rate	34.00%
Expected income taxes	$ 1,740	$ (1,534)
Income tax effect of
Change in valuation allowance	(39,759)	2,056
Interest earned on tax-free investments and loans	(67)	(91)
Nondeductible interest expense incurred to carry tax-free investments and loans	1	2
State income taxes, net of federal tax benefit	191	(265)
Earnings on Bank-owned life insurance	(304)	(302)
Nondeductible meals and health club dues	33	23
Section 382 limitations	370	0
Impact of state apportionment change	193	0
Other	118	111
Income tax expense (benefit)	$ (37,484)	$ 0

Income Taxes - Components of De

Income Taxes - Components of Deferred Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Deferred tax assets
Allowance for loan losses	$ 3,342	$ 3,107
Deferred compensation, other	74	104
Stock based expense	87	130
Net operating loss carryforwards	34,180	36,955
Securities available-for-sale	405	0
Deferred tax credits	823	697
OREO valuation allowance	1,059	1,080
Donation carryforward	5	232
Capital loss carryforward	4	4
Other	246	45
Total deferred tax assets	40,225	42,354
Deferred tax liabilities
Depreciation	(58)	(41)
Adjustments arising from acquisitions	(146)	(502)
Mortgage servicing rights	(828)	(872)
Federal Home Loan Bank dividend received in stock	0	(166)
Federal Home Loan Bank dividend received in stock	(450)	(451)
Deferred loan fees & costs	(399)	(373)
Prepaid expenses	(164)	(190)
Total deferred tax liabilities	(2,045)	(2,595)
Valuation allowance	0	(39,759)
Net deferred tax assets	$ 38,180	$ 0

Income Taxes - Narrative (Detai

Income Taxes - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2008	Dec. 31, 2007
Operating Loss Carryforwards [Line Items]
Reversed valuation allowance on net deferred tax assets	$ (38,200)	$ 39,759	$ (2,136)
Rate of use of the operating loss carryforward	160	160
Deferred tax credits, Alternative Minimum Tax	800	800		$ 800	$ 800
Donation carryforward	5	5	232
Net operating loss carryforwards	600	600
Tax year 2009
Operating Loss Carryforwards [Line Items]
Donation carryforward			400
Federal | Tax year 2010
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	24,400	24,400
Federal | Tax year 2011
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	20,100	20,100
Federal | Tax year 2012
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	6,300	6,300
Federal | Tax year 2013
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	29,900	29,900
Federal | Tax year 2014
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	9,200	$ 9,200
State
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforward, Number of Years		12 years
State | Tax year 2010
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	25,500	$ 25,500
State | Tax year 2011
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	14,700	14,700
State | Tax year 2012
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	4,600	4,600
State | Tax year 2013
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	22,900	22,900
State | Tax year 2014
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	6,700	6,700
State | Tax year 2009
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	11,100	11,100
Illinois Community Bancorp, Inc. | Federal
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	$ 1,400	$ 1,400	$ 3,600

Benefit Plans (Details)

Benefit Plans (Details)	12 Months Ended
	Dec. 31, 2015USD ($)	Dec. 31, 2014USD ($)	Mar. 31, 2015USD ($)individual
Defined Contribution Plan Disclosure [Line Items]
Employer matching contribution, percent of employees' eligible wages	2.00%	1.00%
Employer contribution amount	$ 300,000	$ 100,000
Accrued liability for deferral plans	$ 30,000	$ 80,000
Executives
Defined Contribution Plan Disclosure [Line Items]
Number of executives who had a full balance payout | individual			3
Deferred compensation, aggregate payout			$ 38,010
Directors
Defined Contribution Plan Disclosure [Line Items]
Number of directors who had a partial balance payout | individual			2
Deferred compensation, aggregate payout			$ 16,850

Share Based Compensation - Narr

Share Based Compensation - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended
	Nov. 30, 2015	Apr. 30, 2003	Dec. 31, 2015	May. 31, 2015
Restricted stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (in shares)			40,443
Number of shares awarded (in shares)	40,443
Aggregate grant date fair value of treasury shares	$ 0.7
Fair value on grant date	$ 17.75
2003 Option Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares of common stock that were reserved and available for issuance (in shares)		19,000
2003 Option Plan | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise period of granted options		7 years
2003 Option Plan | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise period of granted options		10 years
2015 Stock Compensation Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (in shares)				430,000

Share Based Compensation - Summ

Share Based Compensation - Summary of Activity (Details)	12 Months Ended
	Dec. 31, 2015$ / sharesshares
Shares
Outstanding at beginning of the period (in shares) | shares	6,063
Granted (in shares) | shares	0
Exercised (in shares) | shares	0
Forfeited (in shares) | shares	(2,907)
Outstanding at end of period (in shares) | shares	3,156
Vested or expected to vest (in shares) | shares	3,156
Options exercisable at period end (in shares) | shares	3,156
Weighted-Average Exercise Price
Outstanding at the beginning of the period (in dollars per share) | $ / shares	$ 447.19
Granted (in dollars per share) | $ / shares	0
Exercised (in dollars per share) | $ / shares	0
Forfeited (in dollars per share) | $ / shares	564.96
Outstanding at end of period (in dollars per share) | $ / shares	338.72
Vested or expected to vest (in dollars per share) | $ / shares	338.72
Options exercisable at period end (in dollars per share) | $ / shares	$ 338.72
Weighted-Average Remaining Contractual Life
Outstanding at end of period	4 months 24 days
Vested or expected to vest	4 months 24 days
Options exercisable at period end	4 months 24 days

Share Based Compensation - Rang

Share Based Compensation - Range of Exercise Prices (Details) - $ / shares	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Outstanding
Number (in shares)	3,156	6,063
Weighted Average Remaining Contractual Life	4 months 24 days	1 year
Exercisable
Number (in shares)	3,156	6,063
Weighted Average Exercise Price (in dollars per share)	$ 338.72	$ 447.19
$157.20 - $390.00
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices, Lower Range Limit (in dollars per share)	157.20	157.20
Range of Exercise Prices, Upper Range Limit (in dollars per share)	$ 390	$ 390
Outstanding
Number (in shares)	2,160	2,160
Weighted Average Remaining Contractual Life	2 months 24 days	1 year 2 months 12 days
Exercisable
Number (in shares)	2,160	2,160
Weighted Average Exercise Price (in dollars per share)	$ 228.33	$ 228.33
416.40 - 558.90
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices, Lower Range Limit (in dollars per share)	416.40	416.40
Range of Exercise Prices, Upper Range Limit (in dollars per share)	$ 558.90	$ 558.90
Outstanding
Number (in shares)	0	2,077
Weighted Average Remaining Contractual Life	0 years	2 months 12 days
Exercisable
Number (in shares)	0	2,077
Weighted Average Exercise Price (in dollars per share)	$ 0	$ 543.29
570.90 - 699.30
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices, Lower Range Limit (in dollars per share)	570.90	570.90
Range of Exercise Prices, Upper Range Limit (in dollars per share)	$ 699.30	$ 699.30
Outstanding
Number (in shares)	996	1,826
Weighted Average Remaining Contractual Life	10 months 18 days	1 year 7 months 6 days
Exercisable
Number (in shares)	996	1,826
Weighted Average Exercise Price (in dollars per share)	$ 578.10	$ 596.78

Regulatory Matters (Details)

Regulatory Matters (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2015USD ($)election	Dec. 31, 2014USD ($)
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Available election to opt out, accepted | election	1
Centrue Financial
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Total capital (to risk-weighted assets), actual amount	$ 118,359	$ 57,829
Total capital (to risk-weighted assets), actual ratio	15.60%	9.60%
Total capital (to risk-weighted assets), to be adequately capitalized, amount	$ 60,525	$ 47,991
Total capital (to risk-weighted assets), to be adequately capitalized, ratio	8.00%	8.00%
Common equity tier I (to risk-weighted assets), actual amount	$ 107,678
Common equity tier I (to risk-weighted assets), actual ratio	14.20%
Common equity tier I (to risk-weighted assets), to be adequately capitalized, amount	$ 34,045
Common equity tier I (to risk-weighted assets), to be adequately capitalized, ratio	4.50%
Tier I capital (to risk-weighted assets), actual amount	$ 109,768	$ 41,118
Tier I capital (to risk-weighted assets), actual ratio	14.50%	6.90%
Tier I capital (to risk-weighted assets), to be adequately capitalized, amount	$ 45,394	$ 23,995
Tier I capital (to risk-weighted assets), to be adequately capitalized, ratio	6.00%	4.00%
Tier I leverage ratio (to average assets), actual amount	$ 109,768	$ 41,118
Tier I leverage ratio (to average assets), actual ratio	12.10%	4.90%
Tier I leverage ratio (to average assets), to be adequately capitalized, amount	$ 40,819	$ 33,345
Tier I leverage ratio (to average assets), to be adequately capitalized, ratio	4.50%	4.00%
Centrue Bank
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Total capital (to risk-weighted assets), actual amount	$ 117,807	$ 70,717
Total capital (to risk-weighted assets), actual ratio	15.60%	11.80%
Total capital (to risk-weighted assets), to be adequately capitalized, amount	$ 60,463	$ 47,792
Total capital (to risk-weighted assets), to be adequately capitalized, ratio	8.00%	8.00%
Total capital (to risk-weighted assets), to be well capitalized under prompt corrective action provisions, amount	$ 75,579	$ 59,740
Total capital (to risk-weighted assets), to be well capitalized under prompt corrective action provisions, ratio	10.00%	10.00%
Common equity tier I (to risk-weighted assets), actual amount	$ 109,216
Common equity tier I (to risk-weighted assets), actual ratio	14.50%
Common equity tier I (to risk-weighted assets), to be adequately capitalized, amount	$ 34,011
Common equity tier I (to risk-weighted assets), to be adequately capitalized, ratio	4.50%
Common equity tier I (to risk-weighted assets), to be well capitalized under prompt corrective action provisions, amount	$ 49,126
Common equity tier I (to risk-weighted assets), to be well capitalized under prompt corrective action provisions, ratio	6.50%
Tier I capital (to risk-weighted assets), actual amount	$ 109,216	$ 63,243
Tier I capital (to risk-weighted assets), actual ratio	14.50%	10.60%
Tier I capital (to risk-weighted assets), to be adequately capitalized, amount	$ 45,347	$ 23,896
Tier I capital (to risk-weighted assets), to be adequately capitalized, ratio	6.00%	4.00%
Tier I capital (to risk-weighted assets), to be well capitalized under prompt corrective action provisions, amount	$ 60,463	$ 35,844
Tier I capital (to risk-weighted assets), to be well capitalized under prompt corrective action provisions, ratio	8.00%	6.00%
Tier I leverage ratio (to average assets), actual amount	$ 109,216	$ 63,243
Tier I leverage ratio (to average assets), actual ratio	12.00%	7.60%
Tier I leverage ratio (to average assets), to be adequately capitalized, amount	$ 41,068	$ 33,231
Tier I leverage ratio (to average assets), to be adequately capitalized, ratio	4.50%	4.00%
Tier I leverage ratio (to average assets), to be well capitalized under prompt corrective action provisions, amount	$ 45,631	$ 41,539
Tier I leverage ratio (to average assets), to be well capitalized under prompt corrective action provisions, ratio	5.00%	5.00%

Commitments, Contingencies, a87

Commitments, Contingencies, and Credit Risk - Receivables (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract]
Standby Letters of Credit	$ 1,970	$ 2,025
Variable Rate Commitments	120,173	87,818
Fixed Rate Commitments	29,681	25,424
Total Commitments	$ 151,824	$ 115,267
Range of Rates on Fixed Rate Commitments, Minimum	2.60%	2.00%
Range of Rates on Fixed Rate Commitments, Maximum	18.00%	18.00%

Commitments, Contingencies, a88

Commitments, Contingencies, and Credit Risk - Operating Leases (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract]
Rent expense	$ 310	$ 280
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
2,016	282
2,017	230
2,018	182
2,019	98
2,020	0
Total	$ 792

Parent Company Only Condensed89

Parent Company Only Condensed Financial Information - Balance Sheets (Details) - USD ($) $ in Thousands	Dec. 31, 2015		Dec. 31, 2014	Dec. 31, 2013
ASSETS
Cash and cash equivalents	$ 27,655		$ 49,167	$ 70,748
Securities available-for-sale	171,440		135,371
Other assets	9,098		9,719
Total assets	961,218		817,089
LIABILITIES AND STOCKHOLDERS' EQUITY
Notes payable	0		10,250
Preferred stock	268		268
Other liabilities	5,815		10,108
Total liabilities	839,937		786,761
Total stockholders' equity	121,281	[1]	30,328	35,871
Total liabilities and stockholders' equity	961,218		817,089
Parent Company
ASSETS
Cash and cash equivalents	741		764	$ 2,363
Securities available-for-sale	27		27
Investment in subsidiary	135,576		64,008
Other assets	6,075		1,804
Total assets	142,419		66,603
LIABILITIES AND STOCKHOLDERS' EQUITY
Notes payable	0		10,250
Other liabilities	250		5,137
Total liabilities	21,138		36,275
Total stockholders' equity	121,281		30,328
Total liabilities and stockholders' equity	142,419		66,603
Parent Company | Mandatory redeemable preferred stock
LIABILITIES AND STOCKHOLDERS' EQUITY
Preferred stock	268		268
Parent Company | Trust Preferred Stock
LIABILITIES AND STOCKHOLDERS' EQUITY
Preferred stock	$ 20,620		$ 20,620
[1]	Share and per share amounts have been adjusted to reflect the Company's 1:30 reverse stock split effective May 29, 2015.

Parent Company Only Condensed90

Parent Company Only Condensed Financial Information - Income (Loss) Statements (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014
Condensed Income Statements, Captions [Line Items]
Interest income	$ 7,678	$ 7,336	$ 7,007	$ 6,734	$ 6,747	$ 6,947	$ 6,928	$ 6,973	$ 28,755	$ 27,595
Other income									12,428	12,810
Interest expense									2,451	3,500
Other expense									33,239	34,214
Income tax benefit									(37,484)	0
Net income (loss)	$ 38,594	$ 1,088	$ 1,053	$ 1,867	$ (6,016)	$ 573	$ 374	$ 558	42,602	(4,511)
Preferred stock dividends									1,484	3,569
Discount on redemption of preferred stock									(13,668)	0
Net income (loss) for common stockholders									54,786	(8,080)
Parent Company
Condensed Income Statements, Captions [Line Items]
Dividends from subsidiary									0	0
Interest income									16	18
Other income									1,754	753
Interest expense									645	955
Other expense									1,055	437
Income tax benefit									(6,068)	0
Equity in undistributed earnings of subsidiaries									36,464	(3,890)
Net income (loss)									42,602	(4,511)
Preferred stock dividends									1,484	3,569
Discount on redemption of preferred stock									(13,668)	0
Net income (loss) for common stockholders									$ 54,786	$ (8,080)

Parent Company Only Condensed91

Parent Company Only Condensed Financial Information - Statements of Cash Flows (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014
Cash flows from operating activities
Net income (loss)	$ 38,594	$ 1,088	$ 1,053	$ 1,867	$ (6,016)	$ 573	$ 374	$ 558	$ 42,602	$ (4,511)
Adjustments to reconcile net income (loss) to net cash provided by operating activities
Share based compensation									461	0
Gain on extinguishment of debt									(1,750)	0
(Increase) decrease in other assets									338	(1,108)
Increase (decrease) in other liabilities									(3,624)	1,138
Net cash (used in) provided by operating activities									6,466	6,336
Cash flows from investing activities
Net cash (used in) provided by investing activities									(135,967)	33,186
Cash flows from financing activities
Repayment of Notes Payable									(8,500)	0
Purchase of Tarp Warrants									0	(2)
Net proceeds from the issuance of Common Stock									68,248	0
Purchase of Treasury Stock									0	(1,255)
Redemption of Series A Convertible Preferred Stock									0	(500)
Redemption of Series C Cumulative Perpetual Preferred Stock									(19,000)	0
Issuance of Series D Non-Cumulative Perpetual Preferred Stock									0	2,636
Dividends paid on preferred stock									(478)	(881)
Net cash provided by (used in) financing activities									107,989	(61,103)
Cash and cash equivalents									(21,512)	(21,581)
Beginning of period				49,167				70,748	49,167	70,748
End of period	27,655				49,167				27,655	49,167
Parent Company
Cash flows from operating activities
Net income (loss)									42,602	(4,511)
Adjustments to reconcile net income (loss) to net cash provided by operating activities
Undistributed (earnings) loss of subsidiary									(36,464)	3,890
Share based compensation									461	0
Gain on extinguishment of debt									(1,750)	0
(Increase) decrease in other assets									(4,271)	(1,675)
Increase (decrease) in other liabilities									(4,871)	699
Net cash (used in) provided by operating activities									(4,293)	(1,597)
Cash flows from investing activities
Capital infusion to subsidiary									(36,000)	0
Net cash (used in) provided by investing activities									(36,000)	0
Cash flows from financing activities
Repayment of Notes Payable									(8,500)	0
Purchase of Tarp Warrants									0	(2)
Net proceeds from the issuance of Common Stock									68,248	0
Purchase of Treasury Stock									0	(1,255)
Redemption of Series A Convertible Preferred Stock									0	(500)
Redemption of Series C Cumulative Perpetual Preferred Stock									(19,000)	0
Issuance of Series D Non-Cumulative Perpetual Preferred Stock									0	2,636
Dividends paid on preferred stock									(478)	(881)
Net cash provided by (used in) financing activities									40,270	(2)
Cash and cash equivalents									(23)	(1,599)
Beginning of period				$ 764				$ 2,363	764	2,363
End of period	$ 741				$ 764				$ 741	$ 764

Earnings Per Share (Details)

Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015		Dec. 31, 2014
Earnings Per Share [Abstract]
Anti-dilutive options excluded from computation of diluted earnings per share (in shares)									3,156		6,063
Basic Earnings (Loss) Per Common Share
Net income (loss)	$ 38,594	$ 1,088	$ 1,053	$ 1,867	$ (6,016)	$ 573	$ 374	$ 558	$ 42,602		$ (4,511)
Preferred stock dividends									(1,484)		(3,569)
Discount on redemption of preferred stock									13,668		0
Net income (loss) for common stockholders									$ 54,786		$ (8,080)
Weighted average common shares outstanding (in shares)									4,945,073		180,320
Basic earnings (loss) per common share (in dollars per share)	$ 5.92	$ 0.11	$ 0.16	$ 65.60	$ (46.32)	$ (1.41)	$ (3.06)	$ (1.12)	$ 11.08	[1]	$ (44.81)	[1]
Diluted Earnings Per Common Share
Weighted average common shares outstanding (in shares)									4,945,073		180,320
Add: dilutive effect of assumed exercised stock options (in shares)									0		0
Add: dilutive effect of assumed exercised common stock warrants (in shares)									0		0
Weighted average common and dilutive potential shares outstanding (in shares)									4,945,073		180,320
Diluted earnings (loss) per common share (in dollars per share)	$ 5.92	$ 0.11	$ 0.16	$ 65.60	$ (46.32)	$ (1.41)	$ (3.06)	$ (1.12)	$ 11.08	[1]	$ (44.81)	[1]
[1]	Share and per share amounts have been adjusted to reflect the Company's 1:30 reverse stock split effective May 29, 2015.

Quarterly Financial Data (Una93

Quarterly Financial Data (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015		Dec. 31, 2014
Quarterly Financial Information Disclosure [Abstract]
Interest Income	$ 7,678	$ 7,336	$ 7,007	$ 6,734	$ 6,747	$ 6,947	$ 6,928	$ 6,973	$ 28,755		$ 27,595
Net Interest Income	7,081	6,737	6,446	6,040	5,976	6,076	6,017	6,026	26,304		24,095
Net Income	$ 38,594	$ 1,088	$ 1,053	$ 1,867	$ (6,016)	$ 573	$ 374	$ 558	$ 42,602		$ (4,511)
Basic earnings (loss) per common share (in dollars per share)	$ 5.92	$ 0.11	$ 0.16	$ 65.60	$ (46.32)	$ (1.41)	$ (3.06)	$ (1.12)	$ 11.08	[1]	$ (44.81)	[1]
Diluted earnings (loss) per common share (in dollars per share)	$ 5.92	$ 0.11	$ 0.16	$ 65.60	$ (46.32)	$ (1.41)	$ (3.06)	$ (1.12)	$ 11.08	[1]	$ (44.81)	[1]
[1]	Share and per share amounts have been adjusted to reflect the Company's 1:30 reverse stock split effective May 29, 2015.

Subsequent Events (Details)

Subsequent Events (Details) - Held for sale $ in Millions	Mar. 15, 2016bank_branch	Jan. 27, 2016bank_branchcontract	Dec. 31, 2015USD ($)
Subsequent Event [Line Items]
Assumption of branch deposits and repurchase agreements			$ 59.3
Purchase of selected loans			11.5
Purchase of branch premises and equipment			$ 5.1
Subsequent event
Subsequent Event [Line Items]
Number of Branch Purchase and Assumption Agreements | contract		2
Number of bank branches | bank_branch	3	3