BankFinancial (BFIN) 10-K 5 Mar 20 2019 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2019	Mar. 03, 2020	Jun. 30, 2019
Document and Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2019
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2019
Entity Registrant Name	BankFinancial CORP
Entity Central Index Key	0001303942
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Emerging Growth Company	false
Entity Small Business	true
Entity Common Stock, Shares Outstanding		15,206,787
Entity Well-known Seasoned Issuer	No
Entity Public Float			$ 200,555,000
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Shell Company	false

Consolidated Statements of Fina

Consolidated Statements of Financial Condition - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Assets
Cash and due from other financial institutions	$ 9,785	$ 13,805
Interest-bearing deposits in other financial institutions	180,540	84,399
Cash and cash equivalents	190,325	98,204
Securities, at fair value	60,193	88,179
Loans receivable, net of allowance for loan losses	1,168,008	1,323,793
Other real estate owned, net	186	1,226
Stock in Federal Home Loan Bank, at cost	7,490	8,026
Premises and equipment, net	24,346	25,205
Accrued interest receivable	4,563	4,952
Bank owned life insurance	18,945	18,809
Deferred Tax Assets, Net	3,873	6,235
Other assets	10,086	10,696
Total assets	1,488,015	1,585,325
Deposits
Noninterest-bearing	210,762	230,041
Interest-bearing	1,073,995	1,122,443
Total deposits	1,284,757	1,352,484
Borrowings	61	21,049
Advance payments by borrowers taxes and insurance	10,222	10,531
Accrued interest payable and other liabilities	18,603	14,111
Total liabilities	1,313,643	1,398,175
Commitments and contingent liabilities
Stockholders' equity:
Preferred Stock, $0.01 par value, 25,000,000 shares authorized, none issued or outstanding	0	0
Common Stock, $0.01 par value, 100,000,000 shares authorized; 15,278,464 shares issued at December 31, 2019 and 16,481,514 shares issued at December 31, 2018	153	165
Additional paid-in capital	112,420	130,547
Retained earnings	61,573	56,167
Accumulated other comprehensive income	226	271
Total stockholders' equity	174,372	187,150
Total liabilities and stockholders' equity	$ 1,488,015	$ 1,585,325

Consolidated Statements of Fi_2

Consolidated Statements of Financial Condition (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Statement of Financial Position [Abstract]
Allowance for loan losses	$ 7,632	$ 8,470
Preferred Stock, par value (usd per share)	$ 0.01	$ 0.01
Preferred Stock, shares authorized	25,000,000	25,000,000
Preferred Stock, shares issued	0	0
Preferred Stock, shares outstanding	0	0
Common Stock, par value (usd per share)	$ 0.01	$ 0.01
Common Stock, shares authorized	100,000,000	100,000,000
Common Stock, shares issued	15,278,464	16,481,514

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Interest and dividend income
Loans, including fees	$ 60,568	$ 57,052
Securities	2,082	2,229
Other	2,758	2,006
Total interest income	65,408	61,287
Interest expense
Deposits	13,128	8,561
Borrowings	89	656
Total interest expense	13,217	9,217
Net interest income	52,191	52,070
Provision for (recovery of) loan losses	3,825	145
Net interest income	48,366	51,925
Noninterest income
Deposit service charges and fees	3,844	3,968
Loan servicing fees	451	439
Fees and Commissions, Mortgage Banking and Servicing	149	257
Gain on sale of equity securities	295	3,558
Unrealized gains on equity securities	0	3,427
Gain on sale of premises held-for-sale	0	93
Gain (Loss) on Disposition of Other Assets	(44)
Earnings on bank owned life insurance	136	174
Bank-owned life insurance death benefit	0	1,389
Other	497	635
Total noninterest income	6,172	14,877
Noninterest expense
Compensation and benefits	21,266	22,987
Office occupancy and equipment	7,069	6,817
Advertising and public relations	657	848
Information technology	2,999	2,792
Supplies, telephone, and postage	1,316	1,433
Amortization of intangibles	61	184
Nonperforming asset management	105	353
Operations of other real estate owned	52	432
FDIC insurance premiums	127	437
Other	3,962	3,453
Total noninterest expense	38,641	40,754
Income (loss) before income taxes	15,897	26,048
Income tax expense	4,225	6,706
Net income (loss)	$ 11,672	$ 19,342
Basic earnings (loss) per common share (usd per share)	$ 0.75	$ 1.11
Weighted average common shares outstanding (shares)	15,594,883	17,434,345
Loan Servicing [Member]
Noninterest income
Trust	$ 844	$ 937

Consolidated Statements Compreh

Consolidated Statements Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 11,672	$ 19,342
Unrealized holding loss on securities arising during the period	(62)	(136)
Tax effect	17	37
Comprehensive loss, net of tax	(45)	(99)
Other comprehensive loss	(45)	(99)
Comprehensive income	$ 11,627	$ 19,243

Consolidated Statements of Chan

Consolidated Statements of Changes In Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)
Beginning Balance at Dec. 31, 2017	$ 197,634	$ 179	$ 153,811	$ 43,274	$ 370
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	19,342	0	0	19,342	0
Other comprehensive loss, net of tax effect	(99)	0	0	0	(99)
Repurchase and retirement of common stock	(23,284)	(14)	(23,270)	0	0
Cash dividends declared on common stock	(6,449)	0	(6)	(6,449)	0
Ending Balance at Dec. 31, 2018	187,150	165	130,547	56,167	271
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	11,672	0	0	11,672	0
Other comprehensive loss, net of tax effect	(45)	0	0	0	(45)
Repurchase and retirement of common stock	(18,139)	(12)	(18,127)	0	0
Cash dividends declared on common stock	(6,266)	0	0	(6,266)	0
Ending Balance at Dec. 31, 2019	$ 174,372	$ 153	$ 112,420	$ 61,573	$ 226

Consolidated Statements of Ch_2

Consolidated Statements of Changes in Stockholders' Equity (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Statement of Stockholders' Equity [Abstract]
Purchase and retirement of common stock (shares)	1,203,050	1,476,963
Cash dividends declared on common stock (usd per share)	$ 0.4	$ 0.37

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Cash flows from operating activities
Net income	$ 11,672	$ 19,342
Adjustments to reconcile to net loss to net cash from operating activities
Provision for (recovery of) loan losses	3,825	145
Stock-based compensation expense	0	6
Depreciation and amortization	1,613	1,535
Amortization of premiums and discounts on securities and loans	8	11
Amortization of intangibles	61	184
Amortization and impairment of servicing assets	85	94
Net change in net deferred loan origination costs	157	197
Net loss on sale of other real estate owned	(111)	56
Gain on sale of equity securities	(295)	(3,558)
Gain (Loss) on Disposition of Other Assets	44
Gain on sale of premises held-for-sale	0	(93)
Other real estate owned valuation adjustments	38	27
Net change in:
Deferred income tax	2,362	6,328
Accrued interest receivable	389	(333)
Earnings on bank owned life insurance	(136)	(174)
Other assets	3,864	1,694
Accrued interest payable and other liabilities	(2,202)	(1,349)
Net Cash Provided by (Used in) Operating Activities	21,374	20,685
Securities
Proceeds from maturities	107,921	114,583
Proceeds from principal repayments	3,076	3,587
Proceeds from sales of securities	3,722	4,059
Purchases of securities	(83,081)	(113,614)
Loans receivable
Payments for (Proceeds from) Federal Home Loan Bank Stock	(540)	(1,312)
Purchase of FHLB and FRB stock	(4)	(1,048)
Proceeds from sale of other real estate owned	1,299	2,172
Purchases of premises and equipment, net	(798)	(1,609)
Net cash from (used in) investing activities	184,176	8,060
Cash flows from financing activities
Net change in deposits	(67,727)	12,433
Net change in borrowings	(20,988)	(39,719)
Net change in advance payments by borrowers for taxes and insurance	(309)	(1,114)
Repurchase and retirement of common stock	(18,139)	(23,284)
Cash dividends paid on common stock	(6,266)	(6,449)
Net cash used in financing activities	(113,429)	(58,133)
Net change in cash and cash equivalents	92,121	(29,388)
Beginning cash and cash equivalents	98,204	127,592
Ending cash and cash equivalents	190,325	98,204
Supplemental disclosures of cash flow information:
Interest paid	13,446	9,073
Income taxes paid	412	342
Income taxes refunded	18	0
Loans transferred to other real estate owned	186	1,482
Transfer of Property to Held-for-sale	$ 6,694	$ 0

Summary of Significant Accounti

Summary of Significant Accounting Policies (Notes)	12 Months Ended
	Dec. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Summary of Significant Accounting Policies	Basis of Presentation : BankFinancial Corporation, a Maryland corporation headquartered in Burr Ridge, Illinois, is the owner of all of the issued and outstanding capital stock of BankFinancial, National Association (the “Bank”). BankFinancial Corporation is a registered Bank Holding Company and its wholly-owned bank subsidiary is operating as BankFinancial, National Association. Principles of Consolidation : The consolidated financial statements include the accounts of and transactions of BankFinancial Corporation, the Bank, and the Bank’s wholly-owned subsidiaries, Financial Assurance Services, Inc. and BFIN Asset Recovery Company, LLC (formerly BF Asset Recovery Corporation) (collectively, “the Company”) and have been prepared in conformity with accounting principles generally accepted in the United States of America (“US GAAP”). All significant intercompany accounts and transactions have been eliminated. The Company’s revenues, operating income, and assets are primarily from the banking industry. Loan origination customers are mainly located in the greater Chicago metropolitan area. To supplement loan originations, the Company purchases loans. The loan portfolio is concentrated in loans that are primarily secured by real estate. Use of Estimates : The preparation of the consolidation financial statements in conformity with US GAAP requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Although these estimates and assumptions are based on the best available information, actual information, actual results could differ from those estimates. Interest-bearing Deposits in Other Financial Institutions : Interest-bearing deposits in other financial institutions maturing in less than 90 days are carried at cost. Cash Flows : Cash and cash equivalents include cash, deposits with other financial institutions maturing in less than 90 days, and daily federal funds sold. Net cash flows are reported for customer loan and deposit transactions, interest bearing deposits in other financial institutions, borrowings, and advance payments by borrowers for taxes and insurance. Securities : Debt securities are classified as available-for-sale when they might be sold before maturity. Securities available-for-sale are carried at fair value, with unrealized holding gains and losses reported in other comprehensive income (loss), net of tax. Interest income includes amortization of purchase premium or discount. Premiums and discounts on securities are amortized on the level-yield method without anticipating prepayments, except for mortgage-backed securities where prepayments are anticipated. Gains and losses on sales are based on the amortized cost of the security sold. Declines in the fair value of securities below their cost that are other-than-temporary are reflected as realized losses. In determining if losses are other-than-temporary, management considers: (1) the length of time and extent that fair value has been less than cost or adjusted cost, as applicable, (2) the financial condition and near term prospects of the issuer, and (3) whether the Company has the intent to sell the debt security or it is more likely than not that the Company will be required to sell the debt security before the anticipated recovery. Securities also include investments in certificates of deposit with maturities of greater than 90 days. These certificates of deposit are placed with insured institutions for varying maturities and amounts that are fully insured by the Federal Deposit Insurance Corporation (“FDIC”). Equity Securities : Equity securities are accounted for in accordance with ASC 321-10 Investments - Equity Securities. Our equity securities may be classified into two categories and accounted for as follows: • Equity securities with a readily determinable fair value are reported at fair value, with unrealized gains and losses included in earnings. Any dividends received are recorded in interest income. • Equity securities without a readily determinable fair value are reported at their cost minus impairment, if any, plus or minus changes resulting from observable price changes in orderly transactions for the identical or similar investment of the same issuer and their impact on fair value. Any dividends received are recorded in interest income. The fair value of equity investments with readily determinable fair values is primarily obtained from third-party pricing services. For equity investments without readily determinable fair values, when an orderly transaction for the identical or similar investment of the same issuer is identified, we use the valuation techniques permitted under ASC 820 Fair Value to evaluate the observed transaction(s) and adjust the fair value of the equity investment. ASC 321-10 also provides guidance related to accounting for impairment of equity securities without readily determinable fair values. The qualitative assessment to determine whether impairment exists requires the use of our judgment in certain circumstances. If, after completing the qualitative assessment we conclude an equity investment without a readily determinable fair value is impaired, a loss for the difference between the equity investment’s carrying value and its fair value may be recognized as a reduction to noninterest income in the Consolidated Statements of Operations. Federal Home Loan Bank (“FHLB”) Stock : The Bank is a member of the FHLB system. Members are required to own a certain amount of stock based on the level of borrowings and other factors, and may invest in additional amounts. FHLB stock is carried at cost, classified as a restricted security, and periodically evaluated for impairment based on ultimate recovery of par value. Both cash and stock dividends are reported as income. Federal Reserve Bank (“FRB”) Stock : The Bank is a member of its regional Federal Reserve Bank. FRB stock is carried at cost, classified as a restricted security, and periodically evaluated for impairment based on ultimate recovery of par value. Both cash and stock dividends are reported as income. Loans and Loan Income : 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 the allowance for loan losses, premiums and discounts on loans purchased, and net deferred loan costs. Interest income on loans is recognized in income over the term of the loan based on the amount of principal outstanding. Premiums and discounts associated with loans purchased are amortized over the contractual term of the loan using the level–yield method. Loan origination fees, net of certain direct origination costs, are deferred and recognized in interest income using the level‑yield method without anticipating prepayments. Interest income is reported on the interest method. Interest income is generally discontinued at the earlier of a loan is 90 days past due or when we do not expect to receive full payment of interest or principal. Past due status is based on the contractual terms of the loan. All interest accrued but not received for loans that have been placed on nonaccrual status is reversed against interest income. Interest received on such loans is accounted for on the cash–basis or cost–recovery method until qualifying for return to accrual status. Once a loan is placed on nonaccrual status, the borrower must generally demonstrate at least six months of payment performance before the loan is eligible to return to accrual status. Generally, the Company utilizes the “90 days delinquent, still accruing” category of loan classification when: (1) the loan is repaid in full shortly after the period end date; (2) the loan is well secured and there are no asserted or pending legal barriers to its collection; or (3) the borrower has remitted all scheduled payments and is otherwise in substantial compliance with the terms of the loan, but the processing of payments actually received or the renewal of a loan has not occurred for administrative reasons. Impaired Loans: Impaired loans principally consist of nonaccrual loans and troubled debt restructurings (“TDRs”). A loan is considered impaired when, based on current information and events, management believes that it is probable that we will be unable to collect all amounts due (both principal and interest) according to the original contractual terms of the loan agreement. Once a loan is determined to be impaired, the amount of impairment is measured based on the loan's observable fair value, the fair value of the underlying collateral less selling costs if the loan is collateral-dependent, or the present value of expected future cash flows discounted at the loan's effective interest rate. If the measurement of the impaired loan is less than the recorded investment in the loan, the bank's allowance for the impaired collateral dependent loan under ASC 310-10-35 is based on fair value (less costs to sell), but the charge-off (the confirmed “loss”) is based on the appraised value. The remaining recorded investment in the loan after the charge-off will have a loan loss allowance for the amount by which the estimated fair value of the collateral (less costs to sell) is less than its appraised value. Impaired loans with specific reserves are reviewed quarterly for any changes that would affect the specific reserve. Any impaired loan for which a determination has been made that the economic value is permanently reduced is charged-off against the allowance for loan losses to reflect its current economic value in the period in which the determination has been made. At the time a collateral-dependent loan is initially determined to be impaired, we review the existing collateral appraisal. If the most recent appraisal is greater than a year old, a new appraisal is obtained on the underlying collateral. Appraisals are updated with a new independent appraisal at least annually and are formally reviewed by our internal appraisal department upon receipt of a new appraisal. All impaired loans and their related reserves are reviewed and updated each quarter. Troubled Debt Restructurings : A loan is classified as a troubled debt restructuring when a borrower is experiencing financial difficulties that leads to a restructuring of the loan, and the Company grants concessions to the borrower in the restructuring that it would not otherwise consider. These concessions may include rate reductions, principal forgiveness, extension of maturity date and other actions intended to minimize potential losses. In determining whether a debtor is experiencing financial difficulties, the Company considers if the debtor is in payment default or would be in payment default in the foreseeable future without the modification, the debtor declared or is in the process of declaring bankruptcy, there is substantial doubt that the debtor will continue as a going concern, the debtor has securities that have been or are in the process of being delisted, the debtor's entity-specific projected cash flows will not be sufficient to service any of its debt, or the debtor cannot obtain funds from sources other than the existing creditors at a market rate for debt with similar risk characteristics. In determining whether the Company has granted a concession, the Company assesses, if it does not expect to collect all amounts due, whether the current value of the collateral will satisfy the amounts owed, whether additional collateral or guarantees from the debtor will serve as adequate compensation for other terms of the restructuring, and whether the debtor otherwise has access to funds at a market rate for debt with similar risk characteristics. Periodically, the Company will restructure a note into two separate notes (A/B structure), charging off the entire B portion of the note. The A note is structured with appropriate loan-to-value and cash flow coverage ratios that provide for a high likelihood of repayment. The A note is classified as a nonperforming note until the borrower has displayed a historical payment performance for a reasonable time prior to and subsequent to the restructuring. A period of sustained repayment for at least six months generally is required to return the note to accrual status provided that management has determined that the performance is reasonably expected to continue. The A note will be classified as a restructured note (either performing or nonperforming) through the calendar year of the restructuring that the historical payment performance has been established. Allowance for Loan Losses: The Company establishes provisions for loan losses, which are charged to the Company’s results of operations to maintain the allowance for loan losses to absorb probable incurred credit losses in the loan portfolio. In determining the level of the allowance for loan losses, the Company considers past and current loss experience, trends in classified loans, evaluations of real estate collateral, current economic conditions, volume and type of lending, adverse situations that may affect a borrower’s ability to repay a loan and the levels of nonperforming and other classified loans. The amount of the allowance is based on estimates and the ultimate losses may vary from the estimates as more information becomes available or events change. The Company provides for loan losses based on the allowance method. Accordingly, all loan losses are charged to the related allowance and all recoveries are credited to it. Additions to the allowance for loan losses are provided by charges to income based on various factors that, in our judgment, deserve current recognition in estimating probable incurred credit losses. The Company reviews the loan portfolio on an ongoing basis and makes provisions for loan losses on a quarterly basis to maintain the allowance for loan losses in accordance with US GAAP. The allowance for loan losses consists of two components: • specific allowances established for any impaired residential non-owner occupied mortgage, multi-family mortgage, nonresidential real estate, construction and land, commercial, and commercial lease loans for which the recorded investment in the loan exceeds the measured value of the loan; and • general allowances for loan losses for each loan class based on historical loan loss experience; and adjustments to historical loss experience (general allowances), maintained to cover uncertainties that affect our estimate of probable incurred credit losses for each loan class. The adjustments to historical loss experience are based on our evaluation of several factors, including levels of, and trends in, past due and classified loans; levels of, and trends in, charge–offs and recoveries; trends in volume and terms of loans, including any credit concentrations in the loan portfolio; experience and ability of lending management and other relevant staff; and national and local economic trends and conditions. The Company evaluates the allowance for loan losses based upon the combined total of the specific and general components. Generally, when the loan portfolio increases, absent other factors, the allowance for loan loss methodology results in a higher dollar amount of estimated probable incurred credit losses than would be the case without the increase. Conversely, when the loan portfolio decreases, absent other factors, the allowance for loan loss methodology generally results in a lower dollar amount of estimated probable losses than would be the case without the decrease. The loss ratio used in computing the required general loan loss reserve allowance for a given class of loan consists of (i) the actual loss ratio (measured on a weighted, rolling twelve-quarter basis), (ii) the change in credit quality within the specific loan class during the period, (iii) the actual inherent risk factor assigned to the specific loan class and (iv) the actual concentration of risk factor assigned to the specific loan class (collectively, the “Specific Loan Class Risk Factors”). The Specific Loan Class Risk Factors are weighted equally in the calculation. In addition, two additional quantitative factors, the National Economic risk factor and the Local Economic risk factor, are also components of the computation but are given different weightings in their computation due to their relative applicability to the specific loan class in the context of the effect of national and local economic conditions on their risk profile and performance. Mortgage Servicing Rights : Mortgage 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 and gains on sales of loans are recorded in the statement of operations. 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. The valuation model incorporates assumptions that market participants would use in estimating future net servicing income, such as the servicing cost per loan, the discount rate, the escrow float rate, an inflation rate, ancillary income, prepayment speeds and default rates and losses. The Company compares the valuation model inputs and results to published industry data in order to validate the model results and assumptions. All classes of servicing assets are subsequently measured using the amortization method which requires servicing rights to be amortized into noninterest income in proportion to, and over the period of, the estimated future net servicing income of the underlying loans. Servicing assets 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 amortization and impairment of servicing assets on the statement of operations. 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 that is reported on the statement of operations as loan servicing fees 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. Late fees and ancillary fees related to loan servicing are not material. First mortgage loans serviced for others are not included in the accompanying consolidated statements of financial condition. The unpaid principal balances of these loans were $63.4 million and $76.2 million at December 31, 2019 and 2018 , respectively. Custodial escrow balances maintained in connection with the foregoing loan servicing activities were $2.2 million and $1.8 million at December 31, 2019 and 2018 , respectively. Capitalized mortgage servicing rights are included in other assets in the accompanying consolidated statements of financial condition. Servicing rights were $335,000 and $420,000 at December 31, 2019 and 2018 , respectively, with no valuation allowance at December 31, 2019 and 2018 . Other Real Estate Owned ("OREO") : Foreclosed assets are initially recorded at fair value less cost to sell when acquired, establishing a new cost basis. Physical possession of residential real estate property collateralizing a consumer mortgage loan occurs when the legal title is obtained upon completion of foreclosure or when the borrower conveys all interest in the property to satisfy the loan through completion of a deed in lieu of foreclosure or through a similar legal agreement. These assets are subsequently accounted for at a lower of cost or fair value less estimated cost to sell. If fair value declines subsequent to foreclosure, a valuation allowance is recorded through expense. Operating expenses, gains and losses on disposition, and changes in the valuation allowance are reported in noninterest expense as operations of other real estate owned. Premises and Equipment : Land is carried at cost. Premises and equipment are stated at cost less accumulated depreciation. Depreciation is included in noninterest expense and is computed on the straight-line method over the estimated useful lives of the assets. Useful lives are estimated to be 25 to 40 years for buildings and improvements that extend the life of the original building, ten to 20 years for routine building improvements, five to 15 years for furniture and equipment, two to five years for computer hardware and software and no greater than four years on automobiles. The cost of maintenance and repairs is charged to expense as incurred and significant repairs are capitalized. On April 23, 2018, the Bank sold its office corporate office building in Burr Ridge, Illinois. A net gain of $93,000 was recorded in the second quarter of 2018 in connection with the sale. Other Intangible Assets : Intangible assets acquired in a purchase business combination with definite useful lives are amortized over their estimated useful lives to their estimated residual values. Core deposit intangible assets (“CDI”), are recognized at the time of acquisition based on valuations prepared by independent third parties or other estimates of fair value. In preparing such valuations, variables such as deposit servicing costs, attrition rates, and market discount rates are considered. CDI assets are amortized to expense over their useful lives. CDI were $41,000 and $102,000 at December 31, 2019 and 2018 , respectively, and are included in other assets in the accompanying consolidated statements of financial condition. Bank-Owned Life Insurance: The Company has purchased life insurance policies on certain key executives. The Company owned life insurance is recorded at the amount that can be realized under the insurance contract at the balance sheet date, which is the cash surrender value adjusted for other charges or other amounts due that are probable at settlement. Long-Term Assets : Premises and equipment, core deposit and other intangible assets, and other long-term assets are reviewed for impairment when events indicate that their carrying amount may not be recoverable from future undiscounted cash flows. If impaired, the assets are recorded at fair value. 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. Income Taxes : Income tax expense is the total of the current year income tax due or refundable and the change in deferred tax assets and liabilities. Under US GAAP, a deferred tax asset valuation allowance is required to be recognized if it is “more likely than not” that the deferred tax asset will not be realized. The determination of the realizability of the deferred tax assets is highly subjective and dependent upon judgment concerning management’s evaluation of both positive and negative evidence, the forecasts of future taxable income, applicable tax planning strategies, and assessments of current and future economic and business conditions. The Company considers both positive and negative evidence regarding the ultimate realizability of our deferred tax assets. Examples of positive evidence may include the existence, if any, of taxes paid in available carry-back years and the likelihood that taxable income will be generated in future periods. Examples of negative evidence may include a cumulative loss in the current year and prior two years and negative general business and economic trends. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period of the enactment date. This analysis is updated quarterly and adjusted as necessary. At December 31, 2019 , the Company had a net deferred tax asset of $3.9 million . 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, presuming that a tax examination will occur. The amount recognized is the largest amount of tax benefit that is greater than 50% likely to be realized on examination. For tax positions not meeting the "more likely than not" test, no tax benefit is recorded. Retirement Plans : Employee 401(k) and profit sharing plan expense is the amount of matching contributions and any annual discretionary contribution made at the discretion of the Company’s Board of Directors. Earnings per Common Share : Basic earnings per common share is net income divided by the weighted average number of common shares outstanding during the period. Diluted earnings per common share is net income divided by the weighted average number of common shares outstanding during the period plus the dilutive effect of restricted stock shares. 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 that there are such matters that will have a material effect on the financial statements as of December 31, 2019 . Restrictions on Cash : The Bank is required to maintain reserve balances in cash or on deposit with the Federal Reserve Bank, based on a percentage of deposits. As December 31, 2019 and 2018 , the Bank has met the requirements. The nature of the Company’s business requires that it maintain amounts with banks and federal funds sold which, at times, may exceed federally insured limits. Management monitors these correspondent relationships and the Company has not experienced any losses in such accounts. Fair Values of Financial Instruments : Fair values of financial instruments are estimated using relevant market value information and other assumptions, as more fully disclosed in a separate note. 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. Comprehensive Income : Comprehensive income consists of net income and other comprehensive income (loss). Other comprehensive income (loss) includes unrealized gains and losses on securities, net of tax, which is also recognized as separate components of stockholders’ equity. 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. Operating Segments: While management monitors the revenue streams of the various products and services, operations are managed and financial performance is evaluated on a Company-wide basis. Operating results are not reviewed by senior management to make resource allocation or performance decisions. Accordingly, all of the financial service operations are considered by management to be aggregated in one reportable operating segment. Reclassifications : Certain reclassifications have been made in the prior year’s financial statements to conform to the current year’s presentation. Reclassifications had no effect on prior year net income or stockholders’ equity. Lease Accounting: The Company adopted FASB issued ASU No. 2016-02, “Leases (Topic 842)” (“ASU 2016-02”), including the adoption of the practical expedients, effective January 1, 2019. Lessees are required to recognize assets and liabilities on the balance sheet for leases with lease terms greater than 12 months. The Company recorded assets and liabilities of $6.7 million as a result of recording additional lease contracts where the Company is lessee. The Company did not restate comparative periods. The right of use assets are included in other assets and the lease obligations are included in other liabilities in the accompanying consolidated statements of financial condition. Newly Issued Not Yet Effective Accounting Standards In June 2016, the FASB issued ASU No. 2016-13, “Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments” (“ASU 2016-13”). These amendments require the measurement of all expected credit losses for financial assets held at the reporting date based on historical experience, current conditions, and reasonable and supportable forecasts. Financial institutions and other organizations will now use forward-looking information to better inform their credit loss estimates. Many of the loss estimation techniques applied today will still be permitted, although the inputs to those techniques will change to reflect the full amount of expected credit losses. In addition, the ASU amends the accounting for credit losses on available-for-sale debt securities and purchased financial assets with credit deterioration. For SEC filers who are smaller reporting companies, ASU 2016-13 is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2022.

Earnings Per Share (Notes)

Earnings Per Share (Notes)	12 Months Ended
	Dec. 31, 2019
Earnings Per Share [Abstract]
Earnings Per Share	Amounts reported in earnings per share reflect earnings available to common stockholders for the period divided by the weighted average number of shares of common stock outstanding during the period, exclusive of unvested restricted stock shares. Stock options and restricted stock are regarded as potential common stock and are considered in the diluted earnings per share calculations to the extent that they would have a dilutive effect if converted to common stock. For the years ended 2019 2018 Net income available to common stockholders $ 11,672 $ 19,342 Average common shares outstanding 15,594,883 17,434,780 Less - Unvested restricted stock shares — (435 ) Basic and diluted weighted average common shares outstanding 15,594,883 17,434,345 Basic and diluted earnings per common share $ 0.75 $ 1.11

Securities (Notes)

Securities (Notes)	12 Months Ended
	Dec. 31, 2019
Investments, Debt and Equity Securities [Abstract]
Securities	The fair value of securities and the related gross unrealized gains and losses recognized in accumulated other comprehensive income is as follows: Available-for-Sale Securities Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value December 31, 2019 Certificates of deposit $ 48,666 $ — $ — $ 48,666 Municipal securities 505 8 — 513 Mortgage-backed securities - residential 7,727 310 — 8,037 Collateralized mortgage obligations - residential 2,986 4 (13 ) 2,977 $ 59,884 $ 322 $ (13 ) $ 60,193 December 31, 2018 Certificates of deposit $ 73,507 $ — $ — $ 73,507 Municipal securities 509 — — 509 Mortgage-backed securities - residential 10,116 400 (38 ) 10,478 Collateralized mortgage obligations - residential 3,676 11 (2 ) 3,685 $ 87,808 $ 411 $ (40 ) $ 88,179 Mortgage-backed securities and collateralized mortgage obligations reflected in the preceding table were issued by U.S. government-sponsored entities and agencies, Freddie Mac, Fannie Mae and Ginnie Mae, and are obligations which the government has affirmed its commitment to support. Equity Investments (1) (2) Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value December 31, 2018 Visa Class B shares $ — $ 3,427 $ — $ 3,427 (1) Equity investments are included in Other Assets in the Consolidated Statements of Financial Condition. (2) There were no equity investments at December 31, 2019 The amortized cost and fair values of securities available-for-sale at December 31, 2019 by contractual maturity are shown below. Securities not due at a single maturity date are shown separately. Expected maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties. December 31, 2019 Amortized Cost Fair Value Due in one year or less $ 48,767 $ 48,768 Due after one year through five years 404 411 49,171 49,179 Mortgage-backed securities - residential 7,727 8,037 Collateralized mortgage obligations - residential 2,986 2,977 $ 59,884 $ 60,193 Investment securities available-for-sale with carrying amounts of $2.0 million and $2.7 million at December 31, 2019 and 2018 , respectively, were pledged as collateral on customer repurchase agreements and for other purposes as required or permitted by law. Sales of equity securities were as follows: For the years ended 2019 2018 Proceeds $ 3,722 $ 4,059 Gross gains 295 3,572 Gross losses — (14 ) Securities available-for-sale with unrealized losses at December 31, 2019 and 2018 not recognized in income are as follows: Less than 12 Months 12 Months or More Total Count Fair Value Unrealized Loss Count Fair Value Unrealized Loss Count Fair Value Unrealized Loss December 31, 2019 Collateralized mortgage obligations - residential 3 $ 1,566 $ (10 ) 1 $ 937 $ (3 ) 4 $ 2,503 $ (13 ) December 31, 2018 Mortgage-backed securities - residential — — — 2 904 (38 ) 2 904 (38 ) Collateralized mortgage obligations - residential — — — 2 1,729 (2 ) 2 1,729 (2 ) — $ — $ — 4 $ 2,633 $ (40 ) 4 $ 2,633 $ (40 ) The Company evaluates marketable investment securities with significant declines in fair value on a quarterly basis to determine whether they should be considered other-than-temporarily impaired under current accounting guidance, which generally provides that if a marketable security is in an unrealized loss position, whether due to general market conditions or industry or issuer-specific factors, the holder of the securities must assess whether the impairment is other-than-temporary. Certain collateralized mortgage obligations that the Company holds in its investment portfolio were in an unrealized loss position at December 31, 2019 , but the unrealized loss was not considered significant under the Company’s impairment testing methodology. In addition, the Company does not intend to sell these securities, and it is not likely that the Company will be required to sell the securities before their anticipated recovery occurs. The Bank, as a member of Visa USA, received 51,404 unrestricted shares of Visa, Inc. Class B common stock in connection with Visa, Inc.’s initial public offering in 2007 and a related retroactive responsibility plan. The retroactive responsibility plan obligates all former Visa USA members to indemnify Visa USA, in proportion to their equity interests in Visa USA, for certain litigation losses and expenses, including settlement expenses, for the lawsuits covered by the retrospective responsibility plan. Due to the restrictions that the retrospective responsibility plan imposes on the Company’s Visa, Inc. Class B shares, the Company had not recorded the Class B shares as an asset. The Bank sold 25,702 shares of Visa Class B common stock in the fourth quarter of 2018 and recorded a gain of $3.6 million . For equity investments without readily determinable fair values, when an orderly transaction for the identical or similar investment of the same issuer is identified, we use the valuation techniques permitted under ASC 820 Fair Value to evaluate the observed transaction(s) and adjust the fair value of the equity investment. Based on the existing transfer restriction and the uncertainty of the outcome of the Visa litigation mentioned above, the remaining 25,702 Visa Class B shares that the Company owned as of December 31, 2018 were carried at $3.4 million in other assets with a corresponding gain. The Bank sold the remaining 25,702 shares of Visa Class B common stock in the first quarter of 2019 and recorded a gain of $295,000 .

Loans Receivable (Notes)

Loans Receivable (Notes)	12 Months Ended
	Dec. 31, 2019
Receivables [Abstract]
Loans Receivable	December 31, 2019 2018 One-to-four family residential real estate $ 55,750 $ 70,371 Multi-family mortgage 563,750 619,870 Nonresidential real estate 134,674 152,442 Construction and land — 172 Commercial loans 145,714 187,406 Commercial leases 272,629 299,394 Consumer 2,211 1,539 1,174,728 1,331,194 Net deferred loan origination costs 912 1,069 Allowance for loan losses (7,632 ) (8,470 ) Loans, net $ 1,168,008 $ 1,323,793 Loan Origination/Risk Management. The Company has certain lending policies and procedures in place that are designed to maximize loan income within an acceptable level of risk. The Company reviews and approves these policies and procedures on a periodic basis. A reporting system supplements the review process by providing management with frequent reports related to loan production, loan quality, concentrations of credit, loan delinquencies and nonperforming and potential problem loans via trend and risk rating migration. The Company requires title insurance insuring the priority of our lien on real estate collateral, fire and extended coverage casualty insurance, and, if appropriate, flood insurance, in order to protect our security interest in the underlying real property collateral. The majority of the loans the Company originates are commercial-related loans, such as multi-family, nonresidential real estate, commercial, construction and land loans, and commercial leases. In addition, we originated one-to-four family residential mortgage loans and consumer loans until December 31, 2017. We also occasionally purchase and sell loan participations. The following briefly describes our principal loan products. The Company originates real estate loans principally secured by first liens, both non-owner occupied and owner occupied commercial real estate. The non-owner occupied commercial real estate properties are predominantly multi-family apartment buildings, office buildings, light industrial buildings, shopping centers and mixed-use developments and, to a much lesser extent, more specialized properties such as nursing homes and other healthcare facilities. Multi-family mortgage loans generally are secured by multi-family rental properties such as apartment buildings, including subsidized apartment units. In general, loan amounts range between $500,000 and $5.0 million at December 31, 2019 . Approximately 57.0% of the collateral is located outside of our primary market area; however, we do not have a concentration in any single market in excess of 25% of our loan portfolio outside of our primary market area. In underwriting multi-family mortgage loans, the Company considers a number of factors, which include the projected net cash flow to the loan’s debt service requirement (generally requiring a minimum ratio of 120% ), the age and condition of the collateral, the financial resources and income level of the borrower, the borrower’s experience in owning or managing similar properties and, proximity to diverse employment opportunities. Multi-family mortgage loans are generally originated in amounts up to 80% of the appraised value of the property securing the loan. Personal guarantees are usually obtained on multi-family mortgage loans if the borrower/property owner is a legal entity. Loans secured by multi-family mortgages generally involve a greater degree of credit risk as a result of several factors, including the concentration of principal in a limited number of loans and borrowers, the effects of general economic conditions on income producing properties, and the increased difficulty of evaluating and monitoring these types of loans. Furthermore, the repayment of loans secured by multi-family mortgages typically depends upon the successful operation of the related real estate property. If the cash flow from the project is reduced below acceptable thresholds, the borrower’s ability to repay the loan may be impaired. The Company emphasizes nonresidential real estate loans with initial principal balances between $500,000 and $5.0 million . Substantially all of our nonresidential real estate loans are secured by properties located in our primary market area. The Company’s nonresidential real estate loans are generally written as three - or five -year adjustable-rate mortgages or mortgages with balloon maturities of three or five years. Amortization on these loans is typically based on 20 - to 30 -year schedules. The Company also originates some 15 -year fixed-rate, fully amortizing loans. In the underwriting of nonresidential real estate loans, the Company generally lends up to 80% of the property’s appraised value. Decisions to lend are based on the economic viability of the property as the primary source of repayment and the creditworthiness of the borrower. In evaluating a proposed commercial real estate loan, we emphasize the ratio of the property’s projected net cash flow to the loan’s debt service requirement (generally requiring a minimum ratio of 120% ), computed after deduction for a vacancy factor and property expenses we deem appropriate. Personal guarantees are usually pursued and obtained from nonresidential real estate borrowers. Nonresidential real estate loans generally carry higher interest rates and have shorter terms and typically involve larger loan balances concentrated with single borrowers or groups of related borrowers. In addition, the payment of loans secured by income-producing properties typically depends on the successful operation of the related real estate project and thus may be subject to a greater extent to adverse conditions in the real estate market and in the general economy. The Company makes various types of secured and unsecured commercial loans to customers in our market area for the purpose of financing equipment acquisition, expansion, working capital and other general business purposes. The terms of these loans generally range from less than one year to five years. The loans are either negotiated on a fixed-rate basis or carry adjustable interest rates indexed to (i) a lending rate that is determined internally, or (ii) a short-term market rate index. Commercial credit decisions are based upon our assessment of the borrower’s cash flow, proposed collateral, business and credit history and any additional positive or negative credit risk factors. The Company determines the borrower’s ability to repay in accordance with the proposed terms of the loans and we assess the risks involved. An evaluation is made of the borrower to determine character and capacity to manage. Personal guarantees of the principals are pursued and usually obtained. In addition to evaluating the loan borrower’s financial statements, we consider the adequacy of the primary and secondary sources of repayment for the loan. Independent reports of the borrower’s credit history supplement our analysis of the borrower’s creditworthiness and at times are supplemented with inquiries to other banks and trade investigations. Moreover, certain assets listed on personal financial statements are verified. Proposed collateral for a secured transaction also is analyzed to determine its marketability. Commercial business loans generally have higher interest rates because they have a higher risk of default since their repayment generally depends on the successful operation of the borrower’s business and the sufficiency of any collateral. Pricing of commercial loans is based primarily on the credit risk of the borrower, with due consideration given to borrowers with appropriate deposit relationships. The Company also lends money to small and mid-size leasing companies for equipment financing leases. Generally, commercial leases are secured by an assignment by the leasing company of the lease payments and by a secured interest in the equipment being leased. In most cases, the lessee acknowledges our security interest in the leased equipment and agrees to send lease payments directly to us. Consequently, the Company underwrites lease loans by examining the creditworthiness of the lessee rather than the lessor. Lease loans generally are non-recourse to the leasing company. Generally, the Company’s commercial leases are secured primarily by technology equipment, medical equipment, material handling equipment and other capital equipment. Lessees tend to be publicly-traded companies with investment-grade rated debt or companies that have not issued public debt and therefore do not have a public debt rating. Commercial leases to these entities have a maximum outstanding credit exposure of $20.0 million to any single entity. Typically, commercial leases to these lessees have a maximum maturity of five years and a maximum outstanding credit exposure of $10.0 million to any single entity. In addition, the Company will originate commercial leases to lessees with below investment-grade public debt ratings and have a maximum outstanding credit exposure of $10.0 million to any single entity. Lease loans are almost always fully amortizing, with fixed interest rates. Although the Company does not actively originate construction and land loans presently, construction and land loans generally consist of land acquisition loans to help finance the purchase of land intended for further development, including single-family homes, multi-family housing and commercial income property, development loans to builders in our market area to finance improvements to real estate, consisting mostly of single-family subdivisions, typically to finance the cost of utilities, roads, sewers and other development costs. Until December 31, 2017, the Company offered conforming and non-conforming, fixed-rate and adjustable-rate residential mortgage loans with maturities of up to 30 years and maximum loan amounts generally of up to $2.5 million . One-to-four family residential mortgage loans were generally underwritten according to Fannie Mae guidelines, and loans that conformed to such guidelines are referred to as “conforming loans.” Private mortgage insurance is required for first mortgage loans with loan-to-value ratios in excess of 80% . The ability of the Company’s borrowers to repay their loans, and the value of the collateral securing such loans, could be adversely impacted by economic weakness in its local markets as a result of unemployment, declining real estate values, or increased residential, office, industrial and retail shopping vacancies due to changes in business conditions. This not only could result in the Company experiencing charge-offs and/or nonperforming assets, but also could necessitate an increase in the provision for loan losses. These events, if they were to recur, would have an adverse impact on the Company’s results of operations and its capital. The following tables present the balance in the allowance for loan losses and the loans receivable by portfolio segment and based on impairment method: Allowance for loan losses Loan Balances Individually evaluated for impairment Collectively evaluated for impairment Total Individually evaluated for impairment Collectively evaluated for impairment Total December 31, 2019 One-to-four family residential real estate $ — $ 675 $ 675 $ 1,835 $ 53,915 $ 55,750 Multi-family mortgage — 3,676 3,676 620 563,130 563,750 Nonresidential real estate — 1,176 1,176 288 134,386 134,674 Commercial loans — 1,308 1,308 — 145,714 145,714 Commercial leases — 757 757 — 272,629 272,629 Consumer — 40 40 — 2,211 2,211 $ — $ 7,632 $ 7,632 $ 2,743 $ 1,171,985 1,174,728 Net deferred loan origination costs 912 Allowance for loan losses (7,632 ) Loans, net $ 1,168,008 Allowance for loan losses Loan Balances Individually evaluated for impairment Collectively evaluated for impairment Total Individually evaluated for impairment Collectively evaluated for impairment Total December 31, 2018 One-to-four family residential real estate $ — $ 699 $ 699 $ 2,218 $ 68,153 $ 70,371 Multi-family mortgage — 3,991 3,991 653 619,217 619,870 Nonresidential real estate 27 1,449 1,476 270 152,172 152,442 Construction and land — 4 4 — 172 172 Commercial loans — 1,517 1,517 — 187,406 187,406 Commercial leases — 755 755 — 299,394 299,394 Consumer — 28 28 — 1,539 1,539 $ 27 $ 8,443 $ 8,470 $ 3,141 $ 1,328,053 1,331,194 Net deferred loan origination costs 1,069 Allowance for loan losses (8,470 ) Loans, net $ 1,323,793 The following table presents the activity in the allowance for loan losses by portfolio segment: One-to-four family residential real estate Multi-family mortgage Non-residential real estate Construc-tion and land Commer-cial loans Commer-cial leases Consumer Total December 31, 2019 Allowance for loan losses: Beginning balance $ 699 $ 3,991 $ 1,476 $ 4 $ 1,517 $ 755 $ 28 $ 8,470 Provision for (recovery of) loan losses 123 (346 ) (217 ) (4 ) 4,224 2 43 3,825 Loans charged off (222 ) — (83 ) — (4,443 ) — (31 ) (4,779 ) Recoveries 75 31 — — 10 — — 116 Total ending allowance balance $ 675 $ 3,676 $ 1,176 $ — $ 1,308 $ 757 $ 40 $ 7,632 December 31, 2018 Allowance for loan losses: Beginning balance 850 3,849 1,605 32 1,357 655 18 $ 8,366 Provision for (recovery of) loan losses (126 ) 143 (36 ) (30 ) 71 95 28 145 Loans charged off (231 ) (35 ) (93 ) — (140 ) — (19 ) (518 ) Recoveries 206 34 — 2 229 5 1 477 Total ending allowance balance $ 699 $ 3,991 $ 1,476 $ 4 $ 1,517 $ 755 $ 28 $ 8,470 Impaired loans The following tables present loans individually evaluated for impairment by class of loans: Loan Balance Recorded Investment Partial Charge-off Allowance for Loan Losses Allocated Average Investment in Impaired Loans Interest Income Recognized December 31, 2019 With no related allowance recorded One-to-four family residential real estate $ 2,168 $ 1,835 $ 339 $ — $ 2,208 $ 51 Multi-family mortgage - Illinois 620 620 — — 637 37 Nonresidential real estate 280 288 — — 589 2 $ 3,068 $ 2,743 $ 339 $ — $ 3,434 $ 90 December 31, 2018 With no related allowance recorded One-to-four family residential real estate $ 2,751 $ 2,172 $ 575 $ — $ 3,274 $ 41 One-to-four family residential real estate - non-owner occupied 86 46 43 — 95 — Multi-family mortgage - Illinois 654 653 — — 795 39 3,491 2,871 618 — 4,164 80 With an allowance recorded - nonresidential real estate 356 270 93 27 21 — $ 3,847 $ 3,141 $ 711 $ 27 $ 4,185 $ 80 Nonaccrual loans The following tables present the recorded investment in nonaccrual and loans 90 days or more past due still on accrual by class of loans: Loan Balance Recorded Investment Loans Past Due Over 90 Days, still accruing December 31, 2019 One-to-four family residential real estate $ 598 $ 512 $ — Nonresidential real estate 280 288 — Investment-rated commercial leases 47 — 47 $ 925 $ 800 $ 47 December 31, 2018 One-to-four family residential real estate $ 1,445 $ 1,168 $ — One-to-four family residential real estate – non-owner occupied 119 79 — Nonresidential real estate 356 270 — $ 1,920 $ 1,517 $ — Nonaccrual loans and impaired loans are defined differently. Some loans may be included in both categories, and some may only be included in one category. Nonaccrual loans include both smaller balance homogeneous loans that are collectively evaluated for impairment and individually classified impaired loans. The Company’s reserve for uncollected loan interest was $81,000 and $72,000 at December 31, 2019 and 2018 , respectively. When a loan is on non-accrual status and the ultimate collectability of the total principal of an impaired loan is in doubt, all payments are applied to principal under the cost recovery method. Alternatively, when a loan is on non-accrual status but there is doubt concerning only the ultimate collectability of interest, contractual interest is credited to interest income only when received, under the cash basis method pursuant to the provisions of FASB ASC 310–10, as applicable. In all cases, the average balances are calculated based on the month–end balances of the financing receivables within the period reported pursuant to the provisions of FASB ASC 310–10, as applicable. Past Due Loans The following tables present the aging of the recorded investment in past due loans at December 31, 2019 by class of loans: 30-59 Days Past Due 60-89 Days Past Due 90 Days or Greater Past Due Total Past Due Loans Not Past Due Total One-to-four family residential real estate loans: Owner occupied $ 777 $ 340 $ 507 $ 1,624 $ 43,365 $ 44,989 Non-owner occupied 280 15 — 295 10,466 10,761 Multi-family mortgage: Illinois 981 302 — 1,283 246,680 247,963 Other — — — — 315,787 315,787 Nonresidential real estate — — 288 288 134,386 134,674 Commercial loans: Regional commercial banking — — — — 24,853 24,853 Health care — — — — 70,430 70,430 Direct commercial lessor — — — — 50,431 50,431 Commercial leases: Investment-rated commercial leases 826 — 47 873 132,966 133,839 Other commercial leases 543 136 — 679 138,111 138,790 Consumer 24 37 — 61 2,150 2,211 $ 3,431 $ 830 $ 842 $ 5,103 $ 1,169,625 $ 1,174,728 The following tables present the aging of the recorded investment in past due loans at December 31, 2018 by class of loans: 30-59 Days Past Due 60-89 Days Past Due 90 Days or Greater Past Due Total Past Due Loans Not Past Due Total One-to-four family residential real estate loans: Owner occupied $ 1,383 $ 638 $ 1,168 $ 3,189 $ 54,155 $ 57,344 Non-owner occupied 393 8 79 480 12,547 13,027 Multi-family mortgage: Illinois 461 — — 461 278,776 279,237 Other — — — — 340,633 340,633 Nonresidential real estate — 270 — 270 152,172 152,442 Land — — — — 172 172 Commercial loans: Regional commercial banking — — — — 39,574 39,574 Health care — — — — 85,343 85,343 Direct commercial lessor — — — — 62,489 62,489 Commercial leases: Investment-rated commercial leases 498 — — 498 165,711 166,209 Other commercial leases — — — — 133,185 133,185 Consumer 39 3 — 42 1,497 1,539 $ 2,774 $ 919 $ 1,247 $ 4,940 $ 1,326,254 $ 1,331,194 Troubled Debt Restructurings The Company evaluates loan extensions or modifications in accordance with FASB ASC 310–40 with respect to the classification of the loan as a TDR. In general, if the Company grants a loan extension or modification to a borrower for other than an insignificant period of time that includes a below–market interest rate, principal forgiveness, payment forbearance or other concession intended to minimize the economic loss to the Company, the loan extension or loan modification is classified as a TDR. In cases where borrowers are granted new terms that provide for a reduction of either interest or principal then due and payable, management measures any impairment on the restructured loan in the same manner as for impaired loans as noted above. The Company had no TDRs at December 31, 2019 and $17,000 of TDRs at 2018 , with no specific valuation reserves allocated at December 31, 2018 . The Company had no outstanding commitments to borrowers whose loans are classified as TDRs at December 31, 2018 . During the years ending December 31, 2019 and 2018 , there were no loans modified and classified as TDRs. During the year ending December 31, 2018 , there were no loans that subsequently defaulted within twelve months of their modification. A loan is considered to be in payment default once it is 90 days contractually past due under the modified terms. 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 debt in the foreseeable future without the modification. This evaluation is performed under the Company’s internal underwriting policy. Credit Quality Indicators: The Company categorizes loans into risk categories based on relevant information about the ability of borrowers to service their debt, including current financial information, historical payment experience, credit documentation, public information, and current economic trends, among other factors. The Company analyzes loans individually by classifying the loans based on credit risk. This analysis includes non-homogeneous loans, such as commercial and commercial real estate loans. This analysis is performed on a monthly basis. The Company uses the following definitions for risk ratings: Special Mention. A Special Mention asset has potential weaknesses that deserve management’s close attention. If left uncorrected, these potential weaknesses may result in deterioration of the repayment prospects for the asset or in the institution’s credit position at some future date. Special Mention assets are not adversely classified and do not expose an institution to sufficient risk to warrant adverse classification. Substandard. Loans categorized as substandard continue to accrue interest, but exhibit a well-defined weakness or weaknesses that may jeopardize the liquidation of the debt. The loans continue to accrue interest because they are well secured and collection of principal and interest is expected within a reasonable time. The risk rating guidance published by the Office of the Comptroller of the Currency clarifies that a loan with a well-defined weakness does not have to present a probability of default for the loan to be rated Substandard, and that an individual loan’s loss potential does not have to be distinct for the loan to be rated Substandard. Nonaccrual. An asset classified Nonaccrual has all the weaknesses inherent in one classified 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. Loans not meeting the criteria above that are analyzed individually as part of the above described process are considered “Pass” rated loans. As of December 31, 2019 , and based on the most recent analysis performed, the risk category of loans by class of loans is as follows: Pass Special Mention Substandard Nonaccrual Total One-to-four family residential real estate loans: Owner occupied $ 43,908 $ 36 $ 533 $ 512 $ 44,989 Non-owner occupied 10,696 30 35 — 10,761 Multi-family mortgage: Illinois 247,757 — 206 — 247,963 Other 315,787 — — — 315,787 Nonresidential real estate 134,134 162 90 288 134,674 Commercial loans: Regional commercial banking 24,853 — — — 24,853 Health care 62,084 8,346 — — 70,430 Direct commercial lessor 50,431 — — — 50,431 Commercial leases: Investment-rated commercial leases 133,332 507 — — 133,839 Other commercial leases 137,893 761 136 — 138,790 Consumer 2,153 5 53 — 2,211 $ 1,163,028 $ 9,847 $ 1,053 $ 800 $ 1,174,728 As of December 31, 2018 , and based on the most recent analysis performed, the risk category of loans by class of loans is as follows: Pass Special Mention Substandard Nonaccrual Total One-to-four family residential real estate loans: Owner occupied $ 55,353 $ 495 $ 328 $ 1,168 $ 57,344 Non-owner occupied 12,911 — 37 79 13,027 Multi-family mortgage: Illinois 279,021 — 216 — 279,237 Other 340,633 — — — 340,633 Nonresidential real estate 151,793 281 98 270 152,442 Land 172 — — — 172 Commercial loans: Regional commercial banking 34,764 4,810 — — 39,574 Health care 85,001 — 342 — 85,343 Direct commercial lessor 62,489 — — — 62,489 Commercial leases: Investment-rated commercial leases 165,508 701 — — 166,209 Other commercial leases 133,185 — — — 133,185 Consumer 1,529 3 7 — 1,539 $ 1,322,359 $ 6,290 $ 1,028 $ 1,517 $ 1,331,194

Other Real Estate (Notes)

Other Real Estate (Notes)	12 Months Ended
	Dec. 31, 2019
Other Real Estate Owned [Abstract]
Other Real Estate Owned	Real estate that is acquired through foreclosure or a deed in lieu of foreclosure is classified as OREO until it is sold. When real estate is acquired through foreclosure or by deed in lieu of foreclosure, it is recorded at its fair value, less the estimated costs of disposal. If the fair value of the property is less than the loan balance, the difference is charged against the allowance for loan losses. The following represents the roll forward of OREO and the composition of OREO properties. At and For the Years Ended December 31, 2019 2018 Beginning balance $ 1,226 $ 2,351 New foreclosed properties 186 1,482 Valuation adjustments (38 ) (27 ) Sales (1,188 ) (2,580 ) Ending balance $ 186 $ 1,226 December 31, 2019 December 31, 2018 Balance Valuation Allowance Net OREO Balance Balance Valuation Allowance Net OREO Balance One–to–four family residential $ 186 $ — $ 186 $ 875 $ — $ 875 Multi-family mortgage — — — 276 — 276 Nonresidential real estate — — — 74 — 74 Land — — — 24 (23 ) 1 $ 186 $ — $ 186 $ 1,249 $ (23 ) $ 1,226 Activity in the valuation allowance is as follows: At and For the Years Ended December 31, 2019 2018 Beginning of year $ 23 $ 305 Additions charged to expense 38 27 Reductions from sales of other real estate owned (61 ) (309 ) End of year $ — $ 23 At December 31, 2019 and 2018 , the balance of OREO includes no foreclosed residential real estate properties recorded as a result of obtaining physical possession of the property without title. At December 31, 2019 and 2018 , the recorded investment of consumer mortgage loans secured by residential real estate properties for which formal foreclosure proceedings were in process was $237,000 and $349,000 , respectively.

Premises and Equipment (Notes)

Premises and Equipment (Notes)	12 Months Ended
	Dec. 31, 2019
Property, Plant, Equipment And Leases [Abstract]
Premises and Equipment	Year-end premises and equipment are as follows: December 31, 2019 2018 Land and land improvements $ 11,918 $ 12,359 Buildings and improvements 30,585 30,602 Furniture and equipment 9,454 10,039 Computer equipment 4,326 4,232 56,283 57,232 Accumulated depreciation (31,937 ) (32,027 ) $ 24,346 $ 25,205 Depreciation of premises and equipment was $1.6 million and $1.5 million for the years ended December 31, 2019 and 2018 , respectively. In December 2017, we agreed to a letter of intent to sell our corporate office building located at 60 North Frontage Road, Burr Ridge, Illinois. The asset was recorded in our financial statements at December 31, 2017 as premises held-for-sale at a net cost of $5.7 million. On April 23, 2018, the Bank sold its office building. A net gain of $93,000 was recorded in the second quarter of 2018 in connection with the sale.

Leases (Notes)

Leases (Notes)	12 Months Ended
	Dec. 31, 2019
Leases [Abstract]
Lessee, Operating Leases [Text Block]	Future minimum payments under non-cancellable operating leases with terms longer than 12 months, are disclosed below at December 31, 2019 . Future minimum payments on shorter term lease are excluded as the amounts are insignificant. Twelve months ended December 31, 2020 $ 906 2021 925 2022 965 2023 950 2024 500 Thereafter 2,724 Total future minimum operating lease payments 6,970 Amounts representing interest (1,124 ) Present value of net future minimum operating lease payments $ 5,846

Deposits (Notes)

Deposits (Notes)	12 Months Ended
	Dec. 31, 2019
Deposits [Abstract]
Deposits	Composition of deposits is as follows: December 31, 2019 2018 Noninterest-bearing demand deposits $ 210,762 $ 230,041 Interest-bearing NOW accounts 273,168 275,830 Money market accounts 245,610 255,951 Savings deposits 153,183 152,334 Certificates of deposit 402,034 438,328 $ 1,284,757 $ 1,352,484 Time deposits that meet or exceed the FDIC Insurance limit of $250,000 were $89.3 million and $81.5 million at December 31, 2019 and 2018 , respectively. Certificates of deposits include wholesale certificates totaling $65.1 million and $106.3 million at December 31, 2019 and 2018 , respectively. Of those certificates, $21.9 million and $69.9 million are brokered at December 31, 2019 and 2018 , respectively. Scheduled maturities of certificates of deposit for the next five years are as follows: 2020 $ 335,937 2021 48,930 2022 13,335 2023 1,645 2024 2,187 $ 402,034

Borrowings

Borrowings	12 Months Ended
	Dec. 31, 2019
Debt Disclosure [Abstract]
Borrowings	end, advances from the FHLB were as follows: December 31, 2019 2018 Contractual Rate Amount Contractual Rate Amount Fixed-rate advance from FHLB, due within 1 year — % $ — 2.51 % $ 20,000 The Company maintains a collateral pledge agreement covering secured advances whereby the Company has agreed to keep on hand, free of all other pledges, liens, and encumbrances, specifically identified whole first mortgages on improved residential property not more than 90-days delinquent to secure advances from the FHLB. All of the Bank’s FHLB common stock is pledged as additional collateral for these advances. At December 31, 2019 , $32.5 million and $406.0 million of first mortgage and multi-family mortgage loans, respectively, collateralized potential advances. At December 31, 2019 , we had the ability to borrow an additional $367.7 million under our credit facilities with the FHLB. The Company also had available pre-approved overnight federal funds borrowing. At December 31, 2019 and 2018 , there was no outstanding balance on these lines. Securities sold under agreements to repurchase are shown below. Overnight and Continuous Up to 30 days 30 - 90 days Greater Than 90 days Total December 31, 2019 Repurchase agreements and repurchase-to-maturity transactions $ 61 $ — $ — $ — $ 61 Gross amount of recognized liabilities for repurchase agreements in Statement of Financial Condition $ 61 December 31, 2018 Repurchase agreements and repurchase-to-maturity transactions $ 1,049 $ — $ — $ — $ 1,049 Gross amount of recognized liabilities for repurchase agreements in Statement of Financial Condition $ 1,049 Securities sold under agreements to repurchase were secured by mortgage-backed securities with a carrying amount of $2.0 million and $2.7 million at December 31, 2019 and 2018 , respectively. As the securities’ values fluctuate due to market conditions, the Company has no control over the market value. The Company is obligated to promptly transfer additional securities if the market value of the securities falls below the repurchase price, per the agreement.

Income Taxes (Notes)

Income Taxes (Notes)	12 Months Ended
	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Income Taxes	e tax expense is as follows: For the years ended 2019 2018 Current expense $ 1,863 $ 378 Deferred expense 2,362 6,328 Total income tax expense $ 4,225 $ 6,706 A reconciliation of the provision for income taxes computed at the statutory federal corporate tax rate of 21% for 2019 and 2018 , to the income tax expense in the consolidated statements of operations follows: For the years ended 2019 2018 Expense computed at the statutory federal tax rate $ 3,339 $ 5,470 State taxes and other, net 915 1,564 Bank-owned life insurance (29 ) (328 ) $ 4,225 $ 6,706 Effective income tax rate 26.57 % 25.74 % Retained earnings at December 31, 2019 and 2018 include $14.9 million for which no deferred federal income tax liability has been recorded. This amount represents an allocation of income to bad debt deductions for tax purposes alone. The net deferred tax asset is as follows: December 31, 2019 2018 Gross deferred tax assets Allowance for loan losses $ 2,043 $ 2,279 Alternative minimum tax, general business credit and net operating loss carryforwards 4,452 6,669 Lease liability 1,565 — Tax deductible goodwill and core deposit intangible 314 561 Other 741 1,256 9,115 10,765 Gross deferred tax liabilities Net deferred loan origination costs (1,013 ) (1,186 ) Purchase accounting adjustments (1,623 ) (1,673 ) Right of use asset (1,565 ) — Other (958 ) (649 ) Unrealized gain on securities (83 ) (1,022 ) (5,242 ) (4,530 ) $ 3,873 $ 6,235 As of December 31, 2019 and 2018 , the Company’s net deferred tax asset (“DTA”) was $3.9 million and $6.2 million , respectively. A DTA valuation allowance is required under ASC 740 when the realization of a DTA is assessed and the assessment indicates that it is “more likely than not” ( i.e., more than 50% likely) that all or a portion of the DTA will not be realized. All available evidence, both positive and negative must be considered to determine whether, based on the weight of that evidence, a valuation allowance against the net DTA is required. Objectively verifiable evidence is assigned greater weight than evidence that is not objectively verifiable. The valuation allowance is analyzed quarterly for changes affecting the DTA. The Company’s ability to realize the DTA is dependent upon the generation of future taxable income during the periods in which the tax attributes underlying the DTA become deductible. The amount of the DTA that will ultimately be realized will be impacted by the Company’s future taxable income, any changes to the many variables that could impact future taxable income and the then applicable corporate tax rate. As of December 31, 2019 and 2018 , management determined that it is more likely than not that the Company will be able to utilize the entire DTA. At December 31, 2019 , the Company had a federal net operating loss carryforward of $7.3 million relating to its acquisition of Downers Grove National Bank, which is subject to utilization limitations under Section 382 of the Internal Revenue Code, and will begin to expire in 2030, and $225,000 of alternative minimum tax credit carryforward that does not expire and is subject to utilization limitations under Section 382 of the Internal Revenue Code. At December 31, 2019 , the Company had a state net operating loss carryforward for the State of Illinois of $50.1 million , which will begin to expire in 2023. Unrecognized Tax Benefits A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows: December 31, 2019 2018 Beginning of year $ 198 $ 129 Additions based on tax positions related to the current year 62 85 Additions for tax positions of prior years — 4 Reductions due to the statute of limitations and reductions for tax positions of prior years (16 ) (20 ) End of year $ 244 $ 198 The Company does not expect the total amount of unrecognized tax benefits to significantly increase or decrease in the next twelve months. The Company recognizes interest and/or penalties related to income tax matters in income tax expense. At December 31, 2019 and 2018 , the Company has immaterial amounts accrued for potential interest and penalties. The Company and its subsidiary are subject to U.S. federal income tax as well as income tax of the various states where the Company does business. The Company is no longer subject to examination by the federal taxing authorities for years before 2016 and the Illinois taxing authorities for years before 2016.

Regulatory Matters (Notes)

Regulatory Matters (Notes)	12 Months Ended
	Dec. 31, 2019
Banking and Thrift [Abstract]
Regulatory Matters	REGULATORY MATTERS The Bank is subject to regulatory capital requirements administered by the federal banking agencies. The capital adequacy guidelines and prompt corrective action regulations, involve the quantitative measurement of assets, liabilities, and certain off-balance-sheet items calculated under regulatory accounting practices. Capital amounts and classifications are also subject to qualitative judgments by regulators. The failure to meet minimum capital requirements can result in regulatory actions. The final rules implementing Basel Committee on Banking Supervision's capital guidelines for U.S. banks (Basel III rules) became effective in 2015. The net unrealized gain or loss on available-for-sale securities is not included in computing regulatory capital. In addition, as a result of the legislation, the federal banking agencies developed a “Community Bank Leverage Ratio” (the ratio of a bank’s tangible equity capital to average total consolidated assets) for financial institutions with assets of less than $10 billion. A “qualifying community bank” that exceeds this ratio will be deemed to be in compliance with all other capital and leverage requirements, including the capital requirements to be considered “well capitalized” under Prompt Corrective Action statutes. The federal banking agencies may consider a financial institution’s risk profile when evaluating whether it qualifies as a community bank for purposes of the capital ratio requirement. The federal banking agencies must set the minimum capital for the new Community Bank Leverage Ratio at not less than 8% and not more than 10%, and have established 9% as the minimum capital level, effective March 31, 2020. A financial institution can elect to be subject to this new definition. Prompt corrective action regulations provide five classifications: well-capitalized, adequately capitalized, undercapitalized, significantly undercapitalized, and critically undercapitalized, although these terms are not used to represent overall financial condition. If only adequately capitalized, regulatory approval is required to accept brokered deposits. If undercapitalized, capital distributions are limited, as is asset growth and expansion, and capital restoration plans are required. The minimum capital ratios set forth in the Regulatory Capital Plans will be increased and other minimum capital requirements will be established if and as necessary. In accordance with the Regulatory Capital Plans, the Bank will not pursue any acquisition or growth opportunity, declare any dividend or conduct any stock repurchase that would cause the Bank's total risk-based capital ratio and/or its Tier 1 leverage ratio to fall below the established minimum capital levels or the capital levels required for capital adequacy plus the CCB. The minimum CCB is 2.5%. As of December 31, 2019 , the Bank was well-capitalized, with all capital ratios exceeding the well-capitalized requirement. There are no conditions or events that management believes have changed the Bank’s prompt corrective action capitalization category. The Bank is subject to regulatory restrictions on the amount of dividends it may declare and pay to the Company without prior regulatory approval, and to regulatory notification requirements for dividends that do not require prior regulatory approval. Actual and required capital amounts and ratios for the Bank were: Actual Required for Capital Adequacy Purposes To be Well-Capitalized under Prompt Corrective Action Provisions Amount Ratio Amount Ratio Amount Ratio December 31, 2019 Total capital (to risk-weighted assets) $ 170,203 16.38 % $ 83,130 8.00 % $ 103,913 10.00 % Tier 1 (core) capital (to risk-weighted assets) 162,455 15.63 62,348 6.00 83,130 8.00 Common Tier 1 (CET1) 162,455 15.63 46,761 4.50 67,543 6.50 Tier 1 (core) capital (to adjusted average total assets) 162,455 10.89 59,666 4.00 74,583 5.00 December 31, 2018 Total capital (to risk-weighted assets) 178,664 15.30 93,430 8.00 $ 116,787 10.00 % Tier 1 (core) capital (to risk-weighted assets) 170,194 14.57 70,072 6.00 93,430 8.00 Common Tier 1 (CET1) 170,194 14.57 52,554 4.50 75,912 6.50 Tier 1 (core) capital (to adjusted average total assets) 170,194 11.03 61,721 4.00 77,151 5.00

Employee Benefit Plans (Notes)

Employee Benefit Plans (Notes)	12 Months Ended
	Dec. 31, 2019
Retirement Benefits [Abstract]
Employee Benefit Plans	EMPLOYEE BENEFIT PLANS Employee Stock Ownership Plan ("ESOP") . On March 29, 2017, the ESOP was terminated and the ESOP repaid all amounts owing under the ESOP’s Term Loan Agreement with the Company (the “Share Acquisition Loan”). The ESOP repaid the Share Acquisition Loan by transferring 753,490 unallocated shares of the Company’s common stock to the Company in exchange for the full satisfaction of the Share Acquisition Loan, using the valuation method provided for in the ESOP. A total of 78,362 unallocated shares remained in the ESOP after the Share Acquisition Loan was repaid, and these shares were released and were allocated to the accounts of eligible ESOP participants who were actively employed by the Bank as of March 29, 2017, based on their account balances. These transactions resulted in the recording of one-time, non-cash, non-tax deductible equity compensation expense of $1.1 million in the first quarter of 2017. The Share Acquisition Loan had no outstanding principal balance at December 31, 2019 and 2018 . The Company made the Share Acquisition Loan to the ESOP in the original principal amount of $19.6 million in connection with the Company’s mutual to stock conversion in 2005. The proceeds of the Share Acquisition Loan were used by the ESOP to purchase 1,957,300 shares of the Company’s common stock issued in the subscription offering at a price of $10.00 per share. The Share Acquisition Loan was secured by a pledge of the acquired shares and the ESOP made annual loan payments with funds it received from the Bank’s discretionary contributions to the ESOP in subsequent years and dividends it received on unallocated shares. As loan payments were made, the Company recorded compensation expense based on the allocation of shares released. Contributions to the ESOP were zero for the years ended December 31, 2019 and 2018 . Expense related to the ESOP was zero for the years ended December 31, 2019 and 2018 . Shares held by the ESOP were as follows: December 31, 2018 Allocated to participants 885,896 Distributed to participants (885,896 ) Total ESOP shares — Profit Sharing Plan/401(k) Plan . The Company has a defined contribution plan (“profit sharing plan”) covering all of its eligible employees. Employees are eligible to participate in the profit sharing plan after attainment of age 21 and completion of one year of service. The Company provides a match of $ 0.50 on each $1.00 of contribution up to 6% of eligible compensation beginning April 1, 2007. The Company may also contribute an additional amount annually at the discretion of the Board of Directors. Contributions totaling $320,000 and $506,000 were made for the years ended December 31, 2019 and 2018 , respectively.

Equity Incentive Plans (Notes)

Equity Incentive Plans (Notes)	12 Months Ended
	Dec. 31, 2019
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Equity Incentive Plans	EQUITY INCENTIVE PLANS On June 27, 2006, the Company’s stockholders approved the BankFinancial Corporation 2006 Equity Incentive Plan, which authorized the Human Resources Committee of the Board of Directors of the Company to grant a variety of cash- and equity-based incentive awards, including stock options, stock appreciation rights, restricted stock, performance shares and other incentive awards, to employees and directors aggregating up to 3,425,275 shares of the Company’s common stock. The Plan provided that no awards may be granted under the Plan after the ten -year anniversary of the Effective Date. Consequently, no further awards will be granted under this Plan. Restricted stock awards generally vested annually over varying periods from three to five years and vesting was subject to acceleration in certain circumstances. All remaining restricted stock awards vested or were forfeited during 2018. The Company recognized zero expense relating to the grant of shares of restricted stock during the years ended December 31, 2019 and 2018 . No further shares of restricted stock will be granted. Restricted Stock Number of Shares Weighted Average Fair Value at Grant Date Weighted Average Term to Vest (in years) Aggregate Intrinsic Value (1) Shares outstanding at January 1, 2018 940 $ 8.14 0.00 $ 14 Shares granted — — Shares vested (694 ) 8.14 Shares forfeited (246 ) 8.14 Shares outstanding at December 31, 2018 — $ — 0.00 $ — (1) Restricted stock aggregate intrinsic value represents the number of shares of restricted stock multiplied by the market price of the common stock underlying the outstanding shares on the date shown.

Loan Commitments and Other Off-

Loan Commitments and Other Off-Balance Sheet Activities (Notes)	12 Months Ended
	Dec. 31, 2019
Commitments and Contingencies Disclosure [Abstract]
Loan Commitments and Other Off-Balance Sheet Activities	The Company is party to various financial instruments with off-balance-sheet risk. The Company uses these financial instruments in the normal course of business to meet the financing needs of customers and to effectively manage exposure to interest rate risk. These financial instruments include commitments to extend credit, standby letters of credit, unused lines of credit, and commitments to sell loans. When viewed in terms of the maximum exposure, those instruments may involve, to varying degrees, elements of credit and interest rate risk in excess of the amount recognized in the consolidated statements of financial condition. Credit risk is the possibility that a counterparty to a financial instrument will be unable to perform its contractual obligations. Interest rate risk is the possibility that, due to changes in economic conditions, the Company’s net interest income will be adversely affected. The following is a summary of the contractual or notional amount of each significant class of off-balance-sheet financial instruments outstanding. The Company’s exposure to credit loss in the event of nonperformance by the counterparty for commitments to extend credit, standby letters of credit, and unused lines of credit is represented by the contractual notional amount of these instruments. The contractual or notional amounts are as follows: December 31, 2019 2018 Financial instruments wherein contractual amounts represent credit risk Commitments to extend credit $ 19,737 $ 75,180 Standby letters of credit 6,119 5,965 Unused lines of credit 149,771 152,554 Commitments to extend credit are generally made for periods of 60 days or less. The fixed-rate loans commitment totaled $11.9 million with interest rates ranging from 3.15% to 5.25% and maturities ranging from 1 to 30 years. Since many of the commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily represent future cash requirements. The Company evaluates each customer’s creditworthiness on a case-by-case basis. The amount of collateral obtained, if it is deemed necessary by the Company upon extension of credit, is based on management’s credit evaluation of the customers.

Fair Value (Notes)

Fair Value (Notes)	12 Months Ended
	Dec. 31, 2019
Fair Value Disclosures [Abstract]
Fair Value	FAIR VALUE Fair value is the exchange price that would be received for an asset or paid to transfer a liability (exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. There are three levels of inputs that may be used to measure fair values: • Level 1 – Quoted prices (unadjusted) for identical assets or liabilities in active markets that the entity has the ability to access as of the measurement date. • Level 2 – Significant other observable inputs other than Level 1 prices such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data. • Level 3 – Significant unobservable inputs that reflect a company’s own assumptions about the assumptions that market participants would use in pricing an asset or liability. The Company used the following methods and significant assumptions to estimate the fair value of each type of financial instrument: Securities : The fair values of debt securities are generally determined by 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). Other investments : Other investments includes our investments in equity securities without readily determinable fair values. Equity investments without readily determinable fair values, includes our Visa Class B shares, which are categorized as Level 3. Our Visa Class B ownership includes shares acquired at no cost from our prior participation in Visa’s network while Visa operated as a cooperative. Impaired Loans: The fair value of impaired loans with specific allocations of the allowance for loan losses is generally 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 for similar loans and collateral underlying such loans. 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 in accordance with the allowance policy. Other Real Estate Owned: 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. These assets are subsequently accounted for at lower of cost or fair value less estimated costs to sell. Fair value is commonly based on recent real estate appraisals which are updated no less frequently than annually. These appraisals may utilize a single valuation approach or a combination of approaches including comparable sales and the income approach with data from comparable properties. Adjustments are routinely made in the appraisal process by the independent appraisers to adjust for differences between the comparable sales and income data available. Real estate owned properties are evaluated on a quarterly basis for additional impairment and adjusted accordingly. The following table sets forth the Company’s financial assets that were accounted for at fair value and are classified in their entirety based on the lowest level of input that is significant to the fair value measurement. Fair Value Measurements Using Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Fair Value December 31, 2019 Securities: Certificates of deposit $ — $ 48,666 $ — $ 48,666 Municipal securities — 513 — 513 Mortgage-backed securities – residential — 8,037 — 8,037 Collateralized mortgage obligations – residential — 2,977 — 2,977 $ — $ 60,193 $ — $ 60,193 December 31, 2018 Securities: Certificates of deposit $ — $ 73,507 $ — $ 73,507 Municipal securities — 509 — 509 Mortgage-backed securities - residential — 10,478 — 10,478 Collateralized mortgage obligations – residential — 3,685 — 3,685 $ — $ 88,179 $ — $ 88,179 The following table sets forth the Company’s assets that were measured at fair value on a non-recurring basis: Fair Value Measurement Using Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Fair Value December 31, 2018 Impaired loans - Nonresidential real estate $ — $ — $ 243 $ 243 Other real estate owned - Land $ — $ — $ 1 $ 1 Other investments (1) $ — $ — $ 3,427 $ 3,427 (1) See Note 1 for additional disclosures resulting from the Company's adoption of ASU 2016-01. At December 31, 2019 there were no impaired loans that were measured for impairment using the fair value of the collateral for collateral–dependent loans and which had specific valuation allowances. At December 31, 2018 there was one nonresidential impaired loan with a carrying value of $270,000 and a valuation allowance of $27,000 that was measured for impairment using the fair value of the collateral for collateral–dependent loans and which had a specific valuation allowance. At December 31, 2019 there were no OREO properties with valuation allowances, compared to OREO land carried at the lower of cost or fair value less costs to sell, with a carrying value of $24,000 less a valuation allowance of $23,000 , or $1,000 , at December 31, 2018 . The following table presents quantitative information, based on certain empirical data with respect to Level 3 fair value measurements for financial instruments measured at fair value on a non-recurring basis at December 31, 2018 : Fair Value Valuation Technique Unobservable Input Range (Weighted Average) Other real estate owned - Land $ 1 Sales comparison Discount applied to valuation 12.3% The carrying amount and estimated fair value of financial instruments are as follows: Fair Value Measurements at December 31, 2019 Using: Carrying Amount Level 1 Level 2 Level 3 Total Financial assets Cash and cash equivalents $ 190,325 $ 9,785 $ 180,540 $ — $ 190,325 Securities 60,193 — 60,193 — 60,193 Loans receivable, net of allowance for loan losses 1,168,008 — — 1,177,459 1,177,459 FHLB and FRB stock 7,490 — — — N/A Accrued interest receivable 4,563 — 252 4,311 4,563 Financial liabilities Certificates of deposit 402,034 — 402,914 — 402,914 Borrowings 61 — 61 — 61 Fair Value Measurements at December 31, 2018 Using: Carrying Amount Level 1 Level 2 Level 3 Total Financial assets Cash and cash equivalents $ 98,204 $ 13,805 $ 84,399 $ — $ 98,204 Securities available-for-sale 88,179 — 88,179 — 88,179 Loans receivable, net of allowance for loan losses 1,323,793 — — 1,315,855 1,315,855 FHLB and FRB stock 8,026 — — — N/A Accrued interest receivable 4,952 — 249 4,703 4,952 Financial liabilities Certificates of deposit 438,328 — 436,598 — 436,598 Borrowings 21,049 — 21,050 — 21,050 Loans : The exit price observations are obtained from an independent third-party using its proprietary valuation model and methodology and may not reflect actual or prospective market valuations. The valuation is based on the probability of default, loss given default, recovery delay, prepayment, and discount rate assumptions. While the above estimates are based on management’s judgment of the most appropriate factors, as of the balance sheet date, there is no assurance that the estimated fair values would have been realized if the assets were disposed of or the liabilities settled at that date, since market values may differ depending on the various circumstances. The estimated fair values would also not apply to subsequent dates. In addition, other assets and liabilities that are not financial instruments, such as premises and equipment, are not included in the above disclosures.

Revenue From Contracts With Cus

Revenue From Contracts With Customers	12 Months Ended
	Dec. 31, 2019
Revenue from Contract with Customer [Abstract]
Revenue From Contracts With Customers	e Company's revenue from contracts with customers in the scope of ASC 606 is recognized within noninterest income. The following table presents the Company's sources of noninterest income. Items outside of the scope of the ASC 606 are noted as such. For the years ended 2019 2018 Deposit service charges and fees $ 3,844 $ 3,968 Loan servicing fees (1) 451 439 Mortgage brokerage and banking fees (1) 149 257 Gain on sale of equity securities (1) 295 3,558 Unrealized gain on equity securities (1) — 3,427 Gain on sale of premises held-for-sale — 93 Loss on disposal of other assets (44 ) — Trust and insurance commissions and annuities income 844 937 Earnings on bank-owned life insurance (1) 136 174 Bank-owned life insurance death benefit (1) — 1,389 Other (1) 497 635 Total noninterest income $ 6,172 $ 14,877 (1) Not within the scope of ASC 606 A description of the Company's revenue streams accounted for under ASC 606 follows: Deposit service charges and fees: The Company earns fees from its deposit customers based on specific types of transactions, account maintenance and overdraft services. Transaction-based fees, which include services such as ATM use fees, stop payment charges, statement rendering, and ACH fees, are recognized at the time the transaction is executed as that is the point in time the Company fulfills the customer's request. Account maintenance fees, which relate primarily to monthly maintenance, are earned over the course of a month, representing the period over which the Company satisfies the performance obligation. Overdraft fees are recognized at the point in time that the overdraft occurs. Service charges on deposits are withdrawn from the customer's account balance. Interchange income: The Company earns interchange fees from debit cardholder transactions conducted through the Visa payment network. Interchange fees from cardholder transactions represent a percentage of the underlying transaction value and are recognized daily, concurrently with the transaction processing services provided to the cardholder. Interchange income is included in deposit service charges and fees. Interchange income for the years ended December 31, 2019 and 2018 was $1.5 million . Gain on sale of premises held-for-sale: On April 23, 2018, the Bank sold its office building in Burr Ridge, Illinois. The sale was to an unrelated party and title was transferred at closing. As such, the transaction constituted a sale and a net gain was recorded in the second quarter of 2018. Trust and insurance commissions and annuities income: The Company earns trust, insurance commissions and annuities income from its contracts with trust customers to manage assets for investment, and/or to transact on their accounts. These fees are primarily earned over time as the Company provides the contracted monthly or quarterly services and are generally assessed based on a tiered scale of the market value of assets under management (AUM) at month-end. Fees that are transaction based, including trade execution services, are recognized at the point in time that the transaction is executed, i.e. , the trade date. Other related services provided include fees the Company earns, which are based on a fixed fee schedule, are recognized when the services are rendered. Gains/losses on sales of OREO and other assets: The Company records a gain or loss from the sale of OREO and other assets when control of the property transfers to the buyer, which generally occurs at the time of an executed deed. When the Company finances the sale of OREO to the buyer, the Company assesses whether the buyer is committed to perform their obligations under the contract and whether collectability of the transaction price is probable. Once these criteria are met, the OREO asset is derecognized and the gain or loss on sale is recorded upon the transfer of control of the property to the buyer. In determining the gain or loss on the sale, the Company adjusts the transaction price and related gain (loss) on sale if a significant financing component is present. OREO sales for the years ended December 31, 2019 and 2018 were not financed by the Company.

Company Only Condensed Financia

Company Only Condensed Financial Information (Notes)	12 Months Ended
	Dec. 31, 2019
Condensed Financial Information Disclosure [Abstract]
Company Only Condensed Financial Information	Condensed financial information of BankFinancial Corporation as of December 31, 2019 and 2018 and for the two years then ended are as follows: Condensed Statements of Financial Condition December 31, 2019 2018 Assets Cash in subsidiary $ 6,864 $ 11,227 Investment in subsidiary 164,847 173,253 Deferred tax asset 558 1,999 Other assets 2,115 3,317 $ 174,384 $ 189,796 Liabilities and Stockholders' Equity Accrued expenses and other liabilities $ 12 $ 2,646 Total stockholders’ equity 174,372 187,150 $ 174,384 $ 189,796 Condensed Statements of Operations For the years ended 2019 2018 Dividends from subsidiary $ 21,200 $ 36,044 Other expense 1,600 1,573 Income before income tax and undistributed subsidiary excess distributions 19,600 34,471 Income tax benefit (433 ) (398 ) Income before equity in undistributed subsidiary excess distributions 20,033 34,869 Equity in undistributed subsidiary excess distributions (8,361 ) (15,527 ) Net income $ 11,672 $ 19,342 Condensed Statements of Cash Flows For the years ended 2019 2018 Cash flows from operating activities Net income $ 11,672 $ 19,342 Adjustments: Equity in undistributed subsidiary excess distributions 8,361 15,527 Change in other assets 2,643 67 Change in accrued expenses and other liabilities (2,634 ) (369 ) Net cash from operating activities 20,042 34,567 Cash flows from financing activities Repurchase and retirement of common stock (18,139 ) (23,284 ) Cash dividends paid on common stock (6,266 ) (6,449 ) Net cash used in financing activities (24,405 ) (29,733 ) Net change in cash in subsidiary (4,363 ) 4,834 Beginning cash in subsidiary 11,227 6,393 Ending cash in subsidiary $ 6,864 $ 11,227

Selected Quarterly Financial Da

Selected Quarterly Financial Data (unaudited) (Notes)	12 Months Ended
	Dec. 31, 2019
Quarterly Financial Information Disclosure [Abstract]
Selected Quarterly Financial Data (unaudited)	any recorded net income of $3.4 million , or $0.22 per common share, for the fourth quarter of 2019 . The Company’s net interest income before provision for loan losses was $12.6 million due to the decline in the loan portfolio and lower market yields. The Company’s fourth quarter 2019 noninterest expense includes a $24,000 net recovery of non-performing loans expenses due to collections of previous recognized expenses. For the year ended December 31, 2018 First Second Third Fourth Interest income $ 14,748 $ 15,020 $ 15,373 $ 16,146 Interest expense 1,727 2,039 2,408 3,043 Net interest income 13,021 12,981 12,965 13,103 Provision for (recovery of) loan losses (258 ) 23 (23 ) 403 Net interest income 13,279 12,958 12,988 12,700 Noninterest income 1,539 3,094 1,570 8,674 Noninterest expense 9,959 10,215 9,425 11,155 Income before income taxes 4,859 5,837 5,133 10,219 Income tax expense 1,300 1,207 1,396 2,803 Net income $ 3,559 $ 4,630 $ 3,737 $ 7,416 Basic and diluted earnings per common share $ 0.20 $ 0.26 $ 0.22 $ 0.44 The Company recorded net income of $7.4 million , or $0.44 per common share, for the fourth quarter of 2018. The Company’s net interest income before provision for loan losses was $13.1 million due to stronger loan originations and improved asset quality. which was offset by increased interest-bearing liabilities at higher cost of funds. The Company’s fourth quarter 2018 operating results include $3.6 million of gain on sale of Visa B stock common shares as well as $3.4 million in unrealized gain on Visa B common shares. Compensation expense includes $1.0 million in accrued expense, related to certain contract termination and severance payments.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation : BankFinancial Corporation, a Maryland corporation headquartered in Burr Ridge, Illinois, is the owner of all of the issued and outstanding capital stock of BankFinancial, National Association (the “Bank”).
Principles of Consolidation	Principles of Consolidation : The consolidated financial statements include the accounts of and transactions of BankFinancial Corporation, the Bank, and the Bank’s wholly-owned subsidiaries, Financial Assurance Services, Inc. and BFIN Asset Recovery Company, LLC (formerly BF Asset Recovery Corporation) (collectively, “the Company”) and have been prepared in conformity with accounting principles generally accepted in the United States of America (“US GAAP”). All significant intercompany accounts and transactions have been eliminated.
Use of Estimates	Use of Estimates : The preparation of the consolidation financial statements in conformity with US GAAP requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Although these estimates and assumptions are based on the best available information, actual information, actual results could differ from those estimates.
Cash Flows	Interest-bearing Deposits in Other Financial Institutions : Interest-bearing deposits in other financial institutions maturing in less than 90 days are carried at cost. Cash Flows : Cash and cash equivalents include cash, deposits with other financial institutions maturing in less than 90 days, and daily federal funds sold. Net cash flows are reported for customer loan and deposit transactions, interest bearing deposits in other financial institutions, borrowings, and advance payments by borrowers for taxes and insurance.
Securities	Securities : Debt securities are classified as available-for-sale when they might be sold before maturity. Securities available-for-sale are carried at fair value, with unrealized holding gains and losses reported in other comprehensive income (loss), net of tax. Interest income includes amortization of purchase premium or discount. Premiums and discounts on securities are amortized on the level-yield method without anticipating prepayments, except for mortgage-backed securities where prepayments are anticipated. Gains and losses on sales are based on the amortized cost of the security sold. Declines in the fair value of securities below their cost that are other-than-temporary are reflected as realized losses. In determining if losses are other-than-temporary, management considers: (1) the length of time and extent that fair value has been less than cost or adjusted cost, as applicable, (2) the financial condition and near term prospects of the issuer, and (3) whether the Company has the intent to sell the debt security or it is more likely than not that the Company will be required to sell the debt security before the anticipated recovery.
Federal Home Loan Bank Stock	Federal Home Loan Bank (“FHLB”) Stock : The Bank is a member of the FHLB system. Members are required to own a certain amount of stock based on the level of borrowings and other factors, and may invest in additional amounts. FHLB stock is carried at cost, classified as a restricted security, and periodically evaluated for impairment based on ultimate recovery of par value. Both cash and stock dividends are reported as income.
Loans And Loan Income	Loans and Loan Income : 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 the allowance for loan losses, premiums and discounts on loans purchased, and net deferred loan costs. Interest income on loans is recognized in income over the term of the loan based on the amount of principal outstanding. Premiums and discounts associated with loans purchased are amortized over the contractual term of the loan using the level–yield method. Loan origination fees, net of certain direct origination costs, are deferred and recognized in interest income using the level‑yield method without anticipating prepayments. Interest income is reported on the interest method. Interest income is generally discontinued at the earlier of a loan is 90 days past due or when we do not expect to receive full payment of interest or principal. Past due status is based on the contractual terms of the loan. All interest accrued but not received for loans that have been placed on nonaccrual status is reversed against interest income. Interest received on such loans is accounted for on the cash–basis or cost–recovery method until qualifying for return to accrual status. Once a loan is placed on nonaccrual status, the borrower must generally demonstrate at least six months of payment performance before the loan is eligible to return to accrual status. Generally, the Company utilizes the “90 days delinquent, still accruing” category of loan classification when: (1) the loan is repaid in full shortly after the period end date; (2) the loan is well secured and there are no asserted or pending legal barriers to its collection; or (3) the borrower has remitted all scheduled payments and is otherwise in substantial compliance with the terms of the loan, but the processing of payments actually received or the renewal of a loan has not occurred for administrative reasons.
Impaired Loans	Impaired Loans: Impaired loans principally consist of nonaccrual loans and troubled debt restructurings (“TDRs”). A loan is considered impaired when, based on current information and events, management believes that it is probable that we will be unable to collect all amounts due (both principal and interest) according to the original contractual terms of the loan agreement. Once a loan is determined to be impaired, the amount of impairment is measured based on the loan's observable fair value, the fair value of the underlying collateral less selling costs if the loan is collateral-dependent, or the present value of expected future cash flows discounted at the loan's effective interest rate. If the measurement of the impaired loan is less than the recorded investment in the loan, the bank's allowance for the impaired collateral dependent loan under ASC 310-10-35 is based on fair value (less costs to sell), but the charge-off (the confirmed “loss”) is based on the appraised value. The remaining recorded investment in the loan after the charge-off will have a loan loss allowance for the amount by which the estimated fair value of the collateral (less costs to sell) is less than its appraised value. Impaired loans with specific reserves are reviewed quarterly for any changes that would affect the specific reserve. Any impaired loan for which a determination has been made that the economic value is permanently reduced is charged-off against the allowance for loan losses to reflect its current economic value in the period in which the determination has been made. At the time a collateral-dependent loan is initially determined to be impaired, we review the existing collateral appraisal. If the most recent appraisal is greater than a year old, a new appraisal is obtained on the underlying collateral. Appraisals are updated with a new independent appraisal at least annually and are formally reviewed by our internal appraisal department upon receipt of a new appraisal. All impaired loans and their related reserves are reviewed and updated each quarter.
Troubled Debt Restructurings	Troubled Debt Restructurings : A loan is classified as a troubled debt restructuring when a borrower is experiencing financial difficulties that leads to a restructuring of the loan, and the Company grants concessions to the borrower in the restructuring that it would not otherwise consider. These concessions may include rate reductions, principal forgiveness, extension of maturity date and other actions intended to minimize potential losses. In determining whether a debtor is experiencing financial difficulties, the Company considers if the debtor is in payment default or would be in payment default in the foreseeable future without the modification, the debtor declared or is in the process of declaring bankruptcy, there is substantial doubt that the debtor will continue as a going concern, the debtor has securities that have been or are in the process of being delisted, the debtor's entity-specific projected cash flows will not be sufficient to service any of its debt, or the debtor cannot obtain funds from sources other than the existing creditors at a market rate for debt with similar risk characteristics. In determining whether the Company has granted a concession, the Company assesses, if it does not expect to collect all amounts due, whether the current value of the collateral will satisfy the amounts owed, whether additional collateral or guarantees from the debtor will serve as adequate compensation for other terms of the restructuring, and whether the debtor otherwise has access to funds at a market rate for debt with similar risk characteristics. Periodically, the Company will restructure a note into two separate notes (A/B structure), charging off the entire B portion of the note. The A note is structured with appropriate loan-to-value and cash flow coverage ratios that provide for a high likelihood of repayment. The A note is classified as a nonperforming note until the borrower has displayed a historical payment performance for a reasonable time prior to and subsequent to the restructuring. A period of sustained repayment for at least six months generally is required to return the note to accrual status provided that management has determined that the performance is reasonably expected to continue. The A note will be classified as a restructured note (either performing or nonperforming) through the calendar year of the restructuring that the historical payment performance has been established.
Allowance for Loan Losses	Allowance for Loan Losses: The Company establishes provisions for loan losses, which are charged to the Company’s results of operations to maintain the allowance for loan losses to absorb probable incurred credit losses in the loan portfolio. In determining the level of the allowance for loan losses, the Company considers past and current loss experience, trends in classified loans, evaluations of real estate collateral, current economic conditions, volume and type of lending, adverse situations that may affect a borrower’s ability to repay a loan and the levels of nonperforming and other classified loans. The amount of the allowance is based on estimates and the ultimate losses may vary from the estimates as more information becomes available or events change. The Company provides for loan losses based on the allowance method. Accordingly, all loan losses are charged to the related allowance and all recoveries are credited to it. Additions to the allowance for loan losses are provided by charges to income based on various factors that, in our judgment, deserve current recognition in estimating probable incurred credit losses. The Company reviews the loan portfolio on an ongoing basis and makes provisions for loan losses on a quarterly basis to maintain the allowance for loan losses in accordance with US GAAP. The allowance for loan losses consists of two components: • specific allowances established for any impaired residential non-owner occupied mortgage, multi-family mortgage, nonresidential real estate, construction and land, commercial, and commercial lease loans for which the recorded investment in the loan exceeds the measured value of the loan; and • general allowances for loan losses for each loan class based on historical loan loss experience; and adjustments to historical loss experience (general allowances), maintained to cover uncertainties that affect our estimate of probable incurred credit losses for each loan class. The adjustments to historical loss experience are based on our evaluation of several factors, including levels of, and trends in, past due and classified loans; levels of, and trends in, charge–offs and recoveries; trends in volume and terms of loans, including any credit concentrations in the loan portfolio; experience and ability of lending management and other relevant staff; and national and local economic trends and conditions. The Company evaluates the allowance for loan losses based upon the combined total of the specific and general components. Generally, when the loan portfolio increases, absent other factors, the allowance for loan loss methodology results in a higher dollar amount of estimated probable incurred credit losses than would be the case without the increase. Conversely, when the loan portfolio decreases, absent other factors, the allowance for loan loss methodology generally results in a lower dollar amount of estimated probable losses than would be the case without the decrease. The loss ratio used in computing the required general loan loss reserve allowance for a given class of loan consists of (i) the actual loss ratio (measured on a weighted, rolling twelve-quarter basis), (ii) the change in credit quality within the specific loan class during the period, (iii) the actual inherent risk factor assigned to the specific loan class and (iv) the actual concentration of risk factor assigned to the specific loan class (collectively, the “Specific Loan Class Risk Factors”). The Specific Loan Class Risk Factors are weighted equally in the calculation. In addition, two additional quantitative factors, the National Economic risk factor and the Local Economic risk factor, are also components of the computation but are given different weightings in their computation due to their relative applicability to the specific loan class in the context of the effect of national and local economic conditions on their risk profile and performance.
Uncollected Interest	When a loan is on non-accrual status and the ultimate collectability of the total principal of an impaired loan is in doubt, all payments are applied to principal under the cost recovery method. Alternatively, when a loan is on non-accrual status but there is doubt concerning only the ultimate collectability of interest, contractual interest is credited to interest income only when received, under the cash basis method pursuant to the provisions of FASB ASC 310–10, as applicable. In all cases, the average balances are calculated based on the month–end balances of the financing receivables within the period reported pursuant to the provisions of FASB ASC 310–10, as applicable.
Mortgage Servicing Rights	Mortgage Servicing Rights : Mortgage 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 and gains on sales of loans are recorded in the statement of operations. 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. The valuation model incorporates assumptions that market participants would use in estimating future net servicing income, such as the servicing cost per loan, the discount rate, the escrow float rate, an inflation rate, ancillary income, prepayment speeds and default rates and losses. The Company compares the valuation model inputs and results to published industry data in order to validate the model results and assumptions. All classes of servicing assets are subsequently measured using the amortization method which requires servicing rights to be amortized into noninterest income in proportion to, and over the period of, the estimated future net servicing income of the underlying loans. Servicing assets 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 amortization and impairment of servicing assets on the statement of operations. 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 that is reported on the statement of operations as loan servicing fees 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. Late fees and ancillary fees related to loan servicing are not material.
Other Real Estate Owned	Other Real Estate Owned ("OREO") : Foreclosed assets are initially recorded at fair value less cost to sell when acquired, establishing a new cost basis. Physical possession of residential real estate property collateralizing a consumer mortgage loan occurs when the legal title is obtained upon completion of foreclosure or when the borrower conveys all interest in the property to satisfy the loan through completion of a deed in lieu of foreclosure or through a similar legal agreement. These assets are subsequently accounted for at a lower of cost or fair value less estimated cost to sell. If fair value declines subsequent to foreclosure, a valuation allowance is recorded through expense. Operating expenses, gains and losses on disposition, and changes in the valuation allowance are reported in noninterest expense as operations of other real estate owned.
Premises and Equipment	Premises and Equipment : Land is carried at cost. Premises and equipment are stated at cost less accumulated depreciation. Depreciation is included in noninterest expense and is computed on the straight-line method over the estimated useful lives of the assets. Useful lives are estimated to be 25 to 40 years for buildings and improvements that extend the life of the original building, ten to 20 years for routine building improvements, five to 15 years for furniture and equipment, two to five years for computer hardware and software and no greater than four years on automobiles. The cost of maintenance and repairs is charged to expense as incurred and significant repairs are capitalized.
Goodwill and Other Intangible Assets	Other Intangible Assets : Intangible assets acquired in a purchase business combination with definite useful lives are amortized over their estimated useful lives to their estimated residual values. Core deposit intangible assets (“CDI”), are recognized at the time of acquisition based on valuations prepared by independent third parties or other estimates of fair value. In preparing such valuations, variables such as deposit servicing costs, attrition rates, and market discount rates are considered. CDI assets are amortized to expense over their useful lives.
Bank Owned Life Insurance	Bank-Owned Life Insurance: The Company has purchased life insurance policies on certain key executives. The Company owned life insurance is recorded at the amount that can be realized under the insurance contract at the balance sheet date, which is the cash surrender value adjusted for other charges or other amounts due that are probable at settlement.
Long-Term Assets	Long-Term Assets : Premises and equipment, core deposit and other intangible assets, and other long-term assets are reviewed for impairment when events indicate that their carrying amount may not be recoverable from future undiscounted cash flows. If impaired, the assets are recorded at fair value.
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.
Income Taxes	Income Taxes : Income tax expense is the total of the current year income tax due or refundable and the change in deferred tax assets and liabilities. Under US GAAP, a deferred tax asset valuation allowance is required to be recognized if it is “more likely than not” that the deferred tax asset will not be realized. The determination of the realizability of the deferred tax assets is highly subjective and dependent upon judgment concerning management’s evaluation of both positive and negative evidence, the forecasts of future taxable income, applicable tax planning strategies, and assessments of current and future economic and business conditions. The Company considers both positive and negative evidence regarding the ultimate realizability of our deferred tax assets. Examples of positive evidence may include the existence, if any, of taxes paid in available carry-back years and the likelihood that taxable income will be generated in future periods. Examples of negative evidence may include a cumulative loss in the current year and prior two years and negative general business and economic trends. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period of the enactment date. This analysis is updated quarterly and adjusted as necessary. At December 31, 2019 , the Company had a net deferred tax asset of $3.9 million . 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, presuming that a tax examination will occur. The amount recognized is the largest amount of tax benefit that is greater than 50% likely to be realized on examination. For tax positions not meeting the "more likely than not" test, no tax benefit is recorded.
Retirement Plans	Retirement Plans : Employee 401(k) and profit sharing plan expense is the amount of matching contributions and any annual discretionary contribution made at the discretion of the Company’s Board of Directors.
Earnings (Loss) Per Common Share	Earnings per Common Share : Basic earnings per common share is net income divided by the weighted average number of common shares outstanding during the period. Diluted earnings per common share is net income divided by the weighted average number of common shares outstanding during the period plus the dilutive effect of restricted stock shares.
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 that there are such matters that will have a material effect on the financial statements as of December 31, 2019 .
Restrictions on Cash	Restrictions on Cash : The Bank is required to maintain reserve balances in cash or on deposit with the Federal Reserve Bank, based on a percentage of deposits. As December 31, 2019 and 2018 , the Bank has met the requirements. The nature of the Company’s business requires that it maintain amounts with banks and federal funds sold which, at times, may exceed federally insured limits. Management monitors these correspondent relationships and the Company has not experienced any losses in such accounts.
Fair Value of Financial Instruments	Fair Values of Financial Instruments : Fair values of financial instruments are estimated using relevant market value information and other assumptions, as more fully disclosed in a separate note. 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.
Comprehensive Income (Loss)	Comprehensive Income : Comprehensive income consists of net income and other comprehensive income (loss). Other comprehensive income (loss) includes unrealized gains and losses on securities, net of tax, which is also recognized as separate components of stockholders’ equity.
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.
Operating Segments	Operating Segments: While management monitors the revenue streams of the various products and services, operations are managed and financial performance is evaluated on a Company-wide basis. Operating results are not reviewed by senior management to make resource allocation or performance decisions. Accordingly, all of the financial service operations are considered by management to be aggregated in one reportable operating segment.
Reclassifications	Reclassifications : Certain reclassifications have been made in the prior year’s financial statements to conform to the current year’s presentation.
Recent Accounting Pronouncements	t Yet Effective Accounting Standards In June 2016, the FASB issued ASU No. 2016-13, “Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments” (“ASU 2016-13”). These amendments require the measurement of all expected credit losses for financial assets held at the reporting date based on historical experience, current conditions, and reasonable and supportable forecasts. Financial institutions and other organizations will now use forward-looking information to better inform their credit loss estimates. Many of the loss estimation techniques applied today will still be permitted, although the inputs to those techniques will change to reflect the full amount of expected credit losses. In addition, the ASU amends the accounting for credit losses on available-for-sale debt securities and purchased financial assets with credit deterioration. For SEC filers who are smaller reporting companies, ASU 2016-13 is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2022.

Earnings Per Share (Tables)

Earnings Per Share (Tables)	12 Months Ended
	Dec. 31, 2019
Earnings Per Share [Abstract]
Reconciliation of Basic and Diluted Earnings Per Share	For the years ended 2019 2018 Net income available to common stockholders $ 11,672 $ 19,342 Average common shares outstanding 15,594,883 17,434,780 Less - Unvested restricted stock shares — (435 ) Basic and diluted weighted average common shares outstanding 15,594,883 17,434,345 Basic and diluted earnings per common share $ 0.75 $ 1.11

Securities (Tables)

Securities (Tables)	12 Months Ended
	Dec. 31, 2019
Investments, Debt and Equity Securities [Abstract]
Unrealized gains and losses recognized in accumulated other comprehensive income (loss)	The fair value of securities and the related gross unrealized gains and losses recognized in accumulated other comprehensive income is as follows: Available-for-Sale Securities Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value December 31, 2019 Certificates of deposit $ 48,666 $ — $ — $ 48,666 Municipal securities 505 8 — 513 Mortgage-backed securities - residential 7,727 310 — 8,037 Collateralized mortgage obligations - residential 2,986 4 (13 ) 2,977 $ 59,884 $ 322 $ (13 ) $ 60,193 December 31, 2018 Certificates of deposit $ 73,507 $ — $ — $ 73,507 Municipal securities 509 — — 509 Mortgage-backed securities - residential 10,116 400 (38 ) 10,478 Collateralized mortgage obligations - residential 3,676 11 (2 ) 3,685 $ 87,808 $ 411 $ (40 ) $ 88,179
Investments Classified by Contractual Maturity Date	The amortized cost and fair values of securities available-for-sale at December 31, 2019 by contractual maturity are shown below. Securities not due at a single maturity date are shown separately. Expected maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties. December 31, 2019 Amortized Cost Fair Value Due in one year or less $ 48,767 $ 48,768 Due after one year through five years 404 411 49,171 49,179 Mortgage-backed securities - residential 7,727 8,037 Collateralized mortgage obligations - residential 2,986 2,977 $ 59,884 $ 60,193
Amortized cost and fair values of securities	Sales of equity securities were as follows: For the years ended 2019 2018 Proceeds $ 3,722 $ 4,059 Gross gains 295 3,572 Gross losses — (14 )
Securities with unrealized losses	Securities available-for-sale with unrealized losses at December 31, 2019 and 2018 not recognized in income are as follows: Less than 12 Months 12 Months or More Total Count Fair Value Unrealized Loss Count Fair Value Unrealized Loss Count Fair Value Unrealized Loss December 31, 2019 Collateralized mortgage obligations - residential 3 $ 1,566 $ (10 ) 1 $ 937 $ (3 ) 4 $ 2,503 $ (13 ) December 31, 2018 Mortgage-backed securities - residential — — — 2 904 (38 ) 2 904 (38 ) Collateralized mortgage obligations - residential — — — 2 1,729 (2 ) 2 1,729 (2 ) — $ — $ — 4 $ 2,633 $ (40 ) 4 $ 2,633 $ (40 )

Loans Receivable (Tables)

Loans Receivable (Tables)	12 Months Ended
	Dec. 31, 2019
Receivables [Abstract]
Loans Individually Evaluated For Impairment By Class Loans	The following tables present loans individually evaluated for impairment by class of loans: Loan Balance Recorded Investment Partial Charge-off Allowance for Loan Losses Allocated Average Investment in Impaired Loans Interest Income Recognized December 31, 2019 With no related allowance recorded One-to-four family residential real estate $ 2,168 $ 1,835 $ 339 $ — $ 2,208 $ 51 Multi-family mortgage - Illinois 620 620 — — 637 37 Nonresidential real estate 280 288 — — 589 2 $ 3,068 $ 2,743 $ 339 $ — $ 3,434 $ 90 December 31, 2018 With no related allowance recorded One-to-four family residential real estate $ 2,751 $ 2,172 $ 575 $ — $ 3,274 $ 41 One-to-four family residential real estate - non-owner occupied 86 46 43 — 95 — Multi-family mortgage - Illinois 654 653 — — 795 39 3,491 2,871 618 — 4,164 80 With an allowance recorded - nonresidential real estate 356 270 93 27 21 — $ 3,847 $ 3,141 $ 711 $ 27 $ 4,185 $ 80
Loans Receivable Based On Impairment Method	The following tables present the balance in the allowance for loan losses and the loans receivable by portfolio segment and based on impairment method: Allowance for loan losses Loan Balances Individually evaluated for impairment Collectively evaluated for impairment Total Individually evaluated for impairment Collectively evaluated for impairment Total December 31, 2019 One-to-four family residential real estate $ — $ 675 $ 675 $ 1,835 $ 53,915 $ 55,750 Multi-family mortgage — 3,676 3,676 620 563,130 563,750 Nonresidential real estate — 1,176 1,176 288 134,386 134,674 Commercial loans — 1,308 1,308 — 145,714 145,714 Commercial leases — 757 757 — 272,629 272,629 Consumer — 40 40 — 2,211 2,211 $ — $ 7,632 $ 7,632 $ 2,743 $ 1,171,985 1,174,728 Net deferred loan origination costs 912 Allowance for loan losses (7,632 ) Loans, net $ 1,168,008 Allowance for loan losses Loan Balances Individually evaluated for impairment Collectively evaluated for impairment Total Individually evaluated for impairment Collectively evaluated for impairment Total December 31, 2018 One-to-four family residential real estate $ — $ 699 $ 699 $ 2,218 $ 68,153 $ 70,371 Multi-family mortgage — 3,991 3,991 653 619,217 619,870 Nonresidential real estate 27 1,449 1,476 270 152,172 152,442 Construction and land — 4 4 — 172 172 Commercial loans — 1,517 1,517 — 187,406 187,406 Commercial leases — 755 755 — 299,394 299,394 Consumer — 28 28 — 1,539 1,539 $ 27 $ 8,443 $ 8,470 $ 3,141 $ 1,328,053 1,331,194 Net deferred loan origination costs 1,069 Allowance for loan losses (8,470 ) Loans, net $ 1,323,793
Schedule of Accounts, Notes, Loans and Financing Receivable	Loans receivable are as follows: December 31, 2019 2018 One-to-four family residential real estate $ 55,750 $ 70,371 Multi-family mortgage 563,750 619,870 Nonresidential real estate 134,674 152,442 Construction and land — 172 Commercial loans 145,714 187,406 Commercial leases 272,629 299,394 Consumer 2,211 1,539 1,174,728 1,331,194 Net deferred loan origination costs 912 1,069 Allowance for loan losses (7,632 ) (8,470 ) Loans, net $ 1,168,008 $ 1,323,793
Financing Receivable Credit Quality Indicators	As of December 31, 2019 , and based on the most recent analysis performed, the risk category of loans by class of loans is as follows: Pass Special Mention Substandard Nonaccrual Total One-to-four family residential real estate loans: Owner occupied $ 43,908 $ 36 $ 533 $ 512 $ 44,989 Non-owner occupied 10,696 30 35 — 10,761 Multi-family mortgage: Illinois 247,757 — 206 — 247,963 Other 315,787 — — — 315,787 Nonresidential real estate 134,134 162 90 288 134,674 Commercial loans: Regional commercial banking 24,853 — — — 24,853 Health care 62,084 8,346 — — 70,430 Direct commercial lessor 50,431 — — — 50,431 Commercial leases: Investment-rated commercial leases 133,332 507 — — 133,839 Other commercial leases 137,893 761 136 — 138,790 Consumer 2,153 5 53 — 2,211 $ 1,163,028 $ 9,847 $ 1,053 $ 800 $ 1,174,728 As of December 31, 2018 , and based on the most recent analysis performed, the risk category of loans by class of loans is as follows: Pass Special Mention Substandard Nonaccrual Total One-to-four family residential real estate loans: Owner occupied $ 55,353 $ 495 $ 328 $ 1,168 $ 57,344 Non-owner occupied 12,911 — 37 79 13,027 Multi-family mortgage: Illinois 279,021 — 216 — 279,237 Other 340,633 — — — 340,633 Nonresidential real estate 151,793 281 98 270 152,442 Land 172 — — — 172 Commercial loans: Regional commercial banking 34,764 4,810 — — 39,574 Health care 85,001 — 342 — 85,343 Direct commercial lessor 62,489 — — — 62,489 Commercial leases: Investment-rated commercial leases 165,508 701 — — 166,209 Other commercial leases 133,185 — — — 133,185 Consumer 1,529 3 7 — 1,539 $ 1,322,359 $ 6,290 $ 1,028 $ 1,517 $ 1,331,194
Past Due Financing Receivables	The following tables present the aging of the recorded investment in past due loans at December 31, 2018 by class of loans: 30-59 Days Past Due 60-89 Days Past Due 90 Days or Greater Past Due Total Past Due Loans Not Past Due Total One-to-four family residential real estate loans: Owner occupied $ 1,383 $ 638 $ 1,168 $ 3,189 $ 54,155 $ 57,344 Non-owner occupied 393 8 79 480 12,547 13,027 Multi-family mortgage: Illinois 461 — — 461 278,776 279,237 Other — — — — 340,633 340,633 Nonresidential real estate — 270 — 270 152,172 152,442 Land — — — — 172 172 Commercial loans: Regional commercial banking — — — — 39,574 39,574 Health care — — — — 85,343 85,343 Direct commercial lessor — — — — 62,489 62,489 Commercial leases: Investment-rated commercial leases 498 — — 498 165,711 166,209 Other commercial leases — — — — 133,185 133,185 Consumer 39 3 — 42 1,497 1,539 $ 2,774 $ 919 $ 1,247 $ 4,940 $ 1,326,254 $ 1,331,194 The following tables present the aging of the recorded investment in past due loans at December 31, 2019 by class of loans: 30-59 Days Past Due 60-89 Days Past Due 90 Days or Greater Past Due Total Past Due Loans Not Past Due Total One-to-four family residential real estate loans: Owner occupied $ 777 $ 340 $ 507 $ 1,624 $ 43,365 $ 44,989 Non-owner occupied 280 15 — 295 10,466 10,761 Multi-family mortgage: Illinois 981 302 — 1,283 246,680 247,963 Other — — — — 315,787 315,787 Nonresidential real estate — — 288 288 134,386 134,674 Commercial loans: Regional commercial banking — — — — 24,853 24,853 Health care — — — — 70,430 70,430 Direct commercial lessor — — — — 50,431 50,431 Commercial leases: Investment-rated commercial leases 826 — 47 873 132,966 133,839 Other commercial leases 543 136 — 679 138,111 138,790 Consumer 24 37 — 61 2,150 2,211 $ 3,431 $ 830 $ 842 $ 5,103 $ 1,169,625 $ 1,174,728
Schedule of Financing Receivables, Non Accrual Status	The following tables present the recorded investment in nonaccrual and loans 90 days or more past due still on accrual by class of loans: Loan Balance Recorded Investment Loans Past Due Over 90 Days, still accruing December 31, 2019 One-to-four family residential real estate $ 598 $ 512 $ — Nonresidential real estate 280 288 — Investment-rated commercial leases 47 — 47 $ 925 $ 800 $ 47 December 31, 2018 One-to-four family residential real estate $ 1,445 $ 1,168 $ — One-to-four family residential real estate – non-owner occupied 119 79 — Nonresidential real estate 356 270 — $ 1,920 $ 1,517 $ —
Allowance for Credit Losses on Financing Receivables	The following table presents the activity in the allowance for loan losses by portfolio segment: One-to-four family residential real estate Multi-family mortgage Non-residential real estate Construc-tion and land Commer-cial loans Commer-cial leases Consumer Total December 31, 2019 Allowance for loan losses: Beginning balance $ 699 $ 3,991 $ 1,476 $ 4 $ 1,517 $ 755 $ 28 $ 8,470 Provision for (recovery of) loan losses 123 (346 ) (217 ) (4 ) 4,224 2 43 3,825 Loans charged off (222 ) — (83 ) — (4,443 ) — (31 ) (4,779 ) Recoveries 75 31 — — 10 — — 116 Total ending allowance balance $ 675 $ 3,676 $ 1,176 $ — $ 1,308 $ 757 $ 40 $ 7,632 December 31, 2018 Allowance for loan losses: Beginning balance 850 3,849 1,605 32 1,357 655 18 $ 8,366 Provision for (recovery of) loan losses (126 ) 143 (36 ) (30 ) 71 95 28 145 Loans charged off (231 ) (35 ) (93 ) — (140 ) — (19 ) (518 ) Recoveries 206 34 — 2 229 5 1 477 Total ending allowance balance $ 699 $ 3,991 $ 1,476 $ 4 $ 1,517 $ 755 $ 28 $ 8,470 allowance for loan losses by portfolio segment: One-to-four family residential real estate Multi-family mortgage Non-residential real estate Construc-tion and land Commer-cial loans Commer-cial leases Consumer Total December 31, 2019 Allowance for loan losses: Beginning balance $ 699 $ 3,991 $ 1,476 $ 4 $ 1,517 $ 755 $ 28 $ 8,470 Provision for (recovery of) loan losses 123 (346 ) (217 ) (4 ) 4,224 2 43 3,825 Loans charged off (222 ) — (83 ) — (4,443 ) — (31 ) (4,779 ) Recoveries 75 31 — — 10 — — 116 Total ending allowance balance $ 675 $ 3,676 $ 1,176 $ — $ 1,308 $ 757 $ 40 $ 7,632 December 31, 2018 Allowance for loan losses: Beginning balance 850 3,849 1,605 32 1,357 655 18 $ 8,366 Provision for (recovery of) loan losses (126 ) 143 (36 ) (30 ) 71 95 28 145 Loans charged off (231 ) (35 ) (93 ) — (140 ) — (19 ) (518 ) Recoveries 206 34 — 2 229 5 1 477 Total ending allowance balance $ 699 $ 3,991 $ 1,476 $ 4 $ 1,517 $ 755 $ 28 $ 8,470

Other Real Estate (Tables)

Other Real Estate (Tables)	12 Months Ended
	Dec. 31, 2019
Other Real Estate Owned [Abstract]
real estate owned, rollforward [Table Text Block]	The following represents the roll forward of OREO and the composition of OREO properties. At and For the Years Ended December 31, 2019 2018 Beginning balance $ 1,226 $ 2,351 New foreclosed properties 186 1,482 Valuation adjustments (38 ) (27 ) Sales (1,188 ) (2,580 ) Ending balance $ 186 $ 1,226
Schedule of Real Estate Properties [Table Text Block]	December 31, 2019 December 31, 2018 Balance Valuation Allowance Net OREO Balance Balance Valuation Allowance Net OREO Balance One–to–four family residential $ 186 $ — $ 186 $ 875 $ — $ 875 Multi-family mortgage — — — 276 — 276 Nonresidential real estate — — — 74 — 74 Land — — — 24 (23 ) 1 $ 186 $ — $ 186 $ 1,249 $ (23 ) $ 1,226
other real estate owned valuation allowance rollforward [Table Text Block]	Activity in the valuation allowance is as follows: At and For the Years Ended December 31, 2019 2018 Beginning of year $ 23 $ 305 Additions charged to expense 38 27 Reductions from sales of other real estate owned (61 ) (309 ) End of year $ — $ 23

Premises and Equipment (Tables)

Premises and Equipment (Tables)	12 Months Ended
	Dec. 31, 2019
Property, Plant, Equipment And Leases [Abstract]
Property, Plant and Equipment	Year-end premises and equipment are as follows: December 31, 2019 2018 Land and land improvements $ 11,918 $ 12,359 Buildings and improvements 30,585 30,602 Furniture and equipment 9,454 10,039 Computer equipment 4,326 4,232 56,283 57,232 Accumulated depreciation (31,937 ) (32,027 ) $ 24,346 $ 25,205

Leases (Tables)

Leases (Tables)	12 Months Ended
	Dec. 31, 2019
Leases [Abstract]
Lease, Cost [Table Text Block]	The following table represents the classification of the Company's right of use and lease liabilities: Statement of Financial Condition Location December 31, 2019 Operating Lease Right of Use Asset: Gross carrying amount $ 6,694 Accumulated amortization (848 ) Net book value Other assets $ 5,846 Operating Lease Liabilities: Right of use lease obligations Other liabilities $ 5,846 At December 31, 2019 , the weighted-average remaining lease term for the operating leases was 9.0 years and the weighted-average discount rate used in the measurement of operating lease liabilities was 3.16% . The Company utilized the FHLB fixed rate advance rate as of January 1, 2019 for the term most closely aligning with the remaining lease term. For the year ended December 31, 2019 Lease cost: Operating lease cost $ 848 Short-term lease cost 112 Sublease income (51 ) Total lease cost $ 909 Other information: Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 901
Lessee, Operating Lease, Liability, Maturity [Table Text Block]	Future minimum payments under non-cancellable operating leases with terms longer than 12 months, are disclosed below at December 31, 2019 . Future minimum payments on shorter term lease are excluded as the amounts are insignificant. Twelve months ended December 31, 2020 $ 906 2021 925 2022 965 2023 950 2024 500 Thereafter 2,724 Total future minimum operating lease payments 6,970 Amounts representing interest (1,124 ) Present value of net future minimum operating lease payments $ 5,846

Deposits (Tables)

Deposits (Tables)	12 Months Ended
	Dec. 31, 2019
Deposits [Abstract]
Schedule Of Deposits By Type	Composition of deposits is as follows: December 31, 2019 2018 Noninterest-bearing demand deposits $ 210,762 $ 230,041 Interest-bearing NOW accounts 273,168 275,830 Money market accounts 245,610 255,951 Savings deposits 153,183 152,334 Certificates of deposit 402,034 438,328 $ 1,284,757 $ 1,352,484
Schedule Of Maturities For Total Time Deposits	Scheduled maturities of certificates of deposit for the next five years are as follows: 2020 $ 335,937 2021 48,930 2022 13,335 2023 1,645 2024 2,187 $ 402,034

Borrowings (Tables)

Borrowings (Tables)	12 Months Ended
	Dec. 31, 2019
Debt Disclosure [Abstract]
Schedule of Long-term Debt Instruments	At year-end, advances from the FHLB were as follows: December 31, 2019 2018 Contractual Rate Amount Contractual Rate Amount Fixed-rate advance from FHLB, due within 1 year — % $ — 2.51 % $ 20,000

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Schedule of Income Tax Expense (Benefit)	The income tax expense is as follows: For the years ended 2019 2018 Current expense $ 1,863 $ 378 Deferred expense 2,362 6,328 Total income tax expense $ 4,225 $ 6,706
Schedule of Effective Income Tax Rate	A reconciliation of the provision for income taxes computed at the statutory federal corporate tax rate of 21% for 2019 and 2018 , to the income tax expense in the consolidated statements of operations follows: For the years ended 2019 2018 Expense computed at the statutory federal tax rate $ 3,339 $ 5,470 State taxes and other, net 915 1,564 Bank-owned life insurance (29 ) (328 ) $ 4,225 $ 6,706 Effective income tax rate 26.57 % 25.74 %
Schedule of Deferred Assets And Liabilities	The net deferred tax asset is as follows: December 31, 2019 2018 Gross deferred tax assets Allowance for loan losses $ 2,043 $ 2,279 Alternative minimum tax, general business credit and net operating loss carryforwards 4,452 6,669 Lease liability 1,565 — Tax deductible goodwill and core deposit intangible 314 561 Other 741 1,256 9,115 10,765 Gross deferred tax liabilities Net deferred loan origination costs (1,013 ) (1,186 ) Purchase accounting adjustments (1,623 ) (1,673 ) Right of use asset (1,565 ) — Other (958 ) (649 ) Unrealized gain on securities (83 ) (1,022 ) (5,242 ) (4,530 ) $ 3,873 $ 6,235
Schedule of Unrecognized Tax Benefits	A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows: December 31, 2019 2018 Beginning of year $ 198 $ 129 Additions based on tax positions related to the current year 62 85 Additions for tax positions of prior years — 4 Reductions due to the statute of limitations and reductions for tax positions of prior years (16 ) (20 ) End of year $ 244 $ 198

Regulatory Matters (Tables)

Regulatory Matters (Tables)	12 Months Ended
	Dec. 31, 2019
Banking and Thrift [Abstract]
Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations	Actual and required capital amounts and ratios for the Bank were: Actual Required for Capital Adequacy Purposes To be Well-Capitalized under Prompt Corrective Action Provisions Amount Ratio Amount Ratio Amount Ratio December 31, 2019 Total capital (to risk-weighted assets) $ 170,203 16.38 % $ 83,130 8.00 % $ 103,913 10.00 % Tier 1 (core) capital (to risk-weighted assets) 162,455 15.63 62,348 6.00 83,130 8.00 Common Tier 1 (CET1) 162,455 15.63 46,761 4.50 67,543 6.50 Tier 1 (core) capital (to adjusted average total assets) 162,455 10.89 59,666 4.00 74,583 5.00 December 31, 2018 Total capital (to risk-weighted assets) 178,664 15.30 93,430 8.00 $ 116,787 10.00 % Tier 1 (core) capital (to risk-weighted assets) 170,194 14.57 70,072 6.00 93,430 8.00 Common Tier 1 (CET1) 170,194 14.57 52,554 4.50 75,912 6.50 Tier 1 (core) capital (to adjusted average total assets) 170,194 11.03 61,721 4.00 77,151 5.00

Employee Benefit Plans (Tables)

Employee Benefit Plans (Tables)	12 Months Ended
	Dec. 31, 2019
Retirement Benefits [Abstract]
Schedule of Employee Stock Ownership Plan (ESOP) Disclosures	Shares held by the ESOP were as follows: December 31, 2018 Allocated to participants 885,896 Distributed to participants (885,896 ) Total ESOP shares —

Equity Incentive Plans (Tables)

Equity Incentive Plans (Tables)	12 Months Ended
	Dec. 31, 2019
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Schedule of Unvested Shares of Restricted Stock	Restricted Stock Number of Shares Weighted Average Fair Value at Grant Date Weighted Average Term to Vest (in years) Aggregate Intrinsic Value (1) Shares outstanding at January 1, 2018 940 $ 8.14 0.00 $ 14 Shares granted — — Shares vested (694 ) 8.14 Shares forfeited (246 ) 8.14 Shares outstanding at December 31, 2018 — $ — 0.00 $ — (1) Restricted stock aggregate intrinsic value represents the number of shares of restricted stock multiplied by the market price of the common stock underlying the outstanding shares on the date shown.

Loan Commitments and Other Of_2

Loan Commitments and Other Off-Balance Sheet Activities (Tables)	12 Months Ended
	Dec. 31, 2019
Commitments and Contingencies Disclosure [Abstract]
Schedule of Off-balance Sheet Instruments Outstanding	The contractual or notional amounts are as follows: December 31, 2019 2018 Financial instruments wherein contractual amounts represent credit risk Commitments to extend credit $ 19,737 $ 75,180 Standby letters of credit 6,119 5,965 Unused lines of credit 149,771 152,554

Fair Value (Tables)

Fair Value (Tables)	12 Months Ended
	Dec. 31, 2019
Fair Value Disclosures [Abstract]
Schedule of Company's financial instruments measured at fair values	The following table sets forth the Company’s financial assets that were accounted for at fair value and are classified in their entirety based on the lowest level of input that is significant to the fair value measurement. Fair Value Measurements Using Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Fair Value December 31, 2019 Securities: Certificates of deposit $ — $ 48,666 $ — $ 48,666 Municipal securities — 513 — 513 Mortgage-backed securities – residential — 8,037 — 8,037 Collateralized mortgage obligations – residential — 2,977 — 2,977 $ — $ 60,193 $ — $ 60,193 December 31, 2018 Securities: Certificates of deposit $ — $ 73,507 $ — $ 73,507 Municipal securities — 509 — 509 Mortgage-backed securities - residential — 10,478 — 10,478 Collateralized mortgage obligations – residential — 3,685 — 3,685 $ — $ 88,179 $ — $ 88,179
Schedule of Company's financial instruments measured on non recurring at fair values	The following table sets forth the Company’s assets that were measured at fair value on a non-recurring basis: Fair Value Measurement Using Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Fair Value December 31, 2018 Impaired loans - Nonresidential real estate $ — $ — $ 243 $ 243 Other real estate owned - Land $ — $ — $ 1 $ 1 Other investments (1) $ — $ — $ 3,427 $ 3,427
Schedule of fair value quantitative information	The following table presents quantitative information, based on certain empirical data with respect to Level 3 fair value measurements for financial instruments measured at fair value on a non-recurring basis at December 31, 2018 : Fair Value Valuation Technique Unobservable Input Range (Weighted Average) Other real estate owned - Land $ 1 Sales comparison Discount applied to valuation 12.3%
Carrying amount and estimated fair value of financial instruments	The carrying amount and estimated fair value of financial instruments are as follows: Fair Value Measurements at December 31, 2019 Using: Carrying Amount Level 1 Level 2 Level 3 Total Financial assets Cash and cash equivalents $ 190,325 $ 9,785 $ 180,540 $ — $ 190,325 Securities 60,193 — 60,193 — 60,193 Loans receivable, net of allowance for loan losses 1,168,008 — — 1,177,459 1,177,459 FHLB and FRB stock 7,490 — — — N/A Accrued interest receivable 4,563 — 252 4,311 4,563 Financial liabilities Certificates of deposit 402,034 — 402,914 — 402,914 Borrowings 61 — 61 — 61 Fair Value Measurements at December 31, 2018 Using: Carrying Amount Level 1 Level 2 Level 3 Total Financial assets Cash and cash equivalents $ 98,204 $ 13,805 $ 84,399 $ — $ 98,204 Securities available-for-sale 88,179 — 88,179 — 88,179 Loans receivable, net of allowance for loan losses 1,323,793 — — 1,315,855 1,315,855 FHLB and FRB stock 8,026 — — — N/A Accrued interest receivable 4,952 — 249 4,703 4,952 Financial liabilities Certificates of deposit 438,328 — 436,598 — 436,598 Borrowings 21,049 — 21,050 — 21,050

Revenue From Contracts With C_2

Revenue From Contracts With Customers (Tables)	12 Months Ended
	Dec. 31, 2019
Revenue from Contract with Customer [Abstract]
Noninterest Income Outside the Scope of ASC 606	tems outside of the scope of the ASC 606 are noted as such. For the years ended 2019 2018 Deposit service charges and fees $ 3,844 $ 3,968 Loan servicing fees (1) 451 439 Mortgage brokerage and banking fees (1) 149 257 Gain on sale of equity securities (1) 295 3,558 Unrealized gain on equity securities (1) — 3,427 Gain on sale of premises held-for-sale — 93 Loss on disposal of other assets (44 ) — Trust and insurance commissions and annuities income 844 937 Earnings on bank-owned life insurance (1) 136 174 Bank-owned life insurance death benefit (1) — 1,389 Other (1) 497 635 Total noninterest income $ 6,172 $ 14,877

Company Only Condensed Financ_2

Company Only Condensed Financial Information (Tables)	12 Months Ended
	Dec. 31, 2019
Condensed Financial Information Disclosure [Abstract]
Condensed Statements of Financial Condition	Condensed Statements of Financial Condition December 31, 2019 2018 Assets Cash in subsidiary $ 6,864 $ 11,227 Investment in subsidiary 164,847 173,253 Deferred tax asset 558 1,999 Other assets 2,115 3,317 $ 174,384 $ 189,796 Liabilities and Stockholders' Equity Accrued expenses and other liabilities $ 12 $ 2,646 Total stockholders’ equity 174,372 187,150 $ 174,384 $ 189,796
Condensed Statements of Operations	Condensed Statements of Operations For the years ended 2019 2018 Dividends from subsidiary $ 21,200 $ 36,044 Other expense 1,600 1,573 Income before income tax and undistributed subsidiary excess distributions 19,600 34,471 Income tax benefit (433 ) (398 ) Income before equity in undistributed subsidiary excess distributions 20,033 34,869 Equity in undistributed subsidiary excess distributions (8,361 ) (15,527 ) Net income $ 11,672 $ 19,342
Condensed Statements of Cash Flows	Condensed Statements of Cash Flows For the years ended 2019 2018 Cash flows from operating activities Net income $ 11,672 $ 19,342 Adjustments: Equity in undistributed subsidiary excess distributions 8,361 15,527 Change in other assets 2,643 67 Change in accrued expenses and other liabilities (2,634 ) (369 ) Net cash from operating activities 20,042 34,567 Cash flows from financing activities Repurchase and retirement of common stock (18,139 ) (23,284 ) Cash dividends paid on common stock (6,266 ) (6,449 ) Net cash used in financing activities (24,405 ) (29,733 ) Net change in cash in subsidiary (4,363 ) 4,834 Beginning cash in subsidiary 11,227 6,393 Ending cash in subsidiary $ 6,864 $ 11,227

Selected Quarterly Financial _2

Selected Quarterly Financial Data (unaudited) (Tables)	12 Months Ended
	Dec. 31, 2019
Quarterly Financial Information Disclosure [Abstract]
Selected Quarterly Financial Data	For the year ended December 31, 2019 First Quarter Second Quarter Third Quarter Fourth Quarter Interest income $ 16,526 $ 16,522 $ 16,628 $ 15,732 Interest expense 3,307 3,419 3,386 3,105 Net interest income 13,219 13,103 13,242 12,627 Provision for (recovery of) loan losses (87 ) 3,957 (134 ) 89 Net interest income 13,306 9,146 13,376 12,538 Noninterest income 1,624 1,426 1,474 1,648 Noninterest expense 10,098 9,472 9,509 9,562 Income before income taxes 4,832 1,100 5,341 4,624 Income tax expense 1,281 293 1,417 1,234 Net income $ 3,551 $ 807 $ 3,924 $ 3,390 Basic and diluted earnings per common share $ 0.22 $ 0.05 $ 0.26 $ 0.22 For the year ended December 31, 2018 First Second Third Fourth Interest income $ 14,748 $ 15,020 $ 15,373 $ 16,146 Interest expense 1,727 2,039 2,408 3,043 Net interest income 13,021 12,981 12,965 13,103 Provision for (recovery of) loan losses (258 ) 23 (23 ) 403 Net interest income 13,279 12,958 12,988 12,700 Noninterest income 1,539 3,094 1,570 8,674 Noninterest expense 9,959 10,215 9,425 11,155 Income before income taxes 4,859 5,837 5,133 10,219 Income tax expense 1,300 1,207 1,396 2,803 Net income $ 3,559 $ 4,630 $ 3,737 $ 7,416 Basic and diluted earnings per common share $ 0.20 $ 0.26 $ 0.22 $ 0.44

Summary of Significant Accoun_3

Summary of Significant Accounting Policies - Mortgage Servicing Rights (Details) - USD ($)	Dec. 31, 2019	Dec. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Principal Amount Outstanding of Loans Held-in-portfolio	$ 63,400,000	$ 76,200,000
Escrow deposit	2,200,000	1,800,000
Fair value of mortgage servicing rights	335,000	$ 420,000
Valuation Allowance for Impairment of Recognized Servicing Assets, Balance	$ 0

Summary of Significant Accoun_4

Summary of Significant Accounting Policies - Premises and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Property, Plant and Equipment [Line Items]
Fair Value	$ 60,193	$ 88,179
Transfer of Property to Held-for-sale	6,694	0
Gain on sale of premises held-for-sale	$ 0	$ 93
Building and building improvements [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Premises and Equipment, Useful life	25 years
Building and building improvements [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Premises and Equipment, Useful life	40 years
Building Improvements [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Premises and Equipment, Useful life	10 years
Building Improvements [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Premises and Equipment, Useful life	20 years
Furniture and equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Premises and Equipment, Useful life	5 years
Furniture and equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Premises and Equipment, Useful life	15 years
Computer Equipment And Software [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Premises and Equipment, Useful life	2 years
Computer Equipment And Software [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Premises and Equipment, Useful life	5 years
Automobiles [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Premises and Equipment, Useful life	4 years

Summary of Significant Accoun_5

Summary of Significant Accounting Policies - Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Deferred Tax Assets, Net	$ 3,873				$ 6,235				$ 3,873	$ 6,235
Total income tax expense (benefit)	1,234	$ 1,417	$ 293	$ 1,281	2,803	$ 1,396	$ 1,207	$ 1,300	4,225	6,706
Unrecognized tax benefits	$ 244				$ 198				$ 244	$ 198	$ 129

Summary of Significant Accoun_6

Summary of Significant Accounting Policies - Accounting Standards (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Debt Securities, Available-for-sale [Line Items]
Fair Value	$ 60,193	$ 88,179
Operating Lease, Right-of-Use Asset	$ 5,846
Equity Funds [Member]
Debt Securities, Available-for-sale [Line Items]
Fair Value		$ 0

Earnings Per Share (Details)

Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Earnings (Loss) Per Share, Basic and Diluted [Abstract]
Net income (loss) available to common stockholders	$ 3,390	$ 3,924	$ 807	$ 3,551	$ 7,416	$ 3,737	$ 4,630	$ 3,559	$ 11,672	$ 19,342
Average common shares outstanding (shares)									15,594,883	17,434,780
Less:
Unvested restricted stock shares (shares)									0	(435)
Weighted average common shares outstanding (shares)									15,594,883	17,434,345
Basic earnings (loss) per common share (usd per share)	$ 0.22	$ 0.26	$ 0.05	$ 0.22		$ 0.22	$ 0.26	$ 0.20	$ 0.75	$ 1.11

Securities - Fair Value of Secu

Securities - Fair Value of Securites (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 59,884	$ 87,808
Gross Unrealized Gains	322	411
Gross Unrealized Losses	(13)	(40)
Fair Value	60,193	88,179
Certificates of deposit [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	48,666	73,507
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	48,666	73,507
Municipal Bonds [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	505	509
Gross Unrealized Gains	8	0
Gross Unrealized Losses	0	0
Fair Value	513	509
Equity mutual fund [Member]
Debt Securities, Available-for-sale [Line Items]
Fair Value		0
Mortgage - backed securities - residential [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	7,727	10,116
Gross Unrealized Gains	310	400
Gross Unrealized Losses	0	(38)
Fair Value	8,037	10,478
Collateralized mortgage obligations - residential [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	2,986	3,676
Gross Unrealized Gains	4	11
Gross Unrealized Losses	(13)	(2)
Fair Value	$ 2,977	3,685
Common Class B [Member] | Equity mutual fund [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost		0
Gross Unrealized Gains		3,427
Gross Unrealized Losses		0
Fair Value		$ 3,427

Securities - Proceeds and Gross

Securities - Proceeds and Gross Gains (Losses) From Sale of Securities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Investments, Debt and Equity Securities [Abstract]
Proceeds	$ 3,722	$ 4,059
Gross gains	295	3,572
Gross losses	$ 0	$ (14)

Securities - Amortized Cost and

Securities - Amortized Cost and Fair Value (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Amortized cost and fair values of securities
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling within One Year, Amortized Cost	$ 48,767
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Amortized Cost	404
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Amortized Cost	49,171
Amortized Cost	59,884	$ 87,808
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling within One Year, Fair Value	48,768
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after One Through Five Years, Fair Value	411
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Fair Value	49,179
Debt Securities, Available-for-sale	60,193	88,179
Mortgage - backed securities - residential [Member]
Amortized cost and fair values of securities
Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Amortized Cost	7,727
Amortized Cost	7,727	10,116
Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Fair Value	8,037
Debt Securities, Available-for-sale	8,037	10,478
Collateralized mortgage obligations - residential [Member]
Amortized cost and fair values of securities
Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Amortized Cost	2,986
Amortized Cost	2,986	3,676
Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Fair Value	2,977
Debt Securities, Available-for-sale	2,977	3,685
Collateral Pledged [Member]
Amortized cost and fair values of securities
Debt Securities, Available-for-sale, Restricted	$ 2,000	$ 2,700

Securities - Unrealized Losses

Securities - Unrealized Losses (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Debt Securities, Available-for-sale [Line Items]
Less than 12 Months, Fair Value		$ 0
12 Months or More, Fair Value		2,633
Total, Fair Value		2,633
Less than 12 Months, Unrealized Loss		0
12 Months or More, Unrealized Loss		(40)
Unrealized Loss, Total		(40)
Mortgage Backed Securities Residential [Member]
Debt Securities, Available-for-sale [Line Items]
Less than 12 Months, Fair Value		0
12 Months or More, Fair Value		904
Total, Fair Value		904
Less than 12 Months, Unrealized Loss		0
12 Months or More, Unrealized Loss		(38)
Unrealized Loss, Total		(38)
Collateralized mortgage obligations - residential [Member]
Debt Securities, Available-for-sale [Line Items]
Less than 12 Months, Fair Value	$ 1,566	0
12 Months or More, Fair Value	937	1,729
Total, Fair Value	2,503	1,729
Less than 12 Months, Unrealized Loss	(10)	0
12 Months or More, Unrealized Loss	(3)	(2)
Unrealized Loss, Total	$ (13)	$ (2)

Securities - Narrative (Details

Securities - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2019	Dec. 31, 2018
Debt Securities, Available-for-sale [Line Items]
Realized gain		$ 295	$ 3,572
Common Class B [Member]
Debt Securities, Available-for-sale [Line Items]
Number of shares sold	25,702
Common Class B [Member] | Visa Inc's Initial Public Offering [Member]
Debt Securities, Available-for-sale [Line Items]
Number of shares sold		51,404
Number of shares remaining	25,702	25,702
Other investments | Fair Value, Measurements, Nonrecurring [Member]
Debt Securities, Available-for-sale [Line Items]
Other investments			3,427
Fair Value, Inputs, Level 3 [Member] | Other investments | Fair Value, Measurements, Nonrecurring [Member]
Debt Securities, Available-for-sale [Line Items]
Other investments			$ 3,427

Loans Receivable (Details)

Loans Receivable (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Loans receivable
Total loans	$ 1,174,728,000	$ 1,331,194,000
Net deferred loan origination costs	912,000	1,069,000
Allowance for loan losses	(7,632,000)	(8,470,000)	$ (8,366,000)
Loans, net	1,168,008,000	1,323,793,000
One-to-four family residential real estate loans [Member]
Loans receivable
Total loans	55,750,000	70,371,000
Allowance for loan losses	(675,000)	(699,000)	(850,000)
Multi-family mortgage loans [Member]
Loans receivable
Total loans	563,750,000	619,870,000
Allowance for loan losses	(3,676,000)	(3,991,000)	(3,849,000)
Nonresidential Real Estate [Member]
Loans receivable
Total loans	134,674,000	152,442,000
Allowance for loan losses	(1,176,000)	(1,476,000)
Construction and land loans [Member]
Loans receivable
Total loans	0	172,000
Allowance for loan losses		(4,000)
Commercial loans [Member]
Loans receivable
Total loans	145,714,000	187,406,000
Allowance for loan losses	(1,308,000)	(1,517,000)
Commercial leases [Member]
Loans receivable
Total loans	272,629,000	299,394,000
Allowance for loan losses	(757,000)	(755,000)	$ (655,000)
Consumer loans [Member]
Loans receivable
Total loans	2,211,000	1,539,000
Allowance for loan losses	(40,000)	(28,000)
Nonresidential real estate loans [Member]
Loans receivable
Total loans	$ 134,674,000	$ 152,442,000
No Public Rating [Member] | Maximum [Member] | Commercial leases [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial Leases, Maturity	5 years
Collateralized Loan [Member] | Multi-family mortgage loans [Member]
Loans receivable
Collateralized Loan Receivable, Percentage Of Collateral Located Outside Primary Market Area	57.00%
Collateralized Loan [Member] | Nonresidential real estate loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Projected Cash Flow To Loan Debt Service Requirement	120.00%
Collateralized Loan [Member] | Maximum [Member] | Multi-family mortgage loans [Member]
Loans receivable
Total loans	$ 5,000,000
Collateralized Loan [Member] | Maximum [Member] | Nonresidential real estate loans [Member]
Loans receivable
Total loans	5,000,000
Collateralized Loan [Member] | Minimum [Member] | Multi-family mortgage loans [Member]
Loans receivable
Total loans	500,000
Collateralized Loan [Member] | Minimum [Member] | Nonresidential real estate loans [Member]
Loans receivable
Total loans	$ 500,000
Mortgage loans above $400,000 [Member] | Collateralized Loan [Member] | Multi-family mortgage loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Projected Cash Flow To Loan Debt Service Requirement	120.00%
Adjustable Rate And Fixed Rate Residential Mortgage [Member] | $2,500,000 [Member] | Maximum [Member] | Residential Mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Face Amount of Mortgages	$ 2,500,000
First Mortgage [Member] | Residential Mortgage [Member]
Loans receivable
Percent Threshold On Loan To Value Ratios Requiring Private Mortgage Insurance	80.00%

Loans Receivable - Loan Origina

Loans Receivable - Loan Origination and Risk Management (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases, amount	$ 1,174,728,000	$ 1,331,194,000
Maximum [Member] | Finance Leases Financing Receivable [Member] | Investment Grade [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Outstanding credit exposure	20,000,000
Multi-family mortgage loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases, amount	$ 563,750,000	619,870,000
Multi-family mortgage loans [Member] | Collateralized Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateralized Loan Receivable, Percentage Of Collateral Located Outside Primary Market Area	57.00%
Multi-family mortgage loans [Member] | Collateralized Loan [Member] | Mortgage loans above $400,000 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Projected Cash Flow To Loan Debt Service Requirement	120.00%
Multi-family mortgage loans [Member] | Minimum [Member] | Collateralized Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases, amount	$ 500,000
Multi-family mortgage loans [Member] | Maximum [Member] | Collateralized Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases, amount	$ 5,000,000
Loan amount as a percentage to value of property collateralized	0.8
Nonresidential real estate loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases, amount	$ 134,674,000	152,442,000
Nonresidential real estate loans [Member] | Collateralized Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Projected Cash Flow To Loan Debt Service Requirement	120.00%
Nonresidential real estate loans [Member] | Collateralized Loan [Member] | Fixed Rate Nonresidential Mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortization period	15 years
Nonresidential real estate loans [Member] | Minimum [Member] | Collateralized Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases, amount	$ 500,000
Maturity period	3 years
Balloon maturity	3 years
Amortization period	20 years
Nonresidential real estate loans [Member] | Maximum [Member] | Collateralized Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases, amount	$ 5,000,000
Loan amount as a percentage to value of property collateralized	0.8
Maturity period	5 years
Balloon maturity	5 years
Amortization period	30 years
Residential mortgage [Member] | Maximum [Member] | Adjustable Rate And Fixed Rate Residential Mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Maturity period	30 years
Residential mortgage [Member] | Maximum [Member] | $2,500,000 [Member] | Adjustable Rate And Fixed Rate Residential Mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Face Amount of Mortgages	$ 2,500,000
Finance Leases Financing Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases, amount	$ 272,629,000	$ 299,394,000
Finance Leases Financing Receivable [Member] | Maximum [Member] | No Public Rating [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial Leases, Maturity	5 years
Outstanding credit exposure	$ 10,000,000
Finance Leases Financing Receivable [Member] | Maximum [Member] | Investment Grade [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Outstanding credit exposure	$ 10,000,000

Loans Receivable - Allowance fo

Loans Receivable - Allowance for Loan Losses (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Allowance for loan losses and the loans receivable by portfolio segment
Individually evaluated for impairment	$ 0	$ 27
Collectively evaluated for impairment	7,632	8,443
Allowance for loan losses	7,632	8,470	$ 8,366
Individually evaluated for impairment	2,743	3,141
Collectively evaluated for impairment	1,171,985	1,328,053
Total loans	1,174,728	1,331,194
Net deferred loan origination costs	912	1,069
Loans, net	1,168,008	1,323,793
One-to-four family residential real estate loans [Member]
Allowance for loan losses and the loans receivable by portfolio segment
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	675	699
Allowance for loan losses	675	699	850
Individually evaluated for impairment	1,835	2,218
Collectively evaluated for impairment	53,915	68,153
Total loans	55,750	70,371
Multi-family mortgage loans [Member]
Allowance for loan losses and the loans receivable by portfolio segment
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	3,676	3,991
Allowance for loan losses	3,676	3,991	3,849
Individually evaluated for impairment	620	653
Collectively evaluated for impairment	563,130	619,217
Total loans	563,750	619,870
Nonresidential Real Estate [Member]
Allowance for loan losses and the loans receivable by portfolio segment
Individually evaluated for impairment	0	27
Collectively evaluated for impairment	1,176	1,449
Allowance for loan losses	1,176	1,476
Individually evaluated for impairment	288	270
Collectively evaluated for impairment	134,386	152,172
Total loans	134,674	152,442
Construction and land loans [Member]
Allowance for loan losses and the loans receivable by portfolio segment
Individually evaluated for impairment		0
Collectively evaluated for impairment		4
Allowance for loan losses		4
Individually evaluated for impairment		0
Collectively evaluated for impairment		172
Total loans	0	172
Commercial loans [Member]
Allowance for loan losses and the loans receivable by portfolio segment
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	1,308	1,517
Allowance for loan losses	1,308	1,517
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	145,714	187,406
Total loans	145,714	187,406
Commercial leases [Member]
Allowance for loan losses and the loans receivable by portfolio segment
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	757	755
Allowance for loan losses	757	755	$ 655
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	272,629	299,394
Total loans	272,629	299,394
Consumer loans [Member]
Allowance for loan losses and the loans receivable by portfolio segment
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	40	28
Allowance for loan losses	40	28
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	2,211	1,539
Total loans	$ 2,211	$ 1,539

Loans Receivable - Activity in

Loans Receivable - Activity in the Allowance for Loan Losses (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance				$ 8,470				$ 8,366	$ 8,470	$ 8,366
Loans charged off									(4,779)	(518)
Recoveries									116	477
Provision for (recovery of) loan losses	$ 89	$ (134)	$ 3,957	(87)	$ 403	$ (23)	$ 23	(258)	3,825	145
Ending balance	7,632				8,470				7,632	8,470
One-to-four family residential real estate loans [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance				699				850	699	850
Loans charged off									(222)	(231)
Recoveries									75	206
Provision for (recovery of) loan losses									123	(126)
Ending balance	675				699				675	699
Multi-family mortgage loans [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance				3,991				3,849	3,991	3,849
Loans charged off									0	(35)
Recoveries									31	34
Provision for (recovery of) loan losses									(346)	143
Ending balance	3,676				3,991				3,676	3,991
Nonresidential real estate loans [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance				1,476				1,605	1,476	1,605
Loans charged off									(83)	(93)
Provision for (recovery of) loan losses									(217)	(36)
Ending balance	1,176				1,476				1,176	1,476
Land loans [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance				4				32	4	32
Recoveries										2
Provision for (recovery of) loan losses									(4)	(30)
Ending balance	0				4				0	4
Consumer Portfolio Segment [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Provision for (recovery of) loan losses									43	28
Construction and land loans [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance				4					4
Ending balance					4					4
Commercial loans [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance				1,517					1,517
Loans charged off									(4,443)	(140)
Recoveries									10	229
Ending balance	1,308				1,517				1,308	1,517
Commercial leases [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance				755				655	755	655
Recoveries									0	5
Provision for (recovery of) loan losses									2	95
Ending balance	757				755				757	755
Consumer loans [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance				28					28
Loans charged off									(31)	(19)
Recoveries									0	1
Ending balance	40				28				40	28
Commercial loans - other [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance				1,517				1,357	1,517	1,357
Provision for (recovery of) loan losses									4,224	71
Ending balance	1,308				1,517				1,308	1,517
Consumer Loans [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance				$ 28				$ 18	28	18
Ending balance	$ 40				$ 28				$ 40	$ 28

Loans Receivable - Loans Indivi

Loans Receivable - Loans Individually Evaluated for Impairment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Loans individually evaluated for impairment by class loans
Loan Balance		$ 3,491
Recorded Investment		2,871
Partial Charge-off		618
Average Investment in Impaired Loans		4,164
Interest Income Recognized		80
Loan Balance (With an allowance recorded)		3,847
Recorded Investment (With an allowance recorded)		3,141
Partial Charge-offs (With an allowance recorded)		711
Allowance for loan losses (With an allowance recorded)	$ 0	27
Average Investment in Impaired Loans (With an allowance recorded)		4,185
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method		80
Impaired Loan, Total	3,068
Recorded Investment, Total	2,743
Partial Charge-offs, Total	339
Average Investment in Impaired Loans, Total	3,434
Interest Income Recognized, Total	90
One-to-four family residential real estate loans [Member]
Loans individually evaluated for impairment by class loans
Loan Balance	2,168	2,751
Recorded Investment	1,835	2,172
Partial Charge-off	339	575
Average Investment in Impaired Loans	2,208	3,274
Interest Income Recognized	51	41
Allowance for loan losses (With an allowance recorded)	0	0
One-to-four family residential real estate loans - non-owner occupied loans [Member]
Loans individually evaluated for impairment by class loans
Loan Balance		86
Recorded Investment		46
Partial Charge-off		43
Average Investment in Impaired Loans		95
Interest Income Recognized		0
Multi-family mortgage loans [Member]
Loans individually evaluated for impairment by class loans
Loan Balance	620	654
Recorded Investment	620	653
Partial Charge-off	0	0
Average Investment in Impaired Loans	637	795
Interest Income Recognized	37	39
Allowance for loan losses (With an allowance recorded)	0	0
Nonresidential real estate loans [Member]
Loans individually evaluated for impairment by class loans
Loan Balance	280
Recorded Investment	288
Partial Charge-off	0
Average Investment in Impaired Loans	589
Interest Income Recognized	2
Loan Balance (With an allowance recorded)		356
Recorded Investment (With an allowance recorded)		270
Partial Charge-offs (With an allowance recorded)		93
Allowance for loan losses (With an allowance recorded)		27
Average Investment in Impaired Loans (With an allowance recorded)		21
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method		0
Consumer loans [Member]
Loans individually evaluated for impairment by class loans
Allowance for loan losses (With an allowance recorded)	$ 0	$ 0

Loans Receivable - Nonaccrual L

Loans Receivable - Nonaccrual Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Financing Receivable, Recorded Investment, Past Due [Line Items]
Unpaid Principal Balance	$ 925	$ 1,920
Recorded Investment	800	1,517
Loans Past Due Over 90 Days, still accruing	47	0
One-to-four family residential real estate loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Unpaid Principal Balance	598	1,445
Recorded Investment	512	1,168
Loans Past Due Over 90 Days, still accruing	0	0
One-to-four family residential real estate loans - non-owner occupied loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Unpaid Principal Balance		119
Recorded Investment		79
Loans Past Due Over 90 Days, still accruing		0
Nonresidential real estate loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Unpaid Principal Balance	280	356
Recorded Investment	288	270
Loans Past Due Over 90 Days, still accruing	0	$ 0
Nonrated Commercial Leases [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Unpaid Principal Balance	47
Recorded Investment	0
Loans Past Due Over 90 Days, still accruing	$ 47

Loans Receivable - Past Due Loa

Loans Receivable - Past Due Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	$ 5,103	$ 4,940
Recorded investment, loans not past due	1,169,625	1,326,254
Recorded investment, total	1,174,728	1,331,194
One-to-four family residential real estate loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	1,624	3,189
Recorded investment, loans not past due	43,365	54,155
Recorded investment, total	44,989	57,344
One-to-four family residential real estate loans - non-owner occupied loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	295	480
Recorded investment, loans not past due	10,466	12,547
Recorded investment, total	10,761	13,027
Multi-family mortgage loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	1,283	461
Recorded investment, loans not past due	246,680	278,776
Recorded investment, total	247,963	279,237
Wholesale commercial lending [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	0	0
Recorded investment, loans not past due	315,787	340,633
Recorded investment, total	315,787	340,633
Nonresidential real estate loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	288	270
Recorded investment, loans not past due	134,386	152,172
Recorded investment, total	134,674	152,442
Land loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due		0
Recorded investment, loans not past due		172
Recorded investment, total		172
Commercial loans - Secured [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	0	0
Recorded investment, loans not past due	24,853	39,574
Recorded investment, total	24,853	39,574
Commercial loans - Unsecured [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	0	0
Commercial Loans - Municipal loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	0	0
Commercial Loans - Warehouse Lines [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment, loans not past due	50,431	62,489
Recorded investment, total	50,431	62,489
Commercial Loans - Health Care [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment, loans not past due	70,430	85,343
Recorded investment, total	70,430	85,343
Commercial Leases - Investment rated commercial leases [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	873	498
Recorded investment, loans not past due	132,966	165,711
Recorded investment, total	133,839	166,209
Commercial Leases - Below Investment Grade [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	679	0
Recorded investment, loans not past due	138,111	133,185
Recorded investment, total	138,790	133,185
Consumer loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	61	42
Recorded investment, loans not past due	2,150	1,497
Recorded investment, total	2,211	1,539
30-59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	3,431	2,774
30-59 Days Past Due [Member] | One-to-four family residential real estate loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	777	1,383
30-59 Days Past Due [Member] | One-to-four family residential real estate loans - non-owner occupied loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	280	393
30-59 Days Past Due [Member] | Multi-family mortgage loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	981	461
30-59 Days Past Due [Member] | Wholesale commercial lending [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	0	0
30-59 Days Past Due [Member] | Nonresidential real estate loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	0	0
30-59 Days Past Due [Member] | Land loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due		0
30-59 Days Past Due [Member] | Commercial loans - Secured [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	0	0
30-59 Days Past Due [Member] | Commercial Loans - Municipal loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	0	0
30-59 Days Past Due [Member] | Commercial Loans - Warehouse Lines [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	0	0
30-59 Days Past Due [Member] | Commercial Leases - Investment rated commercial leases [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	826	498
30-59 Days Past Due [Member] | Commercial Leases - Below Investment Grade [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	543	0
30-59 Days Past Due [Member] | Consumer loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	24	39
60-89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	830	919
60-89 Days Past Due [Member] | One-to-four family residential real estate loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	340	638
60-89 Days Past Due [Member] | One-to-four family residential real estate loans - non-owner occupied loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	15	8
60-89 Days Past Due [Member] | Multi-family mortgage loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	302	0
60-89 Days Past Due [Member] | Wholesale commercial lending [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	0	0
60-89 Days Past Due [Member] | Nonresidential real estate loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	0	270
60-89 Days Past Due [Member] | Land loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due		0
60-89 Days Past Due [Member] | Commercial loans - Secured [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	0	0
60-89 Days Past Due [Member] | Commercial Loans - Municipal loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	0	0
60-89 Days Past Due [Member] | Commercial Loans - Warehouse Lines [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	0	0
60-89 Days Past Due [Member] | Commercial loans - Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	136	0
60-89 Days Past Due [Member] | Commercial Leases - Investment rated commercial leases [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	0	0
60-89 Days Past Due [Member] | Consumer loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	37	3
90 Days or Greater Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	842	1,247
90 Days or Greater Past Due [Member] | One-to-four family residential real estate loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	507	1,168
90 Days or Greater Past Due [Member] | One-to-four family residential real estate loans - non-owner occupied loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	0	79
90 Days or Greater Past Due [Member] | Multi-family mortgage loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	0	0
90 Days or Greater Past Due [Member] | Wholesale commercial lending [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	0	0
90 Days or Greater Past Due [Member] | Nonresidential real estate loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	288	0
90 Days or Greater Past Due [Member] | Land loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due		0
90 Days or Greater Past Due [Member] | Commercial loans - Secured [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	0	0
90 Days or Greater Past Due [Member] | Commercial Loans - Municipal loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	0	0
90 Days or Greater Past Due [Member] | Commercial Loans - Warehouse Lines [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	0	0
90 Days or Greater Past Due [Member] | Commercial loans - Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	0	0
90 Days or Greater Past Due [Member] | Commercial Leases - Investment rated commercial leases [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	47	0
90 Days or Greater Past Due [Member] | Consumer loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	$ 0	$ 0

Loans Receivable - Aging of Rec

Loans Receivable - Aging of Recorded Investments (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	$ 5,103	$ 4,940
Recorded Investment, Loans Not Past Due	1,169,625	1,326,254
One-to-four family residential real estate loans - non-owner occupied loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	295	480
Recorded Investment, Loans Not Past Due	10,466	12,547
Multi-family mortgage loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	1,283	461
Recorded Investment, Loans Not Past Due	246,680	278,776
Land loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due		0
Recorded Investment, Loans Not Past Due		172
Commercial loans - Secured [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	0	0
Recorded Investment, Loans Not Past Due	24,853	39,574
Commercial loans - Unsecured [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	$ 0	$ 0

Loans Receivable - Troubled Deb

Loans Receivable - Troubled Debt Restructuring (Details) - USD ($)	Dec. 31, 2019	Dec. 31, 2018
Troubled Debt Restructurings
Financing receivable modifications	$ 0	$ 17,000

Loans Receivable - Credit Quali

Loans Receivable - Credit Quality Indicators (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Financing Receivable Credit Quality Indicators
Total loans	$ 1,174,728	$ 1,331,194
Land loans [Member]
Financing Receivable Credit Quality Indicators
Total loans		172
One-to-four family residential real estate loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	55,750	70,371
One to Four Family Residential Real Estate Loans-Owner occupied [Member] [Member]
Financing Receivable Credit Quality Indicators
Total loans	44,989	57,344
One-to-four family residential real estate loans - non-owner occupied loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	10,761	13,027
Multi-family mortgage loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	563,750	619,870
Multi Family Mortgage Loans excluding wholesale [Member] [Member]
Financing Receivable Credit Quality Indicators
Total loans	247,963	279,237
Wholesale commercial lending [Member]
Financing Receivable Credit Quality Indicators
Total loans	315,787	340,633
Nonresidential real estate loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	134,674	152,442
Commercial loans - Secured [Member]
Financing Receivable Credit Quality Indicators
Total loans	24,853	39,574
Commercial loans - Unsecured [Member]
Financing Receivable Credit Quality Indicators
Total loans	70,430	85,343
Commercial Loans - Municipal loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	50,431	62,489
Commercial Leases - Investment Rated [Member]
Financing Receivable Credit Quality Indicators
Total loans	133,839	166,209
Commercial Leases - Below Investment Grade [Member]
Financing Receivable Credit Quality Indicators
Total loans	138,790	133,185
Consumer loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	2,211	1,539
Nonaccrual [Member]
Financing Receivable Credit Quality Indicators
Total loans	800	1,517
Nonaccrual [Member] | Land loans [Member]
Financing Receivable Credit Quality Indicators
Total loans		0
Nonaccrual [Member] | One-to-four family residential real estate loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	512	1,168
Nonaccrual [Member] | One-to-four family residential real estate loans - non-owner occupied loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	79
Nonaccrual [Member] | Multi-family mortgage loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	0
Nonaccrual [Member] | Wholesale commercial lending [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	0
Nonaccrual [Member] | Nonresidential real estate loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	288	270
Nonaccrual [Member] | Commercial loans - Secured [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	0
Nonaccrual [Member] | Commercial loans - Unsecured [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	0
Nonaccrual [Member] | Commercial Loans - Municipal loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	0
Nonaccrual [Member] | Commercial Leases - Investment Rated [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	0
Nonaccrual [Member] | Commercial Leases - Below Investment Grade [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	0
Nonaccrual [Member] | Consumer loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	0
Special Mention [Member]
Financing Receivable Credit Quality Indicators
Total loans	9,847	6,290
Special Mention [Member] | Land loans [Member]
Financing Receivable Credit Quality Indicators
Total loans		0
Special Mention [Member] | One-to-four family residential real estate loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	36	495
Special Mention [Member] | One-to-four family residential real estate loans - non-owner occupied loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	30	0
Special Mention [Member] | Multi-family mortgage loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	0
Special Mention [Member] | Wholesale commercial lending [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	0
Special Mention [Member] | Nonresidential real estate loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	162	281
Special Mention [Member] | Commercial loans - Secured [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	4,810
Special Mention [Member] | Commercial loans - Unsecured [Member]
Financing Receivable Credit Quality Indicators
Total loans	8,346	0
Special Mention [Member] | Commercial Loans - Municipal loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	0
Special Mention [Member] | Commercial Leases - Investment Rated [Member]
Financing Receivable Credit Quality Indicators
Total loans	507	701
Special Mention [Member] | Commercial Leases - Below Investment Grade [Member]
Financing Receivable Credit Quality Indicators
Total loans	761	0
Special Mention [Member] | Consumer loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	5	3
Substandard [Member]
Financing Receivable Credit Quality Indicators
Total loans	1,053	1,028
Substandard [Member] | Land loans [Member]
Financing Receivable Credit Quality Indicators
Total loans		0
Substandard [Member] | One-to-four family residential real estate loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	533	328
Substandard [Member] | One-to-four family residential real estate loans - non-owner occupied loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	35	37
Substandard [Member] | Multi-family mortgage loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	206	216
Substandard [Member] | Wholesale commercial lending [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	0
Substandard [Member] | Nonresidential real estate loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	90	98
Substandard [Member] | Commercial loans - Secured [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	0
Substandard [Member] | Commercial loans - Unsecured [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	342
Substandard [Member] | Commercial Loans - Municipal loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	0
Substandard [Member] | Commercial Leases - Investment Rated [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	0
Substandard [Member] | Commercial Leases - Below Investment Grade [Member]
Financing Receivable Credit Quality Indicators
Total loans	136	0
Substandard [Member] | Consumer loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	53	7
Pass [Member]
Financing Receivable Credit Quality Indicators
Total loans	1,163,028	1,322,359
Pass [Member] | Land loans [Member]
Financing Receivable Credit Quality Indicators
Total loans		172
Pass [Member] | One-to-four family residential real estate loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	43,908	55,353
Pass [Member] | One-to-four family residential real estate loans - non-owner occupied loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	10,696	12,911
Pass [Member] | Multi-family mortgage loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	247,757	279,021
Pass [Member] | Wholesale commercial lending [Member]
Financing Receivable Credit Quality Indicators
Total loans	315,787	340,633
Pass [Member] | Nonresidential real estate loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	134,134	151,793
Pass [Member] | Commercial loans - Secured [Member]
Financing Receivable Credit Quality Indicators
Total loans	24,853	34,764
Pass [Member] | Commercial loans - Unsecured [Member]
Financing Receivable Credit Quality Indicators
Total loans	62,084	85,001
Pass [Member] | Commercial Loans - Municipal loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	50,431	62,489
Pass [Member] | Commercial Leases - Investment Rated [Member]
Financing Receivable Credit Quality Indicators
Total loans	133,332	165,508
Pass [Member] | Commercial Leases - Below Investment Grade [Member]
Financing Receivable Credit Quality Indicators
Total loans	137,893	133,185
Pass [Member] | Consumer loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	$ 2,153	$ 1,529

Loans Receivable - Narrative (D

Loans Receivable - Narrative (Details)	12 Months Ended
	Dec. 31, 2018USD ($)contract	Dec. 31, 2019USD ($)
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Valuation of reserves allocation	$ 23,000
Reserve For Uncollected Loan Interest	72,000	$ 81,000
Financing receivable modifications	17,000	0
Outstanding Commitments To Borrowers Loans Classified As Troubled Debt Restructurings	0
Increased value of allowances for loan losses	$ 0
Number of loans modified and classified as TDRs | contract	0
SEC Schedule, 12-09, Allowance, Loan and Lease Loss [Member]
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Valuation of reserves allocation	$ 0	$ 0

Other Real Estate (Details)

Other Real Estate (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Other Real Estate, Disposals	$ (1,188,000)	$ (2,580,000)
other real estate owned at carrying value before valuation allowance	186,000	1,249,000
Real Estate Owned, Valuation Allowance	0	(23,000)	$ (305,000)
New foreclosed properties	186,000	1,482,000
Other Real Estate, Valuation Adjustments	(38,000)	(27,000)
Real Estate Owned, Valuation Allowance, Valuation Increase	38,000	27,000
reduction in valuation allowance for sales of OREO	(61,000)	(309,000)
Other Real Estate Owned At Carrying Value	186,000	1,226,000	$ 2,351,000
Mortgage Loans in Process of Foreclosure, Amount	237,000	349,000
One to Four Family Residential Real Estate Loans [Member]
other real estate owned at carrying value before valuation allowance	186,000	875,000
Real Estate Owned, Valuation Allowance	0	0
Other Real Estate Owned At Carrying Value	186,000	875,000
Multi Family Mortgage Loans [Member]
other real estate owned at carrying value before valuation allowance	0	276,000
Real Estate Owned, Valuation Allowance	0	0
Other Real Estate Owned At Carrying Value	0	276,000
Nonresidential Real Estate [Member]
other real estate owned at carrying value before valuation allowance	0	74,000
Real Estate Owned, Valuation Allowance	0	0
Other Real Estate Owned At Carrying Value	0	74,000
Land [Member]
other real estate owned at carrying value before valuation allowance	0	24,000
Real Estate Owned, Valuation Allowance	0	(23,000)
Other Real Estate Owned At Carrying Value	0	$ 1,000
Residential Real Estate [Member]
Repossessed assets	$ 0

Premises and Equipment - Year E

Premises and Equipment - Year End (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 56,283	$ 57,232
Accumulated depreciation	(31,937)	(32,027)
Property and equipment, net	24,346	25,205
Depreciation	1,600	1,500
Gain on sale of premises held-for-sale	0	93
Land and land improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	11,918	12,359
Building and building improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	30,585	30,602
Furniture and equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	9,454	10,039
Computer equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 4,326	$ 4,232

Core Deposit Intangible - Sched

Core Deposit Intangible - Schedule of Finite-Lived Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Finite-lived Intangible Assets [Roll Forward]
Amortization	$ (61)	$ (184)

Core Deposit Intangible - Sch_2

Core Deposit Intangible - Schedule of Finite-Lived Intangible Assets Amortization Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Acquired Finite-Lived Intangible Assets [Line Items]
Amortization of intangibles	$ 61	$ 184

Leases - Classification of the

Leases - Classification of the right of use and lease liabilities (Details) $ in Thousands	Dec. 31, 2019USD ($)
Leases [Abstract]
Operating Lease, Right-of-use Asset, Gross	$ 6,694
Operating Lease, Right-of-Use Asset, Accumulated Amortization	(848)
Operating Lease, Right-of-Use Asset	5,846
Operating Lease, Liability	$ 5,846

Leases Lease Cost (Details)

Leases Lease Cost (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)
Leases [Abstract]
Operating Lease, Weighted Average Remaining Lease Term	9 years
Operating Lease, Weighted Average Discount Rate, Percent	3.16%
Operating Lease, Cost	$ 848
Short-term Lease, Cost	112
Sublease Income	(51)
Lease, Cost	909
Operating Lease, Payments	$ 901

Leases - Future minimum payment

Leases - Future minimum payments under non-cancellable operating leases (Details) $ in Thousands	Dec. 31, 2019USD ($)
Leases [Abstract]
2020	$ 906
2021	925
2022	965
2023	950
2024	500
Thereafter	2,724
Total future minimum operating lease payments	6,970
Amounts representing interest	(1,124)
Present value of net future minimum operating lease payments	$ 5,846

Deposits - Schedule of Deposits

Deposits - Schedule of Deposits By Type (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Deposits [Abstract]
Noninterest-bearing demand deposits	$ 210,762	$ 230,041
Interest-bearing NOW accounts	273,168	275,830
Money market accounts	245,610	255,951
Savings deposits	153,183	152,334
Time Deposits	$ 402,034	$ 438,328

Deposits - Time Deposits, By Ma

Deposits - Time Deposits, By Maturity (Details) $ in Thousands	Dec. 31, 2019USD ($)
Deposits [Abstract]
2017	$ 335,937
2018	48,930
2019	13,335
2020	1,645
2021	$ 2,187

Deposits - Narrative (Details)

Deposits - Narrative (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Deposits [Abstract]
Time deposits, $100,000 or more	$ 89.3	$ 81.5

Borrowings (Details)

Borrowings (Details) - USD ($)	Dec. 31, 2019	Dec. 31, 2018
First Mortgage [Member]
Debt Instrument [Line Items]
Collateral	$ 32,500,000
Multi-family mortgage loans [Member]
Debt Instrument [Line Items]
Collateral	$ 406,000,000
Federal Home Loan Bank Advances [Member] | Within 1 year [Member]
Debt Instrument [Line Items]
Borrowings, Contractual Rate	0.00%	2.51%
Borrowings, Amount	$ 0	$ 20,000,000
Federal Home Loan Bank Borrowings [Member]
Debt Instrument [Line Items]
Increase in line of credit	367,700,000
Letter of Credit [Member] | Federal Home Loan Bank Advances [Member]
Debt Instrument [Line Items]
Outstanding balance	$ 0

Income Taxes - Schedule of Inco

Income Taxes - Schedule of Income Tax Expense (Benefit) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Current benefit									$ 1,863	$ 378
Deferred benefit									2,362	6,328
Total income tax expense (benefit)	$ 1,234	$ 1,417	$ 293	$ 1,281	$ 2,803	$ 1,396	$ 1,207	$ 1,300	$ 4,225	$ 6,706

Income Taxes - Schedule of Effe

Income Taxes - Schedule of Effective Income Tax Reconciliation (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Benefit computed at the statutory federal tax rate									$ 3,339	$ 5,470
State taxes and other, net									915	1,564
Bank owned life insurance									(29)	(328)
Total income tax expense (benefit)	$ 1,234	$ 1,417	$ 293	$ 1,281	$ 2,803	$ 1,396	$ 1,207	$ 1,300	$ 4,225	$ 6,706
Effective income tax rate									26.57%	25.74%

Income Taxes - Schedule of Defe

Income Taxes - Schedule of Deferred Tax Assets, Net (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Gross Deferred tax assets:
Allowance for loan losses	$ 2,043	$ 2,279
Alternative minimum tax, general business credit and net operating loss carryforward	4,452	6,669
deferred tax asset,right of use liability	1,565
Tax deductible goodwill	314	561
Other	741	1,256
Total deferred tax assets, gross	9,115	10,765
Gross Deferred tax liabilities:
Net deferred loan origination costs	(1,013)	(1,186)
Purchase accounting adjustments	(1,623)	(1,673)
deferred tax liability, right of use asset	(1,565)
Other	(958)	(649)
Unrealized gain on securities	(83)	(1,022)
Gross deferred tax liabilities:	(5,242)	(4,530)
Net deferred tax asset	$ 3,873	$ 6,235

Income Taxes - Unrecognized Tax

Income Taxes - Unrecognized Tax Balances Roll-forward (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Beginning of year	$ 198	$ 129
Additions based on tax positions related to the current year	62	85
Additions for tax positions of prior years	0	4
Reductions due to the statute of limitations	(16)	(20)
End of year	$ 244	$ 198

Income Taxes - Narrative (Detai

Income Taxes - Narrative (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Deferred tax not recongized	$ 14,900
Deferred Tax Assets, Net	3,873	$ 6,235
Retained Earnings | Accounting Standards Update 2018-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reclassification for the Tax Cuts and Jobs Act	$ (60,000)

Income Taxes - Narrative Tax Ca

Income Taxes - Narrative Tax Carryforwards (Details) $ in Millions	Dec. 31, 2019USD ($)
State and Local Jurisdiction [Member]
Tax Credit Carryforward [Line Items]
Operating loss carryforwards	$ 50.1
Downers Grove National Bank [Member]
Tax Credit Carryforward [Line Items]
Operating loss carryforwards	$ 7.3

Regulatory Matters - Requiremen

Regulatory Matters - Requirements (Details) - BankFinancial NA [Member] - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Capital [Abstract]
Total capital (to risk-weighted assets), Actual, Amount	$ 170,203	$ 178,664
Total capital (to risk-weighted assets), Minimum required To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	83,130	93,430
Total capital (to risk-weighted assets), Minimum Capital Ratios Established under Capital Plans, Amount	103,913	116,787
Tier One Risk Based Capital [Abstract]
Tier 1 (core) capital (to risk-weighted assets), Actual, Amount	162,455	170,194
Tier 1 (core) capital (to risk-weighted assets), Minimum required To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	62,348	70,072
Tier 1 (core) capital (to risk-weighted assets), Minimum Capital Ratios Established under Capital Plans, Amount	83,130	93,430
Tier One Leverage Capital [Abstract]
Tier 1 (core) capital (to adjusted average total assets), Actual, Amount	162,455	170,194
Tier 1 (core) capital (to adjusted average total assets), Minimum required To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	59,666	61,721
Tier 1 (core) capital (to adjusted average total assets), Minimum Capital Ratios Established under Capital Plans, Amount	$ 74,583	$ 77,151
Risk Based Ratios [Abstract]
Total capital (to risk-weighted assets), Actual, Ratio	16.38%	15.30%
Total capital (to risk-weighted assets), For Capital Adequacy Purposes, Ratio	8.00%	8.00%
Total capital (to risk-weighted assets), Minimum Capital Ratios Established under Capital Plans, Ratio	10.00%	10.00%
Tier 1 (core) capital (to risk-weighted assets), Actual, Ratio	15.63%	14.57%
Tier 1 (core) capital (to risk-weighted assets), Minimum required To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	6.00%	6.00%
Tier 1 (core) capital (to risk-weighted assets), Minimum Capital Ratios Established under Capital Plans, Ratio	8.00%	8.00%
CET common tier 1 equity	$ 162,455	$ 170,194
Common Tier 1 to Risk Weighted Assets	15.63%	14.57%
Common Tier 1 Risk Based Capital Required for Capital Adequacy	$ 46,761	$ 52,554
Common Tier 1 Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets	4.50%	4.50%
Common Tier One Capital required to be well capitalized	$ 67,543	$ 75,912
Common Tier One Risk Weighted Assets Required to be Well Capitalized to Risk Weighted Assets	6.50%	6.50%
Leverage Ratios [Abstract]
Tier 1 (core) capital (to adjusted average total assets), Actual, Ratio	10.89%	11.03%
Tier 1 (core) capital (to adjusted average total assets), Minimum required To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	4.00%	4.00%
Tier 1 (core) capital (to adjusted average total assets), Minimum Capital Ratios Established under Capital Plans, Ratio	5.00%	5.00%

Employee Benefit Plans - Employ

Employee Benefit Plans - Employee Stock Ownership Plan (Details) - USD ($)	Mar. 29, 2017	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Jun. 23, 2005
Compensation Related Costs, Retirement and Share Based Payment [Line Items]
ESOP compensation expense		$ 1,100,000
Loan receivable from ESOP					$ 19,600,000
ESOP issued price (usd per share)			$ 10
ESOP cash contributions			$ 0
Employee Stock Ownership Plan (ESOP), Shares in ESOP [Abstract]
Allocated to participants (shares)				885,896
Distributed to participants				(885,896)
Total ESOP shares (shares)	78,362			0
Common Stock [Member]
Compensation Related Costs, Retirement and Share Based Payment [Line Items]
Repayments of Debt, Equity Instrument Consideration, Shares Issued	753,490
ESOP shares purchased (shares)			1,957,300
Share Acquisition Loan [Member]
Compensation Related Costs, Retirement and Share Based Payment [Line Items]
Loans Payable			$ 0

Employee Benefit Plans - Empl_2

Employee Benefit Plans - Employee Stock Ownership Plan - Profit Sharing 401(k) Plan (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Retirement Benefits [Abstract]
Age for eligibility for Employee Benefits	21 years
Employee benefit plans, requisite time for service	1 year
Employee matching ratio	50.00%
Maximum annual contribution per employee	6.00%
Contribution plan expenses	$ 320	$ 506

Equity Incentive Plans - Narrat

Equity Incentive Plans - Narrative (Details) - USD ($)	Jun. 27, 2006	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock available for grant		0
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant		0
Share-based compensation expense			$ 0
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense		$ 0	$ 0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Outstanding, Weighted Average Remaining Contractual Terms				0 days
Restricted Stock [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period		3 years
Restricted Stock [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period		5 years
2006 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (shares)	3,425,275
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period	10 years

Equity Incentive Plans - Schedu

Equity Incentive Plans - Schedule of Restricted Stock Activity (Details) - Restricted Stock [Member] - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Shares outstanding, beginning balance (shares)	940
Shares granted (shares)	0
Shares vested (shares)	(694)
Shares forfeited (shares)	(246)
Shares outstanding, ending balance (shares)	0	940
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Shares outstanding, beginning balance, Weighted Average Fair Value at Grant Date (usd per share)	$ 8.14
Shares granted, Weighted Average Fair Value at Grant Date (usd per share)	0
Shares vested, Weighted Average Fair Value at Grant Date (usd per share)	8.14
Shares forfeited, Weighted Average Fair Value at Grant Date (usd per share)	8.14
Shares outstanding, ending balance, Weighted Average Fair Value at Grant Date (usd per share)	$ 0	$ 8.14
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Outstanding, Weighted Average Remaining Contractual Terms		0 days
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Outstanding	$ 0	$ 14

Loan Commitments and Other Of_3

Loan Commitments and Other Off-Balance Sheet Activities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Guarantor Obligations [Line Items]
Duration of extension	60 days
Commitments to extend credit [Member]
Guarantor Obligations [Line Items]
Notional Or Contractual Credit Extension Commitments	$ 19,737	$ 75,180
Fixed-rate loan commitments	11,900
Standby letters of credit [Member]
Guarantor Obligations [Line Items]
Notional Or Contractual Credit Extension Commitments	6,119	5,965
Unused lines of credit [Member]
Guarantor Obligations [Line Items]
Notional Or Contractual Credit Extension Commitments	$ 149,771	$ 152,554
Minimum [Member] | Commitments to extend credit [Member]
Guarantor Obligations [Line Items]
Fixed interest rate	3.15%
Maturity period	1 year
Maximum [Member] | Commitments to extend credit [Member]
Guarantor Obligations [Line Items]
Fixed interest rate	5.25%
Maturity period	30 years

Fair Value - Financial Assets A

Fair Value - Financial Assets Accounted for at Fair Value (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	$ 60,193	$ 88,179
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling within One Year, Fair Value	48,768
Certificates of deposit [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	48,666	73,507
Equity Funds [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value		0
Residential Mortgage Backed Securities [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	8,037	10,478
Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Fair Value	8,037
Collateralized Debt Obligations [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	2,977	3,685
Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Fair Value	2,977
Municipal Bonds [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	513	509
Nonrecurring [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	60,193	88,179
Nonrecurring [Member] | Certificates of deposit [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	48,666	73,507
Nonrecurring [Member] | Mortgage-backed securities - residential [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	8,037	10,478
Nonrecurring [Member] | Collateralized mortgage obligations - residential [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	2,977	3,685
Nonrecurring [Member] | Municipal Securities [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	513	509
Nonrecurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	0	0
Nonrecurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Certificates of deposit [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	0	0
Nonrecurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Mortgage-backed securities - residential [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	0	0
Nonrecurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Collateralized mortgage obligations - residential [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	0	0
Nonrecurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Municipal Securities [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	0	0
Nonrecurring [Member] | Significant Observable Inputs (Level 2) [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	60,193	88,179
Nonrecurring [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	0	0
Nonrecurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | Certificates of deposit [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	0	0
Nonrecurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | Mortgage-backed securities - residential [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	0	0
Nonrecurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | Collateralized mortgage obligations - residential [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	0	0
Nonrecurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | Municipal Securities [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	0	0
Estimate of Fair Value Measurement [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	60,193	88,179
Estimate of Fair Value Measurement [Member] | Significant Observable Inputs (Level 2) [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	60,193	88,179
Estimate of Fair Value Measurement [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	$ 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, 2019	Dec. 31, 2018
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value, Other real estate owned		$ 0
Mortgage servicing rights	$ 335	420
Nonrecurring [Member] | Nonresidential real estate loans [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value, Impaired loans		243
Nonrecurring [Member] | Land loans [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value, Other real estate owned		1
Nonrecurring [Member] | Other investments
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Other investments		3,427
Nonrecurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Nonresidential real estate loans [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value, Impaired loans		0
Nonrecurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Land loans [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value, Other real estate owned		0
Nonrecurring [Member] | Significant Observable Inputs (Level 2) [Member] | Nonresidential real estate loans [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value, Impaired loans		0
Nonrecurring [Member] | Significant Observable Inputs (Level 2) [Member] | Land loans [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value, Other real estate owned		0
Nonrecurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | Other investments
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Other investments		$ 3,427

Fair Value - Level 3 Fair Value

Fair Value - Level 3 Fair Value Measurements for Financial Instruments on a Non-recurring Basis (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2018USD ($)	Dec. 31, 2019USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	$ 88,179	$ 60,193
Fair Value, Other real estate owned	0
Fair value of mortgage servicing rights	$ 420	$ 335
Land [Member] | Sales comparison [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Measurements, Valuation Processes, Description	Sales comparison
Fair Value Measurements, Sensitivity Analysis, Description	Discount applied to valuation
Land [Member] | Sales comparison [Member] | Impaired Loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other Real Estate Owned, Measurement Input		0.123
Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	$ 88,179	$ 60,193
Fair Value, Measurements, Nonrecurring [Member] | Nonresidential real estate loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Impaired loans	243
Fair Value, Measurements, Nonrecurring [Member] | Land [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Other real estate owned	1
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	0	$ 0
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Nonrecurring [Member] | Nonresidential real estate loans [Member] | Impaired Loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Impaired loans	243
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Nonrecurring [Member] | Land [Member] | Other Real Estate Owned [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Other real estate owned	$ 1
Measurement Input, Discount Rate [Member] | One to Four Family Residential Real Estate Loans [Member] | Sales comparison [Member] | Weighted Average [Member] | Other Real Estate Owned [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other Real Estate Owned, Measurement Input		0.0560
Measurement Input, Comparability Adjustment [Member] | Nonresidential real estate loans [Member] | Sales comparison [Member] | Minimum [Member] | Other Real Estate Owned [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other Real Estate Owned, Measurement Input		0.1522
Measurement Input, Comparability Adjustment [Member] | Nonresidential real estate loans [Member] | Sales comparison [Member] | Maximum [Member] | Other Real Estate Owned [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other Real Estate Owned, Measurement Input		(0.0366)
Measurement Input, Comparability Adjustment [Member] | Nonresidential real estate loans [Member] | Sales comparison [Member] | Weighted Average [Member] | Other Real Estate Owned [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other Real Estate Owned, Measurement Input		(0.1100)

Fair Value - Carrying Amount an

Fair Value - Carrying Amount and Estimated Fair Value of Finanical Instruments (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
SEC Schedule, 12-09, Valuation Allowances and Reserves, Amount		$ (23)
Fair value of mortgage servicing rights	$ 335	420
Financial assets
Cash and cash equivalents, carrying amount	190,325	98,204	$ 127,592
Cash and Due from Banks	9,785	13,805
Interest-bearing Deposits in Banks and Other Financial Institutions	180,540	84,399
Marketable Securities	60,193	88,179
Securities, carrying amount	60,193	88,179
Loans receivable, net of allowance for loan losses, carrying amounts	1,168,008	1,323,793
FHLBC stock, carrying amount	7,490	8,026
Accrued interest receivable, carrying amount	4,563	4,952
Financial liabilities
Noninterest-bearing demand deposits	210,762	230,041
Savings deposits	153,183	152,334
Time Deposits	402,034	438,328
Borrowings	61	21,049
Estimated Fair Value [Member]
Financial assets
Cash and cash equivalents, fair value	190,325	98,204
Securities, carrying amount	60,193	88,179
Loans receivable, net of allowance for loan losses, fair value	1,177,459	1,315,855
Accounts interest receivable, fair value	4,563	4,952
Financial liabilities
Certificates of deposit, fair value	402,914	436,598
Borrowings, fair value	61	21,050
Estimated Fair Value [Member] | Fair Value, Inputs, Level 1 [Member]
Financial assets
Loans receivable, net of allowance for loan losses, fair value	0	0
Accounts interest receivable, fair value	0	0
Financial liabilities
Certificates of deposit, fair value	0	0
Borrowings, fair value	0	0
Estimated Fair Value [Member] | Level 2 [Member]
Financial assets
Securities, carrying amount	60,193	88,179
Loans receivable, net of allowance for loan losses, fair value	0	0
Accounts interest receivable, fair value	252	249
Financial liabilities
Certificates of deposit, fair value	402,914	436,598
Borrowings, fair value	61	21,050
Estimated Fair Value [Member] | Fair Value, Inputs, Level 3 [Member]
Financial assets
Cash and cash equivalents, fair value	0	0
Securities, carrying amount	0	0
Loans receivable, net of allowance for loan losses, fair value	1,177,459	1,315,855
Accounts interest receivable, fair value	4,311	4,703
Financial liabilities
Certificates of deposit, fair value	0	0
Borrowings, fair value	0	0
Equity Funds [Member]
Financial assets
Securities, carrying amount		0
Fair Value, Measurements, Nonrecurring [Member]
Financial assets
Securities, carrying amount	60,193	88,179
Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 1 [Member]
Financial assets
Securities, carrying amount	0	0
Fair Value, Measurements, Nonrecurring [Member] | Level 2 [Member]
Financial assets
Securities, carrying amount	60,193	88,179
Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member]
Financial assets
Securities, carrying amount	0	0
Fair Value, Measurements, Nonrecurring [Member] | Collateralized Mortgage Obligations Residential [Member]
Financial assets
Securities, carrying amount	2,977	3,685
Fair Value, Measurements, Nonrecurring [Member] | Collateralized Mortgage Obligations Residential [Member] | Fair Value, Inputs, Level 1 [Member]
Financial assets
Securities, carrying amount	0	0
Fair Value, Measurements, Nonrecurring [Member] | Collateralized Mortgage Obligations Residential [Member] | Fair Value, Inputs, Level 3 [Member]
Financial assets
Securities, carrying amount	$ 0	$ 0

Fair Value - Narratives (Detail

Fair Value - Narratives (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans carrying amount	$ 0
other real estate owned with an allowance at carrying value before valuation allowance	0
Impaired loans, valuation allowance	27,000
Other real estate owned at carrying value	186,000	$ 1,226,000	$ 2,351,000
Real Estate Acquired Through Foreclosure Fair Value		0
Real Estate Owned, Valuation Allowance, Valuation Increase	38,000	27,000
Other Real Estate, Valuation Adjustments	38,000	27,000
Fair value of mortgage servicing rights	$ 335,000	$ 420,000

Revenue From Contracts With C_3

Revenue From Contracts With Customers (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Revenue from External Customer [Line Items]
Deposit service charges and fees									$ 3,844	$ 3,968
Loan servicing fees									451	439
Gain on sale of equity securities									295	3,558
Unrealized gains on equity securities									0	3,427
Gain on sale of premises held-for-sale									0	93
Gain (Loss) on Disposition of Other Assets									(44)
Earnings on bank-owned life insurance									136	174
Bank-owned life insurance death benefit									0	1,389
Other									497	635
Total noninterest income	$ 1,648	$ 1,474	$ 1,426	$ 1,624	$ 8,674	$ 1,570	$ 3,094	$ 1,539	6,172	14,877
Bank Servicing [Member]
Revenue from External Customer [Line Items]
Trust and insurance commissions and annuities income									844	$ 937
Credit and Debit Card
Revenue from External Customer [Line Items]
Deposit service charges and fees									$ 1,500

Company Only Condensed Financ_3

Company Only Condensed Financial Information - Statements of Financial Condition (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Assets
Deferred Tax Assets, Net	$ 3,873	$ 6,235
Other assets	10,086	10,696
Total assets	1,488,015	1,585,325
Liabilities and Stockholders' Equity
Total stockholders’ equity	174,372	187,150	$ 197,634
Total liabilities and stockholders' equity	1,488,015	1,585,325
Parent Company [Member]
Assets
Cash in subsidiary	6,864	11,227	$ 6,393
Investment in subsidiary	164,847	173,253
Deferred Tax Assets, Net	558	1,999
Other assets	2,115	3,317
Total assets	174,384	189,796
Liabilities and Stockholders' Equity
Accrued expenses and other liabilities	12	2,646
Total stockholders’ equity	174,372	187,150
Total liabilities and stockholders' equity	$ 174,384	$ 189,796

Company Only Condensed Financ_4

Company Only Condensed Financial Information - Statements of Operations (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Condensed Financial Statements, Captions [Line Items]
Interest income	$ 12,627	$ 13,242	$ 13,103	$ 13,219	$ 13,103	$ 12,965	$ 12,981	$ 13,021	$ 52,191	$ 52,070
Other expense	(9,562)	(9,509)	(9,472)	(10,098)	(11,155)	(9,425)	(10,215)	(9,959)	(38,641)	(40,754)
Income (loss) before income taxes	4,624	5,341	1,100	4,832	10,219	5,133	5,837	4,859	15,897	26,048
Income tax expense	$ 1,234	$ 1,417	$ 293	$ 1,281	$ 2,803	$ 1,396	$ 1,207	$ 1,300	4,225	6,706
Parent Company [Member]
Condensed Financial Statements, Captions [Line Items]
Dividends from subsidiary									21,200	36,044
Other expense									(1,600)	(1,573)
Income (loss) before income taxes									19,600	34,471
Income tax expense									(433)	(398)
Loss before equity in undistributed subsidiary income									20,033	34,869
Equity in undistributed subsidiary excess distributions									(8,361)	(15,527)
Net income (loss)									$ 11,672	$ 19,342

Company Only Condensed Financ_5

Company Only Condensed Financial Information - Statements of Cash Flows (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Adjustments:
Change in other assets	$ 3,864	$ 1,694
Net Cash Provided by (Used in) Operating Activities	21,374	20,685
Cash flows from financing activities
Repurchase and retirement of common stock	(18,139)	(23,284)
Cash dividends paid on common stock	(6,266)	(6,449)
Net cash used in financing activities	(113,429)	(58,133)
Parent Company [Member]
Cash flows from operating activities
Net income (loss)	11,672	19,342
Adjustments:
Equity in undistributed subsidiary excess distributions	8,361	15,527
Change in other assets	2,643	67
Change in accrued expenses and other liabilities	(2,634)	(369)
Net Cash Provided by (Used in) Operating Activities	20,042	34,567
Cash flows from financing activities
Repurchase and retirement of common stock	(18,139)	(23,284)
Cash dividends paid on common stock	(6,266)	(6,449)
Net cash used in financing activities	(24,405)	(29,733)
Net change in cash in subsidiary	(4,363)	4,834
Beginning cash in subsidiary	11,227	6,393
Ending cash in subsidiary	$ 6,864	$ 11,227

Selected Quarterly Financial _3

Selected Quarterly Financial Data (unaudited) (unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Quarterly Financial Information Disclosure [Abstract]
Interest income	$ 15,732	$ 16,628	$ 16,522	$ 16,526	$ 16,146	$ 15,373	$ 15,020	$ 14,748	$ 65,408	$ 61,287
Interest expense	3,105	3,386	3,419	3,307	3,043	2,408	2,039	1,727	13,217	9,217
Net interest income	12,627	13,242	13,103	13,219	13,103	12,965	12,981	13,021	52,191	52,070
Provision for (recovery of) loan losses	89	(134)	3,957	(87)	403	(23)	23	(258)	3,825	145
Net interest income	12,538	13,376	9,146	13,306	12,700	12,988	12,958	13,279	48,366	51,925
Noninterest Income	1,648	1,474	1,426	1,624	8,674	1,570	3,094	1,539	6,172	14,877
Noninterest expense	9,562	9,509	9,472	10,098	11,155	9,425	10,215	9,959	38,641	40,754
Income (loss) before income taxes	4,624	5,341	1,100	4,832	10,219	5,133	5,837	4,859	15,897	26,048
Income tax expense	1,234	1,417	293	1,281	2,803	1,396	1,207	1,300	4,225	6,706
Net income (loss)	$ 3,390	$ 3,924	$ 807	$ 3,551	$ 7,416	$ 3,737	$ 4,630	$ 3,559	$ 11,672	$ 19,342
Earnings Per Share, Basic	$ 0.22	$ 0.26	$ 0.05	$ 0.22		$ 0.22	$ 0.26	$ 0.20	$ 0.75	$ 1.11

Selected Quarterly Financial _4

Selected Quarterly Financial Data (unaudited) (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Quarterly Financial Information Disclosure [Abstract]
Net income	$ 3,390	$ 3,924	$ 807	$ 3,551	$ 7,416	$ 3,737	$ 4,630	$ 3,559	$ 11,672	$ 19,342
Earnings Per Share, Basic and Diluted	$ 0.22				$ 0.44
Interest income	$ 12,627	$ 13,242	$ 13,103	$ 13,219	$ 13,103	$ 12,965	$ 12,981	$ 13,021	52,191	$ 52,070
Equity Securities, FV-NI, Realized Gain					$ 3,600				$ 3,400
Compensation expense	$ 1,000