Hamilton Bancorp 10-Q 13 Aug 18 2019 Q1 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	3 Months Ended
	Jun. 30, 2018	Aug. 13, 2018
Document Information [Line Items]
Entity Registrant Name	HAMILTON BANCORP, INC.
Entity Central Index Key	1,551,739
Trading Symbol	hbk
Current Fiscal Year End Date	--03-31
Entity Filer Category	Smaller Reporting Company
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Well-known Seasoned Issuer	No
Entity Common Stock, Shares Outstanding (in shares)		3,416,414
Document Type	10-Q
Document Period End Date	Jun. 30, 2018
Document Fiscal Year Focus	2,019
Document Fiscal Period Focus	Q1
Amendment Flag	false

Consolidated Statements of Fina

Consolidated Statements of Financial Condition (Current Period Unaudited) - USD ($)	Jun. 30, 2018	Mar. 31, 2018
Assets
Cash and due from banks	$ 28,820,533	$ 15,488,396
Federal funds sold	7,238,852	7,880,019
Cash and cash equivalents	36,059,385	23,368,415
Certificates of deposit held as investment	499,167	499,189
Securities available for sale, at fair value	72,638,697	75,404,136
Federal Home Loan Bank stock, at cost	2,994,900	3,122,400
Loans	381,044,039	390,420,885
Allowance for loan losses	(2,836,987)	(2,821,903)
Net loans and leases	378,207,052	387,598,982
Premises and equipment, net	3,928,511	3,945,825
Foreclosed real estate	457,778	457,778
Accrued interest receivable	1,470,881	1,468,382
Bank-owned life insurance	17,569,375	17,455,850
Income taxes refundable	40,000	40,000
Goodwill and other intangible assets	9,145,248	9,176,764
Other assets	2,264,055	2,995,741
Total Assets	525,275,049	525,533,462
Liabilities
Noninterest-bearing deposits	27,485,033	29,557,943
Interest-bearing deposits	376,989,028	375,585,032
Total deposits	404,474,061	405,142,975
Borrowings	59,599,093	60,672,140
Advances by borrowers for taxes and insurance	2,707,378	1,962,665
Other liabilities	3,575,171	3,679,550
Total liabilities	470,355,703	471,457,330
Commitments and contingencies
Shareholders' Equity
Common stock, $.01 par value, 100,000,000 shares authorized. Issued and outstanding: 3,416,414 shares at June 30, 2018 and 3,407,613 shares at March 31, 2018	34,164	34,076
Additional paid in capital	32,239,049	32,113,534
Retained earnings	26,799,923	25,920,490
Unearned ESOP shares	(2,073,680)	(2,073,680)
Accumulated other comprehensive loss	(2,080,110)	(1,918,288)
Total shareholders' equity	54,919,346	54,076,132
Total Liabilities and Shareholders' Equity	$ 525,275,049	$ 525,533,462

Consolidated Statements of Fin3

Consolidated Statements of Financial Condition (Current Period Unaudited) (Parentheticals) - $ / shares	Jun. 30, 2018	Mar. 31, 2018
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	100,000,000	100,000,000
Common stock, shares issued (in shares)	3,416,414	3,407,613
Common stock, outstanding (in shares)	3,416,414	3,407,613

Consolidated Statements of Oper

Consolidated Statements of Operations (Unaudited) - USD ($)	3 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Interest revenue
Loans, including fees	$ 4,407,943	$ 3,848,013
U.S. treasuries, government agencies and FHLB stock	53,689	32,684
Municipal and corporate bonds	94,411	113,969
Mortgage-backed securities	275,008	338,906
Federal funds sold and other bank deposits	110,719	54,408
Total interest revenue	4,941,770	4,387,980
Interest expense
Deposits	875,064	660,458
Borrowed funds	258,588	134,270
Total interest expense	1,133,652	794,728
Net interest income	3,808,118	3,593,252
Provision for loan losses	60,000	160,000
Net interest income after provision for loan losses	3,748,118	3,433,252
Noninterest revenue
Service charges	120,584	119,199
Gain on sale of loans held for sale	9,542
Earnings on bank-owned life insurance	113,525	122,576
Other	47,123	24,717
Total noninterest revenue	290,774	266,492
Noninterest expenses
Salaries	1,467,581	1,459,998
Employee benefits	411,842	393,174
Occupancy	271,828	260,838
Advertising	17,024	27,028
Furniture and equipment	90,299	83,984
Data processing	192,654	164,850
Legal services	56,338	101,890
Other professional services	98,316	180,302
Deposit insurance premiums	101,109	57,128
Foreclosed real estate expense and losses		1,186
Other operating	452,468	422,647
Total noninterest expense	3,159,459	3,153,025
Income before income taxes	879,433	546,719
Income tax expense		154,342
Net Income	$ 879,433	$ 392,377
Net income per common share:
Basic (in dollars per share)	$ 0.27	$ 0.12
Diluted (in dollars per share)	$ 0.27	$ 0.12

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Unaudited) - USD ($)	3 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Net income	$ 879,433	$ 392,377
Other comprehensive (loss) income:
Unrealized (loss) gain on investment securities available for sale	(259,861)	549,343
Reclassification adjustment for realized loss (gain) on investment securities available for sale included in net income
Total unrealized (loss) gain on investment securities available for sale	(259,861)	549,343
Unrealized gain (loss) on derivative transactions	98,039	(209,948)
Income tax expense relating to investment securities available for sale and derivative transactions		133,874
Other comprehensive (loss) income	(161,822)	205,521
Total comprehensive income	$ 717,611	$ 597,898

Consolidated Statements of Chan

Consolidated Statements of Changes In Shareholders' Equity (Unaudited) - USD ($)	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Unearned ESOP Shares [Member]	AOCI Attributable to Parent [Member]	Total
Balances at Mar. 31, 2017	$ 34,111	$ 31,656,235	$ 31,730,673	$ (2,221,800)	$ (1,407,989)	$ 59,791,230
Net income			392,377			392,377
Unrealized gain on available for sale securities, net of tax effect					332,655	332,655
Unrealized gain on derivative transactions, net of tax effect					(43,500)	(43,500)
Stock based compensation - options		57,392				57,392
Restricted stock - compensation and activity		57,819				57,819
Balances at Jun. 30, 2017	34,111	31,771,446	32,123,050	(2,221,800)	(1,118,834)	60,587,973
Balances at Mar. 31, 2018	34,076	32,113,534	25,920,490	(2,073,680)	(1,918,288)	54,076,132
Net income			879,433			879,433
Unrealized gain on available for sale securities, net of tax effect					(259,861)	(259,861)
Unrealized gain on derivative transactions, net of tax effect					98,039	98,039
Stock based compensation - options		61,514				61,514
Restricted stock - compensation and activity	88	64,001				64,089
Balances at Jun. 30, 2018	$ 34,164	$ 32,239,049	$ 26,799,923	$ (2,073,680)	$ (2,080,110)	$ 54,919,346

Consolidated Statements of Cha7

Consolidated Statements of Changes In Shareholders' Equity (Unaudited) (Parentheticals) - USD ($)	3 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
AOCI Attributable to Parent [Member]
Unrealized loss on available for sale securities, tax effect	$ 0
Unrealized gain on derivative transactions, tax effect	$ 0
Unrealized loss on available for sale securities, tax effect		$ 216,688
Unrealized gain on derivative transactions, tax effect		$ (82,814)

Consolidated Statements of Cash

Consolidated Statements of Cash Flows (Unaudited) - USD ($)	3 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Cash flows from operating activities
Interest received	$ 5,014,653	$ 4,515,279
Fees and commissions received	167,707	143,916
Interest paid	(1,286,649)	(1,066,546)
Cash paid to suppliers and employees	(2,291,909)	(2,393,508)
Origination of loans held for sale	(453,100)
Proceeds from sale of loans held for sale	462,642
Net cash provided by operating activities	1,613,344	1,199,141
Cash flows from investing activities
Proceeds from maturing and called securities available for sale, including principal pay downs	4,332,019	4,126,059
Purchase of investment securities available for sale	(1,985,000)
Redemption of Federal Home Loan Bank stock	127,500
Loans made, net of principal repayments	9,415,130	(14,747,850)
Purchase of premises and equipment	(67,026)	(121,649)
Net cash provided (used) by investing activities	11,822,623	(10,743,440)
Cash flows from financing activities
Deposits	(587,837)	(428,522)
Advances by borrowers for taxes and insurance	744,713	974,614
Proceeds from borrowings		11,550,000
Payments of borrowings	(1,000,000)	(11,553,111)
Interest rate swap on FHLB borrowings	98,039	(126,314)
Issuance of restricted stock	88
Net cash (used) provided by financing activities	(744,997)	416,667
Net increase (decrease) in cash and cash equivalents	12,690,970	(9,127,632)
Cash and cash equivalents at beginning of period	23,368,415	29,353,921
Cash and cash equivalents at end of period	36,059,385	20,226,289
Net income	879,433	392,377
Amortization of premiums on certificates of deposit	22	23
Amortization of premiums on securities	158,560	238,628
Write-down of foreclosed real estate		1,186
Loan discount accretion	(75,104)	(450)
Deposit premium amortization	(81,077)	(125,009)
Borrowing premium amortization	(73,047)	(146,560)
Core deposit intangible asset amortization	31,516	31,516
Premises and equipment depreciation and amortization	84,340	79,517
Stock based compensation	125,515	115,212
Provision for credit losses	60,000	160,000
Decrease (increase) in
Accrued interest receivable	(2,499)	(108,369)
Cash surrender value of life insurance	(113,525)	(122,576)
Income taxes refundable and deferred income taxes		154,342
Other assets	731,685	229,464
Increase (decrease) in
Accrued interest payable	1,127	(249)
Deferred loan origination fees	(8,096)	(2,533)
Other liabilities	(105,506)	302,622
Net cash provided by operating activities	1,613,344	1,199,141
Noncash investing activity
Real estate acquired through foreclosure		$ 17,305

Note 1 - Nature of Operations a

Note 1 - Nature of Operations and Summary of Significant Accounting Policies	3 Months Ended
	Jun. 30, 2018
Notes to Financial Statements
Organization, Consolidation, Basis of Presentation, Business Description and Accounting Policies [Text Block]	Note 1: Nature of Operations and Summary of Significant Accounting Policies Nature of Operations Hamilton Bancorp, Inc. (the “Company”) was incorporated on June 7, 2012 October 10, 2012, 3,703,000 $10.00 $35,580,000, $1,450,000. 8.0% 296,240 October 12, 2012. On December 21, 2017, On May 13, 2016, October 12, 2015, nineteen twenty-five $19.25 $25.7 On September 11, 2015, April 15, 2015, thirty $30.00 $15.4 Hamilton Bancorp is a holding company that operates a community bank with seven The accompanying unaudited consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) for interim financial reporting and with instructions for Form 10–Q March 31, 2018 three June 30, 2018 not may March 31, 2019, 10 March 31, 2018. Summary of Significant Accounting Policies The accounting and reporting policies of Hamilton Bancorp, Inc. and Subsidiary (“Hamilton”) conform to accounting principles generally accepted in the United States of America (“U.S. GAAP”) and to general practices in the banking industry. The more significant policies follow: Principles of Consolidation Use of Estimates. Investment Securities. may June 30, 2018 March 31, 2018 Investment securities designated as available for sale are stated at estimated fair value based on quoted market prices. They represent those securities which management may may In estimating other-than-temporary impairment losses, management considers the length of time and the extent to which the fair value has been less than cost, the financial condition and near-term prospects of the issuer, and the intent and ability of the Bank to retain its investment in the issuer for a period of time sufficient to allow for any anticipated recovery in fair value. Loans Held For Sale . Loans Receivable. Loans are reported at their outstanding unpaid principal balance adjusted for the allowance for loan loss, premiums on loans acquired, and/or any deferred fees or costs on originated loans. Interest revenue is accrued on the unpaid principal balance. Loan origination fees and the direct costs of underwriting and closing loans are recognized over the life of the related loan as an adjustment to yield using a method that approximates the interest method. Any differences that arise from prepayment will result in a recalculation of the effective yield. Loans are generally placed on nonaccrual status when they are 90 not Loans are considered impaired when, based on current information, management considers it unlikely that collection of principal and interest payments will be made according to contractual terms. If collection of principal is evaluated as doubtful, all payments are applied to principal. Impaired loans are measured: (i) at the present value of expected cash flows discounted at the loan’s effective interest rate; (ii) at the observable market price; or (iii) at the fair value of the collateral if the loan is collateral dependent. If the measure of the impaired loan is less than the recorded investment in the loan, an impairment is recognized through an allocation of the allowance for loan losses and corresponding provision for loan losses. Generally, identified impairments are charged-off against the allowance for loan losses. Troubled debt restructurings are loans for which Hamilton, for legal or economic reasons related to a debtor’s financial difficulties, has granted a concession to the debtor that it otherwise would not ● Reduction of the stated interest rate; ● Extension of the maturity date or dates at a stated interest rate lower than the current market rate for new debt with similar risk; ● Reduction of the face amount or maturity amount of the debt as stated in the instrument or other agreement; or ● Reduction of accrued interest. Allowance for Loan Losses. The allowance for loan losses is increased by provisions charged to income and reduced by charge-offs, net of recoveries. Management’s periodic evaluation of the adequacy of the allowance is based on the Bank’s past loan loss experience, known and inherent risks in the loan portfolio, adverse situations that may 36 48 Management considers a number of factors in estimating the required level of the allowance. These factors include: historical loss experience in the loan portfolios; the levels and trends in past-due and nonaccrual loans; the status of nonaccrual loans and other loans identified as having the potential for further deterioration; credit risk and industry concentrations; trends in loan volume; the effects of any changes in lending policies and procedures or underwriting standards; and a continuing evaluation of the economic environment. As part of the estimation process, management keeps the net charge-off history as a percentage of loans, as it pertains to each loan segment, constant across all risk ratings and alters the qualitative factors either up or down based upon the respective risk rating for each loan segment. Foreclosed Real Estate. Goodwill and Other Intangible Assets. may eight not Derivative Financial Instruments and Hedging Activities . For derivatives qualifying as cash flow hedges, the Company also documents its assessment, both at hedge inception and on an ongoing basis, of whether the derivatives that are used in hedging transactions are highly effective in offsetting changes in fair values or cash flows of hedged items. The effective portion of changes in fair value of derivatives that are designated and qualify as cash flow hedges is recognized in the consolidated statement of comprehensive income (loss). The gain or loss relating to the ineffective portion is recognized immediately in the consolidated statement of operations as a gain or loss. When a hedging instrument expires or is sold, or when a hedge no no For derivative instruments designated as fair-value hedges, the change in fair value of the derivative is recognized in the consolidated statement of operations under the same heading as the change in fair value of the hedged item for the portion attributable to the hedged risk. For accounting purposes, if the derivative is highly effective, the change in fair values relating to the asset or liability and the hedged item will offset one no Gains (losses) on derivatives representing either hedge components excluded from the assessment of effectiveness or hedge ineffectiveness are recognized in earnings. Revenue from Contracts with Customers . 606, 606” 606, not not 606. not 606 Stock Based Compensation. Income Taxes. not not Earnings Per Common Share.

Note 2 - New Accounting Pronoun

Note 2 - New Accounting Pronouncements	3 Months Ended
	Jun. 30, 2018
Notes to Financial Statements
New Accounting Pronouncements and Changes in Accounting Principles [Text Block]	Note 2: New Accounting Pronouncements Recent Accounting Pronouncements ASU No. 2017 12, 1 2 December 15, 2018; not 2017 12 ASU No. 2017 08, Receivables—Nonrefundable Fees and Other Costs (Subtopic 310 20 not December 15, 2018. not ASU No. 2017 04, 2 not December 15, 2019. January 1, 2017. not 2017 04 ASU No. 2017 01, 805 not December 15, 2017, April 1, 2018 not ASU No. 2016 15, 230 may 1 2 may December 15, 2017, April 1, 2018, not not ASU 2016 13, December 15, 2019, third 2016 13. No. 2016 13 ASU 2016 02, Leases (Topic 842 12 first December 15, 2018. In July 2018, 2016 02 842 ASU No. 2018 10 842, 2016 02 2016 02. sixteen 2016 02 2018 10 ASU No. 2018 11, (Topic 842 – Targeted Improvement s . 2016 02 2016 02 not 1 2 2016 02 ASU No. 2016 01, Financial Instruments – Recognition and Measurement of Financial Assets and Liabilities . third December 15, 2017, April 1, 2018. no June 30, 2018 not first 2019, not ASU 2014 09, 606 2014 09 2014 09 The guidance in this ASU affects any entity that either enters into contracts with customers to transfer goods or services or enters into contracts for the transfer of nonfinancial assets. This ASU does not not not December 15, 2017, April 1, 2018 not

Note 3 - Earnings Per Share

Note 3 - Earnings Per Share	3 Months Ended
	Jun. 30, 2018
Notes to Financial Statements
Earnings Per Share [Text Block]	Note 3 : Earnings per Share Basic earnings per share is computed by dividing income available to common shareholders by the weighted average number of common shares outstanding for the period. Weighted average shares exclude unallocated ESOP shares. Diluted earnings per share reflects the potential dilution that could occur if securities or other contracts to issue common stock were exercised or converted into common stock or resulted in the issuance of common stock that then shared in the earnings of the entity. Both the basic and diluted earnings per share for the three June 30, 2018 2017 Three Months Ended Three Months Ended June 30, 2018 June 30, 2017 Net income $ 879,433 $ 392,377 Weighted average common shares outstanding - basic 3,209,046 3,188,895 Weighted average common shares outstanding - diluted 3,230,287 3,198,999 Income per common share - basic and diluted $ 0.27 $ 0.12 Anti-dilutive shares 159,019 121,686

Note 4 - Investment Securities

Note 4 - Investment Securities Available for Sale	3 Months Ended
	Jun. 30, 2018
Notes to Financial Statements
Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block]	Note 4: Investment Securities Available for Sale The amortized cost and fair value of securities at June 30, 2018 March 31, 2018, Gross Gross Amortized unrealized unrealized Fair June 30, 2018 cost gains losses value U.S. government agencies $ 2,750,087 $ - $ 34,435 $ 2,715,652 Municipal bonds 12,405,766 - 772,923 11,632,843 Corporate bonds 2,000,000 - 16,750 1,983,250 Mortgage-backed securities 58,605,648 4,212 2,302,908 56,306,952 $ 75,761,501 $ 4,212 $ 3,127,016 $ 72,638,697 Gross Gross Amortized unrealized unrealized Fair March 31, 2018 cost gains losses value U.S. government agencies $ 2,753,346 $ - $ 34,697 $ 2,718,649 Municipal bonds 12,435,068 - 729,077 11,705,991 Corporate bonds 2,000,000 - 45,924 1,954,076 Mortgage-backed securities 61,078,665 12,993 2,066,238 59,025,420 $ 78,267,079 $ 12,993 $ 2,875,936 $ 75,404,136 There were no three June 30, 2018 2017. As of June 30, 2018 March 31, 2018, one May 2016 $53,850 $54,709 June 30, 2018. As of June 30, 2018 March 31, 2018, one $ 744,186 $719,728 $723,023, The amortized cost and estimated fair value of debt securities by contractual maturity at June 30, 2018 March 31, 2018 may may Available for Sale June 30, 2018 March 31, 2018 Amortized Fair Amortized Fair cost value cost value Maturing Within one year $ 2,005,901 $ 1,995,924 $ 2,009,160 $ 1,995,625 Over one to five years 1,230,371 1,190,018 1,231,928 1,196,368 Over five to ten years 3,576,063 3,524,030 3,578,827 3,500,641 Over ten years 10,343,518 9,621,773 10,368,499 9,686,082 Mortgage-backed securities, in monthly installments 58,605,648 56,306,952 61,078,665 59,025,420 $ 75,761,501 $ 72,638,697 $ 78,267,079 $ 75,404,136 The following table presents the Company's investments' gross unrealized losses and the corresponding fair values by investment category and length of time that the securities have been in a continuous unrealized loss position at June 30, 2018 March 31, 2018. Less than 12 months 12 months or longer Total Gross unrealized Fair Gross unrealized Fair Gross unrealized Fair June 30, 2018 losses value losses value losses value U.S. government agencies $ 24,458 $ 719,728 $ 9,977 $ 1,995,924 $ 34,435 $ 2,715,652 Municipal bonds - - 772,923 11,632,843 772,923 11,632,843 Corporate bonds - - 16,750 1,983,250 16,750 1,983,250 Mortgage-backed securities 494,184 18,259,112 1,808,724 37,779,118 2,302,908 56,038,230 $ 518,642 $ 18,978,840 $ 2,608,374 $ 53,391,135 $ 3,127,016 $ 72,369,975 Less than 12 months 12 months or longer Total Gross unrealized Fair Gross unrealized Fair Gross unrealized Fair March 31, 2018 losses value losses value losses value U.S. government agencies $ 21,163 $ 723,023 $ 13,534 $ 1,995,625 $ 34,697 $ 2,718,648 Municipal bonds - - 729,077 11,705,991 729,077 11,705,991 Corporate bonds - - 45,924 1,954,076 45,924 1,954,076 Mortgage-backed securities 383,987 15,880,948 1,682,251 40,684,836 2,066,238 56,565,784 $ 405,150 $ 16,603,971 $ 2,470,786 $ 56,340,528 $ 2,875,936 $ 72,944,499 The unrealized losses that exist are a result of market changes in interest rates since the original purchase. Management systematically evaluates investment securities for other-than-temporary declines in fair value on an annual basis from the date of purchase if the respective security is in a loss position. This analysis requires management to consider various factors, which include ( 1 2 3 An impairment loss is recognized in earnings if any of the following are true: ( 1 2 not 3 not not

Note 5 - Loans Receivable and A

Note 5 - Loans Receivable and Allowance for Loan Losses	3 Months Ended
	Jun. 30, 2018
Notes to Financial Statements
Loans, Notes, Trade and Other Receivables Disclosure [Text Block]	Note 5: Loans Receivable and Allowance for Loan Losses Loans receivable, excluding loans held for sale, consist of the following at June 30, 2018 March 31, 2018: June 30, 2018 March 31, 2018 Legacy (1) Acquired Total Loans % of Total Legacy (1) Acquired Total Loans % of Total Real estate loans: One-to four-family: Residential (2) $ 84,252,950 $ 70,509,208 $ 154,762,158 41 % $ 85,248,184 $ 72,749,066 $ 157,997,250 41 % Residential construction 5,636,504 - 5,636,504 1 % 5,450,827 - 5,450,827 1 % Investor (3) 8,822,670 17,210,983 26,033,653 7 % 9,275,031 17,460,809 26,735,840 7 % Commercial 102,659,016 10,486,192 113,145,208 30 % 100,403,769 11,762,485 112,166,254 29 % Commercial construction 2,550,462 854,370 3,404,832 1 % 5,763,784 1,352,019 7,115,803 2 % Total real estate loans 203,921,602 99,060,753 302,982,355 80 % 206,141,595 103,324,379 309,465,974 80 % Commercial business (4) 37,061,370 1,905,770 38,967,140 10 % 38,302,739 1,841,226 40,143,965 10 % Home equity loans 13,735,464 5,475,308 19,210,772 5 % 13,956,327 6,039,462 19,995,789 5 % Consumer (5) 17,861,626 739,300 18,600,926 5 % 18,849,448 766,063 19,615,511 5 % Total Loans 272,580,062 107,181,131 379,761,193 100 % 277,250,109 111,971,130 389,221,239 100 % Net deferred loan origination fees and costs (204,650 ) - (204,650 ) (212,746 ) - (212,746 ) Loan premium (discount) 1,844,408 (356,912 ) 1,487,496 1,922,428 (510,036 ) 1,412,392 $ 274,219,820 $ 106,824,219 $ 381,044,039 $ 278,959,791 $ 111,461,094 $ 390,420,885 ( 1 As a result of the acquisition of Fraternity Community Bancorp, Inc., the parent company of Fraternity Federal Savings and Loan, in May 2016 September 2015, two ( 2 "Legacy" one four March 31, 2018 $19.2 second 2018. ( 3 "Investor" loans are residential mortgage loans secured by non-owner occupied one four ( 4 "Legacy" commercial business loans at March 31, 2018 $15.5 June 2017 $3.2 second 2018. ( 5 "Legacy" consumer loans at March 31, 2018 $19.9 August December 2017. Residential lending is generally considered to involve less risk than other forms of lending, although payment experience on these loans is dependent on economic and market conditions in the Bank's lending area. Construction loan repayments are generally dependent on the related properties or the financial condition of its borrower or guarantor. Accordingly, repayment of such loans can be more susceptible to adverse conditions in the real estate market and the regional economy. A substantial portion of the Bank's loan portfolio is real estate loans secured by residential and commercial real estate properties located in the Baltimore metropolitan area. Loans are extended only after evaluation of a customer's creditworthiness and other relevant factors on a case-by-case basis. The Bank generally does not 75% 95% 80%. Commercial business loans are made to provide funds for equipment and general corporate needs. Repayment of a loan primarily uses the funds obtained from the operation of the borrower’s business. Commercial loans also include lines of credit that are utilized to finance a borrower’s short-term credit needs and/or to finance a percentage of eligible receivables and inventory. The Company’s loan portfolio also includes equipment leases, which consists of leases for essential commercial equipment used by small to medium sized businesses. The home equity loans consist of both conforming loans and revolving lines of credit to consumers which are secured by residential real estate. These loans are typically secured with second may The following table details activity in the allowance for loan losses by portfolio segment for the three June 30, 2018 2017. not not June 30, 2018 Three Months Ended June 30, 2018 Residential Real Estate Investor Real Estate Commercial Real Estate Commercial Construction Commercial Business Home Equity Consumer Total Allowance for credit losses: Beginning balance $ 608,723 $ 51,690 $ 1,253,383 $ 33,430 $ 673,982 $ 69,459 $ 131,236 $ 2,821,903 Charge-offs (8,047 ) (5,580 ) (31,320 ) - - - (2,465 ) (47,412 ) Recoveries 767 65 - - - - 1,664 2,496 Provision for credit losses (232 ) 17,331 133,823 (18,637 ) (64,610 ) (1,192 ) (6,483 ) 60,000 Ending balance $ 601,211 $ 63,506 $ 1,355,886 $ 14,793 $ 609,372 $ 68,267 $ 123,952 $ 2,836,987 Allowance allocated to: Legacy Loans: Individually evaluated for impairment $ 261,902 $ - $ - $ - $ - $ - $ - $ 261,902 Collectively evaluated for impairment 339,309 63,506 1,355,886 14,793 609,372 68,267 123,952 2,575,085 Acquired Loans: Individually evaluated for impairment $ - $ - $ - $ - $ - $ - $ - $ - Collectively evaluated for impairment - - - - - - - - June 30, 2017 Three Months Ended June 30, 2017 Residential Real Estate Investor Real Estate Commercial Real Estate Commercial Construction Commercial Business Home Equity Consumer Total Allowance for credit losses: Beginning balance $ 553,539 $ 35,275 $ 1,375,894 $ 9,031 $ 149,461 $ 70,071 $ 1,544 $ 2,194,815 Charge-offs - (4,078 ) - - - - - (4,078 ) Recoveries - 5,307 - - 175 - 1,309 6,791 Provision for credit losses (8,982 ) 27,967 (63,736 ) 17,956 193,458 (5,410 ) (1,253 ) 160,000 Ending balance $ 544,557 $ 64,471 $ 1,312,158 $ 26,987 $ 343,094 $ 64,661 $ 1,600 $ 2,357,528 Allowance allocated to: Legacy Loans: Individually evaluated for impairment $ 278,573 $ - $ - $ - $ - $ - $ - $ 278,573 Collectively evaluated for impairment 265,984 64,471 1,312,158 26,987 343,094 64,661 1,600 2,078,955 Acquired Loans: Individually evaluated for impairment $ - $ - $ - $ - $ - $ - $ - $ - Collectively evaluated for impairment - - - - - - - - Our recorded investment in loans at June 30, 2018 2017 June 30, 2018 Residential Real Estate Investor Real Estate Commercial Real Estate Commercial Construction Commercial Business Home Equity Consumer Total Loans: Legacy Loans: Individually evaluated for impairment $ 1,784,758 $ 58,599 $ 7,505,365 $ - $ 858,762 $ 7,408 $ 19,853 $ 10,234,745 Collectively evaluated for impairment 88,104,696 8,764,071 95,153,651 2,550,462 36,202,608 13,728,056 17,841,773 262,345,317 Ending balance $ 89,889,454 $ 8,822,670 $ 102,659,016 $ 2,550,462 $ 37,061,370 $ 13,735,464 $ 17,861,626 $ 272,580,062 Acquired Loans: Individually evaluated for impairment $ 892,087 $ 433,174 $ 197,259 $ - $ - $ - $ 58,706 $ 1,581,226 Collectively evaluated for impairment 69,617,121 16,777,808 10,288,933 854,370 1,905,770 5,475,308 680,595 105,599,905 Ending balance $ 70,509,208 $ 17,210,982 $ 10,486,192 $ 854,370 $ 1,905,770 $ 5,475,308 $ 739,301 $ 107,181,131 June 30, 2017 Residential Real Estate Investor Real Estate Commercial Real Estate Commercial Construction Commercial Business Home Equity Consumer Total Loans: Legacy Loans: Individually evaluated for impairment $ 1,762,599 $ 7,772 $ 1,546,811 $ - $ 723,753 $ 10,980 $ - $ 4,051,915 Collectively evaluated for impairment 73,656,157 7,803,689 91,081,612 2,326,457 34,615,330 14,105,667 2,135,569 225,724,481 Ending balance $ 75,418,756 $ 7,811,461 $ 92,628,423 $ 2,326,457 $ 35,339,083 $ 14,116,647 $ 2,135,569 $ 229,776,396 Acquired Loans: Individually evaluated for impairment $ 1,177,729 $ 183,728 $ 203,215 $ - $ - $ - $ 68,772 $ 1,633,444 Collectively evaluated for impairment 79,118,824 18,249,669 14,196,187 1,191,507 2,037,264 6,668,685 859,928 122,322,064 Ending balance $ 80,296,553 $ 18,433,397 $ 14,399,402 $ 1,191,507 $ 2,037,264 $ 6,668,685 $ 928,700 $ 123,955,508 Past due loans, segregated by age and class of loans, as of June 30, 2018 March 31, 2018, June 30, 2018 March 31, 2018 Legacy Acquired Total Legacy Acquired Total Current $ 263,581,744 $ 105,746,394 $ 369,328,138 $ 270,807,643 $ 109,972,473 $ 380,780,116 Accruing past due loans: 30-59 days past due: Real estate loans: Residential 74,733 82,995 157,728 63,618 689,364 752,982 Investor - - - - - - Commercial - - - - - - Commercial construction - - - - - - Commercial business 14,573 - 14,573 135,502 - 135,502 Home equity loans - - - - - - Consumer 28,161 28,005 56,166 148,876 - 148,876 Total 30-59 days past due 117,467 111,000 228,467 347,996 689,364 1,037,360 60-89 days past due: Real estate loans: Residential 26,172 - 26,172 70,291 - 70,291 Investor - - - - - - Commercial - - - - - - Commercial construction - - - - - - Commercial business - - - 134,524 - 134,524 Home equity loans - - - - - - Consumer - - - 28,300 - 28,300 Total 60-89 days past due 26,172 - 26,172 233,115 - 233,115 90 or more days past due: Real estate loans: Residential - - - - - - Investor 515,243 517,040 1,032,283 734,818 471,423 1,206,241 Commercial - 197,259 197,259 - - - Commercial construction - - - - - - Commercial business - - - - - - Home equity loans - - - - - - Consumer - - - - - - Total 90 or more days past due 515,243 714,299 1,229,542 734,818 471,423 1,206,241 Total accruing past due loans 658,882 825,299 1,484,181 1,315,929 1,160,787 2,476,716 Non-accruing loans: Real estate loans: Residential 515,611 315,038 830,649 526,584 338,060 864,644 Investor 58,599 294,400 352,999 60,949 300,872 361,821 Commercial 7,505,364 - 7,505,364 4,356,264 198,938 4,555,202 Commercial construction - - - - - - Commercial business 240,009 - 240,009 165,285 - 165,285 Home equity loans - - - 12,605 - 12,605 Consumer 19,853 - 19,853 4,850 - 4,850 Non-accruing loans: 8,339,436 609,438 8,948,874 5,126,537 837,870 5,964,407 Total Loans $ 272,580,062 $ 107,181,131 $ 379,761,193 $ 277,250,109 $ 111,971,130 $ 389,221,239 Nonaccrual interest not accrued: Real estate loans: Residential $ 2,248 $ 4,308 $ 6,556 $ 8,250 $ 53,120 $ 61,370 Investor 969 4,138 5,107 8,513 15,604 24,117 Commercial 184,891 - 184,891 294,619 - 294,619 Commercial construction - - - - - - Commercial business 7,462 - 7,462 12,891 - 12,891 Home equity loans - - - 436 - 436 Consumer 446 - 446 385 - 385 Total nonaccrual interest not accrued $ 196,016 $ 8,446 $ 204,462 $ 325,094 $ 68,724 $ 393,818 Impaired Loans as of and for the three June 30, 2018 2017, March 31, 2018, Impaired Loans at June 30, 2018 Three Months Ended June 30, 2018 Unpaid Contractual Average Interest Principal Recorded Related Recorded Income Balance Investment Allowance Investment Recognized Legacy: With no related allowance recorded: Real estate loans: Residential $ 630,805 $ 484,375 $ - $ 490,726 $ 10,492 Investor 124,696 58,599 - 59,355 1,312 Commercial 9,565,282 7,505,365 - 5,957,014 53,278 Commercial construction - - - Commercial business 1,619,151 858,762 - 827,871 8,863 Home equity loans 34,472 7,408 - 17,016 953 Consumer 22,382 19,853 - 19,577 - With an allowance recorded: Real estate loans: Residential 1,327,589 1,300,383 261,902 1,312,130 13,834 Investor - - - - - Commercial - - - - - Commercial construction - - - - - Commercial business - - - - - Home equity loans - - - - - Consumer - - - - - Total legacy impaired 13,324,377 10,234,745 261,902 8,683,689 88,732 Acquired (1): With no related allowance recorded: Real estate loans: Residential 1,052,825 892,087 - 936,819 10,156 Investor 755,381 433,174 - 437,401 9,184 Commercial 247,259 197,259 - 198,098 1,863 Commercial construction - - - - - Commercial business - - - - - Home equity loans 39,418 - - - 419 Consumer 93,577 58,706 - 59,571 2,418 With an allowance recorded: Real estate loans: Residential - - - - - Investor - - - - - Commercial - - - - - Commercial construction - - - - - Commercial business - - - - - Home equity loans - - - - - Consumer - - - - - Total acquired impaired 2,188,460 1,581,226 - 1,631,889 24,040 Total impaired $ 15,512,837 $ 11,815,971 $ 261,902 $ 10,315,578 $ 112,772 ( 1 Generally accepted accounting principles require that we record acquired loans at fair value at acquisition, which includes a discount for loans with credit impairment. These purchased credit impaired loans are not not Impaired Loans at June 30, 2017 Three Months Ended June 30, 2017 Unpaid Contractual Average Interest Principal Recorded Related Recorded Income Balance Investment Allowance Investment Recognized Legacy: With no related allowance recorded: Real estate loans: Residential $ 581,380 $ 449,473 $ - $ 453,305 $ 288 Investor 50,947 7,772 - 7,847 - Commercial 3,433,621 1,546,811 - 1,546,812 - Commercial construction - - - - - Commercial business 1,138,939 723,753 - 740,966 25,151 Home equity loans 36,734 10,980 - 11,510 93 Consumer - - - - - With an allowance recorded: Real estate loans: Residential 1,340,394 1,313,126 278,573 1,317,495 12,802 Investor - - - - - Commercial - - - - - Commercial construction - - - - - Commercial business - - - - - Home equity loans - - - - - Consumer - - - - - Total legacy impaired 6,582,015 4,051,915 278,573 4,077,935 38,334 Acquired (1): With no related allowance recorded: Real estate loans: Residential 1,370,261 1,177,729 - 1,184,445 11,221 Investor 333,362 183,728 - 168,815 3,102 Commercial 253,215 203,215 - 203,870 1,912 Commercial construction - - - - - Commercial business - - - - - Home equity loans 44,852 - - - 288 Consumer 107,670 68,772 - 70,988 1,927 With an allowance recorded: Real estate loans: Residential - - - - - Investor - - - - - Commercial - - - - - Commercial construction - - - - - Commercial business - - - - - Home equity loans - - - - - Consumer - - - - - Total acquired impaired 2,109,360 1,633,444 - 1,628,118 18,450 Total impaired $ 8,691,375 $ 5,685,359 $ 278,573 $ 5,706,053 $ 56,784 ( 1 Generally accepted accounting principles require that we record acquired loans at fair value at acquisition, which includes a discount for loans with credit impairment. These purchased credit impaired loans are not not Impaired Loans at March 31, 2018 For the Year Ended March 31, 2018 Unpaid Contractual Average Interest Principal Recorded Related Recorded Income Balance Investment Allowance Investment Recognized Legacy: With no related allowance recorded: Real estate loans: Residential $ 665,051 $ 517,600 $ - $ 548,636 $ 9,257 Investor 126,389 60,949 - 118,175 3,772 Commercial 6,487,088 4,356,264 - 4,634,504 1,077 Commercial construction - - - - - Commercial business 1,562,756 795,410 - 1,082,773 103,474 Home equity loans 47,650 20,595 - 22,604 392 Consumer 48,115 34,266 - 38,514 1,576 With an allowance recorded: Real estate loans: Residential 1,336,078 1,309,440 266,256 1,328,919 51,928 Investor - - - - Commercial - - - - - Commercial construction - - - - - Commercial business - - - - - Home equity loans - - - - - Consumer - - - - - Total legacy impaired 10,273,127 7,094,524 266,256 7,774,125 171,476 Acquired (1): With no related allowance recorded: Real estate loans: Residential 1,082,484 922,252 - 945,602 26,437 Investor 682,045 444,254 - 659,246 37,368 Commercial 248,938 198,938 - 201,519 7,336 Commercial construction - - - - - Commercial business - - - - - Home equity loans 40,473 - - - 1,329 Consumer 95,986 60,371 - 64,013 6,062 With an allowance recorded: Real estate loans: Residential - - - - - Investor - - - - - Commercial - - - - - Commercial construction - - - - - Commercial business - - - - - Home equity loans - - - - - Consumer - - - - - Total acquired impaired 2,149,926 1,625,815 - 1,870,380 78,532 Total impaired $ 12,423,053 $ 8,720,339 $ 266,256 $ 9,644,505 $ 250,008 ( 1 Generally accepted accounting principles require that we record acquired loans at fair value at acquisition, which includes a discount for loans with credit impairment. These purchased credit impaired loans are not not The following table documents changes in the carrying amount of acquired impaired loans (Purchased Credit Impaired or “PCI”) for the three June 30, 2018 2017, June 30, 2018 June 30, 2017 Recorded investment at beginning of period $ 1,021,424 $ 1,341,935 Accretion 1,526 (360 ) Reductions for payments (21,493 ) (46,664 ) Recorded investment at end of period $ 1,001,457 $ 1,294,911 Oustanding principal balance at end of period $ 1,247,145 $ 1,630,658 A summary of changes in the accretable yield for PCI loans for the three June 30, 2018 2017 June 30, 2018 June 30, 2017 Accretable yield, beginning of period $ 31,895 $ 59,639 Accretion (1,526 ) 360 Reclassification from nonaccretable difference - - Accretable yield, end of period $ 30,369 $ 59,999 Impaired loans also include certain loans that have been modified in troubled debt restructurings (TDRs) where economic concessions have been granted to borrowers who have experienced or are expected to experience financial difficulties. These concessions typically result from the Bank's loss mitigation activities and could include reductions in the interest rate, payment extensions, forgiveness of principal, forbearance or other actions. Generally, nonaccrual loans that are modified and considered TDRs are classified as nonperforming at the time of restructure and may six A summary of TDRs at June 30, 2018 March 31, 2018 Number of June 30, 2018 contracts Performing Nonperforming Total Real estate loans: Residential 16 $ 1,242,975 $ 306,235 $ 1,549,210 Investor - - - - Commercial 2 - 1,195,421 1,195,421 Commercial construction - - - - Commercial business 1 604,181 - 604,181 Home equity loans - - - - Consumer - - - - 19 $ 1,847,156 $ 1,501,656 $ 3,348,812 Number of March 31, 2018 contracts Performing Nonperforming Total Real estate loans: Residential 15 $ 1,230,166 $ 312,964 $ 1,543,130 Investor - - - - Commercial 2 - 1,195,421 1,195,421 Commercial construction - - - - Commercial business 1 605,488 - 605,488 Home equity loans - - - - Consumer - - - - 18 $ 1,835,654 $ 1,508,385 $ 3,344,039 The following table presents the number of contracts and the dollar amount of TDRs that were added during the three June 30, 2018 2017. no June 30, 2018. Loans Modified as a TDR for the Three Months Ended June 30, 2018 June 30, 2017 Troubled Debt Restructurings Number of contracts Outstanding recorded investment Number of contracts Outstanding recorded investment Real estate loans: Residential 1 $ 20,866 1 $ 1,931 There were no three June 30, 2018 2017. 90 In calculating the allowance for loan losses, individual TDRs are evaluated for impairment. TDRs are evaluated for impairment based upon either the present value of cash flows or, if collateral dependent, the lower of cost or fair value of the underlying collateral. If it is determined that the cash flows or underlying collateral is less than the carrying amount of the loan, the difference in value will be charged-off through earnings, unless the TDR is performing, in which case a specific reserve may Credit quality indicators As part of the ongoing monitoring of the credit quality of the Bank's loan portfolio, management tracks certain credit quality indicators including trends related to the risk grade of loans, the level of classified loans, net charge offs, nonperforming loans, and the general economic conditions in the Bank's market. The Bank utilizes a risk grading matrix to assign a risk grade to each of its loans. A description of the general characteristics of loans characterized as watch list or classified is as follows: Pass A pass loan is considered of sufficient quality to preclude a special mention or an adverse rating. Pass assets generally are well protected by the current net worth and paying capacity of the obligor or by the value of the asset or underlying collateral. Special Mention A special mention loan has potential weaknesses that deserve management's close attention. If left uncorrected, these potential weaknesses may not not Loans that would primarily fall into this notational category could have been previously classified adversely, but the deficiencies have since been corrected. Management should closely monitor recent payment history of the loan and value of the collateral. Borrowers may may may Substandard A substandard loan is inadequately protected by the current sound worth and paying capacity of the obligor or of the collateral pledged, if any. Substandard loans have a well-defined weakness, or weaknesses, that jeopardize the collection or liquidation of the debt. They are characterized by the distinct possibility that the Bank will sustain some loss if the deficiencies are not Borrowers may Doubtful A doubtful loan has all the weaknesses inherent as a substandard loan 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. A loan classified as doubtful exhibits loss potential. However, there is still sufficient reason to permit the loan to remain on the books. A doubtful classification could reflect the deterioration of the primary source of repayment and serious doubt exists as to the quality of the secondary source of repayment. Doubtful classifications should be used only when a distinct and known possibility of loss exists. When identified, adequate loss should be recorded for the specific assets. The entire asset should not Loss Loans classified as loss are considered uncollectable and of such little value that their continuance as loans is unjustified. A loss classification does not no may The following tables present the June 30, 2018 March 31, 2018, no June 30, 2018 March 31, 2018. June 30, 2018 March 31, 2018 LEGACY ACQUIRED TOTAL LEGACY ACQUIRED TOTAL Risk Rating: Rating - Pass: Real estate loans: Residential $ 87,092,026 $ 68,580,711 $ 155,672,737 $ 87,863,805 $ 70,901,293 $ 158,765,098 Investor 8,764,071 16,487,657 25,251,728 9,214,082 16,719,346 25,933,428 Commercial 95,153,651 10,288,933 105,442,584 92,955,370 11,563,547 104,518,917 Commercial construction 2,550,462 854,370 3,404,832 5,763,784 1,352,019 7,115,803 Commercial Business 36,806,789 1,905,770 38,712,559 37,978,293 1,841,226 39,819,519 Home Equity 13,728,056 5,367,653 19,095,709 13,935,732 5,928,787 19,864,519 Consumer 17,841,773 707,772 18,549,545 18,733,489 733,669 19,467,158 Total Pass 261,936,828 104,192,866 366,129,694 266,444,555 109,039,887 375,484,442 Rating - Special Mention: Real estate loans: Residential 2,370,659 1,036,410 3,407,069 2,365,652 925,521 3,291,173 Investor - 291,458 291,458 - 297,209 297,209 Commercial - - - 3,092,135 - 3,092,135 Commercial construction - - - - - - Commercial Business - - - 134,524 - 134,524 Home Equity - 107,655 107,655 - 110,675 110,675 Consumer - - - 96,474 - 96,474 Total Special Mention 2,370,659 1,435,523 3,806,182 5,688,785 1,333,405 7,022,190 Rating - Substandard: Real estate loans: Residential 426,769 892,087 1,318,856 469,554 922,252 1,391,806 Investor 58,599 431,868 490,467 60,949 444,254 505,203 Commercial 7,505,365 197,259 7,702,624 4,356,264 198,938 4,555,202 Commercial construction - - - - - - Commercial Business 254,581 - 254,581 189,922 - 189,922 Home Equity 7,408 - 7,408 20,595 - 20,595 Consumer 19,853 31,528 51,381 19,485 32,394 51,879 Total - Substandard 8,272,575 1,552,742 9,825,317 5,116,769 1,597,838 6,714,607 Rating - Doubtful - - - - - - Rating - Loss - - - - - - TOTAL LOANS $ 272,580,062 $ 107,181,131 $ 379,761,193 $ 277,250,109 $ 111,971,130 $ 389,221,239 In the normal course of business, the Bank has various outstanding commitments and contingent liabilities that are not no may not The Bank’s maximum exposure to credit loss in the event of nonperformance by the customer is the contractual amount of the credit commitment. Loan commitments, lines of credit, and letters of credit are made on the same terms, including collateral, as outstanding loans. The Bank has established an off-balance sheet reserve for potential losses associated with any outstanding commitment or unused line of credit. The off-balance sheet reserve is a percentage of the outstanding commitment or unused line of credit that is based upon a discounted charge-off history associated with each respective loan segment. The reserve at June 30, 2018 March 31, 2018 $52,000 $50,000, June 30, 2018, not The Bank had the following outstanding commitments and unused lines of credit as of June 30, 2018 March 31, 2018: Outstanding Commitment and June 30, March 31, Used Lines of Credit 2018 2018 Unused commercial lines of credit $ 11,325,807 $ 9,187,810 Unused home equity lines of credit 24,296,445 22,560,376 Unused consumer lines of credit 185,417 29,331 Residential construction loan commitments 5,600,272 4,234,076 Commercial construction loan commitments 8,147,129 8,968,416 Home equity loan commitments 696,000 389,600 Commercial loan commitments 4,490,151 5,125,000 Standby letter of credit 415,607 250,224

Note 6 - Goodwill and Other Int

Note 6 - Goodwill and Other Intangible Asset	3 Months Ended
	Jun. 30, 2018
Notes to Financial Statements
Goodwill and Intangible Assets Disclosure [Text Block]	Note 6: Goodwill and Other Intangible Asset The Company’s intangible assets (goodwill and core deposit intangible) at June 30, 2018 December 2009 September 2015 May 2016, $2.7 December 31, 2017. fourth 2018, March 31, 2018. December 31, 2017 March 31, 2018, no March 31, 2018. eight The following table presents the changes in the net book value of intangible assets for the three June 30, 2018 2017: Core deposit Goodwill intangible Balance April 1, 2017 $ 8,563,530 $ 739,298 Amortization - (31,516 ) Balance June 30, 2017 8,563,530 707,782 Core deposit Goodwill intangible Balance April 1, 2018 $ 8,563,530 $ 613,234 Amortization - (31,516 ) Balance June 30, 2018 $ 8,563,530 $ 581,718 At June 30, 2018, Year ending March 31, Amount 2019 94,554 2020 123,737 2021 98,070 2022 98,070 2023 98,070 2024 64,174 2025 5,043 $ 581,718

Note 7 - Derivative - Interest

Note 7 - Derivative - Interest Rate Swap Agreement	3 Months Ended
	Jun. 30, 2018
Notes to Financial Statements
Derivative Instruments and Hedging Activities Disclosure [Text Block]	Note 7: Derivative – Interest Rate Swap Agreement The Company utilizes interest rate swap agreements as part of its asset liability management strategy to help manage its interest rate risk position. The notional amount of the interest rate swaps does not $754,000 $751,000 June 30, 2018 March 31, 2018, Interest Rate SWAPS Designated as Cash Flow Hedges During fiscal 2017, $11.6 June 30, 2018 September 30, 2017. $381 three June 30, 2018. Summary information about the interest rate swaps designated as cash flow hedges is as follows: Notional Effective Pay Fixed Receive Interest Rate Swap Amount Start Date Maturity Date Rate Floating Rate FHLB Advance Swap 1 $ 1,850,000 March 9, 2017 March 9, 2022 2.24 % 3-Month LIBOR FHLB Advance Swap 2 1,850,000 March 9, 2017 March 9, 2024 2.41 % 3-Month LIBOR FHLB Advance Swap 3 1,850,000 March 9, 2017 March 9, 2027 2.57 % 3-Month LIBOR FHLB Advance Swap 4 2,000,000 March 29, 2017 March 29, 2022 2.08 % 3-Month LIBOR FHLB Advance Swap 5 2,000,000 March 29, 2017 March 29, 2024 2.24 % 3-Month LIBOR FHLB Advance Swap 6 2,000,000 March 29, 2017 March 29, 2027 2.40 % 3-Month LIBOR Total Notional Amount $ 11,550,000 Interest expense recorded on the swap transactions totaled $2,738 three June 30, 2018 The following table reflects cash flow hedges included in the Consolidated Statements of Financial Condition as of June 30, 2018 March 31, 2018: 6/30/2018 3/31/2018 Notional Notional Amount Fair Value Amount Fair Value Included in assets: Interest rate swaps related to FHLB Advances $ 11,550,000 $ 315,884 $ 11,550,000 $ 217,464 The following tables present the net gain (loss) recorded in accumulated other comprehensive income (loss) and the Consolidated Statements of Operations relating to the cash flow derivative instruments for the three June 30, 2018 2017: Three Month and Period Ended June 30, 2018 Amount of Gain Amount of Gain Amount of Gain (Loss) Recognized (Loss) Reclassified (Loss) Recognized in in OCI from OCI to Other Noninterest Income (Effective Portion) Interest Income (Ineffective Portion) Interest Rate Contracts $ 98,039 $ - $ (381 ) Three Month and Period Ended June 30, 2017 Amount of Gain Amount of Gain Amount of Gain (Loss) Recognized (Loss) Reclassified (Loss) Recognized in in OCI from OCI to Other Noninterest Income (Effective Portion) Interest Income (Ineffective Portion) Interest Rate Contracts $ (126,314 ) $ - $ - Interest Rate SWAPS Designated as Fair Value Hedges The derivative position relates to a transaction in which the Bank entered into an interest rate swap with another financial institution using a fixed rate commercial real estate loan as an offset. The Bank agrees to pay the other financial institution a fixed interest rate on a notional amount based upon the commercial real estate loan and in return receive a variable interest rate on the same notional amount. This transaction allows the Bank to effectively convert a fixed rate loan to a variable rate. Because the terms of the swap with the other financial institution and the commercial real estate loan offset each other, with the only difference being credit risk associated with the loan, changes in the fair value of the underlying derivative contract and the commercial real estate loan are not not During the second 2016, $3.3 3.99% 10 $3.1 June 30, 2018. Credit risk arises from the possible inability of counterparties to meet the terms of their contracts. The Bank’s exposure is limited to the replacement value of the contract rather than the notional amount, principal, or contract amount. There are provisions in the agreement with the counterparty that allow for certain unsecured credit exposure up to an agreed threshold. Exposures in excess of the agreed threshold are collateralized. In addition, the Bank minimizes credit risk through credit approvals, limits, and monitoring procedures. The fair value hedge is summarized below: June 30, 2018 March 31, 2018 Notional Amount Principal Amount Fair Value Notional Amount Principal Amount Fair Value Included in Loans and Leases: Commercial real estate loan $ - $ 3,070,825 $ 2,973,514 $ - $ 3,091,892 $ 3,022,744 Included in Other Assets: Interest Rate Swap $ 3,070,825 $ - $ 97,311 $ 3,091,892 - $ 69,148 No three June 30, 2018 2017

Note 8 - Deposits

Note 8 - Deposits	3 Months Ended
	Jun. 30, 2018
Notes to Financial Statements
Deposit Liabilities Disclosures [Text Block]	Note 8: The following table details the composition of deposits and the related percentage mix of total deposits, respectively: June 30, 2018 March 31, 2018 Amount % of Total Amount % of Total Savings $ 40,965,710 10.1 % $ 42,499,381 10.6 % Noninterest-bearing checking 27,485,033 6.8 % 29,557,943 7.3 % Interest-bearing checking 29,482,021 7.3 % 27,219,286 6.7 % Money market accounts 66,235,735 16.4 % 58,466,228 14.4 % Time deposits 239,974,615 59.4 % 246,988,613 61.0 % $ 404,143,114 100.0 % $ 404,731,451 100.0 % Premium on deposits asssumed 330,947 411,524 Total deposits $ 404,474,061 $ 405,142,975

Note 9 - Lines of Credit and Fe

Note 9 - Lines of Credit and Federal Home Loan Bank Advances	3 Months Ended
	Jun. 30, 2018
Notes to Financial Statements
Federal Home Loan Bank Advances, Disclosure [Text Block]	Note 9: Lines of Credit and Federal Home Loan Bank Advances The Bank may $5.0 $1.0 no June 30, 2018 March 31, 2018. Borrowings consist of advances from the Federal Home Loan Bank (FHLB). The Bank may 25 June 30, 2018 March 31, 2018, $72.0 $68.3 $116.7 June 30, 2018 $122.6 March 31, 2018. June 30, 2018 March 31, 2018 June 30, 2018 March 31, 2018 Amount Rate Maturity Date Amount Rate Maturity Date FHLB advance (1) $ 5,550,000 2.08 % 9/10/2018 $ 5,550,000 1.84 % 6/11/2018 FHLB advance (2) 6,000,000 2.07 % 10/1/2018 6,000,000 1.90 % 6/29/2018 FHLB advance 1,000,000 2.60 % 7/2/2018 1,000,000 2.60 % 7/2/2018 FHLB advance 1,000,000 3.05 % 7/3/2018 1,000,000 3.05 % 7/3/2018 FHLB advance 5,000,000 3.94 % 7/23/2018 5,000,000 3.94 % 7/23/2018 FHLB advance 1,000,000 1.74 % 7/31/2018 1,000,000 1.74 % 7/31/2018 FHLB advance 1,000,000 1.40 % 8/21/2018 1,000,000 1.40 % 8/21/2018 FHLB advance 4,000,000 1.94 % 8/27/2018 4,000,000 1.94 % 8/27/2018 FHLB advance 3,000,000 1.41 % 8/27/2018 3,000,000 1.41 % 8/27/2018 FHLB advance 5,000,000 3.38 % 9/19/2018 5,000,000 3.38 % 9/19/2018 FHLB advance - - - 1,000,000 2.60 % 10/2/2018 FHLB advance 1,000,000 1.95 % 12/31/2018 1,000,000 1.95 % 12/31/2018 FHLB advance 3,000,000 1.38 % 7/31/2019 3,000,000 1.38 % 7/31/2019 FHLB advance 3,000,000 1.96 % 8/26/2019 3,000,000 1.96 % 8/26/2019 FHLB advance 3,000,000 1.59 % 8/26/2019 3,000,000 1.59 % 8/26/2019 FHLB advance 3,000,000 1.42 % 8/26/2019 3,000,000 1.42 % 8/26/2019 FHLB advance 1,500,000 1.95 % 11/25/2019 1,500,000 1.95 % 11/25/2019 FHLB advance 1,500,000 1.78 % 11/27/2019 1,500,000 1.78 % 11/27/2019 FHLB advance 3,000,000 2.31 % 2/3/2020 3,000,000 2.31 % 2/3/2020 FHLB advance 1,000,000 2.15 % 11/30/2020 1,000,000 2.15 % 11/30/2020 FHLB advance 2,000,000 2.28 % 12/28/2020 2,000,000 2.28 % 12/28/2020 FHLB advance 2,000,000 2.49 % 2/1/2021 2,000,000 2.49 % 2/1/2021 FHLB advance 3,000,000 1.48 % 8/25/2021 3,000,000 1.48 % 8/25/2021 59,550,000 60,550,000 Premium on FHLB advances assumed 49,093 122,140 Total borrowings $ 59,599,093 $ 60,672,140 ( 1 FHLB Advance is tied to three $1.85 three seven ten 3 three ( 2 FHLB Advance is tied to three $2.0 three seven ten 3 three

Note 10 - Regulatory Capital Ra

Note 10 - Regulatory Capital Ratios	3 Months Ended
	Jun. 30, 2018
Notes to Financial Statements
Regulatory Capital Requirements under Banking Regulations [Text Block]	Note 10: Regulatory Capital Ratios Banks and bank holding companies are subject to various regulatory capital requirements administered by state and federal banking agencies. Capital adequacy guidelines and, additionally for banks, prompt corrective action regulations, involve quantitative measures 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 about components, risk weighting and other factors. The Basel III Capital Rules became effective for Hamilton Bank on January 1, 2015 ( 1 1 1 In connection with the adoption of the Basel III Capital Rules, we elected to opt-out of the requirement to include accumulated other comprehensive income in Common Equity Tier 1. 1 Under the revised prompt corrective action requirements, as of January 1, 2015, 1 1 6.5%; 2 1 8%; 3 10% 4 1 5%. June 30, 2018, The implementation of the capital conservation buffer began on January 1, 2016 0.625% four January 1, 2.5% January 1, 2019). not The aforementioned capital conservation buffer is designed to absorb losses during periods of economic stress. Banking institutions with a ratio of Common Equity Tier 1 As a result of the recently enacted Economic Growth, Regulatory Relief, and Consumer Protection Act (the “Act”), banking regulatory agencies must adopt a revised definition of “well capitalized” for financial institutions and holding companies with assets of less than $10 not may 8% 10%, In addition, as a result of the Act, the Federal Reserve Board is required to amend its small bank holding company and savings and loan holding company policy statement to provide that holding companies with consolidated assets of less than $3 not not not no no November 2018. The following table presents actual and required capital ratios as of June 30, 2018 March 31, 2018 January 1, 2015 January 1, 2019 Actual Minimum Capital Required - Basel III Phase-In Schedule Minimum Capital Required - Basel III Fully Phased-In To be well capitalized (1) Amount Ratio Amount Ratio Amount Ratio Amount Ratio (dollars in thousands) June 30, 2018 Common equity tier 1 capital (to risk-weighted assets) Hamilton Bank $ 40,150 11.04 % $ 23,193 6.375 % $ 25,466 7.00 % $ 23,647 6.50 % Hamilton Bancorp 48,320 13.24 % 23,582 6.375 % 25,894 7.00 % 24,044 6.50 % Total risk-based capital (to risk-weighted assets) Hamilton Bank 43,038 11.83 % 35,926 9.875 % 38,200 10.50 % 36,380 10.00 % Hamilton Bancorp 51,208 14.03 % 36,529 9.875 % 38,841 10.50 % 36,992 10.00 % Tier 1 capital (to risk-weighted assets) Hamilton Bank 40,150 11.04 % 28,650 7.875 % 30,923 8.50 % 29,104 8.00 % Hamilton Bancorp 48,320 13.24 % 29,131 7.875 % 31,443 8.50 % 29,593 8.00 % Tier 1 capital (to adjusted total assets) Hamilton Bank 40,150 7.82 % 20,528 4.000 % 20,528 4.00 % 25,660 5.00 % Hamilton Bancorp 48,320 9.34 % 20,674 4.000 % 20,674 4.00 % 25,843 5.00 % March 31, 2018 Common equity tier 1 capital (to risk-weighted assets) Hamilton Bank $ 39,126 10.61 % $ 23,498 6.375 % $ 25,802 7.00 % $ 23,959 6.50 % Hamilton Bancorp 47,308 12.79 % 23,582 6.375 % 25,894 7.00 % 24,044 6.50 % Total risk-based capital (to risk-weighted assets) Hamilton Bank 41,998 11.39 % 36,399 9.875 % 38,703 10.50 % 36,860 10.00 % Hamilton Bancorp 50,180 13.57 % 36,529 9.875 % 38,841 10.50 % 36,992 10.00 % Tier 1 capital (to risk-weighted assets) Hamilton Bank 39,126 10.61 % 29,027 7.875 % 31,331 8.50 % 29,488 8.00 % Hamilton Bancorp 47,308 12.79 % 29,131 7.875 % 31,443 8.50 % 29,593 8.00 % Tier 1 capital (to adjusted total assets) Hamilton Bank 39,126 7.64 % 20,497 4.000 % 20,497 4.00 % 25,621 5.00 % Hamilton Bancorp 47,308 9.15 % 20,674 4.000 % 20,674 4.00 % 25,843 5.00 % ( 1 Tier 1 In its regulatory report filed as of June 30, 2018, not may no

Note 11 - Stock Based Compensat

Note 11 - Stock Based Compensation	3 Months Ended
	Jun. 30, 2018
Notes to Financial Statements
Disclosure of Compensation Related Costs, Share-based Payments [Text Block]	Note 11: Stock Based Compensation In November 2013, “2013 2013 148,120 370,300 June 30, 2018, 92,701 268,204 2013 Stock Options: Under the above plan, the exercise price for stock options is the market price at date of grant. The maximum option term is ten five 20% first first $61,514 $57,392 three June 30, 2018 2017, The fair value of each option award is estimated on the date of grant using a closed form option valuation (Black-Scholes) model that uses the assumptions noted in the table below. Expected volatilities are based on historical data. The Company uses historical data to estimate option exercise and post-vesting termination behavior. The expected term of options granted represents the period of time that options granted are expected to be outstanding, which takes into account that the options are not The fair value of options granted to date was determined using the following weighted-average assumptions as of grant date. Grant Date Number of Options Granted Risk Free Interest Rate Expected Term (in years) Expected Stock Price Volatility Dividend Yield Fair Value of Options Granted February 3, 2014 225,150 2.07 % 7.0 27.30 % 0.00 % $ 4.65 November 1, 2016 19,000 1.61 % 7.0 27.17 % 0.00 % $ 4.35 February 3, 2017 3,700 2.27 % 7.0 27.26 % 0.00 % $ 5.18 April 1, 2018 20,354 2.67 % 7.0 19.61 % 0.00 % $ 4.05 The following tables summarize the Company’s stock option activity and related information for the periods ended: June 30, 2018: Shares Weighted Average Exercise Price Weighted Average Remaining Contractual Term (in years) Outstanding at April 1, 2018 242,350 $ 13.84 6.1 Granted 20,354 14.25 9.8 Exercised - - - Forfeited, exchanged or expired - - - Outstanding at June 30, 2018 262,704 $ 13.87 6.1 Vested at June 30, 2018 180,260 $ 13.85 5.7 March 31, 2018: Shares Weighted Average Exercise Price Weighted Average Remaining Contractual Term (in years) Outstanding at April 1, 2017 242,350 $ 13.84 7.1 Granted - - - Exercised - - - Forfeited, exchanged or expired - - - Outstanding at March 31, 2018 242,350 $ 13.84 6.1 Vested at March 31, 2018 180,260 $ 13.84 5.8 As of June 30, 2018, $269,191 2.2 $15.70 June 30, 2018, $450,003. Restricted Stock: The specific terms of each restricted stock award are determined by the Compensation Committee at the date of the grant. Compensation expense is recognized over the vesting period of the awards based on the fair value of the stock at the grant date. Restricted stock awards granted shall vest in five 20% first first The following table presents a summary of the activity in the Company’s restricted stock for the periods ended: Weighted-Average June 30, 2018: Shares Fair Value Nonvested shares at April 1, 2018 19,440 $ 13.74 Granted 8,801 14.25 Vested - - Forfeited - - Nonvested shares at June 30, 2018 28,241 $ 13.90 Fair Value of shares vested at June 30, 2018 $ 1,012,022 Weighted-Average March 31, 2018: Shares Fair Value Nonvested shares at April 1, 2017 36,220 $ 13.76 Granted - - Vested (16,780 ) 13.78 Forfeited - - Nonvested shares at March 31, 2018 19,440 $ 13.74 Fair Value of shares vested at March 31, 2018 $ 918,555 The Company recorded restricted stock awards expense of $64,089 $57,819 three June 30, 2018 2017, June 30, 2018, $286,770 2013 2.1

Note 12 - Fair Value Measuremen

Note 12 - Fair Value Measurements	3 Months Ended
	Jun. 30, 2018
Notes to Financial Statements
Fair Value Measurement and Measurement Inputs, Recurring and Nonrecurring [Text Block]	Note 12: Fair Value Measurements Generally accepted accounting principles define fair value, establish a framework for measuring fair value, and establish a hierarchy for determining fair value measurement. three three Level 1 Level 2 not Level 3 one The following is a description of the valuation methods used for instruments measured at fair value as well as the general classification of such instruments pursuant to the applicable valuation method. Fair value measurements on a recurring basis Securities available for sale – If quoted prices are available in an active market for identical assets, securities are classified within Level 1 not June 30, 2018 March 31, 2018, Level 1 Level 2 Level 3 June 30, 2018 inputs inputs inputs Total U.S. government agencies $ - $ 2,715,652 $ - $ 2,715,652 Municipal bonds - 11,632,843 - 11,632,843 Corporate bonds - 1,983,250 1,983,250 Mortgage-backed securities - 56,306,952 - 56,306,952 Total investment securities available for sale $ - $ 70,655,447 $ 1,983,250 $ 72,638,697 Level 1 Level 2 Level 3 March 31, 2018 inputs inputs inputs Total U.S. government agencies $ - $ 2,718,649 $ - $ 2,718,649 Municipal bonds - 11,705,991 - 11,705,991 Corporate bonds - 1,954,076 1,954,076 Mortgage-backed securities - 59,025,404 16 59,025,420 Total investment securities available for sale $ - $ 73,450,044 $ 1,954,092 $ 75,404,136 Derivative – Interest rate swap agreements – The fair values of derivatives are based on valuation models using observable market data as of the measurement date (Level 2 third June 30, 2018, March 31, 2018, Level 1 Level 2 Level 3 June 30, 2018 inputs inputs inputs Total Loans - Commercial real estate loan $ - $ 2,973,514 $ - $ 2,973,514 Derivative - Interest rate swap designated as fair value hedge - 97,311 - 97,311 Derivatives - Interest rate swaps designated as cash flow hedge - 315,884 - 315,884 Level 1 Level 2 Level 3 March 31, 2018 inputs inputs inputs Total Loans - Commercial real estate loan $ - $ 3,022,744 $ - $ 3,022,744 Derivative - Interest rate swap designated as fair value hedge - 69,148 - 69,148 Derivatives - Interest rate swaps designated as cash flow hedge - 217,464 - 217,464 The following table presents the valuation and unobservable inputs for Level 3 June 30, 2018: Valuation Unobservable Range of Description Fair Value Methodology Inputs Inputs Investment securities $ 1,983,250 3rd party valuation Discount to reflect current market conditions 0.00% - 10.00% The following table presents a reconciliation of the investments which are measured at fair value on a recurring basis using significant unobservable inputs (Level 3 Three Months Fiscal Year Ended Ended June 30, 2018 March 31, 2018 Balance, beginning of year $ 1,954,092 $ 1,930,786 Transfers in: Corporate bonds - 1,954,076 Mortgage-backed securities - 16 Municipal bonds - - Transfers out: Corporate bonds - - Mortgage-backed securities 16 2,473 Municipal bonds - 1,928,313 Change in valuation 29,174 - Balance, end of year $ 1,983,250 $ 1,954,092 Fair value measurements on a nonrecurring basis Impaired Loans - The Bank has measured impairment generally based on the fair value of the loan's collateral. Fair value is generally determined based upon independent appraisals of the properties, or discounted cash flows based upon the expected proceeds. These assets are included as Level 3 June 30, 2018 March 31, 2018, $11,815,971 $8,720,339 $261,902 $266,256, Foreclosed real estate – The Bank's foreclosed real estate is measured at the lower of carrying value or fair value less estimated cost to sell. At June 30, 2018 March 31, 2018, $457,778 3. Level 1 Level 2 Level 3 inputs inputs inputs Total June 30, 2018 Impaired loans $ - $ - $ 11,554,069 $ 11,554,069 Foreclosed real estate - - 457,778 457,778 Level 1 Level 2 Level 3 inputs inputs inputs Total March 31, 2018 Impaired loans $ - $ - $ 8,454,083 $ 8,454,083 Foreclosed real estate - - 457,778 457,778 The following table presents the valuation and unobservable inputs for Level 3 June 30, 2018: Valuation Unobservable Range of Description Fair Value Methodology Inputs Inputs Impaired loans, net of allowance $ 11,554,069 Appraised value Discount to reflect current market conditions 0.00% - 25.00% Discounted cash flows Discount rates 2.63% - 7.25% Foreclosed real estate $ 457,778 Appraised value Discount to reflect current market conditions 0.00% - 25.00% The following table summarizes changes in foreclosed real estate for the periods shown, which is measured on a nonrecurring basis using significant unobservable, level 3, Three Months Fiscal Year Ended Ended June 30, 2018 March 31, 2018 Balance at beginning of period $ 457,778 $ 503,094 Transfer to foreclosed real estate - 23,834 Write-down of foreclosed real estate - (31,955 ) Proceeds from sale of foreclosed real estate - (35,896 ) Loss on sale of foreclosed real estate - (1,299 ) Balance at end of period $ 457,778 $ 457,778 The remaining financial assets and liabilities are not may not June 30, 2018 March 31, 2018 Carrying Fair Carrying Fair amount value amount value Financial assets Level 1 inputs Cash and cash equivalents $ 36,059,385 $ 36,059,385 $ 23,368,415 $ 23,368,415 Level 2 inputs Federal Home Loan Bank stock 2,994,900 2,994,900 3,122,400 3,122,400 Bank-owned life insurance 17,569,375 17,569,375 17,455,850 17,455,850 Level 3 inputs Certificates of deposit held as investment 499,167 484,380 499,189 492,751 Loans receivable, net of unearned income 377,973,214 367,539,525 387,328,993 385,818,260 Financial liabilities Level 2 inputs Deposits 404,474,061 404,848,830 405,142,975 405,026,957 Advance payments by borrowers for taxes and insurance 2,707,378 2,707,378 1,962,665 1,962,665 Borrowings 59,599,093 58,581,779 60,672,140 60,494,922 The fair values of cash and cash equivalents and advances by borrowers for taxes and insurance are estimated to equal the carrying amount. The fair values of Federal Home Loan Bank stock and bank-owned life insurance are estimated to equal carrying amounts, which are based on repurchase prices of the FHLB stock and the insurance company. Beginning in the first 2018, 2016 01, first June 30, 2018. 3 March 31, 2018 June 30, 2018 March 31, 2018 not The fair value of certificates of deposit held as investments is estimated based on interest rates currently offered for certificates of deposit with similar remaining maturities. The fair value of interest-bearing checking, savings, and money market deposit accounts is equal to the carrying amount due to these products having no The fair value of borrowings is estimated based on interest rates currently offered for borrowings of similar remaining maturities. The fair value of outstanding loan commitments and unused lines of credit are considered to be the same as the contractual amount, and are not

Significant Accounting Policies

Significant Accounting Policies (Policies)	3 Months Ended
	Jun. 30, 2018
Accounting Policies [Abstract]
Consolidation, Policy [Policy Text Block]	Principles of Consolidation
Use of Estimates, Policy [Policy Text Block]	Use of Estimates.
Marketable Securities, Policy [Policy Text Block]	Investment Securities. may June 30, 2018 March 31, 2018 Investment securities designated as available for sale are stated at estimated fair value based on quoted market prices. They represent those securities which management may may In estimating other-than-temporary impairment losses, management considers the length of time and the extent to which the fair value has been less than cost, the financial condition and near-term prospects of the issuer, and the intent and ability of the Bank to retain its investment in the issuer for a period of time sufficient to allow for any anticipated recovery in fair value.
Finance, Loan and Lease Receivables, Held-for-sale, Policy [Policy Text Block]	Loans Held For Sale .
Finance, Loans and Leases Receivable, Policy [Policy Text Block]	Loans Receivable. Loans are reported at their outstanding unpaid principal balance adjusted for the allowance for loan loss, premiums on loans acquired, and/or any deferred fees or costs on originated loans. Interest revenue is accrued on the unpaid principal balance. Loan origination fees and the direct costs of underwriting and closing loans are recognized over the life of the related loan as an adjustment to yield using a method that approximates the interest method. Any differences that arise from prepayment will result in a recalculation of the effective yield. Loans are generally placed on nonaccrual status when they are 90 not Loans are considered impaired when, based on current information, management considers it unlikely that collection of principal and interest payments will be made according to contractual terms. If collection of principal is evaluated as doubtful, all payments are applied to principal. Impaired loans are measured: (i) at the present value of expected cash flows discounted at the loan’s effective interest rate; (ii) at the observable market price; or (iii) at the fair value of the collateral if the loan is collateral dependent. If the measure of the impaired loan is less than the recorded investment in the loan, an impairment is recognized through an allocation of the allowance for loan losses and corresponding provision for loan losses. Generally, identified impairments are charged-off against the allowance for loan losses. Troubled debt restructurings are loans for which Hamilton, for legal or economic reasons related to a debtor’s financial difficulties, has granted a concession to the debtor that it otherwise would not ● Reduction of the stated interest rate; ● Extension of the maturity date or dates at a stated interest rate lower than the current market rate for new debt with similar risk; ● Reduction of the face amount or maturity amount of the debt as stated in the instrument or other agreement; or ● Reduction of accrued interest.
Loans and Leases Receivable, Allowance for Loan Losses Policy [Policy Text Block]	Allowance for Loan Losses. The allowance for loan losses is increased by provisions charged to income and reduced by charge-offs, net of recoveries. Management’s periodic evaluation of the adequacy of the allowance is based on the Bank’s past loan loss experience, known and inherent risks in the loan portfolio, adverse situations that may 36 48 Management considers a number of factors in estimating the required level of the allowance. These factors include: historical loss experience in the loan portfolios; the levels and trends in past-due and nonaccrual loans; the status of nonaccrual loans and other loans identified as having the potential for further deterioration; credit risk and industry concentrations; trends in loan volume; the effects of any changes in lending policies and procedures or underwriting standards; and a continuing evaluation of the economic environment. As part of the estimation process, management keeps the net charge-off history as a percentage of loans, as it pertains to each loan segment, constant across all risk ratings and alters the qualitative factors either up or down based upon the respective risk rating for each loan segment.
Finance, Loan and Lease Receivables, Held for Investments, Foreclosed Assets Policy [Policy Text Block]	Foreclosed Real Estate.
Goodwill and Intangible Assets, Policy [Policy Text Block]	Goodwill and Other Intangible Assets. may eight not
Derivatives, Policy [Policy Text Block]	Derivative Financial Instruments and Hedging Activities . For derivatives qualifying as cash flow hedges, the Company also documents its assessment, both at hedge inception and on an ongoing basis, of whether the derivatives that are used in hedging transactions are highly effective in offsetting changes in fair values or cash flows of hedged items. The effective portion of changes in fair value of derivatives that are designated and qualify as cash flow hedges is recognized in the consolidated statement of comprehensive income (loss). The gain or loss relating to the ineffective portion is recognized immediately in the consolidated statement of operations as a gain or loss. When a hedging instrument expires or is sold, or when a hedge no no For derivative instruments designated as fair-value hedges, the change in fair value of the derivative is recognized in the consolidated statement of operations under the same heading as the change in fair value of the hedged item for the portion attributable to the hedged risk. For accounting purposes, if the derivative is highly effective, the change in fair values relating to the asset or liability and the hedged item will offset one no Gains (losses) on derivatives representing either hedge components excluded from the assessment of effectiveness or hedge ineffectiveness are recognized in earnings.
Revenue from Contract with Customer [Policy Text Block]	Revenue from Contracts with Customers . 606, 606” 606, not not 606. not 606
Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block]	Stock Based Compensation.
Income Tax, Policy [Policy Text Block]	Income Taxes. not not
Earnings Per Share, Policy [Policy Text Block]	Earnings Per Common Share.

Note 3 - Earnings Per Share (Ta

Note 3 - Earnings Per Share (Tables)	3 Months Ended
	Jun. 30, 2018
Notes Tables
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]	Three Months Ended Three Months Ended June 30, 2018 June 30, 2017 Net income $ 879,433 $ 392,377 Weighted average common shares outstanding - basic 3,209,046 3,188,895 Weighted average common shares outstanding - diluted 3,230,287 3,198,999 Income per common share - basic and diluted $ 0.27 $ 0.12 Anti-dilutive shares 159,019 121,686

Note 4 - Investment Securitie23

Note 4 - Investment Securities Available for Sale (Tables)	3 Months Ended
	Jun. 30, 2018
Notes Tables
Schedule of Available-for-sale Securities Reconciliation [Table Text Block]	Gross Gross Amortized unrealized unrealized Fair June 30, 2018 cost gains losses value U.S. government agencies $ 2,750,087 $ - $ 34,435 $ 2,715,652 Municipal bonds 12,405,766 - 772,923 11,632,843 Corporate bonds 2,000,000 - 16,750 1,983,250 Mortgage-backed securities 58,605,648 4,212 2,302,908 56,306,952 $ 75,761,501 $ 4,212 $ 3,127,016 $ 72,638,697 Gross Gross Amortized unrealized unrealized Fair March 31, 2018 cost gains losses value U.S. government agencies $ 2,753,346 $ - $ 34,697 $ 2,718,649 Municipal bonds 12,435,068 - 729,077 11,705,991 Corporate bonds 2,000,000 - 45,924 1,954,076 Mortgage-backed securities 61,078,665 12,993 2,066,238 59,025,420 $ 78,267,079 $ 12,993 $ 2,875,936 $ 75,404,136
Investments Classified by Contractual Maturity Date [Table Text Block]	Available for Sale June 30, 2018 March 31, 2018 Amortized Fair Amortized Fair cost value cost value Maturing Within one year $ 2,005,901 $ 1,995,924 $ 2,009,160 $ 1,995,625 Over one to five years 1,230,371 1,190,018 1,231,928 1,196,368 Over five to ten years 3,576,063 3,524,030 3,578,827 3,500,641 Over ten years 10,343,518 9,621,773 10,368,499 9,686,082 Mortgage-backed securities, in monthly installments 58,605,648 56,306,952 61,078,665 59,025,420 $ 75,761,501 $ 72,638,697 $ 78,267,079 $ 75,404,136
Debt Securities, Available-for-sale, Unrealized Loss Position, Fair Value [Table Text Block]	Less than 12 months 12 months or longer Total Gross unrealized Fair Gross unrealized Fair Gross unrealized Fair June 30, 2018 losses value losses value losses value U.S. government agencies $ 24,458 $ 719,728 $ 9,977 $ 1,995,924 $ 34,435 $ 2,715,652 Municipal bonds - - 772,923 11,632,843 772,923 11,632,843 Corporate bonds - - 16,750 1,983,250 16,750 1,983,250 Mortgage-backed securities 494,184 18,259,112 1,808,724 37,779,118 2,302,908 56,038,230 $ 518,642 $ 18,978,840 $ 2,608,374 $ 53,391,135 $ 3,127,016 $ 72,369,975 Less than 12 months 12 months or longer Total Gross unrealized Fair Gross unrealized Fair Gross unrealized Fair March 31, 2018 losses value losses value losses value U.S. government agencies $ 21,163 $ 723,023 $ 13,534 $ 1,995,625 $ 34,697 $ 2,718,648 Municipal bonds - - 729,077 11,705,991 729,077 11,705,991 Corporate bonds - - 45,924 1,954,076 45,924 1,954,076 Mortgage-backed securities 383,987 15,880,948 1,682,251 40,684,836 2,066,238 56,565,784 $ 405,150 $ 16,603,971 $ 2,470,786 $ 56,340,528 $ 2,875,936 $ 72,944,499

Note 5 - Loans Receivable and24

Note 5 - Loans Receivable and Allowance for Loan Losses (Tables)	3 Months Ended
	Jun. 30, 2018
Notes Tables
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]	June 30, 2018 March 31, 2018 Legacy (1) Acquired Total Loans % of Total Legacy (1) Acquired Total Loans % of Total Real estate loans: One-to four-family: Residential (2) $ 84,252,950 $ 70,509,208 $ 154,762,158 41 % $ 85,248,184 $ 72,749,066 $ 157,997,250 41 % Residential construction 5,636,504 - 5,636,504 1 % 5,450,827 - 5,450,827 1 % Investor (3) 8,822,670 17,210,983 26,033,653 7 % 9,275,031 17,460,809 26,735,840 7 % Commercial 102,659,016 10,486,192 113,145,208 30 % 100,403,769 11,762,485 112,166,254 29 % Commercial construction 2,550,462 854,370 3,404,832 1 % 5,763,784 1,352,019 7,115,803 2 % Total real estate loans 203,921,602 99,060,753 302,982,355 80 % 206,141,595 103,324,379 309,465,974 80 % Commercial business (4) 37,061,370 1,905,770 38,967,140 10 % 38,302,739 1,841,226 40,143,965 10 % Home equity loans 13,735,464 5,475,308 19,210,772 5 % 13,956,327 6,039,462 19,995,789 5 % Consumer (5) 17,861,626 739,300 18,600,926 5 % 18,849,448 766,063 19,615,511 5 % Total Loans 272,580,062 107,181,131 379,761,193 100 % 277,250,109 111,971,130 389,221,239 100 % Net deferred loan origination fees and costs (204,650 ) - (204,650 ) (212,746 ) - (212,746 ) Loan premium (discount) 1,844,408 (356,912 ) 1,487,496 1,922,428 (510,036 ) 1,412,392 $ 274,219,820 $ 106,824,219 $ 381,044,039 $ 278,959,791 $ 111,461,094 $ 390,420,885
Allowance for Credit Losses on Financing Receivables [Table Text Block]	June 30, 2018 Three Months Ended June 30, 2018 Residential Real Estate Investor Real Estate Commercial Real Estate Commercial Construction Commercial Business Home Equity Consumer Total Allowance for credit losses: Beginning balance $ 608,723 $ 51,690 $ 1,253,383 $ 33,430 $ 673,982 $ 69,459 $ 131,236 $ 2,821,903 Charge-offs (8,047 ) (5,580 ) (31,320 ) - - - (2,465 ) (47,412 ) Recoveries 767 65 - - - - 1,664 2,496 Provision for credit losses (232 ) 17,331 133,823 (18,637 ) (64,610 ) (1,192 ) (6,483 ) 60,000 Ending balance $ 601,211 $ 63,506 $ 1,355,886 $ 14,793 $ 609,372 $ 68,267 $ 123,952 $ 2,836,987 Allowance allocated to: Legacy Loans: Individually evaluated for impairment $ 261,902 $ - $ - $ - $ - $ - $ - $ 261,902 Collectively evaluated for impairment 339,309 63,506 1,355,886 14,793 609,372 68,267 123,952 2,575,085 Acquired Loans: Individually evaluated for impairment $ - $ - $ - $ - $ - $ - $ - $ - Collectively evaluated for impairment - - - - - - - - June 30, 2017 Three Months Ended June 30, 2017 Residential Real Estate Investor Real Estate Commercial Real Estate Commercial Construction Commercial Business Home Equity Consumer Total Allowance for credit losses: Beginning balance $ 553,539 $ 35,275 $ 1,375,894 $ 9,031 $ 149,461 $ 70,071 $ 1,544 $ 2,194,815 Charge-offs - (4,078 ) - - - - - (4,078 ) Recoveries - 5,307 - - 175 - 1,309 6,791 Provision for credit losses (8,982 ) 27,967 (63,736 ) 17,956 193,458 (5,410 ) (1,253 ) 160,000 Ending balance $ 544,557 $ 64,471 $ 1,312,158 $ 26,987 $ 343,094 $ 64,661 $ 1,600 $ 2,357,528 Allowance allocated to: Legacy Loans: Individually evaluated for impairment $ 278,573 $ - $ - $ - $ - $ - $ - $ 278,573 Collectively evaluated for impairment 265,984 64,471 1,312,158 26,987 343,094 64,661 1,600 2,078,955 Acquired Loans: Individually evaluated for impairment $ - $ - $ - $ - $ - $ - $ - $ - Collectively evaluated for impairment - - - - - - - - June 30, 2018 Residential Real Estate Investor Real Estate Commercial Real Estate Commercial Construction Commercial Business Home Equity Consumer Total Loans: Legacy Loans: Individually evaluated for impairment $ 1,784,758 $ 58,599 $ 7,505,365 $ - $ 858,762 $ 7,408 $ 19,853 $ 10,234,745 Collectively evaluated for impairment 88,104,696 8,764,071 95,153,651 2,550,462 36,202,608 13,728,056 17,841,773 262,345,317 Ending balance $ 89,889,454 $ 8,822,670 $ 102,659,016 $ 2,550,462 $ 37,061,370 $ 13,735,464 $ 17,861,626 $ 272,580,062 Acquired Loans: Individually evaluated for impairment $ 892,087 $ 433,174 $ 197,259 $ - $ - $ - $ 58,706 $ 1,581,226 Collectively evaluated for impairment 69,617,121 16,777,808 10,288,933 854,370 1,905,770 5,475,308 680,595 105,599,905 Ending balance $ 70,509,208 $ 17,210,982 $ 10,486,192 $ 854,370 $ 1,905,770 $ 5,475,308 $ 739,301 $ 107,181,131 June 30, 2017 Residential Real Estate Investor Real Estate Commercial Real Estate Commercial Construction Commercial Business Home Equity Consumer Total Loans: Legacy Loans: Individually evaluated for impairment $ 1,762,599 $ 7,772 $ 1,546,811 $ - $ 723,753 $ 10,980 $ - $ 4,051,915 Collectively evaluated for impairment 73,656,157 7,803,689 91,081,612 2,326,457 34,615,330 14,105,667 2,135,569 225,724,481 Ending balance $ 75,418,756 $ 7,811,461 $ 92,628,423 $ 2,326,457 $ 35,339,083 $ 14,116,647 $ 2,135,569 $ 229,776,396 Acquired Loans: Individually evaluated for impairment $ 1,177,729 $ 183,728 $ 203,215 $ - $ - $ - $ 68,772 $ 1,633,444 Collectively evaluated for impairment 79,118,824 18,249,669 14,196,187 1,191,507 2,037,264 6,668,685 859,928 122,322,064 Ending balance $ 80,296,553 $ 18,433,397 $ 14,399,402 $ 1,191,507 $ 2,037,264 $ 6,668,685 $ 928,700 $ 123,955,508
Past Due Financing Receivables [Table Text Block]	June 30, 2018 March 31, 2018 Legacy Acquired Total Legacy Acquired Total Current $ 263,581,744 $ 105,746,394 $ 369,328,138 $ 270,807,643 $ 109,972,473 $ 380,780,116 Accruing past due loans: 30-59 days past due: Real estate loans: Residential 74,733 82,995 157,728 63,618 689,364 752,982 Investor - - - - - - Commercial - - - - - - Commercial construction - - - - - - Commercial business 14,573 - 14,573 135,502 - 135,502 Home equity loans - - - - - - Consumer 28,161 28,005 56,166 148,876 - 148,876 Total 30-59 days past due 117,467 111,000 228,467 347,996 689,364 1,037,360 60-89 days past due: Real estate loans: Residential 26,172 - 26,172 70,291 - 70,291 Investor - - - - - - Commercial - - - - - - Commercial construction - - - - - - Commercial business - - - 134,524 - 134,524 Home equity loans - - - - - - Consumer - - - 28,300 - 28,300 Total 60-89 days past due 26,172 - 26,172 233,115 - 233,115 90 or more days past due: Real estate loans: Residential - - - - - - Investor 515,243 517,040 1,032,283 734,818 471,423 1,206,241 Commercial - 197,259 197,259 - - - Commercial construction - - - - - - Commercial business - - - - - - Home equity loans - - - - - - Consumer - - - - - - Total 90 or more days past due 515,243 714,299 1,229,542 734,818 471,423 1,206,241 Total accruing past due loans 658,882 825,299 1,484,181 1,315,929 1,160,787 2,476,716 Non-accruing loans: Real estate loans: Residential 515,611 315,038 830,649 526,584 338,060 864,644 Investor 58,599 294,400 352,999 60,949 300,872 361,821 Commercial 7,505,364 - 7,505,364 4,356,264 198,938 4,555,202 Commercial construction - - - - - - Commercial business 240,009 - 240,009 165,285 - 165,285 Home equity loans - - - 12,605 - 12,605 Consumer 19,853 - 19,853 4,850 - 4,850 Non-accruing loans: 8,339,436 609,438 8,948,874 5,126,537 837,870 5,964,407 Total Loans $ 272,580,062 $ 107,181,131 $ 379,761,193 $ 277,250,109 $ 111,971,130 $ 389,221,239 Nonaccrual interest not accrued: Real estate loans: Residential $ 2,248 $ 4,308 $ 6,556 $ 8,250 $ 53,120 $ 61,370 Investor 969 4,138 5,107 8,513 15,604 24,117 Commercial 184,891 - 184,891 294,619 - 294,619 Commercial construction - - - - - - Commercial business 7,462 - 7,462 12,891 - 12,891 Home equity loans - - - 436 - 436 Consumer 446 - 446 385 - 385 Total nonaccrual interest not accrued $ 196,016 $ 8,446 $ 204,462 $ 325,094 $ 68,724 $ 393,818
Impaired Financing Receivables [Table Text Block]	Impaired Loans at June 30, 2018 Three Months Ended June 30, 2018 Unpaid Contractual Average Interest Principal Recorded Related Recorded Income Balance Investment Allowance Investment Recognized Legacy: With no related allowance recorded: Real estate loans: Residential $ 630,805 $ 484,375 $ - $ 490,726 $ 10,492 Investor 124,696 58,599 - 59,355 1,312 Commercial 9,565,282 7,505,365 - 5,957,014 53,278 Commercial construction - - - Commercial business 1,619,151 858,762 - 827,871 8,863 Home equity loans 34,472 7,408 - 17,016 953 Consumer 22,382 19,853 - 19,577 - With an allowance recorded: Real estate loans: Residential 1,327,589 1,300,383 261,902 1,312,130 13,834 Investor - - - - - Commercial - - - - - Commercial construction - - - - - Commercial business - - - - - Home equity loans - - - - - Consumer - - - - - Total legacy impaired 13,324,377 10,234,745 261,902 8,683,689 88,732 Acquired (1): With no related allowance recorded: Real estate loans: Residential 1,052,825 892,087 - 936,819 10,156 Investor 755,381 433,174 - 437,401 9,184 Commercial 247,259 197,259 - 198,098 1,863 Commercial construction - - - - - Commercial business - - - - - Home equity loans 39,418 - - - 419 Consumer 93,577 58,706 - 59,571 2,418 With an allowance recorded: Real estate loans: Residential - - - - - Investor - - - - - Commercial - - - - - Commercial construction - - - - - Commercial business - - - - - Home equity loans - - - - - Consumer - - - - - Total acquired impaired 2,188,460 1,581,226 - 1,631,889 24,040 Total impaired $ 15,512,837 $ 11,815,971 $ 261,902 $ 10,315,578 $ 112,772 Impaired Loans at June 30, 2017 Three Months Ended June 30, 2017 Unpaid Contractual Average Interest Principal Recorded Related Recorded Income Balance Investment Allowance Investment Recognized Legacy: With no related allowance recorded: Real estate loans: Residential $ 581,380 $ 449,473 $ - $ 453,305 $ 288 Investor 50,947 7,772 - 7,847 - Commercial 3,433,621 1,546,811 - 1,546,812 - Commercial construction - - - - - Commercial business 1,138,939 723,753 - 740,966 25,151 Home equity loans 36,734 10,980 - 11,510 93 Consumer - - - - - With an allowance recorded: Real estate loans: Residential 1,340,394 1,313,126 278,573 1,317,495 12,802 Investor - - - - - Commercial - - - - - Commercial construction - - - - - Commercial business - - - - - Home equity loans - - - - - Consumer - - - - - Total legacy impaired 6,582,015 4,051,915 278,573 4,077,935 38,334 Acquired (1): With no related allowance recorded: Real estate loans: Residential 1,370,261 1,177,729 - 1,184,445 11,221 Investor 333,362 183,728 - 168,815 3,102 Commercial 253,215 203,215 - 203,870 1,912 Commercial construction - - - - - Commercial business - - - - - Home equity loans 44,852 - - - 288 Consumer 107,670 68,772 - 70,988 1,927 With an allowance recorded: Real estate loans: Residential - - - - - Investor - - - - - Commercial - - - - - Commercial construction - - - - - Commercial business - - - - - Home equity loans - - - - - Consumer - - - - - Total acquired impaired 2,109,360 1,633,444 - 1,628,118 18,450 Total impaired $ 8,691,375 $ 5,685,359 $ 278,573 $ 5,706,053 $ 56,784 Impaired Loans at March 31, 2018 For the Year Ended March 31, 2018 Unpaid Contractual Average Interest Principal Recorded Related Recorded Income Balance Investment Allowance Investment Recognized Legacy: With no related allowance recorded: Real estate loans: Residential $ 665,051 $ 517,600 $ - $ 548,636 $ 9,257 Investor 126,389 60,949 - 118,175 3,772 Commercial 6,487,088 4,356,264 - 4,634,504 1,077 Commercial construction - - - - - Commercial business 1,562,756 795,410 - 1,082,773 103,474 Home equity loans 47,650 20,595 - 22,604 392 Consumer 48,115 34,266 - 38,514 1,576 With an allowance recorded: Real estate loans: Residential 1,336,078 1,309,440 266,256 1,328,919 51,928 Investor - - - - Commercial - - - - - Commercial construction - - - - - Commercial business - - - - - Home equity loans - - - - - Consumer - - - - - Total legacy impaired 10,273,127 7,094,524 266,256 7,774,125 171,476 Acquired (1): With no related allowance recorded: Real estate loans: Residential 1,082,484 922,252 - 945,602 26,437 Investor 682,045 444,254 - 659,246 37,368 Commercial 248,938 198,938 - 201,519 7,336 Commercial construction - - - - - Commercial business - - - - - Home equity loans 40,473 - - - 1,329 Consumer 95,986 60,371 - 64,013 6,062 With an allowance recorded: Real estate loans: Residential - - - - - Investor - - - - - Commercial - - - - - Commercial construction - - - - - Commercial business - - - - - Home equity loans - - - - - Consumer - - - - - Total acquired impaired 2,149,926 1,625,815 - 1,870,380 78,532 Total impaired $ 12,423,053 $ 8,720,339 $ 266,256 $ 9,644,505 $ 250,008
Certain Loans Acquired In Transfer not Accounted for as Debt Securities Changes in Recorded Investment Schedule [Table Text Block]	June 30, 2018 June 30, 2017 Recorded investment at beginning of period $ 1,021,424 $ 1,341,935 Accretion 1,526 (360 ) Reductions for payments (21,493 ) (46,664 ) Recorded investment at end of period $ 1,001,457 $ 1,294,911 Oustanding principal balance at end of period $ 1,247,145 $ 1,630,658
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Table Text Block]	June 30, 2018 June 30, 2017 Accretable yield, beginning of period $ 31,895 $ 59,639 Accretion (1,526 ) 360 Reclassification from nonaccretable difference - - Accretable yield, end of period $ 30,369 $ 59,999
Troubled Debt Restructurings on Financing Receivables [Table Text Block]	Number of June 30, 2018 contracts Performing Nonperforming Total Real estate loans: Residential 16 $ 1,242,975 $ 306,235 $ 1,549,210 Investor - - - - Commercial 2 - 1,195,421 1,195,421 Commercial construction - - - - Commercial business 1 604,181 - 604,181 Home equity loans - - - - Consumer - - - - 19 $ 1,847,156 $ 1,501,656 $ 3,348,812 Number of March 31, 2018 contracts Performing Nonperforming Total Real estate loans: Residential 15 $ 1,230,166 $ 312,964 $ 1,543,130 Investor - - - - Commercial 2 - 1,195,421 1,195,421 Commercial construction - - - - Commercial business 1 605,488 - 605,488 Home equity loans - - - - Consumer - - - - 18 $ 1,835,654 $ 1,508,385 $ 3,344,039
Schedule Of Modified Troubled Debt Restructurings On Financing Receivables [Table Text Block]	Loans Modified as a TDR for the Three Months Ended June 30, 2018 June 30, 2017 Troubled Debt Restructurings Number of contracts Outstanding recorded investment Number of contracts Outstanding recorded investment Real estate loans: Residential 1 $ 20,866 1 $ 1,931
Financing Receivable Credit Quality Indicators [Table Text Block]	June 30, 2018 March 31, 2018 LEGACY ACQUIRED TOTAL LEGACY ACQUIRED TOTAL Risk Rating: Rating - Pass: Real estate loans: Residential $ 87,092,026 $ 68,580,711 $ 155,672,737 $ 87,863,805 $ 70,901,293 $ 158,765,098 Investor 8,764,071 16,487,657 25,251,728 9,214,082 16,719,346 25,933,428 Commercial 95,153,651 10,288,933 105,442,584 92,955,370 11,563,547 104,518,917 Commercial construction 2,550,462 854,370 3,404,832 5,763,784 1,352,019 7,115,803 Commercial Business 36,806,789 1,905,770 38,712,559 37,978,293 1,841,226 39,819,519 Home Equity 13,728,056 5,367,653 19,095,709 13,935,732 5,928,787 19,864,519 Consumer 17,841,773 707,772 18,549,545 18,733,489 733,669 19,467,158 Total Pass 261,936,828 104,192,866 366,129,694 266,444,555 109,039,887 375,484,442 Rating - Special Mention: Real estate loans: Residential 2,370,659 1,036,410 3,407,069 2,365,652 925,521 3,291,173 Investor - 291,458 291,458 - 297,209 297,209 Commercial - - - 3,092,135 - 3,092,135 Commercial construction - - - - - - Commercial Business - - - 134,524 - 134,524 Home Equity - 107,655 107,655 - 110,675 110,675 Consumer - - - 96,474 - 96,474 Total Special Mention 2,370,659 1,435,523 3,806,182 5,688,785 1,333,405 7,022,190 Rating - Substandard: Real estate loans: Residential 426,769 892,087 1,318,856 469,554 922,252 1,391,806 Investor 58,599 431,868 490,467 60,949 444,254 505,203 Commercial 7,505,365 197,259 7,702,624 4,356,264 198,938 4,555,202 Commercial construction - - - - - - Commercial Business 254,581 - 254,581 189,922 - 189,922 Home Equity 7,408 - 7,408 20,595 - 20,595 Consumer 19,853 31,528 51,381 19,485 32,394 51,879 Total - Substandard 8,272,575 1,552,742 9,825,317 5,116,769 1,597,838 6,714,607 Rating - Doubtful - - - - - - Rating - Loss - - - - - - TOTAL LOANS $ 272,580,062 $ 107,181,131 $ 379,761,193 $ 277,250,109 $ 111,971,130 $ 389,221,239
Outstanding Commitments And Unused Lines Of Credit [Table Text Block]	Outstanding Commitment and June 30, March 31, Used Lines of Credit 2018 2018 Unused commercial lines of credit $ 11,325,807 $ 9,187,810 Unused home equity lines of credit 24,296,445 22,560,376 Unused consumer lines of credit 185,417 29,331 Residential construction loan commitments 5,600,272 4,234,076 Commercial construction loan commitments 8,147,129 8,968,416 Home equity loan commitments 696,000 389,600 Commercial loan commitments 4,490,151 5,125,000 Standby letter of credit 415,607 250,224

Note 6 - Goodwill and Other I25

Note 6 - Goodwill and Other Intangible Asset (Tables)	3 Months Ended
	Jun. 30, 2018
Notes Tables
Schedule of Intangible Assets and Goodwill [Table Text Block]	Core deposit Goodwill intangible Balance April 1, 2017 $ 8,563,530 $ 739,298 Amortization - (31,516 ) Balance June 30, 2017 8,563,530 707,782 Core deposit Goodwill intangible Balance April 1, 2018 $ 8,563,530 $ 613,234 Amortization - (31,516 ) Balance June 30, 2018 $ 8,563,530 $ 581,718
Finite-lived Intangible Assets Amortization Expense [Table Text Block]	Year ending March 31, Amount 2019 94,554 2020 123,737 2021 98,070 2022 98,070 2023 98,070 2024 64,174 2025 5,043 $ 581,718

Note 7 - Derivative - Interes26

Note 7 - Derivative - Interest Rate Swap Agreement (Tables)	3 Months Ended
	Jun. 30, 2018
Notes Tables
Schedule of Cash Flow Hedging Instruments, Statements of Financial Performance and Financial Position, Location [Table Text Block]	6/30/2018 3/31/2018 Notional Notional Amount Fair Value Amount Fair Value Included in assets: Interest rate swaps related to FHLB Advances $ 11,550,000 $ 315,884 $ 11,550,000 $ 217,464
Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss) [Table Text Block]	Three Month and Period Ended June 30, 2018 Amount of Gain Amount of Gain Amount of Gain (Loss) Recognized (Loss) Reclassified (Loss) Recognized in in OCI from OCI to Other Noninterest Income (Effective Portion) Interest Income (Ineffective Portion) Interest Rate Contracts $ 98,039 $ - $ (381 ) Three Month and Period Ended June 30, 2017 Amount of Gain Amount of Gain Amount of Gain (Loss) Recognized (Loss) Reclassified (Loss) Recognized in in OCI from OCI to Other Noninterest Income (Effective Portion) Interest Income (Ineffective Portion) Interest Rate Contracts $ (126,314 ) $ - $ -
Fair Value Hedging [Member]
Notes Tables
Schedule of Derivative Instruments [Table Text Block]	June 30, 2018 March 31, 2018 Notional Amount Principal Amount Fair Value Notional Amount Principal Amount Fair Value Included in Loans and Leases: Commercial real estate loan $ - $ 3,070,825 $ 2,973,514 $ - $ 3,091,892 $ 3,022,744 Included in Other Assets: Interest Rate Swap $ 3,070,825 $ - $ 97,311 $ 3,091,892 - $ 69,148
Cash Flow Hedging [Member]
Notes Tables
Schedule of Derivative Instruments [Table Text Block]	Notional Effective Pay Fixed Receive Interest Rate Swap Amount Start Date Maturity Date Rate Floating Rate FHLB Advance Swap 1 $ 1,850,000 March 9, 2017 March 9, 2022 2.24 % 3-Month LIBOR FHLB Advance Swap 2 1,850,000 March 9, 2017 March 9, 2024 2.41 % 3-Month LIBOR FHLB Advance Swap 3 1,850,000 March 9, 2017 March 9, 2027 2.57 % 3-Month LIBOR FHLB Advance Swap 4 2,000,000 March 29, 2017 March 29, 2022 2.08 % 3-Month LIBOR FHLB Advance Swap 5 2,000,000 March 29, 2017 March 29, 2024 2.24 % 3-Month LIBOR FHLB Advance Swap 6 2,000,000 March 29, 2017 March 29, 2027 2.40 % 3-Month LIBOR Total Notional Amount $ 11,550,000

Note 8 - Deposits (Tables)

Note 8 - Deposits (Tables)	3 Months Ended
	Jun. 30, 2018
Notes Tables
Summary of Deposits [Table Text Block]	June 30, 2018 March 31, 2018 Amount % of Total Amount % of Total Savings $ 40,965,710 10.1 % $ 42,499,381 10.6 % Noninterest-bearing checking 27,485,033 6.8 % 29,557,943 7.3 % Interest-bearing checking 29,482,021 7.3 % 27,219,286 6.7 % Money market accounts 66,235,735 16.4 % 58,466,228 14.4 % Time deposits 239,974,615 59.4 % 246,988,613 61.0 % $ 404,143,114 100.0 % $ 404,731,451 100.0 % Premium on deposits asssumed 330,947 411,524 Total deposits $ 404,474,061 $ 405,142,975

Note 9 - Lines of Credit and 28

Note 9 - Lines of Credit and Federal Home Loan Bank Advances (Tables)	3 Months Ended
	Jun. 30, 2018
Notes Tables
Schedule of Long-term Debt Instruments [Table Text Block]	June 30, 2018 March 31, 2018 Amount Rate Maturity Date Amount Rate Maturity Date FHLB advance (1) $ 5,550,000 2.08 % 9/10/2018 $ 5,550,000 1.84 % 6/11/2018 FHLB advance (2) 6,000,000 2.07 % 10/1/2018 6,000,000 1.90 % 6/29/2018 FHLB advance 1,000,000 2.60 % 7/2/2018 1,000,000 2.60 % 7/2/2018 FHLB advance 1,000,000 3.05 % 7/3/2018 1,000,000 3.05 % 7/3/2018 FHLB advance 5,000,000 3.94 % 7/23/2018 5,000,000 3.94 % 7/23/2018 FHLB advance 1,000,000 1.74 % 7/31/2018 1,000,000 1.74 % 7/31/2018 FHLB advance 1,000,000 1.40 % 8/21/2018 1,000,000 1.40 % 8/21/2018 FHLB advance 4,000,000 1.94 % 8/27/2018 4,000,000 1.94 % 8/27/2018 FHLB advance 3,000,000 1.41 % 8/27/2018 3,000,000 1.41 % 8/27/2018 FHLB advance 5,000,000 3.38 % 9/19/2018 5,000,000 3.38 % 9/19/2018 FHLB advance - - - 1,000,000 2.60 % 10/2/2018 FHLB advance 1,000,000 1.95 % 12/31/2018 1,000,000 1.95 % 12/31/2018 FHLB advance 3,000,000 1.38 % 7/31/2019 3,000,000 1.38 % 7/31/2019 FHLB advance 3,000,000 1.96 % 8/26/2019 3,000,000 1.96 % 8/26/2019 FHLB advance 3,000,000 1.59 % 8/26/2019 3,000,000 1.59 % 8/26/2019 FHLB advance 3,000,000 1.42 % 8/26/2019 3,000,000 1.42 % 8/26/2019 FHLB advance 1,500,000 1.95 % 11/25/2019 1,500,000 1.95 % 11/25/2019 FHLB advance 1,500,000 1.78 % 11/27/2019 1,500,000 1.78 % 11/27/2019 FHLB advance 3,000,000 2.31 % 2/3/2020 3,000,000 2.31 % 2/3/2020 FHLB advance 1,000,000 2.15 % 11/30/2020 1,000,000 2.15 % 11/30/2020 FHLB advance 2,000,000 2.28 % 12/28/2020 2,000,000 2.28 % 12/28/2020 FHLB advance 2,000,000 2.49 % 2/1/2021 2,000,000 2.49 % 2/1/2021 FHLB advance 3,000,000 1.48 % 8/25/2021 3,000,000 1.48 % 8/25/2021 59,550,000 60,550,000 Premium on FHLB advances assumed 49,093 122,140 Total borrowings $ 59,599,093 $ 60,672,140

Note 10 - Regulatory Capital 29

Note 10 - Regulatory Capital Ratios (Tables)	3 Months Ended
	Jun. 30, 2018
Notes Tables
Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table Text Block]	Actual Minimum Capital Required - Basel III Phase-In Schedule Minimum Capital Required - Basel III Fully Phased-In To be well capitalized (1) Amount Ratio Amount Ratio Amount Ratio Amount Ratio (dollars in thousands) June 30, 2018 Common equity tier 1 capital (to risk-weighted assets) Hamilton Bank $ 40,150 11.04 % $ 23,193 6.375 % $ 25,466 7.00 % $ 23,647 6.50 % Hamilton Bancorp 48,320 13.24 % 23,582 6.375 % 25,894 7.00 % 24,044 6.50 % Total risk-based capital (to risk-weighted assets) Hamilton Bank 43,038 11.83 % 35,926 9.875 % 38,200 10.50 % 36,380 10.00 % Hamilton Bancorp 51,208 14.03 % 36,529 9.875 % 38,841 10.50 % 36,992 10.00 % Tier 1 capital (to risk-weighted assets) Hamilton Bank 40,150 11.04 % 28,650 7.875 % 30,923 8.50 % 29,104 8.00 % Hamilton Bancorp 48,320 13.24 % 29,131 7.875 % 31,443 8.50 % 29,593 8.00 % Tier 1 capital (to adjusted total assets) Hamilton Bank 40,150 7.82 % 20,528 4.000 % 20,528 4.00 % 25,660 5.00 % Hamilton Bancorp 48,320 9.34 % 20,674 4.000 % 20,674 4.00 % 25,843 5.00 % March 31, 2018 Common equity tier 1 capital (to risk-weighted assets) Hamilton Bank $ 39,126 10.61 % $ 23,498 6.375 % $ 25,802 7.00 % $ 23,959 6.50 % Hamilton Bancorp 47,308 12.79 % 23,582 6.375 % 25,894 7.00 % 24,044 6.50 % Total risk-based capital (to risk-weighted assets) Hamilton Bank 41,998 11.39 % 36,399 9.875 % 38,703 10.50 % 36,860 10.00 % Hamilton Bancorp 50,180 13.57 % 36,529 9.875 % 38,841 10.50 % 36,992 10.00 % Tier 1 capital (to risk-weighted assets) Hamilton Bank 39,126 10.61 % 29,027 7.875 % 31,331 8.50 % 29,488 8.00 % Hamilton Bancorp 47,308 12.79 % 29,131 7.875 % 31,443 8.50 % 29,593 8.00 % Tier 1 capital (to adjusted total assets) Hamilton Bank 39,126 7.64 % 20,497 4.000 % 20,497 4.00 % 25,621 5.00 % Hamilton Bancorp 47,308 9.15 % 20,674 4.000 % 20,674 4.00 % 25,843 5.00 %

Note 11 - Stock Based Compens30

Note 11 - Stock Based Compensation (Tables)	3 Months Ended
	Jun. 30, 2018
Notes Tables
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]	Grant Date Number of Options Granted Risk Free Interest Rate Expected Term (in years) Expected Stock Price Volatility Dividend Yield Fair Value of Options Granted February 3, 2014 225,150 2.07 % 7.0 27.30 % 0.00 % $ 4.65 November 1, 2016 19,000 1.61 % 7.0 27.17 % 0.00 % $ 4.35 February 3, 2017 3,700 2.27 % 7.0 27.26 % 0.00 % $ 5.18 April 1, 2018 20,354 2.67 % 7.0 19.61 % 0.00 % $ 4.05
Share-based Compensation, Stock Options, Activity [Table Text Block]	June 30, 2018: Shares Weighted Average Exercise Price Weighted Average Remaining Contractual Term (in years) Outstanding at April 1, 2018 242,350 $ 13.84 6.1 Granted 20,354 14.25 9.8 Exercised - - - Forfeited, exchanged or expired - - - Outstanding at June 30, 2018 262,704 $ 13.87 6.1 Vested at June 30, 2018 180,260 $ 13.85 5.7 March 31, 2018: Shares Weighted Average Exercise Price Weighted Average Remaining Contractual Term (in years) Outstanding at April 1, 2017 242,350 $ 13.84 7.1 Granted - - - Exercised - - - Forfeited, exchanged or expired - - - Outstanding at March 31, 2018 242,350 $ 13.84 6.1 Vested at March 31, 2018 180,260 $ 13.84 5.8
Schedule of Nonvested Share Activity [Table Text Block]	Weighted-Average June 30, 2018: Shares Fair Value Nonvested shares at April 1, 2018 19,440 $ 13.74 Granted 8,801 14.25 Vested - - Forfeited - - Nonvested shares at June 30, 2018 28,241 $ 13.90 Fair Value of shares vested at June 30, 2018 $ 1,012,022 Weighted-Average March 31, 2018: Shares Fair Value Nonvested shares at April 1, 2017 36,220 $ 13.76 Granted - - Vested (16,780 ) 13.78 Forfeited - - Nonvested shares at March 31, 2018 19,440 $ 13.74 Fair Value of shares vested at March 31, 2018 $ 918,555

Note 12 - Fair Value Measurem31

Note 12 - Fair Value Measurements (Tables)	3 Months Ended
	Jun. 30, 2018
Notes Tables
Fair Value, Assets Measured on Recurring Basis [Table Text Block]	Level 1 Level 2 Level 3 June 30, 2018 inputs inputs inputs Total U.S. government agencies $ - $ 2,715,652 $ - $ 2,715,652 Municipal bonds - 11,632,843 - 11,632,843 Corporate bonds - 1,983,250 1,983,250 Mortgage-backed securities - 56,306,952 - 56,306,952 Total investment securities available for sale $ - $ 70,655,447 $ 1,983,250 $ 72,638,697 Level 1 Level 2 Level 3 March 31, 2018 inputs inputs inputs Total U.S. government agencies $ - $ 2,718,649 $ - $ 2,718,649 Municipal bonds - 11,705,991 - 11,705,991 Corporate bonds - 1,954,076 1,954,076 Mortgage-backed securities - 59,025,404 16 59,025,420 Total investment securities available for sale $ - $ 73,450,044 $ 1,954,092 $ 75,404,136
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]	Level 1 Level 2 Level 3 June 30, 2018 inputs inputs inputs Total Loans - Commercial real estate loan $ - $ 2,973,514 $ - $ 2,973,514 Derivative - Interest rate swap designated as fair value hedge - 97,311 - 97,311 Derivatives - Interest rate swaps designated as cash flow hedge - 315,884 - 315,884 Level 1 Level 2 Level 3 March 31, 2018 inputs inputs inputs Total Loans - Commercial real estate loan $ - $ 3,022,744 $ - $ 3,022,744 Derivative - Interest rate swap designated as fair value hedge - 69,148 - 69,148 Derivatives - Interest rate swaps designated as cash flow hedge - 217,464 - 217,464
Fair Value Measurement Inputs and Valuation Techniques [Table Text Block]	Valuation Unobservable Range of Description Fair Value Methodology Inputs Inputs Investment securities $ 1,983,250 3rd party valuation Discount to reflect current market conditions 0.00% - 10.00% Valuation Unobservable Range of Description Fair Value Methodology Inputs Inputs Impaired loans, net of allowance $ 11,554,069 Appraised value Discount to reflect current market conditions 0.00% - 25.00% Discounted cash flows Discount rates 2.63% - 7.25% Foreclosed real estate $ 457,778 Appraised value Discount to reflect current market conditions 0.00% - 25.00%
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]	Three Months Fiscal Year Ended Ended June 30, 2018 March 31, 2018 Balance, beginning of year $ 1,954,092 $ 1,930,786 Transfers in: Corporate bonds - 1,954,076 Mortgage-backed securities - 16 Municipal bonds - - Transfers out: Corporate bonds - - Mortgage-backed securities 16 2,473 Municipal bonds - 1,928,313 Change in valuation 29,174 - Balance, end of year $ 1,983,250 $ 1,954,092
Fair Value Measurements, Nonrecurring [Table Text Block]	Level 1 Level 2 Level 3 inputs inputs inputs Total June 30, 2018 Impaired loans $ - $ - $ 11,554,069 $ 11,554,069 Foreclosed real estate - - 457,778 457,778 Level 1 Level 2 Level 3 inputs inputs inputs Total March 31, 2018 Impaired loans $ - $ - $ 8,454,083 $ 8,454,083 Foreclosed real estate - - 457,778 457,778
Summar yOf Beginning And Ending Balance Of Foreclosed Real Estate [Table Text Block]	Three Months Fiscal Year Ended Ended June 30, 2018 March 31, 2018 Balance at beginning of period $ 457,778 $ 503,094 Transfer to foreclosed real estate - 23,834 Write-down of foreclosed real estate - (31,955 ) Proceeds from sale of foreclosed real estate - (35,896 ) Loss on sale of foreclosed real estate - (1,299 ) Balance at end of period $ 457,778 $ 457,778
Fair Value, by Balance Sheet Grouping [Table Text Block]	June 30, 2018 March 31, 2018 Carrying Fair Carrying Fair amount value amount value Financial assets Level 1 inputs Cash and cash equivalents $ 36,059,385 $ 36,059,385 $ 23,368,415 $ 23,368,415 Level 2 inputs Federal Home Loan Bank stock 2,994,900 2,994,900 3,122,400 3,122,400 Bank-owned life insurance 17,569,375 17,569,375 17,455,850 17,455,850 Level 3 inputs Certificates of deposit held as investment 499,167 484,380 499,189 492,751 Loans receivable, net of unearned income 377,973,214 367,539,525 387,328,993 385,818,260 Financial liabilities Level 2 inputs Deposits 404,474,061 404,848,830 405,142,975 405,026,957 Advance payments by borrowers for taxes and insurance 2,707,378 2,707,378 1,962,665 1,962,665 Borrowings 59,599,093 58,581,779 60,672,140 60,494,922

Note 1 - Nature of Operations32

Note 1 - Nature of Operations and Summary of Significant Accounting Policies (Details Textual)	May 13, 2016USD ($)$ / shares	Sep. 11, 2015USD ($)	Oct. 10, 2012USD ($)$ / sharesshares	Jun. 30, 2018shares	Mar. 31, 2018shares	Apr. 15, 2015$ / shares
Common Stock, Shares, Issued, Total | shares			3,703,000	3,416,414	3,407,613
Share Price | $ / shares			$ 10
Proceeds from Issuance of Common Stock			$ 35,580,000
Noninterest Expense Offering Cost			$ 1,450,000
Employee Stock Option Plan, Subscribed Percentage			8.00%
Employee Stock Ownership Plan (ESOP), Number of Allocated Shares | shares			296,240
Number of Branches				7
Core Deposits [Member]
Finite-Lived Intangible Asset, Useful Life				8 years
Fraternity Community Bancorp, Inc. [Member]
Business Acquisition, Share Price | $ / shares	$ 19.25
Payments to Acquire Businesses, Gross	$ 25,700,000
Fairmount Bancorp, Inc. [Member]
Business Acquisition, Share Price | $ / shares						$ 30
Business Combination, Consideration Transferred, Total		$ 15,400,000

Note 3 - Earnings Per Share - B

Note 3 - Earnings Per Share - Basic and Diluted Earnings Per Share (Details) - USD ($)	3 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Net income	$ 879,433	$ 392,377
Weighted average common shares outstanding - basic (in shares)	3,209,046	3,188,895
Weighted average common shares outstanding - diluted (in shares)	3,230,287	3,198,999
Income per common share - basic and diluted (in dollars per share)	$ 0.27	$ 0.12
Anti-dilutive shares (in shares)	159,019	121,686

Note 4 - Investment Securitie34

Note 4 - Investment Securities Available for Sale (Details Textual) - USD ($)	3 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Mar. 31, 2018
Proceeds from Sale of Debt Securities, Available-for-sale	$ 0	$ 0
Debt Securities, Available-for-sale, Amortized Cost, Total	75,761,501		$ 78,267,079
Debt Securities, Available-for-sale, Total	72,638,697		75,404,136
Pledged Financial Instruments, Not Separately Reported, Securities, Total	744,186		744,186
Collateral Pledged [Member]
Debt Securities, Available-for-sale, Restricted	719,728		$ 723,023
Fraternity Community Bancorp, Inc. [Member] | Mortgage-backed Securities, Issued by Private Enterprises [Member]
Debt Securities, Available-for-sale, Amortized Cost, Total	53,850
Debt Securities, Available-for-sale, Total	$ 54,709

Note 4 - Investment Securitie35

Note 4 - Investment Securities Available for Sale - Amortized Cost and Fair Value of Securities (Details) - USD ($)	Jun. 30, 2018	Mar. 31, 2018
Securities available for sale, amortized cost	$ 75,761,501	$ 78,267,079
Securities available for sale, gross unrealized gains	4,212	12,993
Securities available for sale, gross unrealized losses	3,127,016	2,875,936
Investment securities available for sale, at fair value	72,638,697	75,404,136
US Government Agencies Debt Securities [Member]
Securities available for sale, amortized cost	2,750,087	2,753,346
Securities available for sale, gross unrealized gains
Securities available for sale, gross unrealized losses	34,435	34,697
Investment securities available for sale, at fair value	2,715,652	2,718,649
US States and Political Subdivisions Debt Securities [Member]
Securities available for sale, amortized cost	12,405,766	12,435,068
Securities available for sale, gross unrealized gains
Securities available for sale, gross unrealized losses	772,923	729,077
Investment securities available for sale, at fair value	11,632,843	11,705,991
Corporate Debt Securities [Member]
Securities available for sale, amortized cost	2,000,000	2,000,000
Securities available for sale, gross unrealized gains
Securities available for sale, gross unrealized losses	16,750	45,924
Investment securities available for sale, at fair value	1,983,250	1,954,076
Collateralized Mortgage Backed Securities [Member]
Securities available for sale, amortized cost	58,605,648	61,078,665
Securities available for sale, gross unrealized gains	4,212	12,993
Securities available for sale, gross unrealized losses	2,302,908	2,066,238
Investment securities available for sale, at fair value	$ 56,306,952	$ 59,025,420

Note 4 - Investment Securitie36

Note 4 - Investment Securities Available for Sale - Debt Securities By Contractual Maturity (Details) - USD ($)	Jun. 30, 2018	Mar. 31, 2018
Amortized cost, securities available for sale, maturing within one year	$ 2,005,901	$ 2,009,160
Fair value, securities available for sale, maturing within one year	1,995,924	1,995,625
Amortized cost, securities available for sale, maturing over one to five years	1,230,371	1,231,928
Fair value, securities available for sale, maturing over one to five years	1,190,018	1,196,368
Amortized cost, securities available for sale maturing over five to ten years	3,576,063	3,578,827
Fair value, securities available for sale, maturing over five to ten years	3,524,030	3,500,641
Amortized cost, securities available for sale, maturing over ten years	10,343,518	10,368,499
Fair value, securities available for sale, maturing over ten years	9,621,773	9,686,082
Amortized cost of mortgage-backed securities, in monthly installments	58,605,648	61,078,665
Fair value of mortgage-backed securities, in monthly installments	56,306,952	59,025,420
Amortized cost of securities available for sale	75,761,501	78,267,079
Fair value of securities available for sale	$ 72,638,697	$ 75,404,136

Note 4 - Investment Securitie37

Note 4 - Investment Securities Available for Sale - Securities In a Continuous Unrealized Loss Position (Details) - USD ($)	Jun. 30, 2018	Mar. 31, 2018
Securities available for sale, less than 12 months, gross unrealized losses	$ 518,642	$ 405,150
Securities available for sale, less than 12 months, fair value	18,978,840	16,603,971
Securities available for sale, 12 months or longer, gross unrealized losses	2,608,374	2,470,786
Securities available for sale, 12 months or longer, fair value	53,391,135	56,340,528
Securities available for sale, total gross unrealized losses	3,127,016	2,875,936
Securities available for sale, total fair value	72,369,975	72,944,499
US Government Agencies Debt Securities [Member]
Securities available for sale, less than 12 months, gross unrealized losses	24,458	21,163
Securities available for sale, less than 12 months, fair value	719,728	723,023
Securities available for sale, 12 months or longer, gross unrealized losses	9,977	13,534
Securities available for sale, 12 months or longer, fair value	1,995,924	1,995,625
Securities available for sale, total gross unrealized losses	34,435	34,697
Securities available for sale, total fair value	2,715,652	2,718,648
US States and Political Subdivisions Debt Securities [Member]
Securities available for sale, less than 12 months, gross unrealized losses
Securities available for sale, less than 12 months, fair value
Securities available for sale, 12 months or longer, gross unrealized losses	772,923	729,077
Securities available for sale, 12 months or longer, fair value	11,632,843	11,705,991
Securities available for sale, total gross unrealized losses	772,923	729,077
Securities available for sale, total fair value	11,632,843	11,705,991
Corporate Debt Securities [Member]
Securities available for sale, less than 12 months, gross unrealized losses
Securities available for sale, less than 12 months, fair value
Securities available for sale, 12 months or longer, gross unrealized losses	16,750	45,924
Securities available for sale, 12 months or longer, fair value	1,983,250	1,954,076
Securities available for sale, total gross unrealized losses	16,750	45,924
Securities available for sale, total fair value	1,983,250	1,954,076
Collateralized Mortgage Backed Securities [Member]
Securities available for sale, less than 12 months, gross unrealized losses	494,184	383,987
Securities available for sale, less than 12 months, fair value	18,259,112	15,880,948
Securities available for sale, 12 months or longer, gross unrealized losses	1,808,724	1,682,251
Securities available for sale, 12 months or longer, fair value	37,779,118	40,684,836
Securities available for sale, total gross unrealized losses	2,302,908	2,066,238
Securities available for sale, total fair value	$ 56,038,230	$ 56,565,784

Note 5 - Loans Receivable and38

Note 5 - Loans Receivable and Allowance for Loan Losses (Details Textual)	3 Months Ended
	Jun. 30, 2018USD ($)	Jun. 30, 2017USD ($)	Mar. 31, 2018USD ($)	Mar. 31, 2017USD ($)
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Carrying Amount, Net	$ 1,001,457	$ 1,294,911	$ 1,021,424	$ 1,341,935
Limit Over Which Private Mortgage Insurance is Required	80.00%
Loans and Leases Receivable, Impaired, Commitment to Lend	$ 0
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	0	0
SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member]
SEC Schedule, 12-09, Valuation Allowances and Reserves, Amount, Ending Balance	$ 52,000		50,000
Doubtful [Member]
Loans Receivable, Net, Total	$ 0		0
Minimum [Member]
Maximum Percentage of Value of Property Against Lending	75.00%
Maximum [Member]
Maximum Percentage of Value of Property Against Lending	95.00%
Real Estate Loans [Member] | One to four family, Residential [Member] | Legacy Loans [Member]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Carrying Amount, Net			19,200,000
Commercial Portfolio Segment [Member] | Commercial Lease Loans Purchased [Member] | Legacy Loans [Member]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Carrying Amount, Net			15,500,000
Commercial Portfolio Segment [Member] | Guaranteed SBA Purchased Loans [Member] | Legacy Loans [Member]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Carrying Amount, Net			3,200,000
Commercial Portfolio Segment [Member] | Recreational Vehicle Loans [Member] | Legacy Loans [Member]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Carrying Amount, Net			$ 19,900,000

Note 5 - Loans Receivable and39

Note 5 - Loans Receivable and Allowance for Loan Losses - Loans Receivable Excluding Loans Held for Sale (Details) - USD ($)		Jun. 30, 2018		Mar. 31, 2018		Jun. 30, 2017
Loans		$ 379,761,193		$ 389,221,239
Percentage of loans		100.00%		100.00%
Net deferred loan origination fees and costs		$ (204,650)		$ (212,746)
Loan premium (discount)		1,487,496		1,412,392
Net loans		381,044,039		390,420,885
Real Estate Loans [Member]
Loans		$ 302,982,355		$ 309,465,974
Percentage of loans		80.00%		80.00%
Real Estate Loans [Member] | One to four family, Residential [Member]
Loans	[1]	$ 154,762,158		$ 157,997,250
Percentage of loans	[1]	41.00%		41.00%
Real Estate Loans [Member] | One to four family, Residential construction [Member]
Loans		$ 5,636,504		$ 5,450,827
Percentage of loans		1.00%		1.00%
Real Estate Loans [Member] | One to four family, Investor [Member]
Loans	[2]	$ 26,033,653		$ 26,735,840
Percentage of loans	[2]	7.00%		7.00%
Real Estate Loans [Member] | Commercial [Member]
Loans		$ 113,145,208		$ 112,166,254
Percentage of loans		30.00%		29.00%
Real Estate Loans [Member] | Commercial Construction [Member]
Loans		$ 3,404,832		$ 7,115,803
Percentage of loans		1.00%		2.00%
Commercial Portfolio Segment [Member]
Loans	[3]	$ 38,967,140		$ 40,143,965
Percentage of loans	[3]	10.00%		10.00%
Home Equity Loans [Member]
Loans		$ 19,210,772		$ 19,995,789
Percentage of loans		5.00%		5.00%
Consumer Portfolio Segment [Member]
Loans	[4]	$ 18,600,926		$ 19,615,511
Percentage of loans	[4]	5.00%		5.00%
Legacy Loans [Member]
Loans		$ 272,580,062	[5]	$ 277,250,109	[5]	$ 229,776,396
Net deferred loan origination fees and costs	[5]	(204,650)		(212,746)
Loan premium (discount)	[5]	1,844,408		1,922,428
Net loans	[5]	274,219,820		278,959,791
Legacy Loans [Member] | Real Estate Loans [Member]
Loans	[5]	203,921,602		206,141,595
Legacy Loans [Member] | Real Estate Loans [Member] | One to four family, Residential [Member]
Loans	[1],[5]	84,252,950		85,248,184
Legacy Loans [Member] | Real Estate Loans [Member] | One to four family, Residential construction [Member]
Loans	[5]	5,636,504		5,450,827
Legacy Loans [Member] | Real Estate Loans [Member] | One to four family, Investor [Member]
Loans	[2],[5]	8,822,670		9,275,031
Legacy Loans [Member] | Real Estate Loans [Member] | Commercial [Member]
Loans		102,659,016	[5]	100,403,769	[5]	92,628,423
Legacy Loans [Member] | Real Estate Loans [Member] | Commercial Construction [Member]
Loans		2,550,462	[5]	5,763,784	[5]	2,326,457
Legacy Loans [Member] | Commercial Portfolio Segment [Member]
Loans		37,061,370	[3],[5]	38,302,739	[3],[5]	35,339,083
Legacy Loans [Member] | Home Equity Loans [Member]
Loans		13,735,464	[5]	13,956,327	[5]	14,116,647
Legacy Loans [Member] | Consumer Portfolio Segment [Member]
Loans		17,861,626	[4],[5]	18,849,448	[4],[5]	2,135,569
Acquired Loans [Member]
Loans		107,181,131		111,971,130		123,955,508
Net deferred loan origination fees and costs
Loan premium (discount)		(356,912)		(510,036)
Net loans		106,824,219		111,461,094
Acquired Loans [Member] | Real Estate Loans [Member]
Loans		99,060,753		103,324,379
Acquired Loans [Member] | Real Estate Loans [Member] | One to four family, Residential [Member]
Loans	[1]	70,509,208		72,749,066
Acquired Loans [Member] | Real Estate Loans [Member] | One to four family, Residential construction [Member]
Loans
Acquired Loans [Member] | Real Estate Loans [Member] | One to four family, Investor [Member]
Loans	[2]	17,210,983		17,460,809
Acquired Loans [Member] | Real Estate Loans [Member] | Commercial [Member]
Loans		10,486,192		11,762,485		14,399,402
Acquired Loans [Member] | Real Estate Loans [Member] | Commercial Construction [Member]
Loans		854,370		1,352,019		1,191,507
Acquired Loans [Member] | Commercial Portfolio Segment [Member]
Loans		1,905,770	[3]	1,841,226	[3]	2,037,264
Acquired Loans [Member] | Home Equity Loans [Member]
Loans		5,475,308		6,039,462		6,668,685
Acquired Loans [Member] | Consumer Portfolio Segment [Member]
Loans		$ 739,301		$ 766,063	[4]	$ 928,700
[1]	"Legacy" one-to four-family residential real estate loans at March 31, 2018 includes $19.2 million of various loan pools purchased in the second half of fiscal 2018.
[2]	"Investor" loans are residential mortgage loans secured by non-owner occupied one-to four-family properties.
[3]	"Legacy" commercial business loans at March 31, 2018 includes a $15.5 million pool of commercial lease loans purchased in June 2017 and $3.2 million in guaranteed SBA loans purchased in second half of fiscal 2018.
[4]	"Legacy" consumer loans at March 31, 2018 includes $19.9 million of purchased loan pools consisting of recreational vehicles that were purchased in August and December 2017.
[5]	As a result of the acquisition of Fraternity Community Bancorp, Inc., the parent company of Fraternity Federal Savings and Loan, in May 2016 and Fairmount Bancorp, Inc., the parent company of Fairmount Bank, in September 2015, we have segmented the portfolio into two components, loans originated by Hamilton Bank "Legacy" and loans acquired from Fraternity Community Bancorp, Inc. and Fairmount Bancorp, Inc. "Acquired".

Note 5 - Loans Receivable and40

Note 5 - Loans Receivable and Allowance for Loan Losses - Activity in Allowance for Loan Losses (Details) - USD ($)		3 Months Ended
		Jun. 30, 2018		Jun. 30, 2017	Mar. 31, 2018
Beginning balance		$ 2,821,903		$ 2,194,815
Charge-offs		(47,412)		(4,078)
Recoveries		2,496		6,791
Provision for credit losses		60,000		160,000
Ending balance		2,836,987		2,357,528
Loans		379,761,193			$ 389,221,239
Legacy Loans [Member]
Individually evaluated for impairment		261,902		278,573
Collectively evaluated for impairment		2,575,085		2,078,955
Individually evaluated for impairment		10,234,745		4,051,915
Collectively evaluated for impairment		262,345,317		225,724,481
Loans		272,580,062	[1]	229,776,396	277,250,109	[1]
Acquired Loans [Member]
Individually evaluated for impairment
Collectively evaluated for impairment
Individually evaluated for impairment		1,581,226		1,633,444
Collectively evaluated for impairment		105,599,905		122,322,064
Loans		107,181,131		123,955,508	111,971,130
Real Estate Loans [Member]
Loans		302,982,355			309,465,974
Real Estate Loans [Member] | Legacy Loans [Member]
Loans	[1]	203,921,602			206,141,595
Real Estate Loans [Member] | Acquired Loans [Member]
Loans		99,060,753			103,324,379
Real Estate Loans [Member] | Residential [Member]
Beginning balance		608,723		553,539
Charge-offs		(8,047)
Recoveries		767
Provision for credit losses		(232)		(8,982)
Ending balance		601,211		544,557
Real Estate Loans [Member] | Residential [Member] | Legacy Loans [Member]
Individually evaluated for impairment		261,902		278,573
Collectively evaluated for impairment		339,309		265,984
Individually evaluated for impairment		1,784,758		1,762,599
Collectively evaluated for impairment		88,104,696		73,656,157
Loans		89,889,454		75,418,756
Real Estate Loans [Member] | Residential [Member] | Acquired Loans [Member]
Individually evaluated for impairment
Collectively evaluated for impairment
Individually evaluated for impairment		892,087		1,177,729
Collectively evaluated for impairment		69,617,121		79,118,824
Loans		70,509,208		80,296,553
Real Estate Loans [Member] | Investor Loans [Member]
Beginning balance		51,690		35,275
Charge-offs		(5,580)		(4,078)
Recoveries		65		5,307
Provision for credit losses		17,331		27,967
Ending balance		63,506		64,471
Real Estate Loans [Member] | Investor Loans [Member] | Legacy Loans [Member]
Individually evaluated for impairment
Collectively evaluated for impairment		63,506		64,471
Individually evaluated for impairment		58,599		7,772
Collectively evaluated for impairment		8,764,071		7,803,689
Loans		8,822,670		7,811,461
Real Estate Loans [Member] | Investor Loans [Member] | Acquired Loans [Member]
Individually evaluated for impairment
Collectively evaluated for impairment
Individually evaluated for impairment		433,174		183,728
Collectively evaluated for impairment		16,777,808		18,249,669
Loans		17,210,982		18,433,397
Real Estate Loans [Member] | Commercial [Member]
Beginning balance		1,253,383		1,375,894
Charge-offs		(31,320)
Recoveries
Provision for credit losses		133,823		(63,736)
Ending balance		1,355,886		1,312,158
Loans		113,145,208			112,166,254
Real Estate Loans [Member] | Commercial [Member] | Legacy Loans [Member]
Individually evaluated for impairment
Collectively evaluated for impairment		1,355,886		1,312,158
Individually evaluated for impairment		7,505,365		1,546,811
Collectively evaluated for impairment		95,153,651		91,081,612
Loans		102,659,016	[1]	92,628,423	100,403,769	[1]
Real Estate Loans [Member] | Commercial [Member] | Acquired Loans [Member]
Individually evaluated for impairment
Collectively evaluated for impairment
Individually evaluated for impairment		197,259		203,215
Collectively evaluated for impairment		10,288,933		14,196,187
Loans		10,486,192		14,399,402	11,762,485
Real Estate Loans [Member] | Commercial Construction [Member]
Beginning balance		33,430		9,031
Charge-offs
Recoveries
Provision for credit losses		(18,637)		17,956
Ending balance		14,793		26,987
Loans		3,404,832			7,115,803
Real Estate Loans [Member] | Commercial Construction [Member] | Legacy Loans [Member]
Individually evaluated for impairment
Collectively evaluated for impairment		14,793		26,987
Individually evaluated for impairment
Collectively evaluated for impairment		2,550,462		2,326,457
Loans		2,550,462	[1]	2,326,457	5,763,784	[1]
Real Estate Loans [Member] | Commercial Construction [Member] | Acquired Loans [Member]
Individually evaluated for impairment
Collectively evaluated for impairment
Individually evaluated for impairment
Collectively evaluated for impairment		854,370		1,191,507
Loans		854,370		1,191,507	1,352,019
Commercial Portfolio Segment [Member]
Beginning balance		673,982		149,461
Charge-offs
Recoveries				175
Provision for credit losses		(64,610)		193,458
Ending balance		609,372		343,094
Loans	[2]	38,967,140			40,143,965
Commercial Portfolio Segment [Member] | Legacy Loans [Member]
Individually evaluated for impairment
Collectively evaluated for impairment		609,372		343,094
Individually evaluated for impairment		858,762		723,753
Collectively evaluated for impairment		36,202,608		34,615,330
Loans		37,061,370	[1],[2]	35,339,083	38,302,739	[1],[2]
Commercial Portfolio Segment [Member] | Acquired Loans [Member]
Individually evaluated for impairment
Collectively evaluated for impairment
Individually evaluated for impairment
Collectively evaluated for impairment		1,905,770		2,037,264
Loans		1,905,770	[2]	2,037,264	1,841,226	[2]
Home Equity Loans [Member]
Beginning balance		69,459		70,071
Charge-offs
Recoveries
Provision for credit losses		(1,192)		(5,410)
Ending balance		68,267		64,661
Loans		19,210,772			19,995,789
Home Equity Loans [Member] | Legacy Loans [Member]
Individually evaluated for impairment
Collectively evaluated for impairment		68,267		64,661
Individually evaluated for impairment		7,408		10,980
Collectively evaluated for impairment		13,728,056		14,105,667
Loans		13,735,464	[1]	14,116,647	13,956,327	[1]
Home Equity Loans [Member] | Acquired Loans [Member]
Individually evaluated for impairment
Collectively evaluated for impairment
Individually evaluated for impairment
Collectively evaluated for impairment		5,475,308		6,668,685
Loans		5,475,308		6,668,685	6,039,462
Consumer Portfolio Segment [Member]
Beginning balance		131,236		1,544
Charge-offs		(2,465)
Recoveries		1,664		1,309
Provision for credit losses		(6,483)		(1,253)
Ending balance		123,952		1,600
Loans	[3]	18,600,926			19,615,511
Consumer Portfolio Segment [Member] | Legacy Loans [Member]
Individually evaluated for impairment
Collectively evaluated for impairment		123,952		1,600
Individually evaluated for impairment		19,853
Collectively evaluated for impairment		17,841,773		2,135,569
Loans		17,861,626	[1],[3]	2,135,569	18,849,448	[1],[3]
Consumer Portfolio Segment [Member] | Acquired Loans [Member]
Individually evaluated for impairment
Collectively evaluated for impairment
Individually evaluated for impairment		58,706		68,772
Collectively evaluated for impairment		680,595		859,928
Loans		$ 739,301		$ 928,700	$ 766,063	[3]
[1]	As a result of the acquisition of Fraternity Community Bancorp, Inc., the parent company of Fraternity Federal Savings and Loan, in May 2016 and Fairmount Bancorp, Inc., the parent company of Fairmount Bank, in September 2015, we have segmented the portfolio into two components, loans originated by Hamilton Bank "Legacy" and loans acquired from Fraternity Community Bancorp, Inc. and Fairmount Bancorp, Inc. "Acquired".
[2]	"Legacy" commercial business loans at March 31, 2018 includes a $15.5 million pool of commercial lease loans purchased in June 2017 and $3.2 million in guaranteed SBA loans purchased in second half of fiscal 2018.
[3]	"Legacy" consumer loans at March 31, 2018 includes $19.9 million of purchased loan pools consisting of recreational vehicles that were purchased in August and December 2017.

Note 5 - Loans Receivable and41

Note 5 - Loans Receivable and Allowance for Loan Losses - Past Due Loans (Details) - USD ($)		Jun. 30, 2018		Mar. 31, 2018		Jun. 30, 2017
Current		$ 369,328,138		$ 380,780,116
Past due		1,484,181		2,476,716
Nonaccrual loans		8,948,874		5,964,407
Loans		379,761,193		389,221,239
Nonaccrual interest not accrued		204,462		393,818
Financing Receivables, 30 to 59 Days Past Due [Member]
Past due		228,467		1,037,360
Financing Receivables, 60 to 89 Days Past Due [Member]
Past due		26,172		233,115
Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Past due		1,229,542		1,206,241
Real Estate Loans [Member]
Loans		302,982,355		309,465,974
Real Estate Loans [Member] | Residential [Member]
Nonaccrual loans		830,649		864,644
Nonaccrual interest not accrued		6,556		61,370
Real Estate Loans [Member] | Residential [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Past due		157,728		752,982
Real Estate Loans [Member] | Residential [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Past due		26,172		70,291
Real Estate Loans [Member] | Residential [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Past due
Real Estate Loans [Member] | Investor Loans [Member]
Nonaccrual loans		352,999		361,821
Nonaccrual interest not accrued		5,107		24,117
Real Estate Loans [Member] | Investor Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Past due
Real Estate Loans [Member] | Investor Loans [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Past due
Real Estate Loans [Member] | Investor Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Past due		1,032,283		1,206,241
Real Estate Loans [Member] | Commercial [Member]
Nonaccrual loans		7,505,364		4,555,202
Loans		113,145,208		112,166,254
Nonaccrual interest not accrued		184,891		294,619
Real Estate Loans [Member] | Commercial [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Past due
Real Estate Loans [Member] | Commercial [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Past due
Real Estate Loans [Member] | Commercial [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Past due		197,259
Real Estate Loans [Member] | Commercial Construction [Member]
Nonaccrual loans
Loans		3,404,832		7,115,803
Nonaccrual interest not accrued
Real Estate Loans [Member] | Commercial Construction [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Past due
Real Estate Loans [Member] | Commercial Construction [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Past due
Real Estate Loans [Member] | Commercial Construction [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Past due
Commercial Portfolio Segment [Member]
Nonaccrual loans		240,009		165,285
Loans	[1]	38,967,140		40,143,965
Nonaccrual interest not accrued		7,462		12,891
Commercial Portfolio Segment [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Past due		14,573		135,502
Commercial Portfolio Segment [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Past due				134,524
Commercial Portfolio Segment [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Past due
Home Equity Loans [Member]
Nonaccrual loans				12,605
Loans		19,210,772		19,995,789
Nonaccrual interest not accrued				436
Home Equity Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Past due
Home Equity Loans [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Past due
Home Equity Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Past due
Consumer Portfolio Segment [Member]
Nonaccrual loans		19,853		4,850
Loans	[2]	18,600,926		19,615,511
Nonaccrual interest not accrued		446		385
Consumer Portfolio Segment [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Past due		56,166		148,876
Consumer Portfolio Segment [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Past due				28,300
Consumer Portfolio Segment [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Past due
Legacy Loans [Member]
Current		263,581,744		270,807,643
Past due		658,882		1,315,929
Nonaccrual loans		8,339,436		5,126,537
Loans		272,580,062	[3]	277,250,109	[3]	$ 229,776,396
Nonaccrual interest not accrued		196,016		325,094
Legacy Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Past due		117,467		347,996
Legacy Loans [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Past due		26,172		233,115
Legacy Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Past due		515,243		734,818
Legacy Loans [Member] | Real Estate Loans [Member]
Loans	[3]	203,921,602		206,141,595
Legacy Loans [Member] | Real Estate Loans [Member] | Residential [Member]
Nonaccrual loans		515,611		526,584
Loans		89,889,454				75,418,756
Nonaccrual interest not accrued		2,248		8,250
Legacy Loans [Member] | Real Estate Loans [Member] | Residential [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Past due		74,733		63,618
Legacy Loans [Member] | Real Estate Loans [Member] | Residential [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Past due		26,172		70,291
Legacy Loans [Member] | Real Estate Loans [Member] | Residential [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Past due
Legacy Loans [Member] | Real Estate Loans [Member] | Investor Loans [Member]
Nonaccrual loans		58,599		60,949
Loans		8,822,670				7,811,461
Nonaccrual interest not accrued		969		8,513
Legacy Loans [Member] | Real Estate Loans [Member] | Investor Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Past due
Legacy Loans [Member] | Real Estate Loans [Member] | Investor Loans [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Past due
Legacy Loans [Member] | Real Estate Loans [Member] | Investor Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Past due		515,243		734,818
Legacy Loans [Member] | Real Estate Loans [Member] | Commercial [Member]
Nonaccrual loans		7,505,364		4,356,264
Loans		102,659,016	[3]	100,403,769	[3]	92,628,423
Nonaccrual interest not accrued		184,891		294,619
Legacy Loans [Member] | Real Estate Loans [Member] | Commercial [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Past due
Legacy Loans [Member] | Real Estate Loans [Member] | Commercial [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Past due
Legacy Loans [Member] | Real Estate Loans [Member] | Commercial [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Past due
Legacy Loans [Member] | Real Estate Loans [Member] | Commercial Construction [Member]
Nonaccrual loans
Loans		2,550,462	[3]	5,763,784	[3]	2,326,457
Nonaccrual interest not accrued
Legacy Loans [Member] | Real Estate Loans [Member] | Commercial Construction [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Past due
Legacy Loans [Member] | Real Estate Loans [Member] | Commercial Construction [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Past due
Legacy Loans [Member] | Real Estate Loans [Member] | Commercial Construction [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Past due
Legacy Loans [Member] | Commercial Portfolio Segment [Member]
Nonaccrual loans		240,009		165,285
Loans		37,061,370	[1],[3]	38,302,739	[1],[3]	35,339,083
Nonaccrual interest not accrued		7,462		12,891
Legacy Loans [Member] | Commercial Portfolio Segment [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Past due		14,573		135,502
Legacy Loans [Member] | Commercial Portfolio Segment [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Past due				134,524
Legacy Loans [Member] | Commercial Portfolio Segment [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Past due
Legacy Loans [Member] | Home Equity Loans [Member]
Nonaccrual loans				12,605
Loans		13,735,464	[3]	13,956,327	[3]	14,116,647
Nonaccrual interest not accrued				436
Legacy Loans [Member] | Home Equity Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Past due
Legacy Loans [Member] | Home Equity Loans [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Past due
Legacy Loans [Member] | Home Equity Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Past due
Legacy Loans [Member] | Consumer Portfolio Segment [Member]
Nonaccrual loans		19,853		4,850
Loans		17,861,626	[2],[3]	18,849,448	[2],[3]	2,135,569
Nonaccrual interest not accrued		446		385
Legacy Loans [Member] | Consumer Portfolio Segment [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Past due		28,161		148,876
Legacy Loans [Member] | Consumer Portfolio Segment [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Past due				28,300
Legacy Loans [Member] | Consumer Portfolio Segment [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Past due
Acquired Loans [Member]
Current		105,746,394		109,972,473
Past due		825,299		1,160,787
Nonaccrual loans		609,438		837,870
Loans		107,181,131		111,971,130		123,955,508
Nonaccrual interest not accrued		8,446		68,724
Acquired Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Past due		111,000		689,364
Acquired Loans [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Past due
Acquired Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Past due		714,299		471,423
Acquired Loans [Member] | Real Estate Loans [Member]
Loans		99,060,753		103,324,379
Acquired Loans [Member] | Real Estate Loans [Member] | Residential [Member]
Nonaccrual loans		315,038		338,060
Loans		70,509,208				80,296,553
Nonaccrual interest not accrued		4,308		53,120
Acquired Loans [Member] | Real Estate Loans [Member] | Residential [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Past due		82,995		689,364
Acquired Loans [Member] | Real Estate Loans [Member] | Residential [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Past due
Acquired Loans [Member] | Real Estate Loans [Member] | Residential [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Past due
Acquired Loans [Member] | Real Estate Loans [Member] | Investor Loans [Member]
Nonaccrual loans		294,400		300,872
Loans		17,210,982				18,433,397
Nonaccrual interest not accrued		4,138		15,604
Acquired Loans [Member] | Real Estate Loans [Member] | Investor Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Past due
Acquired Loans [Member] | Real Estate Loans [Member] | Investor Loans [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Past due
Acquired Loans [Member] | Real Estate Loans [Member] | Investor Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Past due		517,040		471,423
Acquired Loans [Member] | Real Estate Loans [Member] | Commercial [Member]
Nonaccrual loans				198,938
Loans		10,486,192		11,762,485		14,399,402
Nonaccrual interest not accrued
Acquired Loans [Member] | Real Estate Loans [Member] | Commercial [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Past due
Acquired Loans [Member] | Real Estate Loans [Member] | Commercial [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Past due
Acquired Loans [Member] | Real Estate Loans [Member] | Commercial [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Past due		197,259
Acquired Loans [Member] | Real Estate Loans [Member] | Commercial Construction [Member]
Nonaccrual loans
Loans		854,370		1,352,019		1,191,507
Nonaccrual interest not accrued
Acquired Loans [Member] | Real Estate Loans [Member] | Commercial Construction [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Past due
Acquired Loans [Member] | Real Estate Loans [Member] | Commercial Construction [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Past due
Acquired Loans [Member] | Real Estate Loans [Member] | Commercial Construction [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Past due
Acquired Loans [Member] | Commercial Portfolio Segment [Member]
Nonaccrual loans
Loans		1,905,770	[1]	1,841,226	[1]	2,037,264
Nonaccrual interest not accrued
Acquired Loans [Member] | Commercial Portfolio Segment [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Past due
Acquired Loans [Member] | Commercial Portfolio Segment [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Past due
Acquired Loans [Member] | Commercial Portfolio Segment [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Past due
Acquired Loans [Member] | Home Equity Loans [Member]
Nonaccrual loans
Loans		5,475,308		6,039,462		6,668,685
Nonaccrual interest not accrued
Acquired Loans [Member] | Home Equity Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Past due
Acquired Loans [Member] | Home Equity Loans [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Past due
Acquired Loans [Member] | Home Equity Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Past due
Acquired Loans [Member] | Consumer Portfolio Segment [Member]
Nonaccrual loans
Loans		739,301		766,063	[2]	$ 928,700
Nonaccrual interest not accrued
Acquired Loans [Member] | Consumer Portfolio Segment [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Past due		28,005
Acquired Loans [Member] | Consumer Portfolio Segment [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Past due
Acquired Loans [Member] | Consumer Portfolio Segment [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Past due
[1]	"Legacy" commercial business loans at March 31, 2018 includes a $15.5 million pool of commercial lease loans purchased in June 2017 and $3.2 million in guaranteed SBA loans purchased in second half of fiscal 2018.
[2]	"Legacy" consumer loans at March 31, 2018 includes $19.9 million of purchased loan pools consisting of recreational vehicles that were purchased in August and December 2017.
[3]	As a result of the acquisition of Fraternity Community Bancorp, Inc., the parent company of Fraternity Federal Savings and Loan, in May 2016 and Fairmount Bancorp, Inc., the parent company of Fairmount Bank, in September 2015, we have segmented the portfolio into two components, loans originated by Hamilton Bank "Legacy" and loans acquired from Fraternity Community Bancorp, Inc. and Fairmount Bancorp, Inc. "Acquired".

Note 5 - Loans Receivable and42

Note 5 - Loans Receivable and Allowance for Loan Losses - Impaired Loans (Details) - USD ($)		3 Months Ended		12 Months Ended
		Jun. 30, 2018	Jun. 30, 2017	Mar. 31, 2018
Related allowance	[1]	$ 261,902	$ 278,573	$ 266,256
Unpaid contractual principal balance	[1]	15,512,837	8,691,375	12,423,053
Recorded investment	[1]	11,815,971	5,685,359	8,720,339
Total recorded investment	[1]	10,315,578	5,706,053	9,644,505
Interest income recognized	[1]	112,772	56,784	250,008
Legacy Loans [Member]
Related allowance		261,902	278,573	266,256
Unpaid contractual principal balance		13,324,377	6,582,015	10,273,127
Recorded investment		10,234,745	4,051,915	7,094,524
Total recorded investment		8,683,689	4,077,935	7,774,125
Interest income recognized		88,732	38,334	171,476
Legacy Loans [Member] | Real Estate Loans [Member] | Residential [Member]
Unpaid contractual principal balance, with no related allowance recorded		630,805	581,380	665,051
Recorded investment with no related allowance recorded		484,375	449,473	517,600
Total recorded investment, with no related allowance recorded		490,726	453,305	548,636
Interest income recognized, with no related allowance recorded		10,492	288	9,257
Unpaid contractual principal balance, with an allowance recorded		1,327,589	1,340,394	1,336,078
Recorded investment with an allowance recorded		1,300,383	1,313,126	1,309,440
Related allowance		261,902	278,573	266,256
Total recorded investment, with an allowance recorded		1,312,130	1,317,495	1,328,919
Interest income recognized, with an allowance recorded		13,834	12,802	51,928
Legacy Loans [Member] | Real Estate Loans [Member] | Investor Loans [Member]
Unpaid contractual principal balance, with no related allowance recorded		124,696	50,947	126,389
Recorded investment with no related allowance recorded		58,599	7,772	60,949
Total recorded investment, with no related allowance recorded		59,355	7,847	118,175
Interest income recognized, with no related allowance recorded		1,312		3,772
Unpaid contractual principal balance, with an allowance recorded
Recorded investment with an allowance recorded
Related allowance
Total recorded investment, with an allowance recorded
Interest income recognized, with an allowance recorded
Legacy Loans [Member] | Real Estate Loans [Member] | Commercial [Member]
Unpaid contractual principal balance, with no related allowance recorded		9,565,282	3,433,621	6,487,088
Recorded investment with no related allowance recorded		7,505,365	1,546,811	4,356,264
Total recorded investment, with no related allowance recorded		5,957,014	1,546,812	4,634,504
Interest income recognized, with no related allowance recorded		53,278		1,077
Unpaid contractual principal balance, with an allowance recorded
Recorded investment with an allowance recorded
Related allowance
Total recorded investment, with an allowance recorded
Interest income recognized, with an allowance recorded
Legacy Loans [Member] | Real Estate Loans [Member] | Commercial Construction [Member]
Unpaid contractual principal balance, with no related allowance recorded
Recorded investment with no related allowance recorded
Total recorded investment, with no related allowance recorded
Interest income recognized, with no related allowance recorded
Unpaid contractual principal balance, with an allowance recorded
Recorded investment with an allowance recorded
Related allowance
Total recorded investment, with an allowance recorded
Interest income recognized, with an allowance recorded
Legacy Loans [Member] | Commercial Portfolio Segment [Member]
Unpaid contractual principal balance, with no related allowance recorded		1,619,151	1,138,939	1,562,756
Recorded investment with no related allowance recorded		858,762	723,753	795,410
Total recorded investment, with no related allowance recorded		827,871	740,966	1,082,773
Interest income recognized, with no related allowance recorded		8,863	25,151	103,474
Unpaid contractual principal balance, with an allowance recorded
Recorded investment with an allowance recorded
Related allowance
Total recorded investment, with an allowance recorded
Interest income recognized, with an allowance recorded
Legacy Loans [Member] | Home Equity Loans [Member]
Unpaid contractual principal balance, with no related allowance recorded		34,472	36,734	47,650
Recorded investment with no related allowance recorded		7,408	10,980	20,595
Total recorded investment, with no related allowance recorded		17,016	11,510	22,604
Interest income recognized, with no related allowance recorded		953	93	392
Unpaid contractual principal balance, with an allowance recorded
Recorded investment with an allowance recorded
Related allowance
Total recorded investment, with an allowance recorded
Interest income recognized, with an allowance recorded
Legacy Loans [Member] | Consumer Portfolio Segment [Member]
Unpaid contractual principal balance, with no related allowance recorded		22,382		48,115
Recorded investment with no related allowance recorded		19,853		34,266
Total recorded investment, with no related allowance recorded		19,577		38,514
Interest income recognized, with no related allowance recorded				1,576
Unpaid contractual principal balance, with an allowance recorded
Recorded investment with an allowance recorded
Related allowance
Total recorded investment, with an allowance recorded
Interest income recognized, with an allowance recorded
Acquired Loans [Member]
Related allowance	[1]
Unpaid contractual principal balance	[1]	2,188,460	2,109,360	2,149,926
Recorded investment	[1]	1,581,226	1,633,444	1,625,815
Total recorded investment	[1]	1,631,889	1,628,118	1,870,380
Interest income recognized	[1]	24,040	18,450	78,532
Acquired Loans [Member] | Real Estate Loans [Member] | Residential [Member]
Unpaid contractual principal balance, with no related allowance recorded	[1]	1,052,825	1,370,261	1,082,484
Recorded investment with no related allowance recorded	[1]	892,087	1,177,729	922,252
Total recorded investment, with no related allowance recorded	[1]	936,819	1,184,445	945,602
Interest income recognized, with no related allowance recorded	[1]	10,156	11,221	26,437
Unpaid contractual principal balance, with an allowance recorded	[1]
Recorded investment with an allowance recorded	[1]
Related allowance	[1]
Total recorded investment, with an allowance recorded	[1]
Interest income recognized, with an allowance recorded	[1]
Acquired Loans [Member] | Real Estate Loans [Member] | Investor Loans [Member]
Unpaid contractual principal balance, with no related allowance recorded	[1]	755,381	333,362	682,045
Recorded investment with no related allowance recorded	[1]	433,174	183,728	444,254
Total recorded investment, with no related allowance recorded	[1]	437,401	168,815	659,246
Interest income recognized, with no related allowance recorded	[1]	9,184	3,102	37,368
Unpaid contractual principal balance, with an allowance recorded	[1]
Recorded investment with an allowance recorded	[1]
Related allowance	[1]
Total recorded investment, with an allowance recorded	[1]
Interest income recognized, with an allowance recorded	[1]
Acquired Loans [Member] | Real Estate Loans [Member] | Commercial [Member]
Unpaid contractual principal balance, with no related allowance recorded	[1]	247,259	253,215	248,938
Recorded investment with no related allowance recorded	[1]	197,259	203,215	198,938
Total recorded investment, with no related allowance recorded	[1]	198,098	203,870	201,519
Interest income recognized, with no related allowance recorded	[1]	1,863	1,912	7,336
Unpaid contractual principal balance, with an allowance recorded	[1]
Recorded investment with an allowance recorded	[1]
Related allowance	[1]
Total recorded investment, with an allowance recorded	[1]
Interest income recognized, with an allowance recorded	[1]
Acquired Loans [Member] | Real Estate Loans [Member] | Commercial Construction [Member]
Unpaid contractual principal balance, with no related allowance recorded	[1]
Recorded investment with no related allowance recorded	[1]
Total recorded investment, with no related allowance recorded	[1]
Interest income recognized, with no related allowance recorded	[1]
Unpaid contractual principal balance, with an allowance recorded	[1]
Recorded investment with an allowance recorded	[1]
Related allowance	[1]
Total recorded investment, with an allowance recorded	[1]
Interest income recognized, with an allowance recorded	[1]
Acquired Loans [Member] | Commercial Portfolio Segment [Member]
Unpaid contractual principal balance, with no related allowance recorded	[1]
Recorded investment with no related allowance recorded	[1]
Total recorded investment, with no related allowance recorded	[1]
Interest income recognized, with no related allowance recorded	[1]
Unpaid contractual principal balance, with an allowance recorded	[1]
Recorded investment with an allowance recorded	[1]
Related allowance	[1]
Total recorded investment, with an allowance recorded	[1]
Interest income recognized, with an allowance recorded	[1]
Acquired Loans [Member] | Home Equity Loans [Member]
Unpaid contractual principal balance, with no related allowance recorded	[1]	39,418	44,852	40,473
Recorded investment with no related allowance recorded	[1]
Total recorded investment, with no related allowance recorded	[1]
Interest income recognized, with no related allowance recorded	[1]	419	288	1,329
Unpaid contractual principal balance, with an allowance recorded	[1]
Recorded investment with an allowance recorded	[1]
Related allowance	[1]
Total recorded investment, with an allowance recorded	[1]
Interest income recognized, with an allowance recorded	[1]
Acquired Loans [Member] | Consumer Portfolio Segment [Member]
Unpaid contractual principal balance, with no related allowance recorded	[1]	93,577	107,670	95,986
Recorded investment with no related allowance recorded	[1]	58,706	68,772	60,371
Total recorded investment, with no related allowance recorded	[1]	59,571	70,988	64,013
Interest income recognized, with no related allowance recorded	[1]	2,418	1,927	6,062
Unpaid contractual principal balance, with an allowance recorded	[1]
Recorded investment with an allowance recorded	[1]
Related allowance	[1]
Total recorded investment, with an allowance recorded	[1]
Interest income recognized, with an allowance recorded	[1]
[1]	Generally accepted accounting principles require that we record acquired loans at fair value at acquisition, which includes a discount for loans with credit impairment. These purchased credit impaired loans are not performing according to their contractual terms and meet the definition of an impaired loan. Although we do not accrue interest income at the contractual rate on these loans, we do recognize an accretable yield as interest income to the extent such yield is supported by cash flow analysis of the underlying loans.

Note 5 - Loans Receivable and43

Note 5 - Loans Receivable and Allowance for Loan Losses - Purchased Credit Impaired (PCI) Loans (Details) - USD ($)	3 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Recorded investment at beginning of period	$ 1,021,424	$ 1,341,935
Accretion	1,526	(360)
Reductions for payments	(21,493)	(46,664)
Recorded investment at end of period	1,001,457	1,294,911
Oustanding principal balance at end of period	$ 1,247,145	$ 1,630,658

Note 5 - Loans Receivable and44

Note 5 - Loans Receivable and Allowance for Loan Losses - Changes In the Accretable Yield for PCI Loans (Details) - USD ($)	3 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Accretable yield, beginning of period	$ 31,895	$ 59,639
Accretion	(1,526)	360
Reclassification from nonaccretable difference
Accretable yield, end of period	$ 30,369	$ 59,999

Note 5 - Loans Receivable and45

Note 5 - Loans Receivable and Allowance for Loan Losses - Summary of Troubled Debt Restructurings (Details)	Jun. 30, 2018USD ($)	Mar. 31, 2018USD ($)
Number of contracts	19	18
Troubled debt restructurings	$ 3,348,812	$ 3,344,039
Performing Financial Instruments [Member]
Troubled debt restructurings	1,847,156	1,835,654
Nonperforming Financial Instruments [Member]
Troubled debt restructurings	$ 1,501,656	$ 1,508,385
Real Estate Loans [Member] | Residential [Member]
Number of contracts	16	15
Troubled debt restructurings	$ 1,549,210	$ 1,543,130
Real Estate Loans [Member] | Residential [Member] | Performing Financial Instruments [Member]
Troubled debt restructurings	1,242,975	1,230,166
Real Estate Loans [Member] | Residential [Member] | Nonperforming Financial Instruments [Member]
Troubled debt restructurings	$ 306,235	$ 312,964
Real Estate Loans [Member] | Investor Loans [Member]
Number of contracts	0	0
Troubled debt restructurings	$ 0	$ 0
Real Estate Loans [Member] | Investor Loans [Member] | Performing Financial Instruments [Member]
Troubled debt restructurings	0	0
Real Estate Loans [Member] | Investor Loans [Member] | Nonperforming Financial Instruments [Member]
Troubled debt restructurings	$ 0	$ 0
Real Estate Loans [Member] | Commercial [Member]
Number of contracts	2	2
Troubled debt restructurings	$ 1,195,421	$ 1,195,421
Real Estate Loans [Member] | Commercial [Member] | Performing Financial Instruments [Member]
Troubled debt restructurings	0	0
Real Estate Loans [Member] | Commercial [Member] | Nonperforming Financial Instruments [Member]
Troubled debt restructurings	$ 1,195,421	$ 1,195,421
Real Estate Loans [Member] | Commercial Construction [Member]
Number of contracts	0	0
Troubled debt restructurings	$ 0	$ 0
Real Estate Loans [Member] | Commercial Construction [Member] | Performing Financial Instruments [Member]
Troubled debt restructurings	0	0
Real Estate Loans [Member] | Commercial Construction [Member] | Nonperforming Financial Instruments [Member]
Troubled debt restructurings	$ 0	$ 0
Commercial Portfolio Segment [Member]
Number of contracts	1	1
Troubled debt restructurings	$ 604,181	$ 605,488
Commercial Portfolio Segment [Member] | Performing Financial Instruments [Member]
Troubled debt restructurings	604,181	605,488
Commercial Portfolio Segment [Member] | Nonperforming Financial Instruments [Member]
Troubled debt restructurings	$ 0	$ 0
Home Equity Loans [Member]
Number of contracts	0	0
Troubled debt restructurings	$ 0	$ 0
Home Equity Loans [Member] | Performing Financial Instruments [Member]
Troubled debt restructurings	0	0
Home Equity Loans [Member] | Nonperforming Financial Instruments [Member]
Troubled debt restructurings	$ 0	$ 0
Consumer Portfolio Segment [Member]
Number of contracts	0	0
Troubled debt restructurings	$ 0	$ 0
Consumer Portfolio Segment [Member] | Performing Financial Instruments [Member]
Troubled debt restructurings	0	0
Consumer Portfolio Segment [Member] | Nonperforming Financial Instruments [Member]
Troubled debt restructurings	$ 0	$ 0

Note 5 - Loans Receivable and46

Note 5 - Loans Receivable and Allowance for Loan Losses - Number of Contracts and Outstanding Loan Balance at Time of Modification (Details) - Real Estate Loans [Member] - Residential [Member]	3 Months Ended
	Jun. 30, 2018USD ($)	Jun. 30, 2017USD ($)
Number of contracts	1	1
Outstanding recorded investment	$ 20,866	$ 1,931

Note 5 - Loans Receivable and47

Note 5 - Loans Receivable and Allowance for Loan Losses - Loans by Risk Grade (Details) - USD ($)		Jun. 30, 2018		Mar. 31, 2018		Jun. 30, 2017
Loans		$ 379,761,193		$ 389,221,239
Legacy Loans [Member]
Loans		272,580,062	[1]	277,250,109	[1]	$ 229,776,396
Acquired Loans [Member]
Loans		107,181,131		111,971,130		123,955,508
Pass [Member]
Loans		366,129,694		375,484,442
Pass [Member] | Legacy Loans [Member]
Loans		261,936,828		266,444,555
Pass [Member] | Acquired Loans [Member]
Loans		104,192,866		109,039,887
Special Mention [Member]
Loans		3,806,182		7,022,190
Special Mention [Member] | Legacy Loans [Member]
Loans		2,370,659		5,688,785
Special Mention [Member] | Acquired Loans [Member]
Loans		1,435,523		1,333,405
Substandard [Member]
Loans		9,825,317		6,714,607
Substandard [Member] | Legacy Loans [Member]
Loans		8,272,575		5,116,769
Substandard [Member] | Acquired Loans [Member]
Loans		1,552,742		1,597,838
Doubtful [Member]
Loans
Doubtful [Member] | Legacy Loans [Member]
Loans
Doubtful [Member] | Acquired Loans [Member]
Loans
Unlikely to be Collected Financing Receivable [Member]
Loans
Unlikely to be Collected Financing Receivable [Member] | Legacy Loans [Member]
Loans
Unlikely to be Collected Financing Receivable [Member] | Acquired Loans [Member]
Loans
Real Estate Loans [Member]
Loans		302,982,355		309,465,974
Real Estate Loans [Member] | Legacy Loans [Member]
Loans	[1]	203,921,602		206,141,595
Real Estate Loans [Member] | Acquired Loans [Member]
Loans		99,060,753		103,324,379
Real Estate Loans [Member] | Residential [Member] | Legacy Loans [Member]
Loans		89,889,454				75,418,756
Real Estate Loans [Member] | Residential [Member] | Acquired Loans [Member]
Loans		70,509,208				80,296,553
Real Estate Loans [Member] | Residential [Member] | Pass [Member]
Loans		155,672,737		158,765,098
Real Estate Loans [Member] | Residential [Member] | Pass [Member] | Legacy Loans [Member]
Loans		87,092,026		87,863,805
Real Estate Loans [Member] | Residential [Member] | Pass [Member] | Acquired Loans [Member]
Loans		68,580,711		70,901,293
Real Estate Loans [Member] | Residential [Member] | Special Mention [Member]
Loans		3,407,069		3,291,173
Real Estate Loans [Member] | Residential [Member] | Special Mention [Member] | Legacy Loans [Member]
Loans		2,370,659		2,365,652
Real Estate Loans [Member] | Residential [Member] | Special Mention [Member] | Acquired Loans [Member]
Loans		1,036,410		925,521
Real Estate Loans [Member] | Residential [Member] | Substandard [Member]
Loans		1,318,856		1,391,806
Real Estate Loans [Member] | Residential [Member] | Substandard [Member] | Legacy Loans [Member]
Loans		426,769		469,554
Real Estate Loans [Member] | Residential [Member] | Substandard [Member] | Acquired Loans [Member]
Loans		892,087		922,252
Real Estate Loans [Member] | Investor Loans [Member] | Legacy Loans [Member]
Loans		8,822,670				7,811,461
Real Estate Loans [Member] | Investor Loans [Member] | Acquired Loans [Member]
Loans		17,210,982				18,433,397
Real Estate Loans [Member] | Investor Loans [Member] | Pass [Member]
Loans		25,251,728		25,933,428
Real Estate Loans [Member] | Investor Loans [Member] | Pass [Member] | Legacy Loans [Member]
Loans		8,764,071		9,214,082
Real Estate Loans [Member] | Investor Loans [Member] | Pass [Member] | Acquired Loans [Member]
Loans		16,487,657		16,719,346
Real Estate Loans [Member] | Investor Loans [Member] | Special Mention [Member]
Loans		291,458		297,209
Real Estate Loans [Member] | Investor Loans [Member] | Special Mention [Member] | Legacy Loans [Member]
Loans
Real Estate Loans [Member] | Investor Loans [Member] | Special Mention [Member] | Acquired Loans [Member]
Loans		291,458		297,209
Real Estate Loans [Member] | Investor Loans [Member] | Substandard [Member]
Loans		490,467		505,203
Real Estate Loans [Member] | Investor Loans [Member] | Substandard [Member] | Legacy Loans [Member]
Loans		58,599		60,949
Real Estate Loans [Member] | Investor Loans [Member] | Substandard [Member] | Acquired Loans [Member]
Loans		431,868		444,254
Real Estate Loans [Member] | Commercial [Member]
Loans		113,145,208		112,166,254
Real Estate Loans [Member] | Commercial [Member] | Legacy Loans [Member]
Loans		102,659,016	[1]	100,403,769	[1]	92,628,423
Real Estate Loans [Member] | Commercial [Member] | Acquired Loans [Member]
Loans		10,486,192		11,762,485		14,399,402
Real Estate Loans [Member] | Commercial [Member] | Pass [Member]
Loans		105,442,584		104,518,917
Real Estate Loans [Member] | Commercial [Member] | Pass [Member] | Legacy Loans [Member]
Loans		95,153,651		92,955,370
Real Estate Loans [Member] | Commercial [Member] | Pass [Member] | Acquired Loans [Member]
Loans		10,288,933		11,563,547
Real Estate Loans [Member] | Commercial [Member] | Special Mention [Member]
Loans				3,092,135
Real Estate Loans [Member] | Commercial [Member] | Special Mention [Member] | Legacy Loans [Member]
Loans				3,092,135
Real Estate Loans [Member] | Commercial [Member] | Special Mention [Member] | Acquired Loans [Member]
Loans
Real Estate Loans [Member] | Commercial [Member] | Substandard [Member]
Loans		7,702,624		4,555,202
Real Estate Loans [Member] | Commercial [Member] | Substandard [Member] | Legacy Loans [Member]
Loans		7,505,365		4,356,264
Real Estate Loans [Member] | Commercial [Member] | Substandard [Member] | Acquired Loans [Member]
Loans		197,259		198,938
Real Estate Loans [Member] | Commercial Construction [Member]
Loans		3,404,832		7,115,803
Real Estate Loans [Member] | Commercial Construction [Member] | Legacy Loans [Member]
Loans		2,550,462	[1]	5,763,784	[1]	2,326,457
Real Estate Loans [Member] | Commercial Construction [Member] | Acquired Loans [Member]
Loans		854,370		1,352,019		1,191,507
Real Estate Loans [Member] | Commercial Construction [Member] | Pass [Member]
Loans		3,404,832		7,115,803
Real Estate Loans [Member] | Commercial Construction [Member] | Pass [Member] | Legacy Loans [Member]
Loans		2,550,462		5,763,784
Real Estate Loans [Member] | Commercial Construction [Member] | Pass [Member] | Acquired Loans [Member]
Loans		854,370		1,352,019
Real Estate Loans [Member] | Commercial Construction [Member] | Special Mention [Member]
Loans
Real Estate Loans [Member] | Commercial Construction [Member] | Special Mention [Member] | Legacy Loans [Member]
Loans
Real Estate Loans [Member] | Commercial Construction [Member] | Special Mention [Member] | Acquired Loans [Member]
Loans
Real Estate Loans [Member] | Commercial Construction [Member] | Substandard [Member]
Loans
Real Estate Loans [Member] | Commercial Construction [Member] | Substandard [Member] | Legacy Loans [Member]
Loans
Real Estate Loans [Member] | Commercial Construction [Member] | Substandard [Member] | Acquired Loans [Member]
Loans
Commercial Portfolio Segment [Member]
Loans	[2]	38,967,140		40,143,965
Commercial Portfolio Segment [Member] | Legacy Loans [Member]
Loans		37,061,370	[1],[2]	38,302,739	[1],[2]	35,339,083
Commercial Portfolio Segment [Member] | Acquired Loans [Member]
Loans		1,905,770	[2]	1,841,226	[2]	2,037,264
Commercial Portfolio Segment [Member] | Pass [Member]
Loans		38,712,559		39,819,519
Commercial Portfolio Segment [Member] | Pass [Member] | Legacy Loans [Member]
Loans		36,806,789		37,978,293
Commercial Portfolio Segment [Member] | Pass [Member] | Acquired Loans [Member]
Loans		1,905,770		1,841,226
Commercial Portfolio Segment [Member] | Special Mention [Member]
Loans				134,524
Commercial Portfolio Segment [Member] | Special Mention [Member] | Legacy Loans [Member]
Loans				134,524
Commercial Portfolio Segment [Member] | Special Mention [Member] | Acquired Loans [Member]
Loans
Commercial Portfolio Segment [Member] | Substandard [Member]
Loans		254,581		189,922
Commercial Portfolio Segment [Member] | Substandard [Member] | Legacy Loans [Member]
Loans		254,581		189,922
Commercial Portfolio Segment [Member] | Substandard [Member] | Acquired Loans [Member]
Loans
Home Equity Loans [Member]
Loans		19,210,772		19,995,789
Home Equity Loans [Member] | Legacy Loans [Member]
Loans		13,735,464	[1]	13,956,327	[1]	14,116,647
Home Equity Loans [Member] | Acquired Loans [Member]
Loans		5,475,308		6,039,462		6,668,685
Home Equity Loans [Member] | Pass [Member]
Loans		19,095,709		19,864,519
Home Equity Loans [Member] | Pass [Member] | Legacy Loans [Member]
Loans		13,728,056		13,935,732
Home Equity Loans [Member] | Pass [Member] | Acquired Loans [Member]
Loans		5,367,653		5,928,787
Home Equity Loans [Member] | Special Mention [Member]
Loans		107,655		110,675
Home Equity Loans [Member] | Special Mention [Member] | Legacy Loans [Member]
Loans
Home Equity Loans [Member] | Special Mention [Member] | Acquired Loans [Member]
Loans		107,655		110,675
Home Equity Loans [Member] | Substandard [Member]
Loans		7,408		20,595
Home Equity Loans [Member] | Substandard [Member] | Legacy Loans [Member]
Loans		7,408		20,595
Home Equity Loans [Member] | Substandard [Member] | Acquired Loans [Member]
Loans
Consumer Portfolio Segment [Member]
Loans	[3]	18,600,926		19,615,511
Consumer Portfolio Segment [Member] | Legacy Loans [Member]
Loans		17,861,626	[1],[3]	18,849,448	[1],[3]	2,135,569
Consumer Portfolio Segment [Member] | Acquired Loans [Member]
Loans		739,301		766,063	[3]	$ 928,700
Consumer Portfolio Segment [Member] | Pass [Member]
Loans		18,549,545		19,467,158
Consumer Portfolio Segment [Member] | Pass [Member] | Legacy Loans [Member]
Loans		17,841,773		18,733,489
Consumer Portfolio Segment [Member] | Pass [Member] | Acquired Loans [Member]
Loans		707,772		733,669
Consumer Portfolio Segment [Member] | Special Mention [Member]
Loans				96,474
Consumer Portfolio Segment [Member] | Special Mention [Member] | Legacy Loans [Member]
Loans				96,474
Consumer Portfolio Segment [Member] | Special Mention [Member] | Acquired Loans [Member]
Loans
Consumer Portfolio Segment [Member] | Substandard [Member]
Loans		51,381		51,879
Consumer Portfolio Segment [Member] | Substandard [Member] | Legacy Loans [Member]
Loans		19,853		19,485
Consumer Portfolio Segment [Member] | Substandard [Member] | Acquired Loans [Member]
Loans		$ 31,528		$ 32,394
[1]	As a result of the acquisition of Fraternity Community Bancorp, Inc., the parent company of Fraternity Federal Savings and Loan, in May 2016 and Fairmount Bancorp, Inc., the parent company of Fairmount Bank, in September 2015, we have segmented the portfolio into two components, loans originated by Hamilton Bank "Legacy" and loans acquired from Fraternity Community Bancorp, Inc. and Fairmount Bancorp, Inc. "Acquired".
[2]	"Legacy" commercial business loans at March 31, 2018 includes a $15.5 million pool of commercial lease loans purchased in June 2017 and $3.2 million in guaranteed SBA loans purchased in second half of fiscal 2018.
[3]	"Legacy" consumer loans at March 31, 2018 includes $19.9 million of purchased loan pools consisting of recreational vehicles that were purchased in August and December 2017.

Note 5 - Loans Receivable and48

Note 5 - Loans Receivable and Allowance for Loan Losses - Outstanding Commitments and Unused Lines of Credit (Details) - USD ($)	Jun. 30, 2018	Mar. 31, 2018
Unused Commercial Lines of Credit [Member]
Outstanding commitments and unused lines of credit	$ 11,325,807	$ 9,187,810
Unused Home Equity Lines of Credit [Member]
Outstanding commitments and unused lines of credit	24,296,445	22,560,376
Unused Consumer Lines of Credit [Member]
Outstanding commitments and unused lines of credit	185,417	29,331
Residential Construction Loan Commitments [Member]
Outstanding commitments and unused lines of credit	5,600,272	4,234,076
Commercial Construction Loan Commitments [Member]
Outstanding commitments and unused lines of credit	8,147,129	8,968,416
Home Equity Loan Commitments [Member]
Outstanding commitments and unused lines of credit	696,000	389,600
Commercial loan commitments [Member]
Outstanding commitments and unused lines of credit	4,490,151	5,125,000
Standby Letters of Credit [Member]
Outstanding commitments and unused lines of credit	$ 415,607	$ 250,224

Note 6 - Goodwill and Other I49

Note 6 - Goodwill and Other Intangible Asset (Details Textual) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Mar. 31, 2018
Business Acquisition, Goodwill, Expected Tax Deductible Amount	$ 2,700
Goodwill, Impairment Loss			$ 0
Core Deposits [Member]
Finite-Lived Intangible Asset, Useful Life	8 years

Note 6 - Goodwill and Other I50

Note 6 - Goodwill and Other Intangible Assets - Activity in Goodwill and Intangible Assets (Details) - USD ($)	3 Months Ended		12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Mar. 31, 2018
Goodwill, balance	$ 8,563,530	$ 8,563,530	$ 8,563,530
Goodwill, Amortization			0
Core deposit intangible, Amortization	(31,516)	(31,516)
Goodwill, balance	8,563,530	8,563,530	8,563,530
Core deposit intangible, balance	581,718
Core Deposits [Member]
Core deposit intangible, balance	613,234	739,298	739,298
Core deposit intangible, Amortization	(31,516)	(31,516)
Core deposit intangible, balance	$ 581,718	$ 707,782	$ 613,234

Note 6 - Goodwill and Other I51

Note 6 - Goodwill and Other Intangible Assets - Future Expected Annual Amortization Associated With Core Deposit Intangible (Details)	Jun. 30, 2018USD ($)
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months	$ 94,554
2,020	123,737
2,021	98,070
2,022	98,070
2,023	98,070
2,024	64,174
2,025	5,043
Total core deposit intangible	$ 581,718

Note 7 - Derivative - Interes52

Note 7 - Derivative - Interest Rate Swap Agreement (Details Textual) - USD ($)	3 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Sep. 30, 2015	Mar. 31, 2018
Derivative, Notional Amount	$ 11,550,000
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months	94,554
Interest Rate Swap [Member]
Unrealized Gain (Loss) on Cash Flow Hedging Instruments	0	$ 0
Interest Rate Swap [Member] | Cash Flow Hedging [Member]
Derivative Liability, Fair Value of Collateral	754,000			$ 751,000
Derivative Instruments, Gain (Loss) Recognized in Income, Ineffective Portion and Amount Excluded from Effectiveness Testing, Net, Total	(381)
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months	2,738
Interest Rate Swap [Member] | Cash Flow Hedging [Member] | Federal Home Loan Bank Advances [Member]
Derivative, Notional Amount	11,600,000
Derivative Instruments, Gain (Loss) Recognized in Income, Ineffective Portion and Amount Excluded from Effectiveness Testing, Net, Total	381
Interest Rate Swap [Member] | Fair Value Hedging [Member]
Derivative, Notional Amount	$ 3,100,000		$ 3,300,000
Derivative, Fixed Interest Rate			3.99%
Derivative, Term of Contract			10 years

Note 7 - Derivative - Interes53

Note 7 - Derivative - Interest Rate Swap Agreement - Information on Interest Rate Swaps (Details)	3 Months Ended
	Jun. 30, 2018USD ($)
Notional amounts	$ 11,550,000
FHLB Advance Swap 1 [Member]
Notional amounts	$ 1,850,000
Effective Start Date	Mar. 9, 2017
Maturity Date	Mar. 9, 2022
Pay Fixed Rate	2.24%
Receive Floating Rate	3-Month LIBOR
FHLB Advance Swap 2 [Member]
Notional amounts	$ 1,850,000
Effective Start Date	Mar. 9, 2017
Maturity Date	Mar. 9, 2024
Pay Fixed Rate	2.41%
Receive Floating Rate	3-Month LIBOR
FHLB Advance Swap 3 [Member]
Notional amounts	$ 1,850,000
Effective Start Date	Mar. 9, 2017
Maturity Date	Mar. 9, 2027
Pay Fixed Rate	2.57%
Receive Floating Rate	3-Month LIBOR
FHLB Advance Swap 4 [Member]
Notional amounts	$ 2,000,000
Effective Start Date	Mar. 29, 2017
Maturity Date	Mar. 29, 2022
Pay Fixed Rate	2.08%
Receive Floating Rate	3-Month LIBOR
FHLB Advance Swap 5 [Member]
Notional amounts	$ 2,000,000
Effective Start Date	Mar. 29, 2017
Maturity Date	Mar. 29, 2024
Pay Fixed Rate	2.24%
Receive Floating Rate	3-Month LIBOR
FHLB Advance Swap 6 [Member]
Notional amounts	$ 2,000,000
Effective Start Date	Mar. 29, 2017
Maturity Date	Mar. 29, 2027
Pay Fixed Rate	2.40%
Receive Floating Rate	3-Month LIBOR

Note 7 - Derivative - Interes54

Note 7 - Derivative - Interest Rate Swap Agreement - Cash Flow Hedges (Details) - Interest Rate Swap [Member] - USD ($)	Jun. 30, 2018	Mar. 31, 2018
Derivative notional amount	$ 11,550,000	$ 11,550,000
Loans - Commercial real estate loan	$ 315,884	$ 217,464

Note 7 - Derivative - Interes55

Note 7 - Derivative - Interest Rate Swap Agreement - Cash Flow Derivative Gains (Loss) Recorded In AOCI and the Statement of Income (Details) - USD ($)	3 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Unrealized gain on derivative transactions, net of tax effect	$ 98,039	$ (43,500)
Interest Rate Swap [Member] | Cash Flow Hedging [Member]
Unrealized gain on derivative transactions, net of tax effect	98,039	(126,314)
Amount of gain (loss) reclassified from OCI to Interest Income
Amount of gain (loss) recognized in Other Noninterest Income (ineffective portion)	$ (381)

Note 7 - Derivative - Interes56

Note 7 - Derivative - Interest Rate Swap Agreement - Fair Value Hedge (Details) - USD ($)	Jun. 30, 2018	Mar. 31, 2018
Commercial real estate loan, principal amount	$ 378,207,052	$ 387,598,982
Interest Rate Swap [Member]
Derivative notional amount	11,550,000	11,550,000
Loans and Leases [Member] | Offsetting Commercial Real Estate Loan by Interest Rate Swap [Member]
Derivative notional amount
Commercial real estate loan, principal amount	3,070,825	3,091,892
Commercial real estate loan, fair value	2,973,514	3,022,744
Other Assets [Member] | Interest Rate Swap [Member]
Derivative notional amount	3,070,825	3,091,892
Commercial real estate loan, fair value	$ 97,311	$ 69,148

Note 8 - Deposits - Composition

Note 8 - Deposits - Composition of Deposits and Related Percentage Mix (Details) - USD ($)	Jun. 30, 2018	Mar. 31, 2018
Savings, amount	$ 40,965,710	$ 42,499,381
Savings, percentage	10.10%	10.60%
Noninterest-bearing checking, amount	$ 27,485,033	$ 29,557,943
Noninterest-bearing checking, percentage	6.80%	7.30%
Interest-bearing checking, amount	$ 29,482,021	$ 27,219,286
Interest-bearing checking, percentage	7.30%	6.70%
Money market accounts, amount	$ 66,235,735	$ 58,466,228
Money market accounts, percentage	16.40%	14.40%
Time deposits, amount	$ 239,974,615	$ 246,988,613
Time deposits, percentage	59.40%	61.00%
Gross deposits, amount	$ 404,143,114	$ 404,731,451
Gross deposits, percentage	100.00%	100.00%
Premium on deposits asssumed	$ 330,947	$ 411,524
Total deposits	$ 404,474,061	$ 405,142,975

Note 9 - Lines of Credit and 58

Note 9 - Lines of Credit and Federal Home Loan Bank Advances (Details Textual) - USD ($)	3 Months Ended
	Jun. 30, 2018	Mar. 31, 2018
Federal Home Loan Bank Advances Total Funding Available As A Percent Of Total Assets		25.00%
Federal Home Loan Bank, Advances, General Debt Obligations, Maximum Amount Available	$ 72,000,000	$ 68,300,000
Loans Pledged as Collateral	116,700,000	122,600,000
Derivative, Notional Amount	11,550,000
Secured Debt [Member]
Line of Credit Facility, Maximum Borrowing Capacity	5,000,000
Long-term Line of Credit, Total	0	0
Unsecured Debt [Member]
Line of Credit Facility, Maximum Borrowing Capacity	1,000,000
Long-term Line of Credit, Total	0	$ 0
Federal Home Loan Bank Advances [Member] | Individual Cash Flow Hedge Tied to FHLB, 3 [Member] | Borrowing One [Member]
Derivative, Notional Amount	$ 1,850,000
Derivative, Term of Contract	10 years
Federal Home Loan Bank Advances [Member] | Individual Cash Flow Hedge Tied to FHLB, 3 [Member] | Borrowing Two [Member]
Derivative, Term of Contract	10 years
Federal Home Loan Bank Advances [Member] | Individual Cash Flow Hedge Tied to FHLB, 2 [Member] | Borrowing One [Member]
Derivative, Term of Contract	7 years
Federal Home Loan Bank Advances [Member] | Individual Cash Flow Hedge Tied to FHLB, 2 [Member] | Borrowing Two [Member]
Derivative, Term of Contract	7 years
Federal Home Loan Bank Advances [Member] | Individual Cash Flow Hedge Tied to FHLB, 1 [Member] | Borrowing One [Member]
Derivative, Term of Contract	5 years
Federal Home Loan Bank Advances [Member] | Individual Cash Flow Hedge Tied to FHLB, 1 [Member] | Borrowing Two [Member]
Derivative, Notional Amount	$ 2,000,000
Derivative, Term of Contract	5 years

Note 9 - Lines of Credit and 59

Note 9 - Lines of Credit and Federal Home Loan Bank Advances - Federal Home Loan Bank Advances (Details) - USD ($)		3 Months Ended	12 Months Ended
		Jun. 30, 2018	Mar. 31, 2018
Amount		$ 59,550,000	$ 60,550,000
Premium on FHLB advances assumed		49,093	122,140
Total borrowings		59,599,093	60,672,140
Borrowing One [Member] | Federal Home Loan Bank Advances [Member]
Amount	[1]	$ 5,550,000	$ 5,550,000
Rate	[1]	2.08%	1.84%
Maturity Date	[1]	Sep. 10, 2018	Jun. 11, 2018
Borrowing Two [Member] | Federal Home Loan Bank Advances [Member]
Amount	[2]	$ 6,000,000	$ 6,000,000
Rate	[2]	2.07%	1.90%
Maturity Date	[2]	Oct. 1, 2018	Jun. 29, 2018
Borrowing Three [Member] | Federal Home Loan Bank Advances [Member]
Amount		$ 1,000,000	$ 1,000,000
Rate		2.60%	2.60%
Maturity Date		Jul. 2, 2018	Jul. 2, 2018
Borrowing Four [Member] | Federal Home Loan Bank Advances [Member]
Amount		$ 1,000,000	$ 1,000,000
Rate		3.05%	3.05%
Maturity Date		Jul. 3, 2018	Jul. 3, 2018
Borrowing Five [Member] | Federal Home Loan Bank Advances [Member]
Amount		$ 5,000,000	$ 5,000,000
Rate		3.94%	3.94%
Maturity Date		Jul. 23, 2018	Jul. 23, 2018
Borrowing Six [Member] | Federal Home Loan Bank Advances [Member]
Amount		$ 1,000,000	$ 1,000,000
Rate		1.74%	1.74%
Maturity Date		Jul. 31, 2018	Jul. 31, 2018
Borrowing Seven [Member] | Federal Home Loan Bank Advances [Member]
Amount		$ 1,000,000	$ 1,000,000
Rate		1.40%	1.40%
Maturity Date		Aug. 21, 2018	Aug. 21, 2018
Borrowing Eight [Member] | Federal Home Loan Bank Advances [Member]
Amount		$ 4,000,000	$ 4,000,000
Rate		1.94%	1.94%
Maturity Date		Aug. 27, 2018	Aug. 27, 2018
Borrowing Nine [Member] | Federal Home Loan Bank Advances [Member]
Amount		$ 3,000,000	$ 3,000,000
Rate		1.41%	1.41%
Maturity Date		Aug. 27, 2018	Aug. 27, 2018
Borrowing Ten [Member] | Federal Home Loan Bank Advances [Member]
Amount		$ 5,000,000	$ 5,000,000
Rate		3.38%	3.38%
Maturity Date		Sep. 19, 2018	Sep. 19, 2018
Borrowing Eleven [Member] | Federal Home Loan Bank Advances [Member]
Amount			$ 1,000,000
Rate			2.60%
Maturity Date			Oct. 2, 2018
Borrowing Twelve [Member] | Federal Home Loan Bank Advances [Member]
Amount		$ 1,000,000	$ 1,000,000
Rate		1.95%	1.95%
Maturity Date		Dec. 31, 2018	Dec. 31, 2018
Borrowing Thirteen [Member] | Federal Home Loan Bank Advances [Member]
Amount		$ 3,000,000	$ 3,000,000
Rate		1.38%	1.38%
Maturity Date		Jul. 31, 2019	Jul. 31, 2019
Borrowing Fourteen [Member] | Federal Home Loan Bank Advances [Member]
Amount		$ 3,000,000	$ 3,000,000
Rate		1.96%	1.96%
Maturity Date		Aug. 26, 2019	Aug. 26, 2019
Borrowing Fifteen [Member] | Federal Home Loan Bank Advances [Member]
Amount		$ 3,000,000	$ 3,000,000
Rate		1.59%	1.59%
Maturity Date		Aug. 26, 2019	Aug. 26, 2019
Borrowing Sixteen [Member] | Federal Home Loan Bank Advances [Member]
Amount		$ 3,000,000	$ 3,000,000
Rate		1.42%	1.42%
Maturity Date		Aug. 26, 2019	Aug. 26, 2019
Borrowing Seventeen [Member] | Federal Home Loan Bank Advances [Member]
Amount		$ 1,500,000	$ 1,500,000
Rate		1.95%	1.95%
Maturity Date		Nov. 25, 2019	Nov. 25, 2019
Borrowing Eighteen [Member] | Federal Home Loan Bank Advances [Member]
Amount		$ 1,500,000	$ 1,500,000
Rate		1.78%	1.78%
Maturity Date		Nov. 27, 2019	Nov. 27, 2019
Borrowing Nineteen [Member] | Federal Home Loan Bank Advances [Member]
Amount		$ 3,000,000	$ 3,000,000
Rate		2.31%	2.31%
Maturity Date		Feb. 3, 2020	Feb. 3, 2020
Borrowing Twenty [Member] | Federal Home Loan Bank Advances [Member]
Amount		$ 1,000,000	$ 1,000,000
Rate		2.15%	2.15%
Maturity Date		Nov. 30, 2020	Nov. 30, 2020
Borrowing Twenty One [Member] | Federal Home Loan Bank Advances [Member]
Amount		$ 2,000,000	$ 2,000,000
Rate		2.28%	2.28%
Maturity Date		Dec. 28, 2020	Dec. 28, 2020
Borrowing Twenty Two [Member] | Federal Home Loan Bank Advances [Member]
Amount		$ 2,000,000	$ 2,000,000
Rate		2.49%	2.49%
Maturity Date		Feb. 1, 2021	Feb. 1, 2021
Borrowing Twenty Three [Member] | Federal Home Loan Bank Advances [Member]
Amount		$ 3,000,000	$ 3,000,000
Rate		1.48%	1.48%
Maturity Date		Aug. 25, 2021	Aug. 25, 2021
[1]	FHLB Advance is tied to three derivative cash flow hedges in increments of $1.85 million each. The three individual cash flow hedges are for a term of five, seven and ten years, respectively and are tied to the 3-month LIBOR rate. In order for the cash flow hedges to remain effective, the corresponding FHLB Advance will have to be renewed every three months until the respective cash flow hedge matures.
[2]	FHLB Advance is tied to three derivative cash flow hedges in increments of $2.0 million each. The three individual cash flow hedges are for a term of five, seven and ten years, respectively and are tied to the 3-month LIBOR rate. In order for the cash flow hedges to remain effective, the corresponding FHLB Advance will have to be renewed every three months until the respective cash flow hedge matures.

Note 10 - Regulatory Capital 60

Note 10 - Regulatory Capital Ratios (Details Textual)		3 Months Ended
		Jun. 30, 2018	Jan. 01, 2019	Mar. 31, 2018
Common Equity Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets	[1]	6.50%		6.50%
Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets	[1]	8.00%		8.00%
Capital Required to be Well Capitalized to Risk Weighted Assets	[1]	10.00%		10.00%
Tier One Leverage Capital Required to be Well Capitalized to Average Assets	[1]	5.00%		5.00%
Capital Conservation Buffer Level R Ratio		0.625%
Capital Conservation Buffer Phase In Period		4 years
Scenario, Forecast [Member]
Capital Conservation Buffer Level R Ratio			2.50%
[1]	Under prompt corrective action

Note 10 - Regulatory Capital 61

Note 10 - Regulatory Capital Ratios - Capital Ratios and Minimum Capital Requirements of Bank (Details) - USD ($) $ in Thousands		Jun. 30, 2018	Mar. 31, 2018
Common equity tier 1 capital (to risk-weighted assets)		$ 48,320	$ 47,308
Common equity tier 1 capital (to risk-weighted assets)		13.24%	12.79%
Common equity tier 1 capital (to risk-weighted assets)	[1]	$ 24,044	$ 24,044
Common Equity Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets	[1]	6.50%	6.50%
Total risk-based capital (to risk-weighted assets)		$ 51,208	$ 50,180
Total risk-based capital (to risk-weighted assets)		14.03%	13.57%
Total risk-based capital (to risk-weighted assets)	[1]	$ 36,992	$ 36,992
Capital Required to be Well Capitalized to Risk Weighted Assets	[1]	10.00%	10.00%
Tier 1 capital (to risk-weighted assets)		$ 48,320	$ 47,308
Tier 1 capital (to risk-weighted assets)		13.24%	12.79%
Tier 1 capital (to risk-weighted assets)	[1]	$ 29,593	$ 29,593
Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets	[1]	8.00%	8.00%
Tier 1 capital (to adjusted total assets)		$ 48,320	$ 47,308
Tier 1 capital (to adjusted total assets)		9.34%	9.15%
Tier 1 capital (to adjusted total assets)	[1]	$ 25,843	$ 25,843
Tier One Leverage Capital Required to be Well Capitalized to Average Assets	[1]	5.00%	5.00%
Minimum Capital Required - Basel III Phase-In Schedule [Member]
Common equity tier 1 capital (to risk-weighted assets)		$ 23,582	$ 23,582
Common equity tier 1 capital (to risk-weighted assets)		6.375%	6.375%
Total risk-based capital (to risk-weighted assets)		$ 36,529	$ 36,529
Total risk-based capital (to risk-weighted assets)		9.875%	9.875%
Tier 1 capital (to risk-weighted assets)		$ 29,131	$ 29,131
Tier 1 capital (to risk-weighted assets)		7.875%	7.875%
Tier 1 capital (to adjusted total assets)		$ 20,674	$ 20,674
Tier 1 capital (to adjusted total assets)		4.00%	4.00%
Minimum Capital Required - Basel III Fully Phased-In [Member]
Common equity tier 1 capital (to risk-weighted assets)		$ 25,894	$ 25,894
Common equity tier 1 capital (to risk-weighted assets)		7.00%	7.00%
Total risk-based capital (to risk-weighted assets)		$ 38,841	$ 38,841
Total risk-based capital (to risk-weighted assets)		10.50%	10.50%
Tier 1 capital (to risk-weighted assets)		$ 31,443	$ 31,443
Tier 1 capital (to risk-weighted assets)		8.50%	8.50%
Tier 1 capital (to adjusted total assets)		$ 20,674	$ 20,674
Tier 1 capital (to adjusted total assets)		4.00%	4.00%
Hamilton Bank [Member]
Common equity tier 1 capital (to risk-weighted assets)		$ 40,150	$ 39,126
Common equity tier 1 capital (to risk-weighted assets)		11.04%	10.61%
Common equity tier 1 capital (to risk-weighted assets)	[1]	$ 23,647	$ 23,959
Common Equity Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets	[1]	6.50%	6.50%
Total risk-based capital (to risk-weighted assets)		$ 43,038	$ 41,998
Total risk-based capital (to risk-weighted assets)		11.83%	11.39%
Total risk-based capital (to risk-weighted assets)	[1]	$ 36,380	$ 36,860
Capital Required to be Well Capitalized to Risk Weighted Assets	[1]	10.00%	10.00%
Tier 1 capital (to risk-weighted assets)		$ 40,150	$ 39,126
Tier 1 capital (to risk-weighted assets)		11.04%	10.61%
Tier 1 capital (to risk-weighted assets)	[1]	$ 29,104	$ 29,488
Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets	[1]	8.00%	8.00%
Tier 1 capital (to adjusted total assets)		$ 40,150	$ 39,126
Tier 1 capital (to adjusted total assets)		7.82%	7.64%
Tier 1 capital (to adjusted total assets)	[1]	$ 25,660	$ 25,621
Tier One Leverage Capital Required to be Well Capitalized to Average Assets	[1]	5.00%	5.00%
Hamilton Bank [Member] | Minimum Capital Required - Basel III Phase-In Schedule [Member]
Common equity tier 1 capital (to risk-weighted assets)		$ 23,193	$ 23,498
Common equity tier 1 capital (to risk-weighted assets)		6.375%	6.375%
Total risk-based capital (to risk-weighted assets)		$ 35,926	$ 36,399
Total risk-based capital (to risk-weighted assets)		9.875%	9.875%
Tier 1 capital (to risk-weighted assets)		$ 28,650	$ 29,027
Tier 1 capital (to risk-weighted assets)		7.875%	7.875%
Tier 1 capital (to adjusted total assets)		$ 20,528	$ 20,497
Tier 1 capital (to adjusted total assets)		4.00%	4.00%
Hamilton Bank [Member] | Minimum Capital Required - Basel III Fully Phased-In [Member]
Common equity tier 1 capital (to risk-weighted assets)		$ 25,466	$ 25,802
Common equity tier 1 capital (to risk-weighted assets)		7.00%	7.00%
Total risk-based capital (to risk-weighted assets)		$ 38,200	$ 38,703
Total risk-based capital (to risk-weighted assets)		10.50%	10.50%
Tier 1 capital (to risk-weighted assets)		$ 30,923	$ 31,331
Tier 1 capital (to risk-weighted assets)		8.50%	8.50%
Tier 1 capital (to adjusted total assets)		$ 20,528	$ 20,497
Tier 1 capital (to adjusted total assets)		4.00%	4.00%
[1]	Under prompt corrective action

Note 11 - Stock Based Compens62

Note 11 - Stock Based Compensation (Details Textual) - USD ($)	3 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Mar. 31, 2018	Mar. 31, 2017	Nov. 30, 2013	Oct. 10, 2012
Share Price						$ 10
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number, Ending Balance	28,241		19,440	36,220
2013 Equity Incentive Plan [Member]
Stock or Unit Option Plan Expense	$ 61,514	$ 57,392
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Total	$ 269,191
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition	2 years 73 days
Share Price	$ 15.70
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value	$ 450,003
Restricted Stock or Unit Expense	$ 64,089	$ 57,819
2013 Equity Incentive Plan [Member] | Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized					148,120
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number, Ending Balance	92,701
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures, Total	268,204
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	5 years
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage	20.00%
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Total	$ 286,770
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition	2 years 36 days
2013 Equity Incentive Plan [Member] | Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized					370,300
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	5 years
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage	20.00%
2013 Equity Incentive Plan [Member] | Employee Stock Option [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period	10 years

Note 11 - Stock Based Compens63

Note 11 - Stock Based Compensation - Fair Value Assumptions (Details) - $ / shares	Apr. 01, 2018	Feb. 03, 2017	Nov. 01, 2016	Feb. 03, 2014	Jun. 30, 2018	Mar. 31, 2018
Number of options granted (in shares)	20,354	3,700	19,000	225,150	20,354
Risk free interest rate	2.67%	2.27%	1.61%	2.07%
Expected term (Year)	7 years	7 years	7 years	7 years
Expected stock price volatility	19.61%	27.26%	27.17%	27.30%
Dividend yield	0.00%	0.00%	0.00%	0.00%
Fair value of options granted (in dollars per share)	$ 4.05	$ 5.18	$ 4.35	$ 4.65

Note 11 - Stock Based Compens64

Note 11 - Stock Based Compensation - Stock Option Activity (Details) - $ / shares	Apr. 01, 2018	Feb. 03, 2017	Nov. 01, 2016	Feb. 03, 2014	Jun. 30, 2018	Mar. 31, 2018	Mar. 31, 2017
Outstanding, beginning of period (in shares)	242,350				242,350	242,350
Outstanding, beginning of period (in dollars per share)	$ 13.84				$ 13.84	$ 13.84
Outstanding, beginning of period (Year)					6 years 36 days	6 years 36 days	7 years 36 days
Granted (in shares)	20,354	3,700	19,000	225,150	20,354
Granted (in dollars per share)					$ 14.25
Granted (Year)					9 years 292 days
Exercised (in shares)
Exercised (in dollars per share)
Exercised (Year)
Forfeited, exchanged or expired (in shares)
Forfeited, exchanged or expired (in dollars per share)
Forfeited, exchanged or expired (Year)
Outstanding, end of period (in shares)					262,704	242,350	242,350
Outstanding, end of period (in dollars per share)					$ 13.87	$ 13.84	$ 13.84
Vested at end of year (in shares)					180,260	180,260
Vested at end of year (in dollars per share)					$ 13.85	$ 13.84
Vested at end of year (Year)					5 years 255 days	5 years 292 days

Note 11 - Stock Based Compens65

Note 11 - Stock Based Compensation - Restricted Stock Activity (Details) - Restricted Stock [Member] - USD ($)	3 Months Ended	12 Months Ended
	Jun. 30, 2018	Mar. 31, 2018
Nonvested (in shares)	19,440	36,220
Nonvested shares (in dollars per share)	$ 13.74	$ 13.76
Granted (in shares)	8,801
Granted (in dollars per share)	$ 14.25
Vested (in shares)		(16,780)
Vested (in dollars per share)		$ 13.78
Forfeited (in shares)
Forfeited (in dollars per share)
Nonvested (in shares)	28,241	19,440
Nonvested shares (in dollars per share)	$ 13.90	$ 13.74
Fair Value of shares vested	$ 1,012,022	$ 918,555

Note 12 - Fair Value Measurem66

Note 12 - Fair Value Measurements (Details Textual) - USD ($)		Jun. 30, 2018	Mar. 31, 2018	Jun. 30, 2017
Impaired Financing Receivable, Recorded Investment, Total	[1]	$ 11,815,971	$ 8,720,339	$ 5,685,359
Real Estate Acquired Through Foreclosure		457,778	457,778
Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member]
Impaired Financing Receivable, Recorded Investment, Total		11,815,971	8,720,339
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment		261,902	266,256
Real Estate Acquired Through Foreclosure		$ 457,778	$ 457,778
[1]	Generally accepted accounting principles require that we record acquired loans at fair value at acquisition, which includes a discount for loans with credit impairment. These purchased credit impaired loans are not performing according to their contractual terms and meet the definition of an impaired loan. Although we do not accrue interest income at the contractual rate on these loans, we do recognize an accretable yield as interest income to the extent such yield is supported by cash flow analysis of the underlying loans.

Note 12 - Fair Value Measurem67

Note 12 - Fair Value Measurements - Securities Available for Sale Measured On a Recurring Basis (Details) - USD ($)	Jun. 30, 2018	Mar. 31, 2018
Investment securities available for sale, at fair value	$ 72,638,697	$ 75,404,136
Fair Value, Measurements, Recurring [Member]
Investment securities available for sale, at fair value	72,638,697	75,404,136
US Government Agencies Debt Securities [Member]
Investment securities available for sale, at fair value	2,715,652	2,718,649
US Government Agencies Debt Securities [Member] | Fair Value, Measurements, Recurring [Member]
Investment securities available for sale, at fair value	2,715,652	2,718,649
US States and Political Subdivisions Debt Securities [Member]
Investment securities available for sale, at fair value	11,632,843	11,705,991
US States and Political Subdivisions Debt Securities [Member] | Fair Value, Measurements, Recurring [Member]
Investment securities available for sale, at fair value	11,632,843	11,705,991
Corporate Debt Securities [Member]
Investment securities available for sale, at fair value	1,983,250	1,954,076
Corporate Debt Securities [Member] | Fair Value, Measurements, Recurring [Member]
Investment securities available for sale, at fair value	1,983,250	1,954,076
Collateralized Mortgage Backed Securities [Member]
Investment securities available for sale, at fair value	56,306,952	59,025,420
Collateralized Mortgage Backed Securities [Member] | Fair Value, Measurements, Recurring [Member]
Investment securities available for sale, at fair value	56,306,952	59,025,420
Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
Investment securities available for sale, at fair value
Fair Value, Inputs, Level 1 [Member] | US Government Agencies Debt Securities [Member] | Fair Value, Measurements, Recurring [Member]
Investment securities available for sale, at fair value
Fair Value, Inputs, Level 1 [Member] | US States and Political Subdivisions Debt Securities [Member] | Fair Value, Measurements, Recurring [Member]
Investment securities available for sale, at fair value
Fair Value, Inputs, Level 1 [Member] | Corporate Debt Securities [Member] | Fair Value, Measurements, Recurring [Member]
Investment securities available for sale, at fair value
Fair Value, Inputs, Level 1 [Member] | Collateralized Mortgage Backed Securities [Member] | Fair Value, Measurements, Recurring [Member]
Investment securities available for sale, at fair value
Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
Investment securities available for sale, at fair value	70,655,447	73,450,044
Fair Value, Inputs, Level 2 [Member] | US Government Agencies Debt Securities [Member] | Fair Value, Measurements, Recurring [Member]
Investment securities available for sale, at fair value	2,715,652	2,718,649
Fair Value, Inputs, Level 2 [Member] | US States and Political Subdivisions Debt Securities [Member] | Fair Value, Measurements, Recurring [Member]
Investment securities available for sale, at fair value	11,632,843	11,705,991
Fair Value, Inputs, Level 2 [Member] | Corporate Debt Securities [Member] | Fair Value, Measurements, Recurring [Member]
Investment securities available for sale, at fair value
Fair Value, Inputs, Level 2 [Member] | Collateralized Mortgage Backed Securities [Member] | Fair Value, Measurements, Recurring [Member]
Investment securities available for sale, at fair value	56,306,952	59,025,404
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member]
Investment securities available for sale, at fair value	1,983,250	1,954,092
Fair Value, Inputs, Level 3 [Member] | US Government Agencies Debt Securities [Member] | Fair Value, Measurements, Recurring [Member]
Investment securities available for sale, at fair value
Fair Value, Inputs, Level 3 [Member] | US States and Political Subdivisions Debt Securities [Member] | Fair Value, Measurements, Recurring [Member]
Investment securities available for sale, at fair value
Fair Value, Inputs, Level 3 [Member] | Corporate Debt Securities [Member] | Fair Value, Measurements, Recurring [Member]
Investment securities available for sale, at fair value	1,983,250	1,954,076
Fair Value, Inputs, Level 3 [Member] | Collateralized Mortgage Backed Securities [Member] | Fair Value, Measurements, Recurring [Member]
Investment securities available for sale, at fair value		$ 16

Note 12 - Fair Value Measurem68

Note 12 - Fair Value Measurements - Derivatives Measured On a Recurring Basis (Details) - USD ($)	Jun. 30, 2018	Mar. 31, 2018
Offsetting Commercial Real Estate Loan by Interest Rate Swap [Member] | Loans and Leases [Member]
Commercial real estate loan, fair value	$ 2,973,514	$ 3,022,744
Offsetting Commercial Real Estate Loan by Interest Rate Swap [Member] | Loans and Leases [Member] | Fair Value, Measurements, Recurring [Member]
Loans - Commercial real estate loan	2,973,514	3,022,744
Interest Rate Swap [Member]
Loans - Commercial real estate loan	315,884	217,464
Interest Rate Swap [Member] | Other Liabilities [Member] | Fair Value, Measurements, Recurring [Member]
Commercial real estate loan, fair value	97,311	69,148
Derivatives - Interest rate swaps designated as cash flow hedge	315,884	217,464
Fair Value, Inputs, Level 1 [Member] | Offsetting Commercial Real Estate Loan by Interest Rate Swap [Member] | Loans and Leases [Member] | Fair Value, Measurements, Recurring [Member]
Loans - Commercial real estate loan
Fair Value, Inputs, Level 1 [Member] | Interest Rate Swap [Member] | Other Liabilities [Member] | Fair Value, Measurements, Recurring [Member]
Commercial real estate loan, fair value
Derivatives - Interest rate swaps designated as cash flow hedge
Fair Value, Inputs, Level 2 [Member] | Offsetting Commercial Real Estate Loan by Interest Rate Swap [Member] | Loans and Leases [Member] | Fair Value, Measurements, Recurring [Member]
Loans - Commercial real estate loan	2,973,514	3,022,744
Fair Value, Inputs, Level 2 [Member] | Interest Rate Swap [Member] | Other Liabilities [Member] | Fair Value, Measurements, Recurring [Member]
Commercial real estate loan, fair value	97,311	69,148
Derivatives - Interest rate swaps designated as cash flow hedge	315,884	217,464
Fair Value, Inputs, Level 3 [Member] | Offsetting Commercial Real Estate Loan by Interest Rate Swap [Member] | Loans and Leases [Member] | Fair Value, Measurements, Recurring [Member]
Loans - Commercial real estate loan
Fair Value, Inputs, Level 3 [Member] | Interest Rate Swap [Member] | Other Liabilities [Member] | Fair Value, Measurements, Recurring [Member]
Commercial real estate loan, fair value
Derivatives - Interest rate swaps designated as cash flow hedge

Note 12 - Fair Value Measurem69

Note 12 - Fair Value Measurements - Valuation and Unobservable Inputs for Level 3 Assets (Details)	Jun. 30, 2018USD ($)	Mar. 31, 2018USD ($)
Fair Value, Measurements, Nonrecurring [Member]
Impaired Loans, Net of Allowance, Fair Value Disclosure, Nonrecurring	$ 11,554,069	$ 8,454,083
Foreclosed Real Estate, Fair Value Disclosure, Nonrecurring	457,778	457,778
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Nonrecurring [Member]
Impaired Loans, Net of Allowance, Fair Value Disclosure, Nonrecurring	11,554,069	8,454,083
Foreclosed Real Estate, Fair Value Disclosure, Nonrecurring	457,778	$ 457,778
Fair Value, Inputs, Level 3 [Member] | Valuation, Market Approach [Member] | Fair Value, Measurements, Recurring [Member]
Investment securities, fair value	$ 1,983,250
Fair Value, Inputs, Level 3 [Member] | Valuation, Market Approach [Member] | Fair Value, Measurements, Recurring [Member] | Minimum [Member] | Measurement Input, Discount Rate [Member]
Investment securities, discount rate	0
Impaired loans, net of allowance, discount rate	0
Fair Value, Inputs, Level 3 [Member] | Valuation, Market Approach [Member] | Fair Value, Measurements, Recurring [Member] | Maximum [Member] | Measurement Input, Discount Rate [Member]
Investment securities, discount rate	0.1
Impaired loans, net of allowance, discount rate	0.25
Fair Value, Inputs, Level 3 [Member] | Valuation, Market Approach [Member] | Fair Value, Measurements, Nonrecurring [Member]
Impaired Loans, Net of Allowance, Fair Value Disclosure, Nonrecurring	$ 11,554,069
Foreclosed Real Estate, Fair Value Disclosure, Nonrecurring	$ 457,778
Fair Value, Inputs, Level 3 [Member] | Valuation, Market Approach [Member] | Fair Value, Measurements, Nonrecurring [Member] | Minimum [Member] | Measurement Input, Discount Rate [Member]
Foreclosed real estate, discount rate	0
Fair Value, Inputs, Level 3 [Member] | Valuation, Market Approach [Member] | Fair Value, Measurements, Nonrecurring [Member] | Maximum [Member] | Measurement Input, Discount Rate [Member]
Foreclosed real estate, discount rate	0.25
Fair Value, Inputs, Level 3 [Member] | Valuation Technique, Discounted Cash Flow [Member] | Fair Value, Measurements, Nonrecurring [Member] | Minimum [Member] | Measurement Input, Discount Rate [Member]
Impaired loans, net of allowance, discount rate	0.0263
Fair Value, Inputs, Level 3 [Member] | Valuation Technique, Discounted Cash Flow [Member] | Fair Value, Measurements, Nonrecurring [Member] | Maximum [Member] | Measurement Input, Discount Rate [Member]
Impaired loans, net of allowance, discount rate	0.0725

Note 12 - Fair Value Measurem70

Note 12 - Fair Value Measurements - Reconciliation of Investments at Fair Value on Recurring Basis (Details) - USD ($)	3 Months Ended	12 Months Ended
	Jun. 30, 2018	Mar. 31, 2018
Balance, beginning of year	$ 1,954,092	$ 1,930,786
Change in valuation	29,174
Balance, end of year	1,983,250	1,954,092
Corporate Bond Securities [Member]
Transfers in		1,954,076
Transfers out
Collateralized Mortgage Backed Securities [Member]
Transfers in		16
Transfers out	16	2,473
Municipal Bonds [Member]
Transfers in
Transfers out		$ 1,928,313

Note 12 - Fair Value Measurem71

Note 12 - Fair Value Measurements - Measurements On Nonrecurring Basis (Details) - Fair Value, Measurements, Nonrecurring [Member] - USD ($)	Jun. 30, 2018	Mar. 31, 2018
Impaired loans	$ 11,554,069	$ 8,454,083
Foreclosed real estate	457,778	457,778
Fair Value, Inputs, Level 1 [Member]
Impaired loans
Foreclosed real estate
Fair Value, Inputs, Level 2 [Member]
Impaired loans
Foreclosed real estate
Fair Value, Inputs, Level 3 [Member]
Impaired loans	11,554,069	8,454,083
Foreclosed real estate	$ 457,778	$ 457,778

Note 12 - Fair Value Measurem72

Note 12 - Fair Value Measurements - Reconciliation of Foreclosed Real Estate, Measured On Nonrecurring Basis Using Significant Unobservable Inputs (Details) - USD ($)	3 Months Ended		12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Mar. 31, 2018
Transfer to foreclosed real estate		$ 17,305
Fair Value, Inputs, Level 3 [Member]
Balance at beginning of period	457,778	$ 503,094	$ 503,094
Transfer to foreclosed real estate			23,834
Write-down of foreclosed real estate			(31,955)
Proceeds from sale of foreclosed real estate			(35,896)
Loss on sale of foreclosed real estate			(1,299)
Balance at end of period	$ 457,778		$ 457,778

Note 12 - Fair Value Measurem73

Note 12 - Fair Value Measurements - Financial Assets and Liabilities Measured On a Recurring Basis (Details) - USD ($)	Jun. 30, 2018	Mar. 31, 2018
Loans receivable, net of unearned income	$ 381,044,039	$ 390,420,885
Fair Value, Inputs, Level 1 [Member] | Reported Value Measurement [Member]
Cash and cash equivalents	36,059,385	23,368,415
Fair Value, Inputs, Level 1 [Member] | Estimate of Fair Value Measurement [Member]
Cash and cash equivalents	36,059,385	23,368,415
Fair Value, Inputs, Level 2 [Member] | Reported Value Measurement [Member]
Federal Home Loan Bank stock	2,994,900	3,122,400
Bank-owned life insurance	17,569,375	17,455,850
Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value Measurement [Member]
Federal Home Loan Bank stock	2,994,900	3,122,400
Bank-owned life insurance	17,569,375	17,455,850
Fair Value, Inputs, Level 3 [Member] | Reported Value Measurement [Member]
Certificates of deposit held as investment	499,167	499,189
Loans receivable, net of unearned income	377,973,214	387,328,993
Deposits	404,474,061	405,142,975
Advance payments by borrowers for taxes and insurance	2,707,378	1,962,665
Borrowings, fair value	59,599,093	60,672,140
Fair Value, Inputs, Level 3 [Member] | Estimate of Fair Value Measurement [Member]
Certificates of deposit held as investment	484,380	492,751
Loans receivable, net of unearned income	367,539,525	385,818,260
Deposits	404,848,830	405,026,957
Advance payments by borrowers for taxes and insurance	2,707,378	1,962,665
Borrowings, fair value	$ 58,581,779	$ 60,494,922