The amount of net tangible assets recognized as of the acquisition date.

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The amount of accretable FMV adjustment to investor's initial investment in acquired loans not accounted for as debt securities with evidence of deterioration of credit quality.

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Number of financing receivables that have been impaired.

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Price of a single share of a number of saleable stocks paid or offered to be paid in a business combination.

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The amount of identifiable intangible assets recognized as of the acquisition date.

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The amount of the loan's contractually required payments receivable in excess of the amount of its cash flows expected to be collected. This relates to loans with deteriorating of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable.

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Amount of cash flows expected to be collected at acquisition of acquired loans not accounted for as debt securities with evidence of deterioration of credit quality.

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Amount of contractually required payments receivable at acquisition of acquired loans not accounted for as debt securities with evidence of deterioration of credit quality.

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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Professional and contract service expense includes cost reimbursements for support services related to contracted projects, outsourced management, technical and staff support.

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Note 3 - Acquisition (Details Textual)		12 Months Ended
Note 3 - Acquisition (Details Textual)	May 13, 2016 USD ($) $ / shares	Mar. 31, 2018 USD ($)	Mar. 31, 2017 USD ($)
Professional and Contract Services Expense, Total		$ 851,660	$ 1,046,450
Core Deposits [Member]
Finite-Lived Intangible Asset, Useful Life	8 years	8 years
Fraternity Community Bancorp, Inc. [Member]
Business Acquisition, Share Price \| $ / shares	$ 19.25
Payments to Acquire Businesses, Gross	$ 25,700,000		25,704,871
Effective Income Tax Rate Reconciliation, Percent, Total	39.45%
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Tangible Assets, Net	$ 23,600,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles		242,020
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Acquired During Period, Cash Flows Expected to be Collected at Acquisition	108,557,557
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable FMV Adjustment	246,626
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Acquired During Period, Contractually Required Payments Receivable at Acquisition	108,872,041
Certain Loans Acquired in Transfer, Nonaccretable Difference	314,484
Fraternity Community Bancorp, Inc. [Member] \| Performing Financial Instruments [Member]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Acquired During Period, Cash Flows Expected to be Collected at Acquisition	107,474,993
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable FMV Adjustment	301,672
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Acquired During Period, Contractually Required Payments Receivable at Acquisition	107,474,993
Certain Loans Acquired in Transfer, Nonaccretable Difference
Fraternity Community Bancorp, Inc. [Member] \| Nonperforming Financial Instruments [Member]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Acquired During Period, Cash Flows Expected to be Collected at Acquisition	1,082,564
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable FMV Adjustment	$ (55,046)
Financing Receivable, Impaired, Number of Contracts	23
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Acquired During Period, Contractually Required Payments Receivable at Acquisition	$ 1,397,048
Certain Loans Acquired in Transfer, Nonaccretable Difference	314,484
Professional and Contract Services Expense, Total		$ 305,000	$ 532,000
Fraternity Community Bancorp, Inc. [Member] \| Core Deposits [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	$ 242,020
Fraternity Community Bancorp, Inc. [Member] \| Noncompete Agreements [Member] \| Minimum [Member]
Finite-Lived Intangible Asset, Useful Life		1 year
Fraternity Community Bancorp, Inc. [Member] \| Noncompete Agreements [Member] \| Maximum [Member]
Finite-Lived Intangible Asset, Useful Life		2 years