Riverview Bancorp (RVSB) 10-K 15 Jun 22 2022 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($)	12 Months Ended
	Mar. 31, 2022	Jun. 15, 2022	Sep. 30, 2021
Document and Entity Information:
Document Type	10-K
Document Period End Date	Mar. 31, 2022
Document Annual Report	true
Document Transition Report	false
Entity File Number	000-22957
Entity Registrant Name	RIVERVIEW BANCORP INC
Entity Incorporation, State or Country Code	WA
Entity Tax Identification Number	91-1838969
Entity Address, Address Line One	900 Washington St.
Entity Address, Address Line Two	Ste. 900
Entity Address, City or Town	Vancouver
Entity Address, State or Province	WA
Entity Address, Postal Zip Code	98660
City Area Code	360
Local Phone Number	693-6650
Title of 12(b) Security	Common Stock, Par Value $0.01 per share
Trading Symbol	RVSB
Security Exchange Name	NASDAQ
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
ICFR Auditor Attestation Flag	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		22,128,907
Auditor Name	Delap LLP
Auditor Firm ID	116
Auditor Location	Lake Oswego, Oregon
Entity Central Index Key	0001041368
Current Fiscal Year End Date	--03-31
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	FY
Amendment Flag	false
Entity Public Float			$ 161,137,420

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2022	Mar. 31, 2021
ASSETS
Cash and cash equivalents (including interest-earning accounts of $224,589 and $254,205)	$ 241,424	$ 265,408
Certificates of deposit held for investment	249	249
Investment securities:
Available for sale, at estimated fair value	165,782	216,304
Held to maturity, at amortized cost (estimated fair value of $236,029 and $38,220)	253,100	39,574
Loans receivable (net of allowance for loan losses of $14,523 and $19,178)	975,885	924,057
Prepaid expenses and other assets	12,396	13,189
Accrued interest receivable	4,650	5,236
Federal Home Loan Bank ("FHLB") stock, at cost	2,019	1,722
Premises and equipment, net	17,166	17,824
Financing lease right-of-use ("ROU") assets	1,355	1,432
Deferred income taxes, net	7,501	5,419
Mortgage servicing rights, net	34	81
Goodwill	27,076	27,076
Core deposit intangible ("CDI"), net	495	619
Bank owned life insurance ("BOLI")	30,964	30,968
TOTAL ASSETS	1,740,096	1,549,158
LIABILITIES:
Deposits	1,533,878	1,346,060
Accrued expenses and other liabilities	19,298	21,906
Advance payments by borrowers for taxes and insurance	555	521
Junior subordinated debentures	26,833	26,748
Finance lease liability	2,283	2,329
Total liabilities	1,582,847	1,397,564
COMMITMENTS AND CONTINGENCIES (See Note 16)
SHAREHOLDERS' EQUITY:
Common stock, $.01 par value; 50,000,000 shares authorized March 31, 2022 - 22,155,636 shares issued and 22,127,396 outstanding March 31, 2021 - 22,351,235 shares issued and outstanding	221	223
Additional paid-in capital	62,048	63,650
Retained earnings	104,931	87,881
Accumulated other comprehensive loss	(9,951)	(160)
Total shareholders' equity	157,249	151,594
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$ 1,740,096	$ 1,549,158

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parentheticals) - USD ($) $ in Thousands	Mar. 31, 2022	Mar. 31, 2021
CONSOLIDATED BALANCE SHEETS
Interest-earning accounts included in cash (in dollars)	$ 224,589	$ 254,205
Fair value of mortgage-backed securities held to maturity (in dollars)	236,029	38,220
Allowance for loan losses (in dollars)	$ 14,523	$ 19,178
Serial preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Serial preferred stock, shares authorized	250,000	250,000
Serial preferred stock, shares issued	0	0
Serial preferred stock, shares outstanding	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	50,000,000	50,000,000
Common stock, shares issued	22,155,636	22,351,235
Common stock, shares outstanding	22,127,396	22,351,235

CONSOLIDATED STATEMENTS OF INCO

CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
INTEREST AND DIVIDEND INCOME:
Interest and fees on loans receivable	$ 44,079	$ 45,498	$ 46,405
Interest on investment securities - taxable	5,001	2,422	3,440
Interest on investment securities - nontaxable	237	129	117
Other interest and dividends	508	295	533
Total interest and dividend income	49,825	48,344	50,495
INTEREST EXPENSE:
Interest on deposits	1,424	2,544	2,890
Interest on borrowings	776	883	1,874
Total interest expense	2,200	3,427	4,764
Net interest income	47,625	44,917	45,731
Provision for (recapture of) loan losses	(4,625)	6,300	1,250
Net interest income after provision for (recapture of) loan losses	52,250	38,617	44,481
NON-INTEREST INCOME:
BOLI	800	813	864
Other, net	228	249	547
Total non-interest income, net	12,744	11,090	12,360
NON-INTEREST EXPENSE:
Salaries and employee benefits	23,635	22,570	22,805
Occupancy and depreciation	5,624	5,780	5,576
Data processing	2,940	2,662	2,629
Amortization of CDI	124	140	161
Advertising and marketing	614	466	856
FDIC insurance premium	439	319	81
State and local taxes	812	794	675
Telecommunications	197	295	327
Professional fees	1,235	1,231	1,120
(Gain) loss on sale of premises and equipment, net	(993)	14	(74)
Other	2,091	1,983	2,107
Total non-interest expense	36,718	36,254	36,263
INCOME BEFORE INCOME TAXES	28,276	13,453	20,578
PROVISION FOR INCOME TAXES	6,456	2,981	4,830
NET INCOME	$ 21,820	$ 10,472	$ 15,748
Earnings per common share:
Basic	$ 0.98	$ 0.47	$ 0.69
Diluted	$ 0.98	$ 0.47	$ 0.69
Weighted average number of common shares outstanding:
Basic	22,213,029	22,296,195	22,707,624
Diluted	22,224,947	22,312,831	22,744,045
Fees and service charges
NON-INTEREST INCOME:
Non-interest income	$ 7,109	$ 6,382	$ 6,541
Asset management fees.
NON-INTEREST INCOME:
Non-interest income	4,107	$ 3,646	$ 4,408
BOLI Death Benefit In Excess Of Cash Surrender Value
NON-INTEREST INCOME:
Non-interest income	500
BOLI death benefit in excess of cash surrender value	$ 500

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
Net income	$ 21,820	$ 10,472	$ 15,748
Other comprehensive income (loss):
Net unrealized holding gains (losses) from available for sale investment securities arising during the period, net of tax of $3,091, $713, and ($1,499), respectively	(9,791)	(2,259)	4,748
Reclassification adjustment of net gain from sale of available for sale investment securities included in income, net of tax of $0, $0, and $7, respectively			(23)
Total other comprehensive income (loss), net	(9,791)	(2,259)	4,725
Total comprehensive income, net	$ 12,029	$ 8,213	$ 20,473

CONSOLIDATED STATEMENTS OF CO_2

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
Tax effect of unrealized holding gain from available for sale securities	$ 3,091	$ 713	$ (1,499)
Tax effect of reclassification adjustment of net gain from sale of available for sale investment securities included in income	$ 0	$ 0	$ 7

CONSOLIDATED STATEMENTS OF SHAR

CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	Common Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Total
Balance at Mar. 31, 2019	$ 226	$ 65,094	$ 70,428	$ (2,626)	$ 133,122
Balance (in shares) at Mar. 31, 2019	22,607,712
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income			15,748		15,748
Cash dividend on common stock			(4,306)		(4,306)
Exercise of stock options	$ 1	226			$ 227
Exercise of stock options (in shares)	58,000				58,000
Common stock repurchased	$ (2)	(1,017)			$ (1,019)
Common stock repurchased (in shares)	(204,100)
Restricted stock grants (in shares)	82,673
Stock-based compensation expense		346			346
Other comprehensive income (loss), net				4,725	4,725
Balance at Mar. 31, 2020	$ 225	64,649	81,870	2,099	148,843
Balance (in shares) at Mar. 31, 2020	22,544,285
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income			10,472		10,472
Cash dividend on common stock			(4,461)		(4,461)
Exercise of stock options	$ 1	49			$ 50
Exercise of stock options (in shares)	20,000				20,000
Common stock repurchased	$ (3)	(1,444)			$ (1,447)
Common stock repurchased (in shares)	(295,900)
Restricted stock grants (in shares)	90,763
Restricted stock cancelled (in shares)	(7,913)
Stock-based compensation expense		396			396
Other comprehensive income (loss), net				(2,259)	(2,259)
Balance at Mar. 31, 2021	$ 223	63,650	87,881	(160)	151,594
Balance (in shares) at Mar. 31, 2021	22,351,235
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income			21,820		21,820
Cash dividend on common stock			(4,769)		(4,769)
Exercise of stock options		17	(1)		$ 16
Exercise of stock options (in shares)	6,000				6,000
Common stock repurchased	$ (2)	(1,938)			$ (1,940)
Common stock repurchased (in shares)	(278,148)
Restricted stock grants (in shares)	69,285
Restricted stock cancelled (in shares)	(20,976)
Stock-based compensation expense		319			319
Other comprehensive income (loss), net				(9,791)	(9,791)
Balance at Mar. 31, 2022	$ 221	$ 62,048	$ 104,931	$ (9,951)	$ 157,249
Balance (in shares) at Mar. 31, 2022	22,127,396

CONSOLIDATED STATEMENTS OF SH_2

CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Parentheticals) - $ / shares	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY
Dividend per share (in dollars per share)	$ 0.215	$ 0.20	$ 0.19

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 21,820,000	$ 10,472,000	$ 15,748,000
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	3,521,000	3,212,000	2,963,000
Purchased loans amortization (accretion), net	(11,000)	274,000	53,000
Provision for (recapture of) loan losses	(4,625,000)	6,300,000	1,250,000
Provision (benefit) for deferred income taxes	1,010,000	(1,429,000)	(574,000)
Stock-based compensation expense	319,000	396,000	346,000
Increase (decrease) in deferred loan origination fees, net of amortization	(2,125,000)	2,477,000	138,000
Origination of loans held for sale		(913,000)	(8,941,000)
Proceeds from sales of loans held for sale		1,214,000	9,743,000
Net gains on loans held for sale and sales of premises and equipment	(993,000)	(14,000)	(355,000)
Income from BOLI	(800,000)	(813,000)	(864,000)
BOLI death benefit in excess of cash surrender value	(500,000)
Changes in certain other assets and liabilities:
Prepaid expenses and other assets	1,336,000	391,000	2,622,000
Accrued interest receivable	586,000	(1,532,000)	215,000
Accrued expenses and other liabilities	(3,075,000)	4,132,000	(6,427,000)
Net cash provided by operating activities	16,463,000	24,167,000	15,917,000
CASH FLOWS FROM INVESTING ACTIVITIES:
Loan repayments (originations), net	40,833,000	(30,379,000)	(11,786,000)
Purchases of loans receivable	(85,900,000)	(3,844,000)	(23,818,000)
Principal repayments on investment securities available for sale	37,157,000	43,824,000	28,371,000
Purchases of investment securities available for sale	(86,621,000)	(120,371,000)	(18,125,000)
Proceeds from calls of investment securities available for sale		4,000,000	24,623,000
Principal repayments on investment securities held to maturity	9,627,000	248,000	7,000
Purchases of investment securities held to maturity	(137,936,000)	(39,871,000)
Purchases of premises and equipment and capitalized software	(3,254,000)	(3,552,000)	(2,953,000)
Redemption of certificates of deposit held for investment			498,000
Redemption (purchase) of FHLB stock, net	(297,000)	(302,000)	2,224,000
Proceeds from death benefit on BOLI	1,305,000
Proceeds from sales of real estate owned ("REO") and premises and equipment	3,427,000		81,000
Net cash used in investing activities	(221,659,000)	(150,247,000)	(878,000)
CASH FLOWS FROM FINANCING ACTIVITIES:
Net increase in deposits	187,818,000	355,617,000	65,394,000
Dividends paid	(4,670,000)	(4,478,000)	(4,075,000)
Proceeds from borrowings	2,000,000	31,000,000	224,897,000
Repayment of borrowings	(2,000,000)	(31,000,000)	(281,483,000)
Net increase in advance payments by borrowers for taxes and insurance	34,000	(182,000)	72,000
Principal payments on finance lease liability	(46,000)	(40,000)	(34,000)
Proceeds from exercise of stock options	16,000	50,000	227,000
Repurchase of common stock	(1,940,000)	(1,447,000)	(1,019,000)
Net cash provided by financing activities	181,212,000	349,520,000	3,979,000
NET INCREASE IN CASH AND CASH EQUIVALENTS	(23,984,000)	223,440,000	19,018,000
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	265,408,000	41,968,000	22,950,000
CASH AND CASH EQUIVALENTS, END OF PERIOD	241,424,000	265,408,000	41,968,000
Cash paid during the period for:
Interest	1,947,000	3,255,000	4,576,000
Income taxes	5,410,000	4,738,000	4,438,000
NONCASH INVESTING AND FINANCING ACTIVITIES:
Dividends declared and accrued in other liabilities	1,217,000	1,118,000	1,135,000
Net unrealized holding gains (losses) from available for sale investment securities	(12,882,000)	(2,972,000)	6,217,000
Income tax effect related to other comprehensive income (loss)	3,091,000	713,000	(1,492,000)
ROU lease assets obtained in exchange for operating lease liabilities	$ 441,000	$ 6,148,000	$ 5,603,000

SUMMARY OF SIGNIFICANT ACCOUNTI

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	12 Months Ended
	Mar. 31, 2022
Accounting Policies [Abstract]
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	1. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Principles of Consolidation – The accompanying consolidated financial statements include the accounts of Riverview Bancorp, Inc.; its wholly-owned subsidiary, Riverview Community Bank (the “Bank”); the Bank’s wholly-owned subsidiary, Riverview Services, Inc., and the Bank’s majority-owned subsidiary, Riverview Trust Company (the “Trust Company”) (collectively referred to as the “Company”). As a Washington state-chartered commercial bank, the Bank’s regulators are the Washington State Department of Financial Institutions (“WDFI”) and the Federal Deposit Insurance Corporation (“FDIC”). The Board of Governors of the Federal Reserve System (“Federal Reserve”) is the primary federal regulator for Riverview Bancorp, Inc. All inter-company transactions and balances have been eliminated in consolidation. For the period from April 1, 2017 through December 2019, the Trust Company was a wholly-owned subsidiary of the Bank. In December 2019, the Trust Company issued 1,500 shares of Trust Company stock in conjunction with the exercise of 1,500 Trust Company stock options by the Trust Company’s President and Chief Executive Officer. In both October 2020 and May 2021, the Trust Company issued an additional 500 shares of Trust Company stock with the exercise of options for 500 shares of Trust Company common stock by the Trust Company’s President and Chief Executive Officer. As a result of these transactions, the Bank’s ownership in the Trust Company decreased from 100% to 97.3% , resulting in a 2.7% noncontrolling interest held by the Trust Company’s President and Chief Executive Officer. The noncontrolling interest was $212,000 and $154,000 as of March 31, 2022 and 2021, respectively, and net income attributable to the noncontrolling interest was $19,000 , $10,000 and $5,000 for the years ended March 31, 2022, 2021 and 2020, respectively. These amounts are not presented separately in the accompanying consolidated financial statements due to their insignificance. The Company has three subsidiary grantor trusts which were established in connection with the issuance of trust preferred securities (see Note 9). In accordance with accounting principles generally accepted in the United States of America (“generally accepted accounting principles” or “GAAP”), the accounts and transactions of the trusts are not included in the accompanying consolidated financial statements. Nature of Operations – The Bank is a community-oriented financial institution which operates 17 branches in rural and suburban communities in southwest Washington State and Multnomah, Washington and Marion counties of Oregon. The Bank is engaged primarily in the business of attracting deposits from the general public and using such funds, together with other borrowings, to make various commercial business, commercial real estate, land, multi-family real estate, real estate construction and consumer loans. Additionally, the Trust Company offers trust and investment services and Riverview Services , Inc. acts as a trustee for deeds of trust on mortgage loans granted by the Bank and receives a reconveyance fee for each deed of trust. Business segments – The Company’s operations are managed along two operating segments, consisting of banking operations performed by the Bank and trust and investment services performed by the Trust Company. While the chief operating decision maker uses financial information related to these segments to analyze business performance and allocate resources, the trust and investment services segment does not meet the quantitative threshold under GAAP to be considered a reportable segment. As such, these operating segments are aggregated into a single reportable operating segment in the consolidated financial statements. No revenues are derived from foreign countries. Use of Estimates in the Preparation of Consolidated Financial Statements – The preparation of consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of certain assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of related revenue and expense during the reporting period. Actual results could differ from those estimates. The estimates utilized to determine the appropriate allowance for loan losses at March 31, 2022 may be materially different from actual results due to the novel coronavirus of 2019 (“COVID-19”) pandemic. Cash and Cash Equivalents – Cash and cash equivalents include amounts on hand, due from banks and interest-earning deposits in other banks. Cash and cash equivalents have a maturity of 90 days or less at the time of purchase. Certificates of Deposit Held for Investment – Certificates of deposit held for investment include amounts invested with financial institutions at a stated interest rate and maturity date. Early withdrawal penalties apply; however, the Company plans to hold these investments to maturity. Investment Securities – Investments in debt securities are classified as held to maturity when the Company has the ability and positive intent to hold such securities to maturity. Investments in debt securities held to maturity are carried at amortized cost. Unrealized losses on investments in debt securities held to maturity due to fluctuations in fair value are recognized when it is determined that a credit-related other than temporary decline in value has occurred. Investments in debt securities bought and held principally for the purpose of sale in the near-term are classified as trading securities. Investments in debt securities that the Company intends to hold for an indefinite period, but not necessarily to maturity, are classified as available for sale. Such debt securities may be sold to implement the Company’s asset/liability management strategies and in response to changes in interest rates and similar factors. Investments in debt securities available for sale are reported at estimated fair value. Unrealized gains and losses on investment securities available for sale, net of the related deferred tax effect, are included in total comprehensive income and are reported as a net amount in a separate component of shareholders’ equity entitled “accumulated other comprehensive income (loss).” Realized gains and losses on sales of investments in debt securities available for sale, determined using the specific identification method, are included in earnings on the trade date. Amortization of premiums and accretion of discounts are recognized in interest income over the period to contractual maturity or expected call, if sooner. The Company’s investment portfolio consists of debt securities and does not include any equity securities. The Company analyzes investments in debt securities for other than temporary impairment (“OTTI”) on a quarterly basis. OTTI is separated into a credit component and a noncredit component. Credit component losses are reported in non-interest income when the present value of expected future cash flows is less than the amortized cost. Noncredit component losses are recorded in other comprehensive income (loss) when the Company (1) does not intend to sell the security or (2) is not more likely than not to have to sell the security prior to the security’s anticipated recovery. If the Company is likely to sell an investment in a debt security, any noncredit component losses are recognized and are reported in non-interest income. Loans Receivable – Loans are stated at the amount of unpaid principal, reduced by net deferred loan origination fees and an allowance for loan losses. Interest on loans is accrued daily based on the principal amount outstanding. Loans are reviewed regularly and it is the Company’s general policy that a loan is past due when it is 30 days to 89 days delinquent. In general, when a loan is 90 days delinquent or when collection of principal or interest appears doubtful, it is placed on non-accrual status, at which time the accrual of interest ceases and a reserve for unrecoverable accrued interest is established and charged against operations. As a general practice, payments received on non-accrual loans are applied to reduce the outstanding principal balance on a cost recovery method. Also, as a general practice, a loan is not removed from non-accrual status until all delinquent principal, interest and late fees have been brought current and the borrower has demonstrated a history of performance based upon the contractual terms of the note. A history of repayment performance generally would be a minimum of six months. In accordance with provisions of The Coronavirus Aid, Relief, and Economic Security Act of 2020 (the “CARES Act”) and the Consolidated Appropriations Act, 2021 (the “CAA 2021”) and related regulatory guidance, the Company did not designate loans with payment deferrals granted due to the COVID-19 pandemic as delinquent. Loan origination and commitment fees and certain direct loan origination costs are deferred and amortized as an adjustment of the yield of the related loan. Acquired Loans – Purchased loans, including loans acquired in business combinations, are recorded at their estimated fair value at the acquisition date. Credit discounts are included in the determination of fair value; therefore, an allowance for loan losses is not recorded at the acquisition date. Acquired loans are evaluated upon acquisition and classified as either purchased credit-impaired (“PCI”) or purchased non-credit-impaired. PCI loans reflect credit deterioration since origination such that it is probable at acquisition that the Company will be unable to collect all contractually required payments. The excess of the cash flows expected to be collected over a PCI loan’s carrying value is considered to be the accretable yield and is recognized as interest income over the estimated life of the PCI loan using the effective yield method. The excess of the undiscounted contractual balances due over the cash flows expected to be collected is considered to be the nonaccretable difference. The nonaccretable difference represents the Company ’s estimate of the credit losses expected to occur and would be considered in determining the estimated fair value of the loans as of the acquisition date. Subsequent to the acquisition date, any increases in expected cash flows over those expected at the purchase date in excess of fair value are adjusted through a change to the accretable yield on a prospective basis. Any subsequent decreases in expected cash flows attributable to credit deterioration are recognized by recording an allowance for loan losses. The Company had no PCI loans as of March 31, 2022 and 2021. For purchased non-credit-impaired loans, the difference between the fair value and unpaid principal balance of the loan at the acquisition date is amortized or accreted to interest income over the lives of the related loans. Any subsequent deterioration in credit quality is recognized by recording an allowance for loan losses. Allowance for Loan Losses – The allowance for loan losses is maintained at a level sufficient to provide for estimated loan losses based on evaluating known and inherent risks in the loan portfolio. The allowance is provided based upon management’s ongoing quarterly assessment of the pertinent factors underlying the quality of the loan portfolio. These factors include changes in the size and composition of the loan portfolio, delinquency levels, actual loan loss experience, current economic conditions and a detailed analysis of individual loans for which full collectability may not be assured. The detailed analysis includes techniques to estimate the fair value of loan collateral and the existence of potential alternative sources of repayment. The allowance consists of specific, general and unallocated components. The specific component relates to loans that are considered impaired. For loans that are classified as impaired, an allowance is established when the discounted cash flows or collateral value (less estimated selling costs, if applicable) of the impaired loan is lower than the carrying value of that loan. The general component covers non-impaired loans based on the Company’s risk rating system and historical loss experience adjusted for qualitative factors. The Company calculates its historical loss rates using the average of the last four quarterly 24-month periods. The Company calculates and applies its historical loss rates by individual loan types in its loan portfolio. These historical loss rates are adjusted for qualitative and environmental factors. An unallocated component is maintained to cover uncertainties that the Company believes have resulted in incurred losses that have not yet been allocated to specific elements of the general and specific components of the allowance for loan losses. Such factors include uncertainties in economic conditions, uncertainties in identifying triggering events that directly correlate to subsequent loss rates, changes in appraised value of underlying collateral, risk factors that have not yet manifested themselves in loss allocation factors and historical loss experience data that may not precisely correspond to the current loan portfolio or economic conditions. The unallocated component of the allowance reflects the margin of imprecision inherent in the underlying assumptions used in the methodologies for estimating specific and general losses in the loan portfolio. The appropriate allowance level is estimated based upon factors and trends identified by the Company as of the date of the filing of the consolidated financial statements. When available information confirms that specific loans or portions thereof are uncollectible, identified amounts are charged against the allowance for loan losses. The existence of some or all of the following criteria will generally confirm that a loss has been incurred: the loan is significantly delinquent and the borrower has not demonstrated the ability or intent to bring the loan current; the Company has no recourse to the borrower, or if it does, the borrower has insufficient assets to pay the debt; and/or the estimated fair value of the loan collateral is significantly below the current loan balance, and there is little or no near-term prospect for improvement. A loan is considered impaired when it is probable that the Company will be unable to collect all amounts when due (principal and interest) according to the contractual terms of the loan agreement. Typically, factors used in determining if a loan is impaired include, but are not limited to, whether the loan is 90 days or more delinquent, internally designated as substandard or worse, on non-accrual status or represents a troubled debt restructuring (“TDR”). The Company elected to apply the temporary relief under the CARES Act as extended by the CAA 2021 and related regulatory guidance to certain eligible short-term modifications, past due loans, and other modifications. Qualifying loan modifications entered into prior to January 1, 2022, were not classified as a TDR for accounting or disclosure purposes. Loans subject to forbearance under this COVID-19 loan modification program are not reported as past due or placed on non-accrual status during the forbearance time period, and interest income continues to be recognized over the contractual life of the loans. As of March 31, 2022, the Company had no remaining qualifying loan modifications related to the COVID-19 pandemic. The majority of the Company’s impaired loans are considered collateral dependent. When a loan is considered collateral dependent, impairment is measured using the estimated value of the underlying collateral, less any prior liens, and when applicable, less estimated selling costs. For impaired loans that are not collateral dependent, impairment is measured using the present value of expected future cash flows, discounted at the loan’s original effective interest rate. When the estimated net realizable value of the impaired loan is less than the recorded investment in the loan (including accrued interest, net deferred loan fees or costs, and unamortized premium or discount), an impairment is recognized by adjusting an allocation of the allowance for loan losses. Subsequent to the initial allocation of allowance to the individual loan, the Company may conclude that it is appropriate to record a charge-off of the impaired portion of the loan. When a charge-off is recorded, the loan balance is reduced and the specific allowance is eliminated. Generally, when a collateral dependent loan is initially measured for impairment and has not had an appraisal of the collateral in the last six months, the Company obtains an updated market valuation. Subsequently, the Company generally obtains an updated market valuation of the collateral on an annual basis. The collateral valuation may occur more frequently if the Company determines that there is an indication that the market value may have declined. In accordance with the Company’s policy guidelines, unsecured loans are generally charged-off when no payments have been received for three consecutive months unless an alternative action plan is in effect. Consumer installment loans delinquent six months or more that have not received at least 75% of their required monthly payments in the last 90 days are charged-off. In addition, loans discharged in bankruptcy proceedings are charged-off. Loans under bankruptcy protection with no payments received for four consecutive months are charged-off. The outstanding balance of a secured loan that is in excess of the net realizable value of the underlying collateral is generally charged-off if no payments are received for four to five consecutive months. However, charge-offs are postponed if alternative proposals to restructure, obtain additional guarantors, obtain additional assets as collateral or a potential sale of the underlying collateral would result in full repayment of the outstanding loan balance. Once any other potential sources of repayment are exhausted, the impaired portion of the loan is charged-off. Regardless of whether a loan is unsecured or collateralized, once an amount is determined to be a confirmed loan loss it is charged-off. A provision for loan losses is charged against income and is added to the allowance for loan losses based on regular assessments of the loan portfolio. The allowance for loan losses is allocated to certain loan categories based on the relative risk characteristics, asset classifications and actual loss experience of the loan portfolio. While management has allocated the allowance for loan losses to various loan portfolio segments, the allowance is general in nature and is available for the loan portfolio in its entirety. Management’s evaluation of the allowance for loan losses is based on ongoing, quarterly assessments of the known and inherent risks in the loan portfolio. Loss factors are based on the Company’s historical loss experience with additional consideration and adjustments made for changes in economic conditions, changes in the amount and composition of the loan portfolio, delinquency rates, changes in collateral values, seasoning of the loan portfolio, duration of the current business cycle, a detailed analysis of impaired loans and other factors as deemed appropriate. These factors are evaluated on a quarterly basis. Loss rates used by the Company are affected as changes in these factors increase or decrease from quarter to quarter. In addition, regulatory agencies, as an integral part of their examination process, periodically review the Company’s allowance for loan losses and may require the Company to make additions to the allowance based on their judgment about information available to them at the time of their examinations. Allowance for Unfunded Loan Commitments – The allowance for unfunded loan commitments is maintained at a level believed by management to be sufficient to absorb estimated probable losses related to these unfunded credit facilities. The determination of the adequacy of the allowance is based on periodic evaluations of the unfunded credit facilities including an assessment of the probability of commitment usage, credit risk factors for loans outstanding to these same customers, and the terms and expiration dates of the unfunded credit facilities. The allowance for unfunded loan commitments is included in accrued expenses and other liabilities in the consolidated balance sheets, with changes to the balance charged against non-interest expense. REO – REO consists of properties acquired through foreclosure and is initially recorded at the estimated fair value of the properties, less estimated costs of disposal. At the time of foreclosure, specific charge-offs are taken against the allowance for loan losses based upon a detailed analysis of the fair value of collateral on the underlying loans on which the Company is in the process of foreclosing. Subsequently, the Company performs an evaluation of the properties and records a valuation allowance with an offsetting charge to REO expenses for any declines in value. Management considers third-party appraisals, as well as independent fair market value assessments from realtors or persons involved in selling real estate, in determining the estimated fair value of particular properties. In addition, as certain of these third-party appraisals and independent fair market value assessments are only updated periodically, changes in the values of specific properties may have occurred subsequent to the most recent appraisals. The amounts the Company will ultimately recover and record in the accompanying consolidated financial statements from the disposition of REO may differ from the amounts used in arriving at the net carrying value of these assets because of future market factors beyond the Company’s control or because of changes in the Company’s strategy for the sale of the property. Costs relating to development and improvement of the properties or assets are capitalized, while costs relating to holding the properties or assets are expensed. The Company held no REO at March 31, 2022 and 2021. At March 31, 2022, there were no mortgage loans secured by residential real estate for which formal foreclosure proceedings were in process. Federal Home Loan Bank Stock – The Bank, as a member of the Federal Home Loan Bank of Des Moines (“FHLB”), is required to maintain a minimum investment in capital stock of the FHLB based on specific percentages of its outstanding FHLB advances. The Company’s investment in FHLB stock is carried at cost, which approximates fair value. The Company views its investment in FHLB stock as a long-term investment. Accordingly, when evaluating FHLB stock for impairment, the value is determined based on the ultimate redemption of the par value rather than recognizing temporary declines in value. The determination of whether a decline affects the ultimate redemption value is influenced by criteria such as: (1) the significance of any decline in net assets of the FHLB as compared to the capital stock amount of the FHLB and the length of time this situation has persisted, (2) commitments by the FHLB to make payments required by law or regulation and the level of such payments in relation to the operating performance of the FHLB, (3) the impact of legislative and regulatory changes on institutions and, accordingly, the customer base of the FHLB, and (4) the liquidity position of the FHLB. The Company evaluated its investment in FHLB stock for OTTI, consistent with its accounting policy. Based on the Company’s evaluation, the Company determined there is not any OTTI on its FHLB stock at March 31, 2022. Premises and Equipment – Premises and equipment are stated at cost less accumulated depreciation and amortization. Leasehold improvements are amortized over the estimated term of the related lease or the estimated useful life of the improvements, whichever is less. Depreciation and amortization is generally computed on the straight-line method over the following estimated useful lives: buildings and improvements – up to 45 years ; furniture and equipment – 3 to 20 years ; and leasehold improvements – 15 to 25 years , or estimated lease term if shorter. Gains or losses on dispositions are reflected in earnings. The cost of maintenance and repairs is charged to expense as incurred. Assets are reviewed for impairment when events indicate their carrying value may not be recoverable. If management determines impairment exists the asset is reduced by an offsetting charge to expense. The assets held under the finance lease are amortized on a straight-line basis over the lease term and the amortization is included in depreciation and amortization expense. Mortgage Servicing Rights (“MSRs”) – The Company services certain loans that it has originated and sold to the Federal Home Loan Mortgage Corporation (“FHLMC”) . Loan servicing includes collecting payments; remitting funds to investors, insurance companies and tax authorities; collecting delinquent payments; and foreclosing on properties when necessary. Fees earned for servicing loans for the FHLMC are reported as income when the related mortgage loan payments are collected. Loan servicing costs are charged to expense as incurred. In addition, the Company has recorded MSRs, which represent the rights to service loans. The Company records its originated MSRs at fair value in accordance with GAAP, which requires the Company to allocate the total cost of all mortgage loans sold between the MSRs and the loans (without the MSRs) based on their relative fair values if it is practicable to estimate those fair values. The Company stratifies its MSRs based on the predominant characteristics of the underlying financial assets including the coupon interest rate and the contractual maturity of the mortgage. The Company is amortizing the MSRs in proportion to and over the period of estimated net servicing income. MSRs were not significant at both March 31, 2022 and 2021. Business Combinations, CDI and Goodwill – GAAP requires the total purchase price in a business combination to be allocated to the estimated fair values of assets acquired and liabilities assumed, including certain intangible assets. Subsequent adjustments to the initial allocation of the purchase price may be made related to fair value estimates for which all relevant information has not been obtained, known, or discovered relating to the acquired entity during the allocation period (which is the period of time required to identify and measure the estimated fair values of the assets acquired and liabilities assumed in a business combination). The allocation period is generally limited to one year following consummation of a business combination. CDI represents the value assigned to demand, interest checking, money market and savings accounts acquired as part of a business combination. CDI represents the future economic benefit of the potential cost savings from acquiring core deposits as part of a business combination compared to the cost of alternative funding sources. CDI is amortized to non-interest expense using an accelerated method based on an estimated runoff of related deposits over a period of ten years . CDI is evaluated for impairment and recoverability whenever events or changes in circumstances indicate that its carrying amount may not be recoverable, with any changes in estimated useful life accounted for prospectively over the revised remaining life. At both March 31, 2022 and 2021, gross CDI was $1.4 million. At March 31, 2022 and 2021, accumulated amortization was $868,000 and $744,000 , respectively. The amortization expense for CDI in future years is estimated to be $116,000 , $108,000 , $100,000 , $93,000 , and $78,000 for the years ending March 31, 2023, 2024, 2025, 2026, and 2027, respectively. Goodwill and certain other intangibles generally arise from business combinations. Goodwill and other intangibles generated from business combinations that are deemed to have indefinite lives are not subject to amortization and are instead tested for impairment not less than annually. The Company performs an annual review in the third quarter of each year, or more frequently if indicators of potential impairment exist, to determine if the recorded goodwill is impaired (see Note 7). BOLI – BOLI policies are recorded at their cash surrender value less applicable surrender charges. Income from BOLI is recognized when earned. Advertising and Marketing – Costs incurred for advertising, merchandising, market research, community investment and business development are classified as advertising and marketing expense and are expensed as incurred. Income Taxes – Income taxes are accounted for using the asset and liability method. Under this method, a deferred tax asset or liability is determined based on the enacted tax rates which will be in effect when the differences between the financial statement carrying amounts and tax basis of existing assets and liabilities are expected to be reported in the Company’s income tax returns. The effect on deferred taxes of a change in tax rates is recognized in income in the period that includes the enactment date. Valuation allowances are established to reduce the net carrying amount of deferred tax assets if it is determined to be more likely than not that all or some portion of the potential deferred tax asset will not be realized. The Company files a consolidated federal income tax return. The Bank provides for income taxes separately and remits to the Company amounts currently due. Transfers of financial assets – Transfers of financial assets are accounted for as sales when control over the assets has been surrendered. Control over transferred assets is deemed to be surrendered when (1) the assets have been isolated from the Company, (2) the transferee obtains the right (free of conditions that constrain it from taking advantage of that right) to pledge or exchange the transferred assets, and (3) the Company does not maintain effective control over the transferred assets through an agreement to repurchase them before their maturity. Trust Assets – Assets held by the Trust Company in a fiduciary or agency capacity for trust customers are not included in the consolidated financial statements because such items are not assets of the Company. Assets totaling $1.3 billion were held in trust as of both March 31, 2022 and 2021. Earnings Per Share – GAAP requires all companies whose capital structure includes dilutive potential common shares to make a dual presentation of basic and diluted earnings per share for all periods presented. The Company’s basic earnings per share is computed by dividing net income available to common shareholders by the weighted average number of common shares outstanding for the period , without consideration of any dilutive items. Nonvested shares of restricted stock are included in the computation of basic earnings per share because the holder has voting rights and shares in non-forfeitable dividends during the vesting period. The Company’s diluted earnings per share reflects the potential dilution that could occur if securities or other contracts to issue common stock were exercised and has been computed after giving consideration to the weighted average diluted effect of the Company’s stock options. Stock-Based Compensation – The Company measures compensation cost for all stock-based awards based on the grant-date fair value of the awards and recognizes compensation cost over the service period of stock-based awards. The fair value of stock options is determined using the Black-Scholes valuation model. The fair value of restricted stock is determined based on the grant date fair value of the Company’s common stock. Accounting Pronouncements Recently Issued or Adopted – In June 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2016-13, “Financial Instruments – Credit Losses: Measurement of Credit Losses on Financial Instruments” (“ASU 2016-13”) as amended by ASU 2018-19, ASU 2019-04, ASU 2019-05, ASU 2019-10 and ASU 2019-11. ASU 2016-13 replaces the existing incurred losses methodology for estimating allowances with a current expected credit losses (“CECL”) methodology with respect to most financial assets measured at amortized cost and certain other instruments, including trade and other receivables, loans, held to maturity investment securities and off-balance s

RESTRICTED ASSETS

RESTRICTED ASSETS	12 Months Ended
	Mar. 31, 2022
Other Restricted Assets [Abstract]
RESTRICTED ASSETS	2. RESTRICTED ASSETS Regulations of the Federal Reserve require that the Bank maintain minimum reserve balances either on hand or on deposit with the Federal Reserve Bank of San Francisco (“FRB”) based on a percentage of deposits. Effective March 26, 2020, the reserve requirement was reduced to zero and the Bank was not required to maintain any such reserve balances as of March 31, 2022 and 2021, respectively.

INVESTMENT SECURITIES

INVESTMENT SECURITIES	12 Months Ended
	Mar. 31, 2022
INVESTMENT SECURITIES
INVESTMENT SECURITIES	3. INVESTMENT SECURITIES The amortized cost and approximate fair value of investment securities consisted of the following at the dates indicated (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Gross Gross Estimated ​ ​ Amortized ​ Unrealized ​ Unrealized ​ Fair ​ ​ Cost ​ Gains ​ Losses ​ Value March 31, 2022 ​ ​ ​ ​ Available for sale: ​ ​ ​ ​ ​ Municipal securities ​ $ 44,104 ​ $ 14 ​ $ (4,514) ​ $ 39,604 Agency securities ​ 43,848 ​ ​ 1 ​ ​ (3,144) ​ ​ 40,705 Real estate mortgage investment conduits (1) ​ 35,563 ​ ​ 1 ​ ​ (2,847) ​ ​ 32,717 Residential mortgage-backed securities (1) ​ 17,368 ​ ​ 13 ​ ​ (436) ​ ​ 16,945 Other mortgage-backed securities (2) ​ 37,991 ​ ​ 28 ​ ​ (2,208) ​ ​ 35,811 Total available for sale ​ $ 178,874 ​ $ 57 ​ $ (13,149) ​ $ 165,782 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Held to maturity: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Municipal securities ​ $ 10,368 ​ $ — ​ $ (1,422) ​ $ 8,946 Agency securities ​ ​ 45,277 ​ ​ — ​ ​ (2,450) ​ ​ 42,827 Real estate mortgage investment conduits (1) ​ ​ 39,394 ​ ​ — ​ ​ (2,457) ​ ​ 36,937 Residential mortgage-backed securities (1) ​ ​ 137,343 ​ ​ — ​ ​ (8,883) ​ ​ 128,460 Other mortgage-backed securities (3) ​ ​ 20,718 ​ ​ — ​ ​ (1,859) ​ ​ 18,859 Total held to maturity ​ $ 253,100 ​ $ — ​ $ (17,071) ​ $ 236,029 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Gross Gross ​ ​ ​ ​ Amortized ​ Unrealized ​ Unrealized ​ Estimated ​ ​ Cost ​ Gains ​ Losses ​ Fair Value March 31, 2021 ​ ​ ​ ​ Available for sale: ​ ​ ​ ​ Municipal securities ​ $ 23,883 ​ $ 238 ​ $ (555) ​ $ 23,566 Agency securities ​ 25,996 ​ ​ 5 ​ ​ (686) ​ ​ 25,315 Real estate mortgage investment conduits (1) ​ 55,826 ​ ​ 469 ​ ​ (480) ​ ​ 55,815 Residential mortgage-backed securities (1) ​ 71,787 ​ ​ 1,075 ​ ​ (614) ​ ​ 72,248 Other mortgage-backed securities (2) ​ 39,022 ​ ​ 514 ​ ​ (176) ​ ​ 39,360 Total available for sale ​ $ 216,514 ​ $ 2,301 ​ $ (2,511) ​ $ 216,304 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Held to maturity: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Municipal securities ​ $ 10,391 ​ $ — ​ $ (509) ​ $ 9,882 Agency securities ​ ​ 7,688 ​ ​ — ​ ​ (220) ​ ​ 7,468 Real estate mortgage investment conduits (1) ​ ​ 9,207 ​ ​ — ​ ​ (141) ​ ​ 9,066 Residential mortgage-backed securities (3) ​ ​ 6,175 ​ ​ — ​ ​ (119) ​ ​ 6,056 Other mortgage-backed securities (2) ​ ​ 6,113 ​ ​ — ​ ​ (365) ​ ​ 5,748 Total held to maturity ​ $ 39,574 ​ $ — ​ $ (1,354) ​ $ 38,220 ​ (1) Comprised of FHLMC, Federal National Mortgage Association (“FNMA”) and Ginnie Mae (“GNMA”) issued securities. (2) Comprised of U.S. Small Business Administration (“SBA”) issued securities and commercial real estate (“CRE”) secured securities issued by FNMA and FHLMC. (3) Comprised of FHLMC and FNMA issued securities . ​ During the third fiscal quarter of 2022, the Company reassessed the classification of certain investment securities and transferred $85.8 million of U.S. government and agency securities from the available for sale classific ation to the held to maturity classification. The net unrealized after tax gain of $18,000 was deemed insignificant and the book balance of investment securities were transferred. No gains or losses were recognized in connection with the transfer. ​ The contractual maturities of investment securities as of March 31, 2022 are as follows (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Available for Sale ​ Held to Maturity ​ ​ ​ Estimated ​ ​ Estimated ​ ​ Amortized ​ Fair ​ Amortized ​ Fair ​ ​ Cost ​ Value ​ Cost ​ Value Due in one year or less ​ $ 2,002 ​ $ 2,004 ​ $ — ​ $ — Due after one year through five years ​ 14,073 ​ 13,339 ​ 24,344 ​ 23,559 Due after five years through ten years ​ 63,995 ​ 59,735 ​ 39,407 ​ 36,305 Due after ten years ​ 98,804 ​ 90,704 ​ 189,349 ​ 176,165 Total ​ $ 178,874 ​ $ 165,782 ​ $ 253,100 ​ $ 236,029 ​ Expected maturities of investment securities may differ from contractual maturities because borrowers may have the right to prepay obligations with or without prepayment penalties. ​ The fair value of temporarily impaired investment securities, the amount of unrealized losses and the length of time these unrealized losses existed are as follows at the dates indicated (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Less than 12 months ​ 12 months or longer ​ Total ​ Estimated ​ ​ Estimated ​ ​ Estimated ​ ​ ​ ​ Fair ​ Unrealized ​ Fair ​ Unrealized ​ Fair ​ Unrealized March 31, 2022 ​ Value ​ Losses ​ Value ​ Losses ​ Value ​ Losses ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Available for sale: ​ ​ ​ ​ ​ ​ Municipal securities ​ $ 32,767 ​ $ (4,293) ​ $ 3,282 ​ $ (221) ​ $ 36,049 ​ $ (4,514) Agency securities ​ 22,288 ​ (1,565) ​ 16,414 ​ (1,579) ​ 38,702 ​ (3,144) Real estate mortgage investment conduits (1) ​ 17,334 ​ (1,310) ​ 15,275 ​ (1,537) ​ 32,609 ​ (2,847) Residential mortgage-backed securities (1) ​ 15,702 ​ (436) ​ — ​ — ​ 15,702 ​ (436) Other mortgage-backed securities (2) ​ 32,408 ​ (2,194) ​ 769 ​ (14) ​ 33,177 ​ (2,208) Total available for sale ​ $ 120,499 ​ $ (9,798) ​ $ 35,740 ​ $ (3,351) ​ $ 156,239 ​ $ (13,149) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Held to maturity: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Municipal securities ​ $ 5,911 ​ $ (816) ​ $ 3,036 ​ $ (606) ​ $ 8,947 ​ $ (1,422) Agency securities ​ ​ 35,930 ​ ​ (1,708) ​ ​ 6,897 ​ ​ (742) ​ ​ 42,827 ​ ​ (2,450) Real estate mortgage investment conduits (1) ​ ​ 26,233 ​ ​ (1,715) ​ ​ 7,735 ​ ​ (742) ​ ​ 33,968 ​ ​ (2,457) Residential mortgage-backed securities (1) ​ ​ 111,096 ​ ​ (7,160) ​ ​ 17,363 ​ ​ (1,723) ​ ​ 128,459 ​ ​ (8,883) Other mortgage-backed securities (3) ​ ​ 13,472 ​ ​ (1,153) ​ ​ 5,386 ​ ​ (706) ​ ​ 18,858 ​ ​ (1,859) Total held to maturity ​ $ 192,642 ​ $ (12,552) ​ $ 40,417 ​ $ (4,519) ​ $ 233,059 ​ $ (17,071) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Available for sale: ​ ​ ​ ​ ​ ​ Municipal securities ​ $ 17,529 ​ $ (555) ​ $ — ​ $ — ​ $ 17,529 ​ $ (555) Agency securities ​ ​ 23,306 ​ ​ (686) ​ ​ — ​ ​ — ​ ​ 23,306 ​ ​ (686) Real estate mortgage investment conduits (1) ​ 25,462 ​ ​ (480) ​ ​ — ​ ​ — ​ ​ 25,462 ​ ​ (480) Residential mortgage-backed securities (1) ​ 33,164 ​ (614) ​ — ​ ​ — ​ ​ 33,164 ​ (614) Other mortgage-backed securities (6) ​ 5,856 ​ ​ (125) ​ ​ 2,225 ​ ​ (51) ​ ​ 8,081 ​ ​ (176) Total available for sale ​ $ 105,317 ​ $ (2,460) ​ $ 2,225 ​ $ (51) ​ $ 107,542 ​ $ (2,511) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Held to maturity: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Municipal securities ​ $ 9,882 ​ $ (509) ​ $ — ​ $ — ​ $ 9,882 ​ $ (509) Agency securities ​ ​ 7,468 ​ ​ (220) ​ ​ — ​ ​ — ​ ​ 7,468 ​ ​ (220) Real estate mortgage investment conduits (4) ​ ​ 9,066 ​ ​ (141) ​ ​ — ​ ​ — ​ ​ 9,066 ​ ​ (141) Residential mortgage-backed securities (5) ​ ​ 6,035 ​ ​ (119) ​ ​ — ​ ​ — ​ ​ 6,035 ​ ​ (119) Other mortgage-backed securities (3) ​ ​ 5,748 ​ ​ (365) ​ ​ — ​ ​ — ​ ​ 5,748 ​ ​ (365) Total held to maturity ​ $ 38,199 ​ $ (1,354) ​ $ — ​ $ — ​ $ 38,199 ​ $ (1,354) ​ (1) Comprised of FHLMC, FNMA and GNMA issued securities. (2) Comprised of SBA and CRE secured securities iss ued by FHLMC and FNMA. (3) Comprised of CRE secured securities issued by FHLMC and FNMA . (4) Comprised of FNMA issued securities. (5) Comprised of FHLMC and FNMA issued securities. (6) Comprised of SBA issued securities. ​ The unrealized losses on the Company’s investment securities were primarily attributable to increases in market interest rates subsequent to their purchase by the Company. The Company expects the fair value of these securities to recover as the securities approach their maturity dates or sooner if market yields for such securities decline. The Company does not believe that these securities are other than temporarily impaired because of their credit quality or related to any issuer or industry specific event. Based on management’s evaluation and intent, the unrealized losses related to the investment securities in the above tables are considered temporary. ​ The Company had no sales and realized no gains or losses on sales of investment securities for both the year ended March 31, 2022 and 2021. Proceeds from the sale of investment securities totaled $17.8 million for the year ended March 31, 2020. Gross realized gains on sales of investment securities totaled $30,000 for the year ended March 31, 2020 and are included in other non-interest income in the accompanying consolidated statements of income. Investment securities available for sale with an amortized cost of $1.3 million and $5.3 million and a fair value of $1.2 million and $5.4 million at March 31, 2022 and 2021, respectively, were pledged as collateral for government public funds held by the Bank. Investment securities held to maturity with an amortized cost of $13.7 million and $3.1 million and a fair value of $12.6 million and $3.0 million at March 31, 2022 and 2021, respectively, were pledged as collateral for government public funds held by the Bank.

LOANS RECEIVABLE

LOANS RECEIVABLE	12 Months Ended
	Mar. 31, 2022
LOANS RECEIVABLE
LOANS RECEIVABLE	4 . LOANS RECEIVABLE Loans receivable are reported net of deferred loan fees and discounts, and inclusive of premiums. At March 31, 2022, deferred loan fees totaled $4.5 million of which $99,000 were related to the SBA’s Paycheck Protection Program (“PPP”) loans. At March 31, 2021, deferred loan fees totaled $6.6 million of which $2.7 million were related to SBA PPP loans. Loans receivable discounts and premiums totaled $371,000 and $2.4 million respectively, as of March 31, 2022, compared to $722,000 and $956,000 , respectively, as of March 31, 2021. Loans receivable, excluding loans held for sale, consisted of the following at the dates indicated (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ March 31, March 31, ​ ​ 2022 ​ 2021 Commercial and construction ​ ​ Commercial business (1) ​ $ 228,091 ​ $ 265,145 Commercial real estate ​ 582,837 ​ ​ 543,467 Land ​ 11,556 ​ ​ 14,040 Multi-family ​ 60,211 ​ ​ 45,014 Real estate construction ​ 24,160 ​ ​ 16,990 Total commercial and construction ​ 906,855 ​ ​ 884,656 ​ ​ ​ ​ ​ ​ ​ Consumer ​ ​ ​ ​ ​ Real estate one-to-four family ​ 82,006 ​ ​ 56,405 Other installment ​ 1,547 ​ ​ 2,174 Total consumer ​ 83,553 ​ ​ 58,579 ​ ​ ​ ​ ​ ​ ​ Total loans ​ 990,408 ​ ​ 943,235 ​ ​ ​ ​ ​ ​ ​ Less: Allowance for loan losses ​ 14,523 ​ ​ 19,178 Loans receivable, net ​ $ 975,885 ​ $ 924,057 ​ (1) SBA PPP loans totaled $3.1 million at March 31, 2022 and $93.4 million at March 31, 2021. The Company’s loan portfolio includes originated and purchased loans. Originated loans and purchased loans for which there was no evidence of credit deterioration at their acquisition date and for which it was probable that the Company would be able to collect all contractually required payments, are referred to collectively as “loans”. The Company originates commercial business, commercial real estate, land, multi-family real estate, real estate construction, residential real estate and other consumer loans. At March 31, 2022 and 2021, the Company had no loans to foreign domiciled businesses or foreign countries, or loans related to highly leveraged transactions. Substantially all of the mortgage loans in the Company’s loan portfolio are secured by properties located in Washington and Oregon, and accordingly, the ultimate collectability of a substantial portion of the Company’s loan portfolio is susceptible to changes in the local economic conditions in these markets. Loans and extensions of credit outstanding at one time to one borrower are generally limited by federal regulations to 15% of the Bank’s shareholders’ equity, excluding accumulated other comprehensive income (loss) (“AOCI”). The Company considers its loan portfolio to have very little exposure to sub-prime mortgage loans since the Company has not historically engaged in this type of lending. At March 31, 2022, loans carried at $567.7 million were pledged as collateral to the FHLB and FRB for borrowing arrangements. ​ Aggregate loans to officers and directors, all of which are current, consisted of the following for the periods indicated (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year Ended March 31, ​ 2022 2021 2020 Beginning balance ​ $ 5,308 ​ $ 625 ​ $ 778 Originations ​ 32 ​ 8,174 ​ 977 Principal repayments ​ (1,550) ​ (3,491) ​ (1,130) Ending balance ​ $ 3,790 ​ $ 5,308 ​ $ 625 ​ Loan segment risk characteristics – The Company considers its loan classes to be the same as its loan segments. The following are loan segment risk characteristics of the Company’s loan portfolio: Commercial business – Commercial business loans, other than SBA PPP loans, are primarily made based on the operating cash flows of the borrower or conversion of working capital assets to cash and secondarily on the underlying collateral provided by the borrower. The cash flows of borrowers may be volatile and the value of the collateral securing these loans may be difficult to measure. Most commercial business loans are secured by the assets being financed or other business assets such as accounts receivable or inventory and generally include a personal guarantee based on a review of personal financial statements. The Company will extend some short-term loans on an unsecured basis to highly qualified borrowers. Although commercial business loans are often collateralized by equipment, inventory, accounts receivable or other business assets, the liquidation of collateral in the event of a borrower default is often an insufficient source of repayment, because accounts receivable may be uncollectible and inventories and equipment may be obsolete or of limited use. Accordingly, the repayment of a commercial business loan depends primarily on the credit-worthiness of the borrower (and any guarantors), while the liquidation of collateral is a secondary and potentially insufficient source of repayment. The Company attempts to mitigate these risks by adhering to its underwriting policies in evaluating the management of the business and the credit-worthiness of the borrowers and the guarantors. Commercial real estate – The Company originates commercial real estate loans within its primary market areas secured by properties such as office buildings, warehouse/industrial, retail, assisted living, single purpose facilities, and other commercial properties. These are cash flow loans that share characteristics of both real estate and commercial business loans. The primary source of repayment is cash flow from the operation of the collateral property and secondarily through liquidation of the collateral. These loans are generally higher risk than other classifications of loans in that they typically involve higher loan amounts, are dependent on the management experience of the owners, and may be adversely affected by conditions in the real estate market or the economy. Owner-occupied commercial real estate loans are generally of lower credit risk than non-owner occupied commercial real estate loans as the borrowers’ businesses are likely dependent on the properties. Underwriting for these loans is primarily dependent on the repayment capacity derived from the operation of the occupying business rather than rents paid by third-parties. The Company attempts to mitigate these risks by generally limiting the maximum loan-to-value ratio to 65% - 80% depending on the property type and scrutinizing the financial condition of the borrower, the quality of the collateral and the management of the property securing the loan. Land – The Company has historically originated loans for the acquisition of raw land upon which the purchaser can then build or make improvements necessary to build or sell as improved lots. Currently, the Company is originating new land loans on a limited basis. Loans secured by undeveloped land or improved lots involve greater risks than one-to-four family residential mortgage loans because these loans are more difficult to evaluate. If the estimate of value proves to be inaccurate, in the event of default or foreclosure, the Company may incur a loss. The Company attempts to minimize this risk by generally limiting the maximum loan-to-value ratio on raw land loans to 65% and on improved land loans to 75% . Multi-family – The Company originates loans secured by multi-family dwelling units (more than four units). These loans involve a greater degree of risk than one-to-four family residential mortgage loans as these loans are usually greater in amount, dependent on the cash flow capacity of the project, and are more difficult to evaluate and monitor. Repayment of loans secured by multi-family properties typically depends on the successful operation and management of the properties. Consequently, repayment of such loans may be affected by adverse conditions in the real estate market or economy. The Company attempts to mitigate these risks by thoroughly evaluating the global financial condition of the borrower, the management experience of the borrower, and the quality of the collateral property securing the loan. Real estate construction – The Company originates construction loans for one-to-four family residential, multi-family, and commercial real estate properties. The one-to-four family residential construction loans include construction of consumer custom homes whereby the home buyer is the borrower as well as speculative and presold loans for home builders. Speculative one-to four-family construction loans are loans for which the home builder does not have, at the time of the loan origination, a signed contract with a home buyer who has a commitment for permanent financing with the Company or another lender for the finished home. The home buyer may be identified either during or after the construction period. Multi-family construction loans are originated to construct apartment buildings and condominium projects. Commercial construction loans are originated to construct properties such as office buildings, retail rental space and mini-storage facilities, and assisted living facilities. All construction loans are short-term and generally the rate is variable in nature. Construction lending can involve a higher level of risk than other types of lending because funds are advanced based on a prospective value of the project at completion, the total estimated construction cost of the project, and the borrowers’ equity at risk. Additionally, the repayment of the loan is conditional on the success of the ultimate project which is subject to interest rate changes, governmental regulations, general economic conditions and the ability of the borrower to sell or lease the property or refinance the indebtedness. If the Company’s estimate of the value of a project at completion proves to be overstated, it may have inadequate security for repayment of the loan and may incur a loss if the borrower does not repay the loan. Projects may also be jeopardized by disagreements between borrowers and builders and by the failure of builders to pay subcontractors. Loans to construct homes for which no purchaser has been identified carry more risk because the payoff for the loan depends on the builder’s ability to sell the property prior to the time that the construction loan is due. Although the nature of real estate construction loans is such that they are generally more difficult to evaluate and monitor, the Company attempts to closely monitor the construction project by on-site inspections. The Company also attempts to mitigate the risks of construction lending by adhering to its underwriting policies, disbursement procedures and monitoring practices. Real estate one-to-four family – The Company originates both fixed-rate and adjustable-rate loans secured by one- to-four family residences located in its primary market areas. The majority of the fixed-rate one-to-four family loans are sold in the secondary market for asset/liability management purposes and to generate non-interest income. The Company’s lending policies generally limit the maximum loan-to-value on one-to-four family loans to 80% of the lesser of the appraised value or the purchase price. However, the Company usually obtains private mortgage insurance on the portion of the principal amount that exceeds 80% of the appraised value of the property. Terms of maturity typically range from 15 to 30 years . The Company also originates home equity lines of credit and second mortgage loans. Home equity lines of credit and second mortgage loans have a greater credit risk than one-to-four family residential mortgage loans because they are secured by mortgages subordinated to the existing first mortgage on the property, which may or may not be held by the Company. The Company attempts to mitigate residential lending risks by adhering to its underwriting policies in evaluating the collateral and the credit-worthiness of the borrower. Other installment – The Company originates other consumer loans, which include automobile, boat, motorcycle, recreational vehicle, savings account and unsecured loans. Other consumer loans generally have shorter terms to maturity than mortgage loans. Other consumer loans generally involve a greater degree of risk than do residential mortgage loans, particularly in the case of consumer loans that are unsecured or secured by rapidly depreciating assets such as automobiles. In such cases, any repossessed collateral for a defaulted consumer loan may not provide an adequate source of repayment of the outstanding loan balance as a result of the greater likelihood of damage, loss or depreciation. The Company attempts to mitigate these risks by adhering to its underwriting policies in evaluating the credit-worthiness of the borrower.

ALLOWANCE FOR LOAN LOSSES

ALLOWANCE FOR LOAN LOSSES	12 Months Ended
	Mar. 31, 2022
ALLOWANCE FOR LOAN LOSSES
ALLOWANCE FOR LOAN LOSSES	​ ​ 5. ALLOWANCE FOR LOAN LOSSES The following tables present a reconciliation of the allowance for loan losses for the periods indicated (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial Commercial ​ ​ Multi- Real Estate ​ ​ ​ ​ ​ ​ March 31, 2022 ​ Business ​ Real Estate ​ Land ​ Family ​ Construction ​ Consumer ​ Unallocated ​ Total ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Beginning balance ​ $ 2,416 ​ $ 14,089 ​ $ 233 ​ $ 638 ​ $ 294 ​ $ 852 ​ $ 656 ​ $ 19,178 Provision for (recapture of) loan losses ​ 75 ​ ​ (5,052) ​ ​ (65) ​ ​ 207 ​ ​ 99 ​ ​ 52 ​ ​ 59 ​ ​ (4,625) Charge-offs ​ (69) ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ (17) ​ ​ — ​ ​ (86) Recoveries ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ 56 ​ ​ — ​ ​ 56 Ending balance ​ $ 2,422 ​ $ 9,037 ​ $ 168 ​ $ 845 ​ $ 393 ​ $ 943 ​ $ 715 ​ $ 14,523 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Beginning balance ​ $ 2,008 ​ $ 6,421 ​ $ 230 ​ $ 854 ​ $ 1,149 ​ $ 1,363 ​ $ 599 ​ $ 12,624 Provision for (recapture of) loan losses ​ 398 ​ 7,336 ​ 3 ​ (216) ​ (855) ​ (423) ​ 57 ​ 6,300 Charge-offs ​ — ​ — ​ — ​ — ​ — ​ (124) ​ — ​ (124) Recoveries ​ 10 ​ 332 ​ — ​ — ​ — ​ 36 ​ — ​ 378 Ending balance ​ $ 2,416 ​ $ 14,089 ​ $ 233 ​ $ 638 ​ $ 294 ​ $ 852 ​ $ 656 ​ $ 19,178 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2020 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Beginning balance ​ $ 1,808 ​ $ 5,053 ​ $ 254 ​ $ 728 ​ $ 1,457 ​ $ 1,447 ​ $ 710 ​ $ 11,457 Provision for (recapture of) loan losses ​ 264 ​ 1,368 ​ (24) ​ 126 ​ (308) ​ (65) ​ (111) ​ 1,250 Charge-offs ​ (64) ​ — ​ — ​ — ​ — ​ (82) ​ — ​ (146) Recoveries ​ — ​ — ​ — ​ — ​ — ​ 63 ​ — ​ 63 Ending balance ​ $ 2,008 ​ $ 6,421 ​ $ 230 ​ $ 854 ​ $ 1,149 ​ $ 1,363 ​ $ 599 ​ $ 12,624 ​ The following tables present an analysis of loans receivable and the allowance for loan losses, based on impairment methodology, at the dates indicated (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Allowance for Loan Losses ​ Recorded Investment in Loans ​ Individually Collectively ​ ​ Individually Collectively ​ ​ ​ ​ Evaluated ​ Evaluated ​ ​ ​ ​ Evaluated ​ Evaluated ​ ​ ​ ​ ​ for ​ for ​ ​ ​ ​ for ​ for ​ ​ ​ March 31, 2022 ​ Impairment ​ Impairment ​ Total ​ Impairment ​ Impairment ​ Total ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial business ​ $ — ​ $ 2,422 ​ $ 2,422 ​ $ 100 ​ $ 227,991 ​ $ 228,091 Commercial real estate ​ — ​ 9,037 ​ ​ 9,037 ​ ​ 122 ​ ​ 582,715 ​ ​ 582,837 Land ​ — ​ 168 ​ ​ 168 ​ ​ — ​ ​ 11,556 ​ ​ 11,556 Multi-family ​ — ​ 845 ​ ​ 845 ​ ​ — ​ ​ 60,211 ​ ​ 60,211 Real estate construction ​ — ​ 393 ​ ​ 393 ​ ​ — ​ ​ 24,160 ​ ​ 24,160 Consumer ​ 8 ​ 935 ​ ​ 943 ​ ​ 495 ​ ​ 83,058 ​ ​ 83,553 Unallocated ​ — ​ 715 ​ ​ 715 ​ ​ — ​ ​ — ​ ​ — Total ​ $ 8 ​ $ 14,515 ​ $ 14,523 ​ $ 717 ​ $ 989,691 ​ $ 990,408 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial business ​ $ — ​ $ 2,416 ​ $ 2,416 ​ $ 120 ​ $ 265,025 ​ $ 265,145 Commercial real estate ​ — ​ 14,089 ​ 14,089 ​ 1,468 ​ 541,999 ​ 543,467 Land ​ — ​ 233 ​ 233 ​ 710 ​ 13,330 ​ 14,040 Multi-family ​ — ​ 638 ​ 638 ​ 753 ​ 44,261 ​ 45,014 Real estate construction ​ — ​ 294 ​ 294 ​ — ​ 16,990 ​ 16,990 Consumer ​ 11 ​ 841 ​ 852 ​ 530 ​ 58,049 ​ 58,579 Unallocated ​ — ​ 656 ​ 656 ​ — ​ — ​ — Total ​ $ 11 ​ $ 19,167 ​ $ 19,178 ​ $ 3,581 ​ $ 939,654 ​ $ 943,235 ​ Changes in the allowance for unfunded loan commitments were as follows for the years indicated (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year Ended March 31, ​ 2022 2021 2020 Beginning balance ​ $ 509 ​ $ 474 ​ $ 469 Net change in allowance for unfunded loan commitments ​ (85) ​ 35 ​ 5 Ending balance ​ $ 424 ​ $ 509 ​ $ 474 ​ The following tables present an analysis of loans by aging category at the dates indicated (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Total ​ ​ ​ ​ ​ ​ ​ ​ ​ 90 Days ​ ​ ​ ​ Past ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ and ​ ​ ​ ​ Due and ​ ​ ​ ​ Total ​ ​ 30-89 Days ​ Greater ​ ​ ​ ​ Non- ​ ​ ​ ​ Loans March 31, 2022 ​ Past Due ​ Past Due ​ Non-accrual ​ accrual ​ Current ​ Receivable ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial business ​ $ 7,753 ​ $ 21,808 ​ $ 118 ​ $ 29,679 ​ $ 198,412 ​ $ 228,091 Commercial real estate ​ — ​ — ​ 122 ​ ​ 122 ​ ​ 582,715 ​ ​ 582,837 Land ​ — ​ — ​ — ​ ​ — ​ ​ 11,556 ​ ​ 11,556 Multi-family ​ — ​ — ​ — ​ ​ — ​ ​ 60,211 ​ ​ 60,211 Real estate construction ​ 291 ​ — ​ — ​ ​ 291 ​ ​ 23,869 ​ ​ 24,160 Consumer ​ 9 ​ — ​ 51 ​ ​ 60 ​ ​ 83,493 ​ ​ 83,553 Total ​ $ 8,053 ​ $ 21,808 ​ $ 291 ​ $ 30,152 ​ $ 960,256 ​ $ 990,408 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial business ​ $ 98 ​ $ 175 ​ $ 182 ​ $ 455 ​ $ 264,690 ​ $ 265,145 Commercial real estate ​ — ​ — ​ 144 ​ 144 ​ 543,323 ​ 543,467 Land ​ — ​ — ​ — ​ — ​ 14,040 ​ 14,040 Multi-family ​ — ​ — ​ — ​ — ​ 45,014 ​ 45,014 Real estate construction ​ — ​ — ​ — ​ — ​ 16,990 ​ 16,990 Consumer ​ 143 ​ 1 ​ 69 ​ 213 ​ 58,366 ​ 58,579 Total ​ $ 241 ​ $ 176 ​ $ 395 ​ $ 812 ​ $ 942,423 ​ $ 943,235 ​ A substantial portion of the 30-89 days past due and 90 days and greater past due loans at March 31, 2022 are comprised of government guaranteed loans. These government guaranteed loans are pass rated loans and are not considered to be nonaccrual loans given the Company expects to receive all principal and interest and not considered to be classified loans because there are no well-defined weaknesses or risk of loss. Given these government guaranteed loans are neither nonaccrual loans nor classified loans, these loans are not considered to be impaired loans based on the Company’s policy. Given these loans are not considered to be impaired loans and are fully guaranteed by the SBA or USDA, these loans are omitted from the required allowance calculation. Interest income foregone on non-accrual loans was $24,000 , $49,000 and $75,000 for the years ended March 31, 2022, 2021 and 2020, respectively. Credit quality indicators – The Company monitors credit risk in its loan portfolio using a risk rating system (on a scale of one to nine) for all commercial (non-consumer) loans. The risk rating system is a measure of the credit risk of the borrower based on their historical, current and anticipated future financial characteristics. The Company assigns a risk rating to each commercial loan at origination and subsequently updates these ratings, as necessary, so that the risk rating continues to reflect the appropriate risk characteristics of the loan. Application of appropriate risk ratings is key to management of loan portfolio risk. In determining the appropriate risk rating, the Company considers the following factors: delinquency, payment history, quality of management, liquidity, leverage, earnings trends, alternative funding sources, geographic risk, industry risk, cash flow adequacy, account practices, asset protection and extraordinary risks. Consumer loans, including custom construction loans, are not assigned a risk rating but rather are grouped into homogeneous pools with similar risk characteristics. When a consumer loan is delinquent 90 days, it is placed on non-accrual status and assigned a substandard risk rating. Loss factors are assigned to each risk rating and homogeneous pool based on historical loss experience for similar loans. This historical loss experience is adjusted for qualitative factors that are likely to cause the estimated credit losses to differ from the Company’s historical loss experience. The Company uses these loss factors to estimate the general component of its allowance for loan losses. Pass – These loans have a risk rating between 1 and 4 and are to borrowers that meet normal credit standards. Any deficiencies in satisfactory asset quality, liquidity, debt servicing capacity and coverage are offset by strengths in other areas. The borrower currently has the capacity to perform according to the loan terms. Any concerns about risk factors such as stability of margins, stability of cash flows, liquidity, dependence on a single product/supplier/customer, depth of management, etc. are offset by strengths in other areas. Typically, these loans are secured by the operating assets of the borrower and/or real estate. The borrower’s management is considered competent. The borrower has the ability to repay the debt in the normal course of business. Watch – These loans have a risk rating of 5 and are included in the “pass” rating. However, there would typically be some reason for additional management oversight, such as the borrower’s recent financial setbacks and/or deteriorating financial position, industry concerns and failure to perform on other borrowing obligations. Loans with this rating are monitored closely in an effort to correct deficiencies. Special mention – These loans have a risk rating of 6 and are rated in accordance with regulatory guidelines. These loans have potential weaknesses that deserve management’s close attention. If left uncorrected, these potential weaknesses may result in deterioration of the repayment prospects for the loan or in the credit position at some future date. These loans pose elevated risk but their weakness does not yet justify a “substandard” classification. Substandard – These loans have a risk rating of 7 and are rated in accordance with regulatory guidelines, for which the accrual of interest may or may not be discontinued. By definition under regulatory guidelines, a “substandard” loan has defined weaknesses which make payment default or principal exposure likely but not yet certain. Repayment of such loans is likely to be dependent upon collateral liquidation, a secondary source of repayment, or an event outside of the normal course of business. Doubtful – These loans have a risk rating of 8 and are rated in accordance with regulatory guidelines. Such loans are placed on non-accrual status and repayment may be dependent upon collateral which has value that is difficult to determine or upon some near-term event which lacks certainty. Loss – These loans have a risk rating of 9 and are rated in accordance with regulatory guidelines. Such loans are charged-off or charged-down when payment is acknowledged to be uncertain or when the timing or value of payments cannot be determined. “Loss” is not intended to imply that the loan or some portion of it will never be paid, nor does it in any way imply that there has been a forgiveness of debt. The following tables present an analysis of loans by credit quality indicators at the dates indicated (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Total ​ ​ ​ ​ ​ Special ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Loans March 31, 2022 ​ Pass ​ Mention ​ Substandard ​ Doubtful ​ Loss ​ Receivable ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial business ​ $ 227,435 ​ $ 511 ​ $ 145 ​ $ — ​ $ — ​ $ 228,091 Commercial real estate ​ 569,417 ​ ​ 7,211 ​ ​ 6,209 ​ — ​ — ​ 582,837 Land ​ 11,556 ​ ​ — ​ ​ — ​ — ​ — ​ 11,556 Multi-family ​ 60,138 ​ ​ 73 ​ ​ — ​ — ​ — ​ 60,211 Real estate construction ​ 24,160 ​ ​ — ​ ​ — ​ — ​ — ​ 24,160 Consumer ​ 83,502 ​ ​ — ​ ​ 51 ​ — ​ — ​ 83,553 Total ​ $ 976,208 ​ $ 7,795 ​ $ 6,405 ​ $ — ​ $ — ​ $ 990,408 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial business ​ $ 264,564 ​ $ 399 ​ $ 182 ​ $ — ​ $ — ​ $ 265,145 Commercial real estate ​ 494,010 ​ ​ 42,045 ​ ​ 7,412 ​ — ​ — ​ 543,467 Land ​ 14,040 ​ ​ — ​ ​ — ​ — ​ — ​ 14,040 Multi-family ​ 44,941 ​ ​ 49 ​ ​ 24 ​ — ​ — ​ 45,014 Real estate construction ​ 16,990 ​ ​ — ​ ​ — ​ — ​ — ​ 16,990 Consumer ​ 58,510 ​ ​ — ​ ​ 69 ​ — ​ — ​ 58,579 Total ​ $ 893,055 ​ $ 42,493 ​ $ 7,687 ​ $ — ​ $ — ​ $ 943,235 ​ Impaired loans – The following tables present information regarding impaired loans at the dates and for the years indicated (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Recorded Recorded ​ ​ ​ ​ ​ ​ ​ ​ Investment ​ Investment ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ with ​ with ​ ​ ​ ​ ​ ​ ​ Related ​ ​ No Specific ​ Specific ​ Total ​ Unpaid ​ Specific ​ ​ Valuation ​ Valuation ​ Recorded ​ Principal ​ Valuation March 31, 2022 ​ Allowance ​ Allowance ​ Investment ​ Balance ​ Allowance ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial business ​ $ 100 ​ $ — ​ $ 100 ​ $ 143 ​ $ — Commercial real estate ​ 122 ​ ​ — ​ ​ 122 ​ ​ 178 ​ — Land ​ — ​ ​ — ​ ​ — ​ ​ — ​ — Multi-family ​ — ​ ​ — ​ ​ — ​ ​ — ​ — Consumer ​ 259 ​ ​ 236 ​ ​ 495 ​ ​ 603 ​ 8 Total ​ $ 481 ​ $ 236 ​ $ 717 ​ $ 924 ​ $ 8 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial business ​ $ 120 ​ $ — ​ $ 120 ​ $ 157 ​ $ — Commercial real estate ​ 1,468 ​ ​ — ​ ​ 1,468 ​ ​ 1,556 ​ — Land ​ 710 ​ ​ — ​ ​ 710 ​ ​ 740 ​ — Multi-family ​ 753 ​ ​ — ​ ​ 753 ​ ​ 856 ​ — Consumer ​ 278 ​ ​ 252 ​ ​ 530 ​ ​ 643 ​ 11 Total ​ $ 3,329 ​ $ 252 ​ $ 3,581 ​ $ 3,952 ​ $ 11 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year ended ​ Year ended ​ Year ended ​ ​ March 31, 2022 ​ March 31, 2021 ​ March 31, 2020 ​ ​ ​ Interest ​ ​ Interest ​ ​ Interest ​ ​ ​ ​ ​ Recognized ​ ​ ​ ​ Recognized ​ ​ ​ ​ Recognized ​ ​ Average ​ on ​ Average ​ on ​ Average ​ on ​ ​ Recorded ​ Impaired ​ Recorded ​ Impaired ​ Recorded ​ Impaired ​ ​ Investment Loans ​ Investment Loans ​ Investment Loans ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial business ​ $ 110 ​ $ — ​ $ 130 ​ $ — ​ $ 150 ​ $ 62 Commercial real estate ​ 660 ​ ​ 16 ​ ​ 2,008 ​ ​ 61 ​ ​ 2,420 ​ ​ 40 Land ​ — ​ ​ — ​ ​ 713 ​ ​ 40 ​ ​ 720 ​ ​ 90 Multi-family ​ — ​ ​ — ​ ​ 1,313 ​ ​ 77 ​ ​ 1,573 ​ ​ — Consumer ​ 514 ​ ​ 24 ​ ​ 494 ​ ​ 29 ​ ​ 494 ​ ​ 29 Total ​ $ 1,284 ​ $ 40 ​ $ 4,658 ​ $ 207 ​ $ 5,357 ​ $ 221 ​ The cash basis interest income on impaired loans was not materially different than the interest recognized on impaired loans as shown in the above tables. TDRs and other loan modifications – TDRs are loans for which the Company, for economic or legal reasons related to the borrower’s financial condition, has granted a concession to the borrower that it would otherwise not consider. A TDR typically involves a modification of terms such as a reduction of the stated interest rate or face amount of the loan, a reduction of accrued interest, and/or an extension of the maturity date(s) at a stated interest rate lower than the current market rate for a new loan with similar risk. TDRs are considered impaired loans and as such, impairment is measured as described for impaired loans in Note 1 – Summary of Significant Accounting Policies – Allowance for Loan Losses. ​ ​ The following table presents TDRs by interest accrual status at the dates indicated (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2022 ​ March 31, 2021 ​ Accrual Nonaccrual Total Accrual Nonaccrual Total ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial business ​ $ — ​ $ 100 ​ $ 100 ​ $ — ​ $ 120 ​ $ 120 Commercial real estate ​ — ​ ​ 122 ​ ​ 122 ​ 1,324 ​ ​ 144 ​ ​ 1,468 Land ​ — ​ ​ — ​ ​ — ​ 710 ​ ​ — ​ ​ 710 Multi-family ​ — ​ ​ — ​ ​ — ​ 753 ​ ​ — ​ ​ 753 Consumer ​ 495 ​ ​ — ​ ​ 495 ​ 530 ​ ​ — ​ ​ 530 Total ​ $ 495 ​ $ 222 ​ $ 717 ​ $ 3,317 ​ $ 264 ​ $ 3,581 ​ At March 31, 2022, the Company had no commitments to lend additional funds on these loans. At March 31, 2022, all of the Company’s TDRs were paying as agreed. There were no new TDRs for the year ended March 31, 2022. There was one new TDR for the year ended March 31, 2021. This TDR is a consumer real estate loan secured by a one-to-four family property located in Northwest Oregon where the Company granted a deferral of principal, interest, and escrow payments. The recorded investment in the loan prior to modification and at March 31, 2021 was $129,000 . In March 2020, the Company began offering short-term loan modifications to assist borrowers during the COVID-19 pandemic. The CARES Act along with a joint agency statement issued by banking regulatory agencies provides that a short-term modification made in response to COVID-19 and which meets certain criteria does not need to be accounted for as a TDR. Accordingly, the Company does not account for such loan modifications as TDRs. Loan modifications in accordance with the CARES Act are still subject to an impairment evaluation. See Note 1 - Summary of Significant Accounting Policies for more information .

PREMISES AND EQUIPMENT

PREMISES AND EQUIPMENT	12 Months Ended
	Mar. 31, 2022
PREMISES AND EQUIPMENT
PREMISES AND EQUIPMENT	6. PREMISES AND EQUIPMENT Premises and equipment consisted of the following at the dates indicated (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, ​ ​ 2022 ​ 2021 ​ ​ ​ ​ ​ ​ ​ Land $ 4,714 $ 5,247 Buildings and improvements ​ 17,030 ​ 18,097 Leasehold improvements ​ 3,998 ​ 3,123 Furniture and equipment ​ 10,765 ​ 10,734 Construction in progress ​ — ​ 32 Total ​ 36,507 ​ 37,233 Less accumulated depreciation and amortization ​ (19,341) ​ (19,409) Premises and equipment, net ​ $ 17,166 ​ $ 17,824 ​ Depreciation and amortization expense was $1.5 million, $1.4 million and $1.3 million for the years ended March 31, 2022, 2021 and 2020, respectively .

GOODWILL

GOODWILL	12 Months Ended
	Mar. 31, 2022
GOODWILL
GOODWILL	7. GOODWILL Goodwill and certain other intangibles generally arise from business combinations accounted for under the purchase method of accounting. Goodwill and other intangibles deemed to have indefinite lives generated from business combinations are not subject to amortization and are instead tested for impairment not less than annually. The Company has two reporting units, the Bank and the Trust Company, for purposes of evaluating goodwill for impairment. All of the Company’s goodwill has been allocated to the Bank reporting unit. ​ The Company performed its annual impairment assessment as of October 31, 2021 and determined that no impairment of goodwill exists. The goodwill impairment test involves a two-step process. The first step is a comparison of the reporting unit’s fair value to its carrying value. If the reporting unit’s fair value is less than its carrying value, the Company would be required to progress to the second step. In the second step, the Company calculates the implied fair value of goodwill and compares the implied fair value of goodwill to the carrying amount of goodwill in the Company’s consolidated balance sheet. If the carrying amount of the goodwill is greater than the implied fair value of that goodwill, an impairment loss must be recognized in an amount equal to that excess. The implied fair value of goodwill is determined in the same manner as goodwill recognized in a business combination. The results of the Company’s step one test indicated that the reporting unit’s fair value was greater than its carrying value, and, therefore, a step two analysis was not required; however, no assurance can be given that the Company’s goodwill will not be written down in future periods. As a result of the effects of the COVID-19 pandemic and its impacts on the financial markets and economy, the Company completed a qualitative assessment of goodwill as of March 31, 2022, and concluded that it is more likely than not that the fair value of the Bank (the reporting unit), exceeds its carrying value. If adverse economic conditions or decreases in the Company’s common stock price and market capitalization as a result of the COVID-19 pandemic were deemed sustained in the future rather than temporary, it may significantly affect the fair value of the reporting unit and may trigger future goodwill impairment charges. Any impairment charge could have a material adverse effect on our results of operations and financial condition.

DEPOSITS

DEPOSITS	12 Months Ended
	Mar. 31, 2022
DEPOSITS
DEPOSITS	8. DEPOSITS Deposit accounts consisted of the following at the dates indicated (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, March 31, Account Type ​ 2022 ​ 2021 Non-interest-bearing ​ $ 494,831 ​ $ 435,098 Interest-bearing checking ​ 287,861 ​ 258,014 Money market ​ 299,738 ​ 240,554 Savings accounts ​ 340,076 ​ 291,769 Certificates of deposit ​ 111,372 ​ 120,625 Total ​ $ 1,533,878 ​ $ 1,346,060 ​ Individual certificates of deposit in amounts of $250,000 or more totaled $32.7 million and $31.7 million at March 31, 2022 and 2021, respectively. Scheduled maturities of certificates of deposit for future years ending March 31 are as follows (in thousands): ​ ​ ​ ​ ​ Year Ending March 31, : ​ 2023 ​ $ 77,179 2024 ​ 19,519 2025 ​ 9,951 2026 ​ 767 2027 ​ 2,913 Thereafter ​ 1,043 Total ​ $ 111,372 ​ Interest expense by deposit type was as follows for the years indicated (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year Ended March 31, ​ 2022 2021 2020 Interest-bearing checking ​ $ 87 ​ $ 85 ​ $ 100 Money market ​ 150 ​ 153 ​ 229 Savings accounts ​ 247 ​ 418 ​ 1,054 Certificates of deposit ​ 940 ​ 1,888 ​ 1,507 Total ​ $ 1,424 ​ $ 2,544 ​ $ 2,890 ​

JUNIOR SUBORDINATED DEBENTURES

JUNIOR SUBORDINATED DEBENTURES	12 Months Ended
	Mar. 31, 2022
JUNIOR SUBORDINATED DEBENTURES
JUNIOR SUBORDINATED DEBENTURES	9. JUNIOR SUBORDINATED DEBENTURES The Company has wholly-owned subsidiary grantor trusts that were established for the purpose of issuing trust preferred securities and common securities. The trust preferred securities accrue and pay distributions periodically at specified annual rates as provided in each trust agreement. The trusts used the net proceeds from each of the offerings to purchase a like amount of junior subordinated debentures (the “Debentures”) of the Company. The Debentures are the sole assets of the trusts. The Company’s obligations under the Debentures and related documents, taken together, constitute a full and unconditional guarantee by the Company of the obligations of the trusts. The trust preferred securities are mandatorily redeemable upon maturity of the Debentures or upon earlier redemption as provided in the indentures. The Company has the right to redeem the Debentures in whole or in part on or after specific dates, at a redemption price specified in the indentures governing the Debentures plus any accrued but unpaid interest to the redemption date. The Company also has the right to defer the payment of interest on each of the Debentures for a period not to exceed 20 consecutive quarters, provided that the deferral period does not extend beyond the stated maturity. During such deferral period, distributions on the corresponding trust preferred securities will also be deferred and the Company may not pay cash dividends to the holders of shares of the Company’s common stock. The Debentures issued by the Company to the grantor trusts, totaling $26.8 million and $26.7 million at March 31, 2022 and 2021, respectively, are reported as “junior subordinated debentures” in the consolidated balance sheets. The common securities issued by the grantor trusts were purchased by the Company, and the Company’s investment in the common securities of $836,000 at both March 31, 2022 and 2021, is included in prepaid expenses and other assets in the consolidated balance sheets. The Company records interest expense on the Debentures in the consolidated statements of income. The following table is a summary of the terms and the amounts outstanding of the Debentures at March 31, 2022 (dollars in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Issuance Trust Issuance Date Amount Outstanding Rate Type Initial Rate Current Rate Maturity Date ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Riverview Bancorp Statutory Trust I 12/2005 ​ $ 7,217 Variable (1) 5.88 % 2.19 % 3/2036 Riverview Bancorp Statutory Trust II 06/2007 ​ 15,464 Variable (2) 7.03 % 2.18 % 9/2037 Merchants Bancorp Statutory Trust I (4) 06/2003 ​ 5,155 Variable (3) 4.16 % 4.07 % 6/2033 ​ ​ ​ ​ 27,836 ​ ​ ​ ​ ​ ​ ​ ​ Fair value adjustment (4) ​ ​ ​ (1,003) Total Debentures ​ ​ ​ $ 26,833 ​ (1) The trust preferred securities reprice quarterly based on the three-month LIBOR plus 1.36% . (2) The trust preferred securities reprice quarterly based on the three-month LIBOR plus 1.35% . (3) The trust preferred securities reprice quarterly based on the three-month LIBOR plus 3.10 % . (4) Amount, net of accretion, attributable to a prior year’s business combination.

INCOME TAXES

INCOME TAXES	12 Months Ended
	Mar. 31, 2022
INCOME TAXES
INCOME TAXES	10. INCOME TAXES Provision for income taxes consisted of the following for the periods indicated (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year Ended March 31 ​ 2022 2021 2020 Current ​ $ 5,446 ​ $ 4,410 ​ $ 5,404 Deferred ​ 1,010 ​ (1,429) ​ (574) Total ​ $ 6,456 ​ $ 2,981 ​ $ 4,830 ​ The tax effects of temporary differences that give rise to significant portions of deferred tax assets and deferred tax liabilities are as follows at the dates indicated (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, March 31, ​ 2022 2021 Deferred tax assets: ​ ​ ​ ​ ​ ​ Deferred compensation ​ $ 57 ​ $ 75 Allowance for loan losses ​ 3,588 ​ 4,725 Accrued expenses ​ 170 ​ 212 Accumulated depreciation and amortization ​ 881 ​ 862 Deferred gain on sale ​ 52 ​ 90 Deferred income ​ ​ 107 ​ ​ — Purchase accounting ​ 74 ​ 101 Net unrealized loss on investment securities available for sale ​ 3,141 ​ 50 Operating lease liabilities ​ ​ 1,993 ​ ​ 2,204 Other ​ 420 ​ 412 Total deferred tax assets ​ 10,483 ​ 8,731 Deferred tax liabilities: ​ ​ FHLB stock dividend ​ (38) ​ (38) Prepaid expenses ​ (171) ​ (214) Operating lease ROU assets ​ ​ (1,898) ​ ​ (2,108) Loan fees/costs ​ (875) ​ (952) Total deferred tax liabilities ​ (2,982) ​ (3,312) Deferred tax assets, net ​ $ 7,501 ​ $ 5,419 ​ A reconciliation of the Company’s effective income tax rate with the federal statutory tax rate is as follows for the years indicated: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year Ended March 31, ​ ​ 2022 2021 2022 ​ Statutory federal income tax rate 21.0 % 21.0 % 21.0 % State and local income tax rate 3.0 3.0 3.0 ​ ESOP market value adjustment (0.1) (0.1) (0.1) ​ BOLI (0.7) (1.5) (1.0) ​ Other, net (0.4) (0.3) 0.6 ​ Effective federal income tax rate 22.8 % 22.1 % 23.5 % ​ For the fiscal years ended March 31, 2022 and 2021, the Company utilized a federal corporate income tax rate of 21.0% . The Bank’s retained earnings at March 31, 2022 and 2021 include a base year allowance for loan losses, which amounted to $2.2 million, for which no federal income tax liability has been recognized. The related unrecognized deferred tax liability at March 31, 2022 and 2021 was $528,000 . This represents the balance of the allowance for loan losses created for tax purposes as of December 31, 1987. This amount is subject to recapture in the unlikely event that the Company’s banking subsidiaries (1) make distributions in excess of current and accumulated earnings and profits, as calculated for federal tax purposes, (2) redeem their stock, or (3) liquidate. Management does not expect this temporary difference to reverse in the foreseeable future. At March 31, 2022 and 2021, the Company had no unrecognized tax benefits or uncertain tax positions. In addition, the Company had no accrued interest or penalties related to income tax matters as of March 31, 2022 and 2021. It is the Company’s policy to recognize potential accrued interest and penalties related to income tax matters as a component of the provision for income taxes. The Company is subject to U.S federal and State of Oregon income taxes. The years 2019 to 2021 remain open to examination for federal income taxes, and the years 2018 to 2021 remain open to State of Oregon examination .

EMPLOYEE BENEFIT PLANS

EMPLOYEE BENEFIT PLANS	12 Months Ended
	Mar. 31, 2022
EMPLOYEE BENEFIT PLANS
EMPLOYEE BENEFIT PLANS	11. EMPLOYEE BENEFIT PLANS Retirement Plan – The Riverview Bancorp, Inc. Employees’ Savings and Profit Sharing Plan (the “Plan”) is a defined contribution profit-sharing plan incorporating the provisions of Section 401(k) of the Internal Revenue Code. Company expenses related to the Plan for the years ended March 31, 2022, 2021 and 2020 were $529,000 , $525,000 and $561,000 , respectively. Directors’ and Executive Officers’ Deferred Compensation Plan (“Deferred Compensation Plan”) – The Deferred Compensation Plan is a nonqualified deferred compensation plan. Directors may elect to defer their monthly directors’ fees until retirement with no income tax payable by the director until retirement benefits are received. The Chairman, President, and Executive and Senior Vice Presidents of the Company may also defer salary into the Deferred Compensation Plan. The Company accrues annual interest on the unfunded liability under the Deferred Compensation Plan based upon a formula relating to gross revenues, which was 2.97% , 3.61% and 4.46% for the years ended March 31, 2022, 2021 and 2020, respectively. The estimated liability under the Deferred Compensation Plan is accrued as earned by the participants. At March 31, 2022 and 2021, the Company’s aggregate liability under the Deferred Compensation Plan was $237,000 and $312,000 , respectively, which is recorded in accrued expenses and other liabilities in the accompanying consolidated balance sheets. Stock Option Plans – In July 2003, shareholders of the Company approved the adoption of the 2003 Stock Option Plan (“2003 Plan”). The 2003 Plan was effective in July 2003 and expired in July 2013. Accordingly, no further option awards may be granted under the 2003 Plan; however, any awards granted prior to their respective expiration dates remain outstanding subject to their terms. Each option granted under the 2003 Plan has an exercise price equal to the fair market value of the Company’s common stock on the date of the grant, a maximum term of ten years and a vesting period from zero to five years . In July 2017, the shareholders of the Company approved the Riverview Bancorp, Inc. 2017 Equity Incentive Plan (“2017 Plan”). The 2017 Plan provides for the grant of incentive stock options, non-qualified stock options, restricted stock and restricted stock units. The Company has reserved 1,800,000 shares of its common stock for issuance under the 2017 Plan. The 2003 Plan and the 2017 Plan are collectively referred to as “the Stock Option Plans.” The fair value of each stock option granted is estimated on the date of grant using the Black-Scholes stock option valuation model. The fair value of all awards is amortized on a straight-line basis over the requisite service periods, which are generally the vesting periods. The expected life of options granted represents the period of time that they are expected to be outstanding. The expected life is determined based on historical experience with similar options, giving consideration to the contractual terms and vesting schedules. Expected volatility is estimated at the date of grant based on the historical volatility of the Company’s common stock. Expected dividends are based on dividend trends and the market value of the Company’s common stock at the time of grant. The risk-free interest rate for periods within the contractual life of the options is based on the U.S. Treasury yield curve in effect at the time of the grant. There were no stock options granted during the years ended March 31, 2022, 2021 and 2020 under the Stock Option Plans. As of March 31, 2022, all outstanding stock options were fully vested and there was no remaining unrecognized compensation expense related to stock options granted under the Stock Option Plans. There was no stock-based compensation expense related to stock options for the years ended March 31, 2022, 2021 and 2020 under the Stock Option Plans. ​ The following table presents the activity related to stock options under the Stock Option Plans for the years indicated: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year Ended March 31, ​ 2022 ​ 2021 ​ 2020 ​ ​ Weighted ​ Weighted ​ Weighted ​ ​ ​ ​ Average ​ ​ ​ Average ​ ​ ​ Average ​ ​ Number of ​ Exercise ​ Number of ​ Exercise ​ Number of ​ Exercise ​ Shares Price Shares Price Shares Price Balance, beginning of period 23,332 ​ $ 2.78 43,332 ​ $ 2.69 101,332 ​ $ 3.26 Options exercised (6,000) ​ 2.78 (20,000) ​ 2.58 (58,000) ​ 3.69 Balance, end of period 17,332 ​ $ 2.78 23,332 ​ $ 2.78 43,332 ​ $ 2.69 ​ Additional information regarding stock options outstanding as of March 31, 2022 is as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Options Outstanding ​ Options Exercisable ​ Weighted Avg ​ Weighted ​ Weighted ​ ​ Remaining ​ ​ ​ Average ​ ​ ​ Average Range of ​ Contractual ​ ​ ​ Exercise ​ ​ ​ Exercise Exercise Price ​ Life (years) ​ Number ​ Price ​ Number ​ Price ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ $1.00 - $3.00 1.29 17,332 ​ $ 2.78 17,332 ​ $ 2.78 ​ The following table presents information on stock options outstanding, less estimated forfeitures, as of March 31, 2022 and 2021: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2022 ​ March 31, 2021 Stock options fully vested and expected to vest: ​ ​ ​ Number ​ ​ 17,332 ​ 23,332 Weighted average exercise price ​ $ 2.78 ​ $ 2.78 Aggregate intrinsic value (1) ​ $ 83,000 ​ $ 97,000 Weighted average contractual term of options (years) ​ 1.29 ​ 2.29 Stock options fully vested and currently exercisable: ​ ​ ​ ​ Number ​ 17,332 ​ 23,332 Weighted average exercise price ​ $ 2.78 ​ $ 2.78 Aggregate intrinsic value (1) ​ $ 83,000 ​ $ 97,000 Weighted average contractual term of options (years) ​ 1.29 ​ 2.29 ​ (1) The aggregate intrinsic value of a stock option in the table above represents the total pre-tax intrinsic value (the amount by which the current market value of the underlying stock exceeds the exercise price) that would have been received by the option holders had all option holders exercised. This amount changes based on changes in the market value of the Company’s stock. The total intrinsic value of stock options exercised was $25,000, $68,000 and $238,000 for the years ended March 31, 2022, 2021 and 2020, respectively. During the year ended March 31, 2022, the Company granted a total of 69,285 shares of restricted stock pursuant to the 2017 Plan of which vesting for 15,274 shares of restricted stock were time based and vesting for 54,011 shares of restricted stock were performance based subject to attaining certain performance metrics. During the year ended March 31, 2021, the Company granted a total of 90,763 shares of restricted stock pursuant to the 2017 Plan of which vesting for 19,453 shares of restricted stock were time based and vesting for 71,310 shares of restricted stock were performance based subject to attaining certain performance metrics. The fair value of restricted stock awards is equal to the fair value of the Company’s stock on the date of grant. The related stock-based compensation expense is recorded over the requisite service period. Stock-based compensation related to restricted stock was $319,000 , $352,000 , and $302,000 for the years ended March 31, 2022, 2021, and 2020, respectively. The unrecognized stock-based compensation related to restricted stock was $401,000 and $348,000 at March 31, 2022 and 2021. The weighted average vesting period for the restricted stock was 1.53 years and 1.63 years at March 31, 2022 and 2021, respectively. The following table presents the activity related to restricted stock for the year ended March 31, 2022: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Time Based Performance Based Total ​ ​ Number ​ Weighted ​ Number ​ Weighted ​ Number ​ Weighted ​ ​ of ​ Average ​ of ​ Average ​ of ​ Average ​ ​ Unvested ​ Grant Date ​ Unvested ​ Grant Date ​ Unvested ​ Grant Date ​ Shares Fair Value Shares Fair Value Shares Fair Value Balance, beginning of period 45,616 ​ $ 6.57 96,772 ​ $ 5.27 142,388 ​ $ 5.69 Granted 15,274 ​ 7.08 54,011 ​ 7.06 69,285 ​ 7.06 Forfeited (4,417) ​ 5.82 (16,559) ​ 5.55 (20,976) ​ 5.61 Vested (29,618) ​ 7.43 (12,732) ​ 8.35 (42,350) ​ 7.71 Balance, end of period 26,855 ​ $ 6.02 121,492 ​ $ 5.70 148,347 ​ $ 5.76 ​ Employee Stock Ownership Plan - The Company sponsors an ESOP that covers all employees with at least one year and 1,000 hours of service who are over the age of 21. For the years ended March 31, 2022, 2021 and 2020, the Bank purchased 25,000 , 5,354 and 43,545 shares of common stock, respectively, on the open market and contributed such shares to the ESOP as a discretionary employer contribution. As of March 31, 2022 and 2021, all shares of common stock purchased for the ESOP have been allocated to participant accounts. As of March 31, 2020, there were approximately 19,000 shares, which had not been allocated to participant accounts under the Company’s ESOP. The Company recorded employee benefits expense of $ 192,000 , $ 96,000 and $195,000 for these contributions for the years ended March 31, 2022, 2021 and 2020, respectively, which represented the fair value of the related common stock on the date it was acquired. Shares held by the ESOP at March 31, 2022 and 2021 totaled 387,588 and 394,316 , respectively. Trust Company Stock Options – At March 31, 2022, there were no Trust Company stock options outstanding. At March 31, 2021, there were 500 Trust Company stock options outstanding, which had been granted to the President and Chief Executive Officer of the Trust Company. During the year ended March 31, 2022, the Trust Company did not incur any stock-based compensation expense related to these options. During the year ended March 31, 2021, the Trust Company incurred stock-based compensation expense related to these options of $44,000 . During each of the years ended March 31, 2022 and 2021, 500 Trust Company stock options were exercised. There were no Trust Company stock options granted during the years ended March 31, 2022, 2021 and 2020.

SHAREHOLDERS' EQUITY AND REGULA

SHAREHOLDERS' EQUITY AND REGULATORY CAPITAL REQUIREMENTS	12 Months Ended
	Mar. 31, 2022
Shareholders Equity And Regulatory Capital Requirements [Abstract]
SHAREHOLDERS' EQUITY AND REGULATORY CAPITAL REQUIREMENTS	12. SHAREHOLDERS’ EQUITY AND REGULATORY CAPITAL REQUIREMENTS The Bank is a state-chartered, federally insured institution subject to various regulatory capital requirements administered by the FDIC . Failure to meet minimum capital requirements can result in the initiation of certain mandatory and possibly additional discretionary actions by regulators that, if undertaken, could have a direct material effect on the Bank’s financial statements . Under capital adequacy guidelines and the regulatory framework for prompt corrective action, the Bank must meet specific capital guidelines that involve quantitative measures of the Bank’s assets, liabilities and certain off-balance sheet items as calculated under regulatory accounting practices. The Bank’s capital amounts and classification are also subject to qualitative judgments by the regulators about components, risk weightings and other factors. Quantitative measures established by regulation to ensure capital adequacy require the Bank to maintain minimum amounts and ratios of total and tier I capital to risk-weighted assets, core capital to total assets and tangible capital to tangible assets (set forth in the table below). Management believes the Bank met all capital adequacy requirements to which it was subject as of March 31, 2022. ​ As of March 31, 2022, the Bank was categorized as “well capitalized” under the FDIC’s regulatory framework for prompt corrective action. The Bank’s actual and required minimum capital amounts and ratios were as follows at the dates indicated (dollars in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ "Well Capitalized" ​ ​ ​ ​ ​ ​ ​ ​ For Capital ​ Under Prompt ​ ​ ​ Actual Adequacy Purposes Corrective Action March 31, 2022 Amount Ratio Amount Ratio Amount Ratio ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Total Capital: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ (To Risk-Weighted Assets) ​ $ 168,486 ​ 16.38 % $ 82,305 ​ 8.0 % $ 102,881 ​ 10.0 % Tier 1 Capital: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ (To Risk-Weighted Assets) ​ ​ 155,601 ​ 15.12 ​ 61,728 ​ 6.0 ​ 82,305 ​ 8.0 ​ Common equity tier 1 Capital: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ (To Risk-Weighted Assets) ​ ​ 155,601 ​ 15.12 ​ 46,296 ​ 4.5 ​ 66,872 ​ 6.5 ​ Tier 1 Capital (Leverage): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ (To Average Tangible Assets) ​ ​ 155,601 ​ 9.19 ​ 67,763 ​ 4.0 ​ 84,704 ​ 5.0 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ "Well Capitalized" ​ ​ ​ ​ ​ ​ ​ ​ For Capital ​ Under Prompt ​ ​ ​ Actual Adequacy Purposes Corrective Action March 31, 2021 Amount Ratio Amount Ratio Amount Ratio ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Total Capital: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ (To Risk-Weighted Assets) ​ $ 151,555 17.35 % $ 69,879 8.0 % $ 87,349 10.0 % Tier 1 Capital: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ (To Risk-Weighted Assets) ​ ​ 140,529 16.09 ​ 52,409 6.0 ​ 69,879 8.0 ​ Common equity tier 1 Capital: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ (To Risk-Weighted Assets) ​ ​ 140,529 16.09 ​ 39,307 4.5 ​ 56,777 6.5 ​ Tier 1 Capital (Leverage): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ (To Average Tangible Assets) ​ ​ 140,529 9.63 ​ 58,344 4.0 ​ 72,930 5.0 ​ ​ In addition to the minimum common equity tier 1 (“CET1”), Tier 1 and total capital ratios, the Bank is required to maintain a capital conservation buffer consisting of additional CET1 capital in order to avoid limitations on paying dividends, engaging in share repurchases, and paying discretionary bonuses based on percentages of eligible retained income that could be utilized for such actions. The capital conservation buffer is required to be an amount greater than 2.5% of risk-weighted assets. As of March 31, 2022, the Bank’s CET1 capital exceeded the required capital conservation buffer at an amount greater than 2.5%. For a bank holding company, such as Riverview Bancorp, Inc., the capital guidelines apply on a bank only basis. The Federal Reserve expects the holding company’s subsidiary banks to be well capitalized under the prompt corrective action regulations. If Riverview Bancorp, Inc. was subject to regulatory guidelines for bank holding companies at March 31, 2022, it would have exceeded all regulatory capital requirements. At periodic intervals, the Company’s banking regulators routinely examine the Company’s financial condition and risk management processes as part of their legally prescribed oversight. Based on their examinations, these regulators can direct that the Company’s consolidated financial statements be adjusted in accordance with their findings. A future examination could include a review of certain transactions or other amounts reported in the Company’s 2022 consolidated financial statements .

EARNINGS PER SHARE

EARNINGS PER SHARE	12 Months Ended
	Mar. 31, 2022
EARNINGS PER SHARE
EARNINGS PER SHARE	13. EARNINGS PER SHARE Basic earnings per share (“EPS”) is computed by dividing net income or loss applicable to common stock by the weighted average number of common shares outstanding during the period, without considering any dilutive items. Nonvested shares of restricted stock are included in the computation of basic EPS because the holder has voting rights and shares in non-forfeitable dividends during the vesting period. Diluted EPS is computed by dividing net income or loss applicable to common stock by the weighted average number of common shares and common stock equivalents for items that are dilutive, net of shares assumed to be repurchased using the treasury stock method at the average share price for the Company’s common stock during the period. Common stock equivalents arise from the assumed exercise of outstanding stock options. For the years ended March 31, 2022, 2021 and 2020, there were no stock options excluded in computing diluted EPS. The following table presents a reconciliation of the components used to compute basic and diluted EPS for the years indicated: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year Ended March 31, (Dollars and share data in thousands, except per share data) 2022 2021 2020 Basic EPS computation: ​ ​ ​ Numerator-net income ​ $ 21,820 ​ $ 10,472 ​ $ 15,748 Denominator-weighted average common shares outstanding ​ 22,213 ​ 22,296 ​ 22,708 Basic EPS ​ $ 0.98 ​ $ 0.47 ​ $ 0.69 Diluted EPS computation: ​ ​ ​ Numerator-net income ​ $ 21,820 ​ $ 10,472 ​ $ 15,748 Denominator-weighted average common shares outstanding ​ 22,213 ​ 22,296 ​ 22,708 Effect of dilutive stock options ​ 12 ​ 17 ​ 36 Weighted average common shares and common stock equivalents ​ 22,225 ​ 22,313 ​ 22,744 Diluted EPS ​ $ 0.98 ​ $ 0.47 ​ $ 0.69 ​ In March 2022, the Company’s Board of Directors adopted a stock repurchase program (the “March 2022 repurchase program”). Under the March 2022 repurchase program, the Company was authorized to repurchase up to $5.0 million of the Company’s outstanding shares of common stock, in the open market, based on prevailing market prices, or in privately negotiated transactions, over a period beginning on March 21, 2022 and continuing until the earlier of the completion of the authorized level of repurchases or September 9, 2022, depending upon market conditions. As of March 31, 2022, the Company had repurchased $216,000 of shares under the March 2022 repurchase program at an average price of $7.63 per share. In June 2021, the Company’s Board of Directors adopted a stock repurchase program (the “June 2021 repurchase program”). Under the June 2021 repurchase program, the Company was authorized to repurchase up to $5.0 million of the Company’s outstanding shares of common stock, in the open market based on prevailing market prices, or in privately negotiated transactions. The June 2021 repurchase plan was in effect from June 21, 2021 until the completion of the authorization or six months, whichever was earlier. At the conclusion of six months ending December 20, 2021, the Company had repurchased $1.7 million of shares under the June 2021 repurchase program at an average price of $6.89 per share. In February 2020, the Company’s Board of Directors adopted a stock repurchase program (the “repurchase program”). Under the repurchase program, the Company was authorized to repurchase up to 500,000 shares of the Company’s outstanding shares of common stock, in the open market based on prevailing market prices, or in privately negotiated transactions, during the period from March 12, 2020 until the earlier of the completion of the repurchase of 500,000 shares of the Company’s common stock or six months, depending on market conditions. As of March 31, 2020, the Company had repurchased 204,100 shares under the repurchase program at an average price of $4.94 per share. As of April 17, 2020, the Company had repurchased the remaining 295,900 shares at an average price of $4.85 per share.

FAIR VALUE MEASUREMENTS

FAIR VALUE MEASUREMENTS	12 Months Ended
	Mar. 31, 2022
FAIR VALUE MEASUREMENTS
FAIR VALUE MEASUREMENTS	14. FAIR VALUE MEASUREMENTS Fair value is defined under GAAP as the exchange price that would be received for an asset or paid to transfer a liability (exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. GAAP requires that valuation techniques maximize the use of observable inputs and minimize the use of unobservable inputs. GAAP also establishes a fair value hierarchy which prioritizes the valuation inputs into three broad levels. Based on the underlying inputs, each fair value measurement in its entirety is reported in one of three levels. These levels are: ​ Quoted prices in active markets for identical assets (Level 1): Inputs that are quoted unadjusted prices in active markets for identical assets or liabilities that the Company has the ability to access at the measurement date. An active market is a market in which transactions for the asset or liability occur with sufficient frequency and volume to provide pricing information on an ongoing basis. Other observable inputs (Level 2): Inputs that reflect the assumptions market participants would use in pricing the asset or liability developed based on market data obtained from sources independent of the reporting entity including quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in inactive markets and inputs derived principally from or corroborated by observable market data by correlation or other means. Significant unobservable inputs (Level 3): Inputs that reflect the reporting entity’s own assumptions about the assumptions market participants would use in pricing an asset or liability developed based on the best information available in the circumstances. Financial instruments are presented in the tables that follow by recurring or nonrecurring measurement status. Recurring assets are initially measured at fair value and are required to be remeasured at fair value in the consolidated financial statements at each reporting date. Assets measured on a nonrecurring basis are assets that, as a result of an event or circumstance, were required to be remeasured at fair value after initial recognition in the consolidated financial statements at some time during the reporting period. The following tables present assets that are measured at estimated fair value on a recurring basis at the dates indicated (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Total Estimated ​ Estimated Fair Value Measurements Using March 31, 2022 Fair Value Level 1 Level 2 Level 3 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Investment securities available for sale: ​ ​ ​ ​ Municipal securities ​ $ 39,604 ​ $ — ​ $ 39,604 ​ $ — Agency securities ​ 40,705 ​ — ​ 40,705 ​ — Real estate mortgage investment conduits ​ 32,717 ​ — ​ 32,717 ​ — Residential mortgage-backed securities ​ 16,945 ​ — ​ 16,945 ​ — Other mortgage-backed securities ​ 35,811 ​ — ​ 35,811 ​ — Total assets measured at fair value on a recurring basis ​ $ 165,782 ​ $ — ​ $ 165,782 ​ $ — ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Total Estimated Estimated Fair Value Measurements Using March 31, 2021 Fair Value Level 1 Level 2 Level 3 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Investment securities available for sale: ​ ​ ​ ​ Municipal securities ​ $ 23,566 ​ $ — ​ $ 23,566 ​ $ — Agency securities ​ 25,315 ​ — ​ 25,315 ​ — Real estate mortgage investment conduits ​ 55,815 ​ — ​ 55,815 ​ — Residential mortgage-backed securities ​ 72,248 ​ — ​ 72,248 ​ — Other mortgage-backed securities ​ 39,360 ​ — ​ 39,360 ​ — Total assets measured at fair value on a recurring basis ​ $ 216,304 ​ $ — ​ $ 216,304 ​ $ — ​ There were no transfers of assets into or out of Levels 1, 2 or 3 during the years ended March 31, 2022 and 2021. The following methods were used to estimate the fair value of investment securities in the above table: Investment securities are included within Level 1 of the hierarchy when quoted prices in an active market for identical assets are available. The Company uses a third-party pricing service to assist the Company in determining the fair value of its Level 2 securities, which incorporates pricing models and/or quoted prices of investment securities with similar characteristics. Investment securities are included within Level 3 of the hierarchy when there are significant unobservable inputs. For Level 2 securities, the independent pricing service provides pricing information by utilizing evaluated pricing models supported with market data information. Standard inputs include benchmark yields, reported trades, broker/dealer quotes, issuer spreads, two-sided markets, benchmark securities, bids, offers and reference data from market research publications. The Company’s third-party pricing service has established processes for the Company to submit inquiries regarding the estimated fair value. In such cases, the Company’s third-party pricing service will review the inputs to the evaluation in light of any new market data presented by the Company. The Company’s third-party pricing service may then affirm the original estimated fair value or may update the evaluation on a go-forward basis. Management reviews the pricing information received from the third-party pricing service through a combination of procedures that include an evaluation of methodologies used by the pricing service, analytical reviews and performance analysis of the prices against statistics and trends. Based on this review, management determines whether the current placement of the security in the fair value hierarchy is appropriate or whether transfers may be warranted. As necessary, management compares prices received from the pricing service to discounted cash flow models or by performing independent valuations of inputs and assumptions similar to those used by the pricing service in order to help ensure prices represent a reasonable estimate of fair value. The following tables present assets that are measured at estimated fair value on a nonrecurring basis at the dates indicated (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Total ​ Estimated Fair Value ​ ​ Estimated ​ Measurements Using March 31, 2022 Fair Value Level 1 Level 2 Level 3 ​ ​ ​ ​ ​ ​ ​ ​ ​ Impaired loans ​ $ 228 ​ $ — ​ $ — ​ $ 228 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Impaired loans ​ $ 241 ​ $ — ​ $ — ​ $ 241 ​ The following table presents quantitative information about Level 3 inputs for financial instruments measured at fair value on a nonrecurring basis at March 31, 2022 and 2021: ​ ​ ​ ​ ​ ​ ​ ​ ​ Valuation Significant Unobservable ​ ​ ​ Technique ​ Inputs ​ Range ​ ​ ​ ​ ​ ​ ​ Impaired loans Appraised Adjustment for market conditions N/A (1) ​ ​ Discounted cash flows ​ Discount rate ​ 5.375 % - 8.000% ​ (1) There were no adjustments to appraised values of impaired loans as of March 31, 2022 and 2021. For information regarding the Company’s method for estimating the fair value of impaired loans, see Note 1 – Summary of Significant Accounting Policies – Allowance for Loan Losses. In determining the estimated net realizable value of the underlying collateral, the Company primarily uses third-party appraisals which may utilize a single valuation approach or a combination of approaches including comparable sales and the income approach. Adjustments are routinely made in the appraisal process by the appraisers to adjust for differences between the comparable sales and income data available and include consideration of variations in location, size, and income production capacity of the property. Additionally, the appraisals are periodically further adjusted by the Company in consideration of charges that may be incurred in the event of foreclosure and are based on management’s historical knowledge, changes in business factors and changes in market conditions. Impaired loans are reviewed and evaluated quarterly for additional impairment and adjusted accordingly based on the same factors identified above. Because of the high degree of judgment required in estimating the fair value of collateral underlying impaired loans and because of the relationship between fair value and general economic conditions, the Company considers the fair value of impaired loans to be highly sensitive to changes in market conditions. The following disclosure of the estimated fair value of financial instruments is made in accordance with GAAP. The Company, using available market information and appropriate valuation methodologies, has determined the estimated fair value amounts. However, considerable judgment is necessary to interpret market data in the development of the estimates of fair value. Accordingly, the estimates presented herein are not necessarily indicative of the amounts the Company could realize in the future. The use of different market assumptions and/or estimation methodologies may have a material effect on the estimated fair value amounts. The carrying amounts and estimated fair values of financial instruments are as follows at the dates indicated (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Carrying ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Estimated March 31, 2022 ​ Amount Level 1 ​ Level 2 ​ Level 3 Fair Value ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Assets: ​ ​ ​ ​ ​ Cash and cash equivalents ​ $ 241,424 ​ $ 241,424 ​ $ — ​ $ — ​ $ 241,424 Certificates of deposit held for investment ​ 249 ​ — ​ 253 ​ — ​ 253 Investment securities available for sale ​ 165,782 ​ — ​ 165,782 ​ — ​ 165,782 Investment securities held to maturity ​ 253,100 ​ — ​ 236,029 ​ — ​ 236,029 Loans receivable, net ​ 975,885 ​ — ​ — ​ 962,893 ​ 962,893 FHLB stock ​ 2,019 ​ — ​ 2,019 ​ — ​ 2,019 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Liabilities: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Certificates of deposit ​ 111,372 ​ — ​ 109,860 ​ — ​ 109,860 Junior subordinated debentures ​ 26,833 ​ — ​ — ​ 16,046 ​ 16,046 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Carrying ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Estimated March 31, 2021 ​ Amount ​ Level 1 ​ Level 2 ​ Level 3 ​ Fair Value ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Assets: ​ ​ ​ ​ ​ Cash and cash equivalents ​ $ 265,408 ​ $ 265,408 ​ $ — ​ $ — ​ $ 265,408 Certificates of deposit held for investment ​ 249 ​ — ​ 262 ​ — ​ 262 Investment securities available for sale ​ 216,304 ​ — ​ 216,304 ​ — ​ 216,304 Investment securities held to maturity ​ 39,574 ​ — ​ 38,220 ​ — ​ 38,220 Loans receivable, net ​ 924,057 ​ — ​ — ​ 920,102 ​ 920,102 FHLB stock ​ 1,722 ​ — ​ 1,722 ​ — ​ 1,722 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Liabilities: ​ ​ ​ ​ ​ Certificates of deposit ​ 120,625 ​ — ​ 121,610 ​ — ​ 121,610 Junior subordinated debentures ​ 26,748 ​ — ​ — ​ 14,434 ​ 14,434 ​ ​ Fair value estimates were based on existing financial instruments without attempting to estimate the value of anticipated future business. The fair value was not estimated for assets and liabilities that were not considered financial instruments.

REVENUE FROM CONTRACTS WITH CUS

REVENUE FROM CONTRACTS WITH CUSTOMERS	12 Months Ended
	Mar. 31, 2022
REVENUE FROM CONTRACTS WITH CUSTOMERS
REVENUE FROM CONTRACTS WITH CUSTOMERS	15. REVENUE FROM CONTRACTS WITH CUSTOMERS In accordance with ASC Topic 606 “Revenues from Contracts with Customers” (“ASC 606”), revenues are recognized when goods or services are transferred to the customer in exchange for the consideration the Company expects to be entitled to receive. The largest portion of the Company’s revenue is from interest income, which is not within the scope of ASC 606. All of the Company’s revenue from contracts with customers within the scope of ASC 606 is recognized in non-interest income with the exception of gains on sales of REO and premises and equipment, which are included in non-interest expense. If a contract is determined to be within the scope of ASC 606, the Company recognizes revenue as it satisfies a performance obligation. Payments from customers are generally collected at the time services are rendered, monthly, or quarterly. For contracts with customers within the scope of ASC 606, revenue is either earned at a point in time or revenue is earned over time. Examples of revenue earned at a point in time are automated teller machine (“ATM”) transaction fees, wire transfer fees, overdraft fees and interchange fees. Revenue earned at a point in time is primarily based on the number and type of transactions that are generally derived from transactional information accumulated by the Company’s systems and is recognized immediately as the transactions occur or upon providing the service to complete the customer’s transaction. The Company is generally the principal in these contracts, with the exception of interchange fees, in which case the Company is acting as the agent and records revenue net of expenses paid to the principal. Examples of revenue earned over time, which generally occur on a monthly basis, are deposit account maintenance fees, investment advisory fees, merchant revenue, trust and investment management fees and safe deposit box fees. Revenue is generally derived from transactional information accumulated by the Company’s systems or those of third-parties and is recognized as the related transactions occur or services are rendered to the customer. For the years ended March 31, 2022, 2021 and 2020, substantially all of the Company’s revenues within the scope of ASC 606 are for performance obligations satisfied at a point in time. ​ Disaggregation of Revenue The following table includes the Company’s non-interest income disaggregated by type of service (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year Ended March 31, ​ 2022 2021 2020 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Asset management fees ​ $ 4,107 ​ $ 3,646 ​ $ 4,408 Debit card and ATM fees ​ 3,499 ​ 3,103 ​ 3,102 Deposit related fees ​ 1,634 ​ 1,514 ​ 2,212 Loan related fees ​ 1,247 ​ 1,229 ​ 605 BOLI (1) ​ 800 ​ 813 ​ 864 Net gains on sales of loans held for sale (1) ​ — ​ 28 ​ 252 FHLMC loan servicing fees (1) ​ 85 ​ 94 ​ 147 BOLI death benefit in excess of cash surrender value (1) ​ ​ 500 ​ ​ — ​ ​ — Other, net ​ 872 ​ 663 ​ 770 Total non-interest income, net ​ $ 12,744 ​ $ 11,090 ​ $ 12,360 ​ (1) Not within the scope of ASC 606 Revenues recognized within the scope of ASC 606 Asset management fees : Asset management fees are variable, since they are based on the customer’s underlying portfolio value, which is subject to market conditions and amounts invested by clients through the Trust Company. Asset management fees are recognized over the period that services are provided, and when the portfolio values are known or can be estimated at the end of each quarter. Debit card and ATM fees : Debit card and ATM interchange income represents fees earned when a debit card issued by the Bank is used. The Bank earns interchange fees from debit cardholder transactions through the MasterCard® payment network. Interchange fees from cardholder transactions represent a percentage of the underlying transaction value and are recognized daily, concurrently with the transaction processing services provided to the cardholder. The performance obligation is satisfied and the fees are earned when the cost of the transaction is charged to the cardholders’ debit card. Certain expenses directly associated with the debit cards are recorded on a net basis with the interchange income. Deposit related fees : Fees are earned on the Bank’s deposit accounts for various products offered to or services performed for the Bank’s customers. Fees include business account fees, non-sufficient fund fees, stop payment fees, wire services, safe deposit box and others. These fees are recognized on a daily, monthly or quarterly basis, depending on the type of service. Loan related fees : Non-interest loan fee income is earned on loans that the Bank services, excluding loans serviced for the FHLMC which are not within the scope of ASC 606. Loan related fees include prepayment fees, late charges, brokered loan fees, maintenance fees and others. These fees are recognized on a daily, monthly, quarterly or annual basis, depending on the type of service. Other : Fees earned on other services, such as merchant services or occasional non-recurring type services, are recognized at the time of the event or the applicable billing cycle. Contract Balances As of March 31, 2022 and 2021, the Company had no significant contract liabilities where the Company had an obligation to transfer goods or services for which the Company had already received consideration. In addition, the Company had no material unsatisfied performance obligations as of March 31, 2022 and 2021 .

COMMITMENTS AND CONTINGENCIES

COMMITMENTS AND CONTINGENCIES	12 Months Ended
	Mar. 31, 2022
COMMITMENTS AND CONTINGENCIES
COMMITMENTS AND CONTINGENCIES	16. COMMITMENTS AND CONTINGENCIES Off-balance sheet arrangements – In the normal course of business, the Company is a party to financial instruments with off-balance sheet risk in order to meet the financing needs of its customers. These financial instruments generally include commitments to originate mortgage, commercial and consumer loans. These instruments involve, to varying degrees, elements of credit and interest rate risk in excess of the amounts recognized in the consolidated balance sheets. The Company’s maximum exposure to credit loss in the event of nonperformance by the borrower is represented by the contractual amount of those instruments. The Company uses the same credit policies in making commitments as it does for on-balance sheet instruments. Commitments to originate loans are conditional and are honored for up to 45 days subject to the Company’s usual terms and conditions. Collateral is not required to support commitments. Standby letters of credit are conditional commitments issued by the Company to guarantee the performance of a customer to a third-party. These guarantees are primarily used to support public and private borrowing arrangements. The credit risk involved in issuing letters of credit is essentially the same as that involved in extending loan facilities to customers. Collateral held varies and is required in instances where the Company deems it necessary. Significant off-balance sheet commitments are listed below at the dates indicated (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Contract or Notional ​ ​ Amount ​ ​ March 31, ​ March 31, ​ 2022 2021 Commitments to extend credit: ​ ​ Adjustable-rate ​ $ 17,125 ​ $ 6,156 Fixed-rate ​ 2,895 ​ 6,522 Standby letters of credit ​ 1,780 ​ 1,999 Undisbursed loan funds and unused lines of credit ​ 137,460 ​ 134,781 Total ​ $ 159,260 ​ $ 149,458 ​ At March 31, 2022, the Company had no commitments to sell residential loans to the FHLMC. Other Contractual Obligations – In connection with certain asset sales, the Company typically makes representations and warranties about the underlying assets conforming to specified guidelines. If the underlying assets do not conform to the specifications, the Company may have an obligation to repurchase the assets or indemnify the purchaser against loss. At March 31, 2022, loans under warranty totaled $44.1 million, which substantially represents the unpaid principal balance of the Company’s loans serviced for the FHLMC. The Company believes that the potential for loss under these arrangements is remote. At March 31, 2022, the Company had an allowance for FHLMC loans of $12,000 . The Bank is a public depository and, accordingly, accepts deposit and other public funds belonging to, or held for the benefit of, Washington and Oregon states, political subdivisions thereof, and municipal corporations. In accordance with applicable state law, in the event of default of a participating bank, all other participating banks in the state collectively assure that no loss of funds are suffered by any public depositor. Generally, in the event of default by a public depository, the assessment attributable to all public depositories is allocated on a pro rata basis in proportion to the maximum liability of each depository as it existed on the date of loss. The Company has not incurred any losses related to public depository funds for the years ended March 31, 2022, 2021 and 2020. The Bank has entered into employment contracts with certain key employees, which provide for contingent payments subject to future events. Litigation – The Company is periodically a party to litigation arising in the ordinary course of business. In the opinion of management, these actions will not have a material adverse effect, if any, on the Company’s future consolidated financial position, results of operations and cash flows.

LEASES

LEASES	12 Months Ended
	Mar. 31, 2022
LEASES
LEASES	17. LEASES The Company has a finance lease for the shell of the building constructed as the Company’s operations center which expires in November 2039. The Company is also obligated under various noncancelable operating lease agreements for land, buildings and equipment that require future minimum rental payments. For each operating lease with an initial term of more than 12 months, the Company records an operating lease ROU asset (representing the right to use the underlying asset for the lease term) and an operating lease liability (representing the obligation to make lease payments required under the terms of the lease). ROU assets and lease liabilities are recognized at the lease commencement date based on the present value of lease payments over the lease term. The Company uses its estimated incremental borrowing rate – derived from information available at the lease commencement date – as the discount rate when determining the present value of lease payments. The Company does not have any operating leases with an initial term of 12 months or less. Certain operating leases contain various provisions for increases in rental rates, based either on changes in the published Consumer Price Index or a predetermined escalation schedule. Certain operating leases provide the Company with the option to extend the lease term one or more times following expiration of the initial term. Lease extensions are not reasonably certain and the Company generally does not include payments occurring during option periods in the calculation of its operating lease ROU assets and operating lease liabilities. The table below presents the ROU assets and lease liabilities recorded in the consolidated balance sheet at the dates indicated (dollars in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, ​ March 31, Classification in the Leases 2022 2021 consolidated balance sheets Finance lease ROU assets ​ $ 1,355 $ 1,432 Financing lease ROU assets Finance lease liability ​ $ 2,283 $ 2,329 Finance lease liability Finance lease remaining lease term ​ 17.68 years 18.68 years ​ Finance lease discount rate ​ 7.16 % 7.16 % ​ ​ ​ ​ ​ ​ ​ ​ ​ Operating lease ROU assets ​ $ 7,907 $ 8,782 Prepaid expenses and other assets Operating lease liabilities ​ $ 8,306 $ 9,201 Accrued expenses and other liabilities Operating lease weighted-average remaining lease term ​ 7.02 years 7.87 years ​ Operating lease weighted-average discount rate ​ 1.81 % 1.77 % ​ The table below presents certain information related to the lease costs for operating leases, which are recorded in occupancy and depreciation in the accompanying consolidated statements of income at the dates indicated (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year ended ​ Year ended ​ Year ended Lease Costs March 31, 2022 March 31, 2021 ​ March 31, 2020 Finance lease amortization of ROU asset ​ $ 77 ​ $ 77 ​ $ 77 Finance lease interest on lease liability ​ 165 ​ 168 ​ ​ 171 Operating lease costs ​ 1,266 ​ 1,312 ​ ​ 1,508 Variable lease costs ​ 209 ​ 209 ​ ​ 209 Total lease cost (1) ​ $ 1,717 ​ $ 1,766 ​ $ 1,965 ​ (1) Income related to sub-lease activity is not significant and not presented herein . Supplemental cash flow information – Operating cash flows paid for operating lease amounts included in the measurement of lease liabilities was $1.5 million, $1.5 million and $1.7 million for the years ended March 31, 2022, 2021 and 2020, respectively. During the years ended March 31, 2022, 2021 and 2020, the Company recorded operating lease ROU assets that were exchanged for operating lease liabilities of $441,000 , $6.1 million and $5.6 million, respectively. ​ The following table reconciles the undiscounted cash flows for the periods presented related to the Company’s lease liabilities as of March 31, 2022 (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ Year Ending March 31: Operating Finance ​ ​ Leases ​ Lease 2023 ​ $ 1,352 ​ $ 215 2024 ​ 1,370 ​ 219 2025 ​ 1,375 ​ 222 2026 ​ 1,125 ​ 226 2027 ​ 1,116 ​ 230 Thereafter ​ 2,531 ​ 2,944 Total minimum lease payments ​ 8,869 ​ 4,056 Less: amount of lease payment representing interest ​ (563) ​ (1,773) Lease liabilities ​ $ 8,306 ​ $ 2,283 ​

RIVERVIEW BANCORP, INC. (PARENT

RIVERVIEW BANCORP, INC. (PARENT COMPANY ONLY)	12 Months Ended
	Mar. 31, 2022
RIVERVIEW BANCORP, INC. (PARENT COMPANY ONLY)
RIVERVIEW BANCORP, INC. (PARENT COMPANY ONLY)	​ ​ 18. BALANCE SHEETS AS OF MARCH 31, 2022 AND 2021 ​ ​ ​ ​ ​ ​ ​ ​ (In thousands) 2022 2021 ASSETS ​ ​ Cash and cash equivalents ​ $ 10,867 ​ $ 10,006 Investment in the Bank ​ 173,223 ​ 168,064 Other assets ​ 1,321 ​ 1,454 TOTAL ASSETS ​ $ 185,411 ​ $ 179,524 LIABILITIES AND SHAREHOLDERS’ EQUITY ​ ​ Accrued expenses and other liabilities ​ $ 112 ​ $ 64 Dividend payable ​ 1,217 ​ 1,118 Borrowings ​ 26,833 ​ 26,748 Shareholders' equity ​ 157,249 ​ 151,594 TOTAL LIABILITIES AND SHAREHOLDERS’ EQUITY ​ $ 185,411 ​ $ 179,524 ​ STATEMENTS OF INCOME FOR THE YEARS ENDED MARCH 31, 2022, 2021 AND 2020 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ (In thousands) 2022 2021 2020 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ INCOME: ​ ​ ​ Interest on investment securities and other short-term investments ​ $ 16 ​ $ 17 ​ $ 33 Total income ​ 16 ​ 17 ​ 33 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ EXPENSE: ​ ​ ​ ​ ​ ​ Management service fees paid to the Bank ​ 143 ​ 143 ​ 143 Other expenses ​ 670 ​ 731 ​ 1,233 Total expense ​ 813 ​ 874 ​ 1,376 LOSS BEFORE INCOME TAXES AND EQUITY ​ ​ ​ ​ ​ ​ IN UNDISTRIBUTED INCOME OF THE BANK ​ (797) ​ (857) ​ (1,343) BENEFIT FOR INCOME TAXES ​ (167) ​ (180) ​ (282) LOSS OF PARENT COMPANY ​ (630) ​ (677) ​ (1,061) EQUITY IN UNDISTRIBUTED INCOME OF THE BANK ​ 22,450 ​ 11,149 ​ 16,809 NET INCOME ​ $ 21,820 ​ $ 10,472 ​ $ 15,748 ​ There were no items of other comprehensive income that were solely attributable to the parent company. RIVERVIEW BANCORP, INC. (PARENT COMPANY ONLY) STATEMENTS OF CASH FLOWS FOR THE YEARS ENDED MARCH 31, 2022, 2021 AND 2020 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ (In thousands) 2022 2021 2020 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ CASH FLOWS FROM OPERATING ACTIVITIES: ​ ​ ​ Net income ​ $ 21,820 ​ $ 10,472 ​ $ 15,748 Adjustments to reconcile net income to net cash used in operating activities: ​ ​ ​ ​ ​ ​ Equity in undistributed income of the Bank ​ (22,450) ​ (11,149) ​ (16,809) Amortization ​ 85 ​ 86 ​ 87 Provision for deferred income taxes ​ 2 ​ — ​ — Stock-based compensation ​ ​ 319 ​ ​ 396 ​ ​ 346 Changes in assets and liabilities: ​ ​ ​ ​ ​ ​ Other assets ​ 131 ​ 224 ​ (278) Accrued expenses and other liabilities ​ 48 ​ (417) ​ 364 Net cash used in operating activities ​ (45) ​ (388) ​ (542) ​ ​ ​ ​ CASH FLOWS FROM INVESTING ACTIVITIES: ​ ​ ​ Dividend from the Bank ​ 7,500 ​ 6,000 ​ 11,500 Net cash provided by investing activities ​ 7,500 ​ 6,000 ​ 11,500 ​ ​ ​ ​ ​ ​ ​ CASH FLOWS FROM FINANCING ACTIVITIES: ​ ​ ​ ​ ​ ​ Dividends paid ​ (4,670) ​ (4,478) ​ (4,075) Proceeds from exercise of stock options ​ 16 ​ 50 ​ 227 Repurchase of common stock ​ ​ (1,940) ​ ​ (1,447) ​ ​ (1,019) Net cash used in financing activities ​ (6,594) ​ (5,875) ​ (4,867) NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS ​ 861 ​ (263) ​ 6,091 ​ ​ ​ ​ ​ ​ ​ CASH AND CASH EQUIVALENTS, BEGINNING OF YEAR ​ 10,006 ​ 10,269 ​ 4,178 ​ ​ ​ ​ ​ ​ ​ CASH AND CASH EQUIVALENTS, END OF YEAR ​ $ 10,867 ​ $ 10,006 ​ $ 10,269 ​ ​ RIVERVIEW BANCORP, INC. SELECTED QUARTERLY FINANCIAL DATA (UNAUDITED): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ (Dollars in thousands, except per share data) ​ Three Months Ended Fiscal 2022: March 31 December 31 September 30 June 30 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Interest and dividend income ​ $ 12,389 ​ $ 12,551 ​ $ 12,965 ​ $ 11,920 Interest expense ​ 483 ​ 492 ​ 589 ​ 636 Net interest income ​ 11,906 ​ 12,059 ​ 12,376 ​ 11,284 Recapture of loan losses ​ (650) ​ ​ (1,275) ​ ​ (1,100) ​ ​ (1,600) Non-interest income, net ​ 2,966 ​ 3,116 ​ 3,074 ​ 3,588 Non-interest expense ​ 10,115 ​ 9,279 ​ 8,187 ​ 9,137 Income before income taxes ​ 5,407 ​ 7,171 ​ 8,363 ​ 7,335 Provision for income taxes ​ 1,282 ​ 1,661 ​ 1,933 ​ 1,580 ​ ​ ​ ​ ​ Net income ​ $ 4,125 ​ $ 5,510 ​ $ 6,430 ​ $ 5,755 ​ ​ ​ ​ ​ Basic earnings per common share (1) ​ $ 0.19 ​ $ 0.25 ​ $ 0.29 ​ $ 0.26 ​ ​ ​ ​ ​ ​ ​ ​ ​ Diluted earnings per common share (1) ​ $ 0.19 ​ $ 0.25 ​ $ 0.29 ​ $ 0.26 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Fiscal 2021: ​ ​ ​ ​ Interest and dividend income ​ $ 11,865 ​ $ 12,292 ​ $ 11,949 ​ $ 12,238 Interest expense ​ 669 ​ 763 ​ 885 ​ 1,110 Net interest income ​ 11,196 ​ 11,529 ​ 11,064 ​ 11,128 Provision for loan losses ​ — ​ — ​ 1,800 ​ 4,500 Non-interest income, net ​ 2,836 ​ 2,812 ​ 2,819 ​ 2,623 Non-interest expense ​ 9,626 ​ 9,107 ​ 8,836 ​ 8,685 Income before income taxes ​ 4,406 ​ 5,234 ​ 3,247 ​ 566 Provision for income taxes ​ 992 ​ 1,199 ​ 704 ​ 86 ​ ​ ​ ​ ​ Net income ​ $ 3,414 ​ $ 4,035 ​ $ 2,543 ​ $ 480 ​ ​ ​ ​ ​ Basic earnings per common share (1) ​ $ 0.15 ​ $ 0.18 ​ $ 0.11 ​ $ 0.02 ​ ​ ​ ​ ​ ​ Diluted earnings per common share (1) ​ $ 0.15 ​ $ 0.18 ​ $ 0.11 ​ $ 0.02 ​ (1) Quarterly earnings per common share may vary from annual earnings per common share due to rounding .

SUMMARY OF SIGNIFICANT ACCOUN_2

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)	12 Months Ended
	Mar. 31, 2022
Accounting Policies [Abstract]
PRINCIPLES OF CONSOLIDATION	Principles of Consolidation – The accompanying consolidated financial statements include the accounts of Riverview Bancorp, Inc.; its wholly-owned subsidiary, Riverview Community Bank (the “Bank”); the Bank’s wholly-owned subsidiary, Riverview Services, Inc., and the Bank’s majority-owned subsidiary, Riverview Trust Company (the “Trust Company”) (collectively referred to as the “Company”). As a Washington state-chartered commercial bank, the Bank’s regulators are the Washington State Department of Financial Institutions (“WDFI”) and the Federal Deposit Insurance Corporation (“FDIC”). The Board of Governors of the Federal Reserve System (“Federal Reserve”) is the primary federal regulator for Riverview Bancorp, Inc. All inter-company transactions and balances have been eliminated in consolidation. For the period from April 1, 2017 through December 2019, the Trust Company was a wholly-owned subsidiary of the Bank. In December 2019, the Trust Company issued 1,500 shares of Trust Company stock in conjunction with the exercise of 1,500 Trust Company stock options by the Trust Company’s President and Chief Executive Officer. In both October 2020 and May 2021, the Trust Company issued an additional 500 shares of Trust Company stock with the exercise of options for 500 shares of Trust Company common stock by the Trust Company’s President and Chief Executive Officer. As a result of these transactions, the Bank’s ownership in the Trust Company decreased from 100% to 97.3% , resulting in a 2.7% noncontrolling interest held by the Trust Company’s President and Chief Executive Officer. The noncontrolling interest was $212,000 and $154,000 as of March 31, 2022 and 2021, respectively, and net income attributable to the noncontrolling interest was $19,000 , $10,000 and $5,000 for the years ended March 31, 2022, 2021 and 2020, respectively. These amounts are not presented separately in the accompanying consolidated financial statements due to their insignificance. The Company has three subsidiary grantor trusts which were established in connection with the issuance of trust preferred securities (see Note 9). In accordance with accounting principles generally accepted in the United States of America (“generally accepted accounting principles” or “GAAP”), the accounts and transactions of the trusts are not included in the accompanying consolidated financial statements.
Nature of Operations	Nature of Operations – The Bank is a community-oriented financial institution which operates 17 branches in rural and suburban communities in southwest Washington State and Multnomah, Washington and Marion counties of Oregon. The Bank is engaged primarily in the business of attracting deposits from the general public and using such funds, together with other borrowings, to make various commercial business, commercial real estate, land, multi-family real estate, real estate construction and consumer loans. Additionally, the Trust Company offers trust and investment services and Riverview Services , Inc. acts as a trustee for deeds of trust on mortgage loans granted by the Bank and receives a reconveyance fee for each deed of trust.
Business segments	Business segments – The Company’s operations are managed along two operating segments, consisting of banking operations performed by the Bank and trust and investment services performed by the Trust Company. While the chief operating decision maker uses financial information related to these segments to analyze business performance and allocate resources, the trust and investment services segment does not meet the quantitative threshold under GAAP to be considered a reportable segment. As such, these operating segments are aggregated into a single reportable operating segment in the consolidated financial statements. No revenues are derived from foreign countries.
Use of Estimates in the Preparation of Consolidated Financial Statements	Use of Estimates in the Preparation of Consolidated Financial Statements – The preparation of consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of certain assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of related revenue and expense during the reporting period. Actual results could differ from those estimates. The estimates utilized to determine the appropriate allowance for loan losses at March 31, 2022 may be materially different from actual results due to the novel coronavirus of 2019 (“COVID-19”) pandemic.
Cash and Cash Equivalents	Cash and Cash Equivalents – Cash and cash equivalents include amounts on hand, due from banks and interest-earning deposits in other banks. Cash and cash equivalents have a maturity of 90 days or less at the time of purchase.
Certificates of Deposit Held for Investment	Certificates of Deposit Held for Investment – Certificates of deposit held for investment include amounts invested with financial institutions at a stated interest rate and maturity date. Early withdrawal penalties apply; however, the Company plans to hold these investments to maturity.
Investment Securities	Investment Securities – Investments in debt securities are classified as held to maturity when the Company has the ability and positive intent to hold such securities to maturity. Investments in debt securities held to maturity are carried at amortized cost. Unrealized losses on investments in debt securities held to maturity due to fluctuations in fair value are recognized when it is determined that a credit-related other than temporary decline in value has occurred. Investments in debt securities bought and held principally for the purpose of sale in the near-term are classified as trading securities. Investments in debt securities that the Company intends to hold for an indefinite period, but not necessarily to maturity, are classified as available for sale. Such debt securities may be sold to implement the Company’s asset/liability management strategies and in response to changes in interest rates and similar factors. Investments in debt securities available for sale are reported at estimated fair value. Unrealized gains and losses on investment securities available for sale, net of the related deferred tax effect, are included in total comprehensive income and are reported as a net amount in a separate component of shareholders’ equity entitled “accumulated other comprehensive income (loss).” Realized gains and losses on sales of investments in debt securities available for sale, determined using the specific identification method, are included in earnings on the trade date. Amortization of premiums and accretion of discounts are recognized in interest income over the period to contractual maturity or expected call, if sooner. The Company’s investment portfolio consists of debt securities and does not include any equity securities. The Company analyzes investments in debt securities for other than temporary impairment (“OTTI”) on a quarterly basis. OTTI is separated into a credit component and a noncredit component. Credit component losses are reported in non-interest income when the present value of expected future cash flows is less than the amortized cost. Noncredit component losses are recorded in other comprehensive income (loss) when the Company (1) does not intend to sell the security or (2) is not more likely than not to have to sell the security prior to the security’s anticipated recovery. If the Company is likely to sell an investment in a debt security, any noncredit component losses are recognized and are reported in non-interest income.
Loans Receivable	Loans Receivable – Loans are stated at the amount of unpaid principal, reduced by net deferred loan origination fees and an allowance for loan losses. Interest on loans is accrued daily based on the principal amount outstanding. Loans are reviewed regularly and it is the Company’s general policy that a loan is past due when it is 30 days to 89 days delinquent. In general, when a loan is 90 days delinquent or when collection of principal or interest appears doubtful, it is placed on non-accrual status, at which time the accrual of interest ceases and a reserve for unrecoverable accrued interest is established and charged against operations. As a general practice, payments received on non-accrual loans are applied to reduce the outstanding principal balance on a cost recovery method. Also, as a general practice, a loan is not removed from non-accrual status until all delinquent principal, interest and late fees have been brought current and the borrower has demonstrated a history of performance based upon the contractual terms of the note. A history of repayment performance generally would be a minimum of six months. In accordance with provisions of The Coronavirus Aid, Relief, and Economic Security Act of 2020 (the “CARES Act”) and the Consolidated Appropriations Act, 2021 (the “CAA 2021”) and related regulatory guidance, the Company did not designate loans with payment deferrals granted due to the COVID-19 pandemic as delinquent. Loan origination and commitment fees and certain direct loan origination costs are deferred and amortized as an adjustment of the yield of the related loan.
Acquired Loans	Acquired Loans – Purchased loans, including loans acquired in business combinations, are recorded at their estimated fair value at the acquisition date. Credit discounts are included in the determination of fair value; therefore, an allowance for loan losses is not recorded at the acquisition date. Acquired loans are evaluated upon acquisition and classified as either purchased credit-impaired (“PCI”) or purchased non-credit-impaired. PCI loans reflect credit deterioration since origination such that it is probable at acquisition that the Company will be unable to collect all contractually required payments. The excess of the cash flows expected to be collected over a PCI loan’s carrying value is considered to be the accretable yield and is recognized as interest income over the estimated life of the PCI loan using the effective yield method. The excess of the undiscounted contractual balances due over the cash flows expected to be collected is considered to be the nonaccretable difference. The nonaccretable difference represents the Company ’s estimate of the credit losses expected to occur and would be considered in determining the estimated fair value of the loans as of the acquisition date. Subsequent to the acquisition date, any increases in expected cash flows over those expected at the purchase date in excess of fair value are adjusted through a change to the accretable yield on a prospective basis. Any subsequent decreases in expected cash flows attributable to credit deterioration are recognized by recording an allowance for loan losses. The Company had no PCI loans as of March 31, 2022 and 2021. For purchased non-credit-impaired loans, the difference between the fair value and unpaid principal balance of the loan at the acquisition date is amortized or accreted to interest income over the lives of the related loans. Any subsequent deterioration in credit quality is recognized by recording an allowance for loan losses.
Allowance for Loan Losses	Allowance for Loan Losses – The allowance for loan losses is maintained at a level sufficient to provide for estimated loan losses based on evaluating known and inherent risks in the loan portfolio. The allowance is provided based upon management’s ongoing quarterly assessment of the pertinent factors underlying the quality of the loan portfolio. These factors include changes in the size and composition of the loan portfolio, delinquency levels, actual loan loss experience, current economic conditions and a detailed analysis of individual loans for which full collectability may not be assured. The detailed analysis includes techniques to estimate the fair value of loan collateral and the existence of potential alternative sources of repayment. The allowance consists of specific, general and unallocated components. The specific component relates to loans that are considered impaired. For loans that are classified as impaired, an allowance is established when the discounted cash flows or collateral value (less estimated selling costs, if applicable) of the impaired loan is lower than the carrying value of that loan. The general component covers non-impaired loans based on the Company’s risk rating system and historical loss experience adjusted for qualitative factors. The Company calculates its historical loss rates using the average of the last four quarterly 24-month periods. The Company calculates and applies its historical loss rates by individual loan types in its loan portfolio. These historical loss rates are adjusted for qualitative and environmental factors. An unallocated component is maintained to cover uncertainties that the Company believes have resulted in incurred losses that have not yet been allocated to specific elements of the general and specific components of the allowance for loan losses. Such factors include uncertainties in economic conditions, uncertainties in identifying triggering events that directly correlate to subsequent loss rates, changes in appraised value of underlying collateral, risk factors that have not yet manifested themselves in loss allocation factors and historical loss experience data that may not precisely correspond to the current loan portfolio or economic conditions. The unallocated component of the allowance reflects the margin of imprecision inherent in the underlying assumptions used in the methodologies for estimating specific and general losses in the loan portfolio. The appropriate allowance level is estimated based upon factors and trends identified by the Company as of the date of the filing of the consolidated financial statements. When available information confirms that specific loans or portions thereof are uncollectible, identified amounts are charged against the allowance for loan losses. The existence of some or all of the following criteria will generally confirm that a loss has been incurred: the loan is significantly delinquent and the borrower has not demonstrated the ability or intent to bring the loan current; the Company has no recourse to the borrower, or if it does, the borrower has insufficient assets to pay the debt; and/or the estimated fair value of the loan collateral is significantly below the current loan balance, and there is little or no near-term prospect for improvement. A loan is considered impaired when it is probable that the Company will be unable to collect all amounts when due (principal and interest) according to the contractual terms of the loan agreement. Typically, factors used in determining if a loan is impaired include, but are not limited to, whether the loan is 90 days or more delinquent, internally designated as substandard or worse, on non-accrual status or represents a troubled debt restructuring (“TDR”). The Company elected to apply the temporary relief under the CARES Act as extended by the CAA 2021 and related regulatory guidance to certain eligible short-term modifications, past due loans, and other modifications. Qualifying loan modifications entered into prior to January 1, 2022, were not classified as a TDR for accounting or disclosure purposes. Loans subject to forbearance under this COVID-19 loan modification program are not reported as past due or placed on non-accrual status during the forbearance time period, and interest income continues to be recognized over the contractual life of the loans. As of March 31, 2022, the Company had no remaining qualifying loan modifications related to the COVID-19 pandemic. The majority of the Company’s impaired loans are considered collateral dependent. When a loan is considered collateral dependent, impairment is measured using the estimated value of the underlying collateral, less any prior liens, and when applicable, less estimated selling costs. For impaired loans that are not collateral dependent, impairment is measured using the present value of expected future cash flows, discounted at the loan’s original effective interest rate. When the estimated net realizable value of the impaired loan is less than the recorded investment in the loan (including accrued interest, net deferred loan fees or costs, and unamortized premium or discount), an impairment is recognized by adjusting an allocation of the allowance for loan losses. Subsequent to the initial allocation of allowance to the individual loan, the Company may conclude that it is appropriate to record a charge-off of the impaired portion of the loan. When a charge-off is recorded, the loan balance is reduced and the specific allowance is eliminated. Generally, when a collateral dependent loan is initially measured for impairment and has not had an appraisal of the collateral in the last six months, the Company obtains an updated market valuation. Subsequently, the Company generally obtains an updated market valuation of the collateral on an annual basis. The collateral valuation may occur more frequently if the Company determines that there is an indication that the market value may have declined. In accordance with the Company’s policy guidelines, unsecured loans are generally charged-off when no payments have been received for three consecutive months unless an alternative action plan is in effect. Consumer installment loans delinquent six months or more that have not received at least 75% of their required monthly payments in the last 90 days are charged-off. In addition, loans discharged in bankruptcy proceedings are charged-off. Loans under bankruptcy protection with no payments received for four consecutive months are charged-off. The outstanding balance of a secured loan that is in excess of the net realizable value of the underlying collateral is generally charged-off if no payments are received for four to five consecutive months. However, charge-offs are postponed if alternative proposals to restructure, obtain additional guarantors, obtain additional assets as collateral or a potential sale of the underlying collateral would result in full repayment of the outstanding loan balance. Once any other potential sources of repayment are exhausted, the impaired portion of the loan is charged-off. Regardless of whether a loan is unsecured or collateralized, once an amount is determined to be a confirmed loan loss it is charged-off. A provision for loan losses is charged against income and is added to the allowance for loan losses based on regular assessments of the loan portfolio. The allowance for loan losses is allocated to certain loan categories based on the relative risk characteristics, asset classifications and actual loss experience of the loan portfolio. While management has allocated the allowance for loan losses to various loan portfolio segments, the allowance is general in nature and is available for the loan portfolio in its entirety. Management’s evaluation of the allowance for loan losses is based on ongoing, quarterly assessments of the known and inherent risks in the loan portfolio. Loss factors are based on the Company’s historical loss experience with additional consideration and adjustments made for changes in economic conditions, changes in the amount and composition of the loan portfolio, delinquency rates, changes in collateral values, seasoning of the loan portfolio, duration of the current business cycle, a detailed analysis of impaired loans and other factors as deemed appropriate. These factors are evaluated on a quarterly basis. Loss rates used by the Company are affected as changes in these factors increase or decrease from quarter to quarter. In addition, regulatory agencies, as an integral part of their examination process, periodically review the Company’s allowance for loan losses and may require the Company to make additions to the allowance based on their judgment about information available to them at the time of their examinations.
Allowance for Unfunded Loan Commitments	Allowance for Unfunded Loan Commitments – The allowance for unfunded loan commitments is maintained at a level believed by management to be sufficient to absorb estimated probable losses related to these unfunded credit facilities. The determination of the adequacy of the allowance is based on periodic evaluations of the unfunded credit facilities including an assessment of the probability of commitment usage, credit risk factors for loans outstanding to these same customers, and the terms and expiration dates of the unfunded credit facilities. The allowance for unfunded loan commitments is included in accrued expenses and other liabilities in the consolidated balance sheets, with changes to the balance charged against non-interest expense.
REO	REO – REO consists of properties acquired through foreclosure and is initially recorded at the estimated fair value of the properties, less estimated costs of disposal. At the time of foreclosure, specific charge-offs are taken against the allowance for loan losses based upon a detailed analysis of the fair value of collateral on the underlying loans on which the Company is in the process of foreclosing. Subsequently, the Company performs an evaluation of the properties and records a valuation allowance with an offsetting charge to REO expenses for any declines in value. Management considers third-party appraisals, as well as independent fair market value assessments from realtors or persons involved in selling real estate, in determining the estimated fair value of particular properties. In addition, as certain of these third-party appraisals and independent fair market value assessments are only updated periodically, changes in the values of specific properties may have occurred subsequent to the most recent appraisals. The amounts the Company will ultimately recover and record in the accompanying consolidated financial statements from the disposition of REO may differ from the amounts used in arriving at the net carrying value of these assets because of future market factors beyond the Company’s control or because of changes in the Company’s strategy for the sale of the property. Costs relating to development and improvement of the properties or assets are capitalized, while costs relating to holding the properties or assets are expensed. The Company held no REO at March 31, 2022 and 2021. At March 31, 2022, there were no mortgage loans secured by residential real estate for which formal foreclosure proceedings were in process.
Federal Home Loan Bank Stock	Federal Home Loan Bank Stock – The Bank, as a member of the Federal Home Loan Bank of Des Moines (“FHLB”), is required to maintain a minimum investment in capital stock of the FHLB based on specific percentages of its outstanding FHLB advances. The Company’s investment in FHLB stock is carried at cost, which approximates fair value. The Company views its investment in FHLB stock as a long-term investment. Accordingly, when evaluating FHLB stock for impairment, the value is determined based on the ultimate redemption of the par value rather than recognizing temporary declines in value. The determination of whether a decline affects the ultimate redemption value is influenced by criteria such as: (1) the significance of any decline in net assets of the FHLB as compared to the capital stock amount of the FHLB and the length of time this situation has persisted, (2) commitments by the FHLB to make payments required by law or regulation and the level of such payments in relation to the operating performance of the FHLB, (3) the impact of legislative and regulatory changes on institutions and, accordingly, the customer base of the FHLB, and (4) the liquidity position of the FHLB. The Company evaluated its investment in FHLB stock for OTTI, consistent with its accounting policy. Based on the Company’s evaluation, the Company determined there is not any OTTI on its FHLB stock at March 31, 2022.
Premises and Equipment	Premises and Equipment – Premises and equipment are stated at cost less accumulated depreciation and amortization. Leasehold improvements are amortized over the estimated term of the related lease or the estimated useful life of the improvements, whichever is less. Depreciation and amortization is generally computed on the straight-line method over the following estimated useful lives: buildings and improvements – up to 45 years ; furniture and equipment – 3 to 20 years ; and leasehold improvements – 15 to 25 years , or estimated lease term if shorter. Gains or losses on dispositions are reflected in earnings. The cost of maintenance and repairs is charged to expense as incurred. Assets are reviewed for impairment when events indicate their carrying value may not be recoverable. If management determines impairment exists the asset is reduced by an offsetting charge to expense. The assets held under the finance lease are amortized on a straight-line basis over the lease term and the amortization is included in depreciation and amortization expense.
Mortgage Servicing Rights ("MSRs")	Mortgage Servicing Rights (“MSRs”) – The Company services certain loans that it has originated and sold to the Federal Home Loan Mortgage Corporation (“FHLMC”) . Loan servicing includes collecting payments; remitting funds to investors, insurance companies and tax authorities; collecting delinquent payments; and foreclosing on properties when necessary. Fees earned for servicing loans for the FHLMC are reported as income when the related mortgage loan payments are collected. Loan servicing costs are charged to expense as incurred. In addition, the Company has recorded MSRs, which represent the rights to service loans. The Company records its originated MSRs at fair value in accordance with GAAP, which requires the Company to allocate the total cost of all mortgage loans sold between the MSRs and the loans (without the MSRs) based on their relative fair values if it is practicable to estimate those fair values. The Company stratifies its MSRs based on the predominant characteristics of the underlying financial assets including the coupon interest rate and the contractual maturity of the mortgage. The Company is amortizing the MSRs in proportion to and over the period of estimated net servicing income. MSRs were not significant at both March 31, 2022 and 2021.
Business Combinations, CDI and Goodwill	Business Combinations, CDI and Goodwill – GAAP requires the total purchase price in a business combination to be allocated to the estimated fair values of assets acquired and liabilities assumed, including certain intangible assets. Subsequent adjustments to the initial allocation of the purchase price may be made related to fair value estimates for which all relevant information has not been obtained, known, or discovered relating to the acquired entity during the allocation period (which is the period of time required to identify and measure the estimated fair values of the assets acquired and liabilities assumed in a business combination). The allocation period is generally limited to one year following consummation of a business combination. CDI represents the value assigned to demand, interest checking, money market and savings accounts acquired as part of a business combination. CDI represents the future economic benefit of the potential cost savings from acquiring core deposits as part of a business combination compared to the cost of alternative funding sources. CDI is amortized to non-interest expense using an accelerated method based on an estimated runoff of related deposits over a period of ten years . CDI is evaluated for impairment and recoverability whenever events or changes in circumstances indicate that its carrying amount may not be recoverable, with any changes in estimated useful life accounted for prospectively over the revised remaining life. At both March 31, 2022 and 2021, gross CDI was $1.4 million. At March 31, 2022 and 2021, accumulated amortization was $868,000 and $744,000 , respectively. The amortization expense for CDI in future years is estimated to be $116,000 , $108,000 , $100,000 , $93,000 , and $78,000 for the years ending March 31, 2023, 2024, 2025, 2026, and 2027, respectively. Goodwill and certain other intangibles generally arise from business combinations. Goodwill and other intangibles generated from business combinations that are deemed to have indefinite lives are not subject to amortization and are instead tested for impairment not less than annually. The Company performs an annual review in the third quarter of each year, or more frequently if indicators of potential impairment exist, to determine if the recorded goodwill is impaired (see Note 7).
BOLI	BOLI – BOLI policies are recorded at their cash surrender value less applicable surrender charges. Income from BOLI is recognized when earned.
Advertising and Marketing	Advertising and Marketing – Costs incurred for advertising, merchandising, market research, community investment and business development are classified as advertising and marketing expense and are expensed as incurred.
Income Taxes	Income Taxes – Income taxes are accounted for using the asset and liability method. Under this method, a deferred tax asset or liability is determined based on the enacted tax rates which will be in effect when the differences between the financial statement carrying amounts and tax basis of existing assets and liabilities are expected to be reported in the Company’s income tax returns. The effect on deferred taxes of a change in tax rates is recognized in income in the period that includes the enactment date. Valuation allowances are established to reduce the net carrying amount of deferred tax assets if it is determined to be more likely than not that all or some portion of the potential deferred tax asset will not be realized. The Company files a consolidated federal income tax return. The Bank provides for income taxes separately and remits to the Company amounts currently due.
Transfer of financial assets	Transfers of financial assets – Transfers of financial assets are accounted for as sales when control over the assets has been surrendered. Control over transferred assets is deemed to be surrendered when (1) the assets have been isolated from the Company, (2) the transferee obtains the right (free of conditions that constrain it from taking advantage of that right) to pledge or exchange the transferred assets, and (3) the Company does not maintain effective control over the transferred assets through an agreement to repurchase them before their maturity.
Trust Assets	Trust Assets – Assets held by the Trust Company in a fiduciary or agency capacity for trust customers are not included in the consolidated financial statements because such items are not assets of the Company. Assets totaling $1.3 billion were held in trust as of both March 31, 2022 and 2021.
Earnings Per Share	Earnings Per Share – GAAP requires all companies whose capital structure includes dilutive potential common shares to make a dual presentation of basic and diluted earnings per share for all periods presented. The Company’s basic earnings per share is computed by dividing net income available to common shareholders by the weighted average number of common shares outstanding for the period , without consideration of any dilutive items. Nonvested shares of restricted stock are included in the computation of basic earnings per share because the holder has voting rights and shares in non-forfeitable dividends during the vesting period. The Company’s diluted earnings per share reflects the potential dilution that could occur if securities or other contracts to issue common stock were exercised and has been computed after giving consideration to the weighted average diluted effect of the Company’s stock options.
Stock-Based Compensation	Stock-Based Compensation – The Company measures compensation cost for all stock-based awards based on the grant-date fair value of the awards and recognizes compensation cost over the service period of stock-based awards. The fair value of stock options is determined using the Black-Scholes valuation model. The fair value of restricted stock is determined based on the grant date fair value of the Company’s common stock.
Accounting Pronouncements Recently Issued or Adopted	Accounting Pronouncements Recently Issued or Adopted – In June 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2016-13, “Financial Instruments – Credit Losses: Measurement of Credit Losses on Financial Instruments” (“ASU 2016-13”) as amended by ASU 2018-19, ASU 2019-04, ASU 2019-05, ASU 2019-10 and ASU 2019-11. ASU 2016-13 replaces the existing incurred losses methodology for estimating allowances with a current expected credit losses (“CECL”) methodology with respect to most financial assets measured at amortized cost and certain other instruments, including trade and other receivables, loans, held to maturity investment securities and off-balance sheet commitments. In addition, ASU 2016-13 requires credit losses relating to available for sale debt securities to be recorded through an allowance for credit losses rather than as a reduction of carrying amount. ASU 2016-13 also changes the accounting for purchased credit impaired debt securities and loans. ASU 2016-13 retains many of the current disclosure requirements in GAAP and expands certain disclosure requirements. As a “smaller reporting company” filer with the U.S. Securities and Exchange Commission, ASU 2016-13 is effective for the Company for fiscal years beginning after December 15, 2022, including interim periods within those fiscal years. Upon adoption, the Company expects a change in the processes and procedures to calculate the allowance for loan losses, including changes in assumptions and estimates to consider expected credit losses over the life of the loan versus the current accounting practice that utilizes the incurred loss model. In addition, the current accounting policy and procedures for OTTI of investment securities available for sale will be replaced with an allowance approach. The Company is reviewing the requirements of ASU 2016-13 and has begun developing and implementing processes and procedures to ensure it is fully compliant with the amendments at the adoption date. At this time, management anticipates the allowance for loan losses will change as a result of the implementation of ASU 2016-13; however, until management's evaluation is complete, the magnitude of the change will not be known. In March 2022, the FASB issued ASU 2022-02, "Financial Instruments – Credit Losses (Topic 326), Troubled Debt Restructurings and Vintage Disclosures" ("ASU 2022-02"). ASU 2022-02 eliminates the accounting guidance for TDRs in Accounting Standards Codification (“ASC”) 310-40, "Receivables - Troubled Debt Restructurings by Creditors" for entities that have adopted the CECL model introduced by ASU 2016-13. ASU 2022-02 also requires that public business entities disclose current-period gross charge-offs by year of origination for financing receivables and net investments in leases within the scope of ASC 326-20, "Financial Instruments—Credit Losses—Measured at Amortized Cost". In January 2017, the FASB issued ASU 2017-04, “Intangibles – Goodwill and Other: Simplifying the Test for Goodwill Impairment” (“ASU 2017-04”). ASU 2017-04 simplifies the subsequent measurement of goodwill and eliminates Step 2 from the goodwill impairment test. In computing the implied fair value of goodwill under Step 2, an entity had to perform procedures to determine the fair value at the impairment testing date of its assets and liabilities (including unrecognized assets and liabilities) following the procedure that would be required in determining the fair value of assets acquired and liabilities assumed in a business combination. Under ASU 2017-04, an entity should perform its annual, or interim, goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount. An entity should recognize an impairment charge for the amount by which the carrying amount exceeds the reporting unit’s fair value; however, the loss recognized should not exceed the total amount of goodwill allocated to that reporting unit. Additionally, an entity should consider income tax effects from any tax-deductible goodwill on the carrying amount of the reporting unit when measuring the goodwill impairment loss, if applicable. ASU 2017-04 is effective for annual or interim goodwill impairment tests in fiscal years beginning after December 15, 2022. Early application of ASU 2017-04 is permitted for interim or annual goodwill impairment tests performed on testing dates after January 1, 2017. The adoption of ASU 2017-04 is not expected to have a material impact on the Company's future consolidated financial statements. In March 2020, the FASB issued ASU 2020-04, "Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting" ("ASU 2020-04"), as amended by ASU 2021-01. ASU 2020-04 applies to contracts, hedging relationships and other transactions that reference LIBOR or other rate references expected to be discontinued because of reference rate reform. ASU 2020-04 permits an entity to make necessary modifications to eligible contracts or transactions without requiring contract remeasurement or reassessment of a previous accounting determination. The Company's current interest rates on its junior subordinated debentures are based upon the three-month LIBOR plus a spread. ASU 2020-04 also provides certain optional expedients and exceptions in Topic 848 for contract modifications and hedge accounting apply to derivatives that are affected by the discounting transition. ASU 2020-04 also amends the expedients and exceptions in Topic 848 to capture the incremental consequences of the scope clarification. The amendments in ASU 2020-04 have differing effective dates, beginning with interim periods including and subsequent to March 12, 2020 through December 31, 2022. The Company has not adopted ASU 2020-04 as of March 31, 2022. The adoption of ASU 2020-04 is not expected to have a material impact on the Company's future consolidated financial statements.
Reclassifications	Reclassifications – Certain prior period amounts have been reclassified to conform to the current period presentation; such reclassifications had no effect on previously reported net income or total shareholders’ equity.

INVESTMENT SECURITIES (Tables)

INVESTMENT SECURITIES (Tables)	12 Months Ended
	Mar. 31, 2022
INVESTMENT SECURITIES
Schedule of amortized cost and approximate fair value of investment securities	The amortized cost and approximate fair value of investment securities consisted of the following at the dates indicated (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Gross Gross Estimated ​ ​ Amortized ​ Unrealized ​ Unrealized ​ Fair ​ ​ Cost ​ Gains ​ Losses ​ Value March 31, 2022 ​ ​ ​ ​ Available for sale: ​ ​ ​ ​ ​ Municipal securities ​ $ 44,104 ​ $ 14 ​ $ (4,514) ​ $ 39,604 Agency securities ​ 43,848 ​ ​ 1 ​ ​ (3,144) ​ ​ 40,705 Real estate mortgage investment conduits (1) ​ 35,563 ​ ​ 1 ​ ​ (2,847) ​ ​ 32,717 Residential mortgage-backed securities (1) ​ 17,368 ​ ​ 13 ​ ​ (436) ​ ​ 16,945 Other mortgage-backed securities (2) ​ 37,991 ​ ​ 28 ​ ​ (2,208) ​ ​ 35,811 Total available for sale ​ $ 178,874 ​ $ 57 ​ $ (13,149) ​ $ 165,782 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Held to maturity: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Municipal securities ​ $ 10,368 ​ $ — ​ $ (1,422) ​ $ 8,946 Agency securities ​ ​ 45,277 ​ ​ — ​ ​ (2,450) ​ ​ 42,827 Real estate mortgage investment conduits (1) ​ ​ 39,394 ​ ​ — ​ ​ (2,457) ​ ​ 36,937 Residential mortgage-backed securities (1) ​ ​ 137,343 ​ ​ — ​ ​ (8,883) ​ ​ 128,460 Other mortgage-backed securities (3) ​ ​ 20,718 ​ ​ — ​ ​ (1,859) ​ ​ 18,859 Total held to maturity ​ $ 253,100 ​ $ — ​ $ (17,071) ​ $ 236,029 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Gross Gross ​ ​ ​ ​ Amortized ​ Unrealized ​ Unrealized ​ Estimated ​ ​ Cost ​ Gains ​ Losses ​ Fair Value March 31, 2021 ​ ​ ​ ​ Available for sale: ​ ​ ​ ​ Municipal securities ​ $ 23,883 ​ $ 238 ​ $ (555) ​ $ 23,566 Agency securities ​ 25,996 ​ ​ 5 ​ ​ (686) ​ ​ 25,315 Real estate mortgage investment conduits (1) ​ 55,826 ​ ​ 469 ​ ​ (480) ​ ​ 55,815 Residential mortgage-backed securities (1) ​ 71,787 ​ ​ 1,075 ​ ​ (614) ​ ​ 72,248 Other mortgage-backed securities (2) ​ 39,022 ​ ​ 514 ​ ​ (176) ​ ​ 39,360 Total available for sale ​ $ 216,514 ​ $ 2,301 ​ $ (2,511) ​ $ 216,304 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Held to maturity: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Municipal securities ​ $ 10,391 ​ $ — ​ $ (509) ​ $ 9,882 Agency securities ​ ​ 7,688 ​ ​ — ​ ​ (220) ​ ​ 7,468 Real estate mortgage investment conduits (1) ​ ​ 9,207 ​ ​ — ​ ​ (141) ​ ​ 9,066 Residential mortgage-backed securities (3) ​ ​ 6,175 ​ ​ — ​ ​ (119) ​ ​ 6,056 Other mortgage-backed securities (2) ​ ​ 6,113 ​ ​ — ​ ​ (365) ​ ​ 5,748 Total held to maturity ​ $ 39,574 ​ $ — ​ $ (1,354) ​ $ 38,220 ​ (1) Comprised of FHLMC, Federal National Mortgage Association (“FNMA”) and Ginnie Mae (“GNMA”) issued securities. (2) Comprised of U.S. Small Business Administration (“SBA”) issued securities and commercial real estate (“CRE”) secured securities issued by FNMA and FHLMC. (3) Comprised of FHLMC and FNMA issued securities .
Schedule of contractual maturities of investment securities	The contractual maturities of investment securities as of March 31, 2022 are as follows (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Available for Sale ​ Held to Maturity ​ ​ ​ Estimated ​ ​ Estimated ​ ​ Amortized ​ Fair ​ Amortized ​ Fair ​ ​ Cost ​ Value ​ Cost ​ Value Due in one year or less ​ $ 2,002 ​ $ 2,004 ​ $ — ​ $ — Due after one year through five years ​ 14,073 ​ 13,339 ​ 24,344 ​ 23,559 Due after five years through ten years ​ 63,995 ​ 59,735 ​ 39,407 ​ 36,305 Due after ten years ​ 98,804 ​ 90,704 ​ 189,349 ​ 176,165 Total ​ $ 178,874 ​ $ 165,782 ​ $ 253,100 ​ $ 236,029
Schedule of temporarily impaired securities, fair value and unrealized losses	​ The fair value of temporarily impaired investment securities, the amount of unrealized losses and the length of time these unrealized losses existed are as follows at the dates indicated (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Less than 12 months ​ 12 months or longer ​ Total ​ Estimated ​ ​ Estimated ​ ​ Estimated ​ ​ ​ ​ Fair ​ Unrealized ​ Fair ​ Unrealized ​ Fair ​ Unrealized March 31, 2022 ​ Value ​ Losses ​ Value ​ Losses ​ Value ​ Losses ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Available for sale: ​ ​ ​ ​ ​ ​ Municipal securities ​ $ 32,767 ​ $ (4,293) ​ $ 3,282 ​ $ (221) ​ $ 36,049 ​ $ (4,514) Agency securities ​ 22,288 ​ (1,565) ​ 16,414 ​ (1,579) ​ 38,702 ​ (3,144) Real estate mortgage investment conduits (1) ​ 17,334 ​ (1,310) ​ 15,275 ​ (1,537) ​ 32,609 ​ (2,847) Residential mortgage-backed securities (1) ​ 15,702 ​ (436) ​ — ​ — ​ 15,702 ​ (436) Other mortgage-backed securities (2) ​ 32,408 ​ (2,194) ​ 769 ​ (14) ​ 33,177 ​ (2,208) Total available for sale ​ $ 120,499 ​ $ (9,798) ​ $ 35,740 ​ $ (3,351) ​ $ 156,239 ​ $ (13,149) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Held to maturity: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Municipal securities ​ $ 5,911 ​ $ (816) ​ $ 3,036 ​ $ (606) ​ $ 8,947 ​ $ (1,422) Agency securities ​ ​ 35,930 ​ ​ (1,708) ​ ​ 6,897 ​ ​ (742) ​ ​ 42,827 ​ ​ (2,450) Real estate mortgage investment conduits (1) ​ ​ 26,233 ​ ​ (1,715) ​ ​ 7,735 ​ ​ (742) ​ ​ 33,968 ​ ​ (2,457) Residential mortgage-backed securities (1) ​ ​ 111,096 ​ ​ (7,160) ​ ​ 17,363 ​ ​ (1,723) ​ ​ 128,459 ​ ​ (8,883) Other mortgage-backed securities (3) ​ ​ 13,472 ​ ​ (1,153) ​ ​ 5,386 ​ ​ (706) ​ ​ 18,858 ​ ​ (1,859) Total held to maturity ​ $ 192,642 ​ $ (12,552) ​ $ 40,417 ​ $ (4,519) ​ $ 233,059 ​ $ (17,071) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Available for sale: ​ ​ ​ ​ ​ ​ Municipal securities ​ $ 17,529 ​ $ (555) ​ $ — ​ $ — ​ $ 17,529 ​ $ (555) Agency securities ​ ​ 23,306 ​ ​ (686) ​ ​ — ​ ​ — ​ ​ 23,306 ​ ​ (686) Real estate mortgage investment conduits (1) ​ 25,462 ​ ​ (480) ​ ​ — ​ ​ — ​ ​ 25,462 ​ ​ (480) Residential mortgage-backed securities (1) ​ 33,164 ​ (614) ​ — ​ ​ — ​ ​ 33,164 ​ (614) Other mortgage-backed securities (6) ​ 5,856 ​ ​ (125) ​ ​ 2,225 ​ ​ (51) ​ ​ 8,081 ​ ​ (176) Total available for sale ​ $ 105,317 ​ $ (2,460) ​ $ 2,225 ​ $ (51) ​ $ 107,542 ​ $ (2,511) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Held to maturity: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Municipal securities ​ $ 9,882 ​ $ (509) ​ $ — ​ $ — ​ $ 9,882 ​ $ (509) Agency securities ​ ​ 7,468 ​ ​ (220) ​ ​ — ​ ​ — ​ ​ 7,468 ​ ​ (220) Real estate mortgage investment conduits (4) ​ ​ 9,066 ​ ​ (141) ​ ​ — ​ ​ — ​ ​ 9,066 ​ ​ (141) Residential mortgage-backed securities (5) ​ ​ 6,035 ​ ​ (119) ​ ​ — ​ ​ — ​ ​ 6,035 ​ ​ (119) Other mortgage-backed securities (3) ​ ​ 5,748 ​ ​ (365) ​ ​ — ​ ​ — ​ ​ 5,748 ​ ​ (365) Total held to maturity ​ $ 38,199 ​ $ (1,354) ​ $ — ​ $ — ​ $ 38,199 ​ $ (1,354) ​ (1) Comprised of FHLMC, FNMA and GNMA issued securities. (2) Comprised of SBA and CRE secured securities iss ued by FHLMC and FNMA. (3) Comprised of CRE secured securities issued by FHLMC and FNMA . (4) Comprised of FNMA issued securities. (5) Comprised of FHLMC and FNMA issued securities. (6) Comprised of SBA issued securities. ​

LOANS RECEIVABLE (Tables)

LOANS RECEIVABLE (Tables)	12 Months Ended
	Mar. 31, 2022
LOANS RECEIVABLE
Schedule of loans and financing receivable	​ ​ ​ ​ ​ ​ ​ ​ March 31, March 31, ​ ​ 2022 ​ 2021 Commercial and construction ​ ​ Commercial business (1) ​ $ 228,091 ​ $ 265,145 Commercial real estate ​ 582,837 ​ ​ 543,467 Land ​ 11,556 ​ ​ 14,040 Multi-family ​ 60,211 ​ ​ 45,014 Real estate construction ​ 24,160 ​ ​ 16,990 Total commercial and construction ​ 906,855 ​ ​ 884,656 ​ ​ ​ ​ ​ ​ ​ Consumer ​ ​ ​ ​ ​ Real estate one-to-four family ​ 82,006 ​ ​ 56,405 Other installment ​ 1,547 ​ ​ 2,174 Total consumer ​ 83,553 ​ ​ 58,579 ​ ​ ​ ​ ​ ​ ​ Total loans ​ 990,408 ​ ​ 943,235 ​ ​ ​ ​ ​ ​ ​ Less: Allowance for loan losses ​ 14,523 ​ ​ 19,178 Loans receivable, net ​ $ 975,885 ​ $ 924,057 ​ (1) SBA PPP loans totaled $3.1 million at March 31, 2022 and $93.4 million at March 31, 2021.
Schedule of aggregate loans to officers and directors	​ Aggregate loans to officers and directors, all of which are current, consisted of the following for the periods indicated (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year Ended March 31, ​ 2022 2021 2020 Beginning balance ​ $ 5,308 ​ $ 625 ​ $ 778 Originations ​ 32 ​ 8,174 ​ 977 Principal repayments ​ (1,550) ​ (3,491) ​ (1,130) Ending balance ​ $ 3,790 ​ $ 5,308 ​ $ 625 ​

ALLOWANCE FOR LOAN LOSSES (Tabl

ALLOWANCE FOR LOAN LOSSES (Tables)	12 Months Ended
	Mar. 31, 2022
ALLOWANCE FOR LOAN LOSSES
Schedule of reconciliation of the allowance for loan losses	The following tables present a reconciliation of the allowance for loan losses for the periods indicated (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial Commercial ​ ​ Multi- Real Estate ​ ​ ​ ​ ​ ​ March 31, 2022 ​ Business ​ Real Estate ​ Land ​ Family ​ Construction ​ Consumer ​ Unallocated ​ Total ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Beginning balance ​ $ 2,416 ​ $ 14,089 ​ $ 233 ​ $ 638 ​ $ 294 ​ $ 852 ​ $ 656 ​ $ 19,178 Provision for (recapture of) loan losses ​ 75 ​ ​ (5,052) ​ ​ (65) ​ ​ 207 ​ ​ 99 ​ ​ 52 ​ ​ 59 ​ ​ (4,625) Charge-offs ​ (69) ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ (17) ​ ​ — ​ ​ (86) Recoveries ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ 56 ​ ​ — ​ ​ 56 Ending balance ​ $ 2,422 ​ $ 9,037 ​ $ 168 ​ $ 845 ​ $ 393 ​ $ 943 ​ $ 715 ​ $ 14,523 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Beginning balance ​ $ 2,008 ​ $ 6,421 ​ $ 230 ​ $ 854 ​ $ 1,149 ​ $ 1,363 ​ $ 599 ​ $ 12,624 Provision for (recapture of) loan losses ​ 398 ​ 7,336 ​ 3 ​ (216) ​ (855) ​ (423) ​ 57 ​ 6,300 Charge-offs ​ — ​ — ​ — ​ — ​ — ​ (124) ​ — ​ (124) Recoveries ​ 10 ​ 332 ​ — ​ — ​ — ​ 36 ​ — ​ 378 Ending balance ​ $ 2,416 ​ $ 14,089 ​ $ 233 ​ $ 638 ​ $ 294 ​ $ 852 ​ $ 656 ​ $ 19,178 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2020 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Beginning balance ​ $ 1,808 ​ $ 5,053 ​ $ 254 ​ $ 728 ​ $ 1,457 ​ $ 1,447 ​ $ 710 ​ $ 11,457 Provision for (recapture of) loan losses ​ 264 ​ 1,368 ​ (24) ​ 126 ​ (308) ​ (65) ​ (111) ​ 1,250 Charge-offs ​ (64) ​ — ​ — ​ — ​ — ​ (82) ​ — ​ (146) Recoveries ​ — ​ — ​ — ​ — ​ — ​ 63 ​ — ​ 63 Ending balance ​ $ 2,008 ​ $ 6,421 ​ $ 230 ​ $ 854 ​ $ 1,149 ​ $ 1,363 ​ $ 599 ​ $ 12,624
Schedule of impaired financing receivables	The following tables present an analysis of loans receivable and the allowance for loan losses, based on impairment methodology, at the dates indicated (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Allowance for Loan Losses ​ Recorded Investment in Loans ​ Individually Collectively ​ ​ Individually Collectively ​ ​ ​ ​ Evaluated ​ Evaluated ​ ​ ​ ​ Evaluated ​ Evaluated ​ ​ ​ ​ ​ for ​ for ​ ​ ​ ​ for ​ for ​ ​ ​ March 31, 2022 ​ Impairment ​ Impairment ​ Total ​ Impairment ​ Impairment ​ Total ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial business ​ $ — ​ $ 2,422 ​ $ 2,422 ​ $ 100 ​ $ 227,991 ​ $ 228,091 Commercial real estate ​ — ​ 9,037 ​ ​ 9,037 ​ ​ 122 ​ ​ 582,715 ​ ​ 582,837 Land ​ — ​ 168 ​ ​ 168 ​ ​ — ​ ​ 11,556 ​ ​ 11,556 Multi-family ​ — ​ 845 ​ ​ 845 ​ ​ — ​ ​ 60,211 ​ ​ 60,211 Real estate construction ​ — ​ 393 ​ ​ 393 ​ ​ — ​ ​ 24,160 ​ ​ 24,160 Consumer ​ 8 ​ 935 ​ ​ 943 ​ ​ 495 ​ ​ 83,058 ​ ​ 83,553 Unallocated ​ — ​ 715 ​ ​ 715 ​ ​ — ​ ​ — ​ ​ — Total ​ $ 8 ​ $ 14,515 ​ $ 14,523 ​ $ 717 ​ $ 989,691 ​ $ 990,408 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial business ​ $ — ​ $ 2,416 ​ $ 2,416 ​ $ 120 ​ $ 265,025 ​ $ 265,145 Commercial real estate ​ — ​ 14,089 ​ 14,089 ​ 1,468 ​ 541,999 ​ 543,467 Land ​ — ​ 233 ​ 233 ​ 710 ​ 13,330 ​ 14,040 Multi-family ​ — ​ 638 ​ 638 ​ 753 ​ 44,261 ​ 45,014 Real estate construction ​ — ​ 294 ​ 294 ​ — ​ 16,990 ​ 16,990 Consumer ​ 11 ​ 841 ​ 852 ​ 530 ​ 58,049 ​ 58,579 Unallocated ​ — ​ 656 ​ 656 ​ — ​ — ​ — Total ​ $ 11 ​ $ 19,167 ​ $ 19,178 ​ $ 3,581 ​ $ 939,654 ​ $ 943,235 ​
Schedule of changes in the allowance for unfunded loan commitments	Changes in the allowance for unfunded loan commitments were as follows for the years indicated (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year Ended March 31, ​ 2022 2021 2020 Beginning balance ​ $ 509 ​ $ 474 ​ $ 469 Net change in allowance for unfunded loan commitments ​ (85) ​ 35 ​ 5 Ending balance ​ $ 424 ​ $ 509 ​ $ 474
Schedule of analysis of loans by aging category	The following tables present an analysis of loans by aging category at the dates indicated (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Total ​ ​ ​ ​ ​ ​ ​ ​ ​ 90 Days ​ ​ ​ ​ Past ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ and ​ ​ ​ ​ Due and ​ ​ ​ ​ Total ​ ​ 30-89 Days ​ Greater ​ ​ ​ ​ Non- ​ ​ ​ ​ Loans March 31, 2022 ​ Past Due ​ Past Due ​ Non-accrual ​ accrual ​ Current ​ Receivable ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial business ​ $ 7,753 ​ $ 21,808 ​ $ 118 ​ $ 29,679 ​ $ 198,412 ​ $ 228,091 Commercial real estate ​ — ​ — ​ 122 ​ ​ 122 ​ ​ 582,715 ​ ​ 582,837 Land ​ — ​ — ​ — ​ ​ — ​ ​ 11,556 ​ ​ 11,556 Multi-family ​ — ​ — ​ — ​ ​ — ​ ​ 60,211 ​ ​ 60,211 Real estate construction ​ 291 ​ — ​ — ​ ​ 291 ​ ​ 23,869 ​ ​ 24,160 Consumer ​ 9 ​ — ​ 51 ​ ​ 60 ​ ​ 83,493 ​ ​ 83,553 Total ​ $ 8,053 ​ $ 21,808 ​ $ 291 ​ $ 30,152 ​ $ 960,256 ​ $ 990,408 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial business ​ $ 98 ​ $ 175 ​ $ 182 ​ $ 455 ​ $ 264,690 ​ $ 265,145 Commercial real estate ​ — ​ — ​ 144 ​ 144 ​ 543,323 ​ 543,467 Land ​ — ​ — ​ — ​ — ​ 14,040 ​ 14,040 Multi-family ​ — ​ — ​ — ​ — ​ 45,014 ​ 45,014 Real estate construction ​ — ​ — ​ — ​ — ​ 16,990 ​ 16,990 Consumer ​ 143 ​ 1 ​ 69 ​ 213 ​ 58,366 ​ 58,579 Total ​ $ 241 ​ $ 176 ​ $ 395 ​ $ 812 ​ $ 942,423 ​ $ 943,235
Schedule of credit quality indicators	The following tables present an analysis of loans by credit quality indicators at the dates indicated (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Total ​ ​ ​ ​ ​ Special ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Loans March 31, 2022 ​ Pass ​ Mention ​ Substandard ​ Doubtful ​ Loss ​ Receivable ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial business ​ $ 227,435 ​ $ 511 ​ $ 145 ​ $ — ​ $ — ​ $ 228,091 Commercial real estate ​ 569,417 ​ ​ 7,211 ​ ​ 6,209 ​ — ​ — ​ 582,837 Land ​ 11,556 ​ ​ — ​ ​ — ​ — ​ — ​ 11,556 Multi-family ​ 60,138 ​ ​ 73 ​ ​ — ​ — ​ — ​ 60,211 Real estate construction ​ 24,160 ​ ​ — ​ ​ — ​ — ​ — ​ 24,160 Consumer ​ 83,502 ​ ​ — ​ ​ 51 ​ — ​ — ​ 83,553 Total ​ $ 976,208 ​ $ 7,795 ​ $ 6,405 ​ $ — ​ $ — ​ $ 990,408 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial business ​ $ 264,564 ​ $ 399 ​ $ 182 ​ $ — ​ $ — ​ $ 265,145 Commercial real estate ​ 494,010 ​ ​ 42,045 ​ ​ 7,412 ​ — ​ — ​ 543,467 Land ​ 14,040 ​ ​ — ​ ​ — ​ — ​ — ​ 14,040 Multi-family ​ 44,941 ​ ​ 49 ​ ​ 24 ​ — ​ — ​ 45,014 Real estate construction ​ 16,990 ​ ​ — ​ ​ — ​ — ​ — ​ 16,990 Consumer ​ 58,510 ​ ​ — ​ ​ 69 ​ — ​ — ​ 58,579 Total ​ $ 893,055 ​ $ 42,493 ​ $ 7,687 ​ $ — ​ $ — ​ $ 943,235
Schedule of total and average recorded investment in impaired loans	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Recorded Recorded ​ ​ ​ ​ ​ ​ ​ ​ Investment ​ Investment ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ with ​ with ​ ​ ​ ​ ​ ​ ​ Related ​ ​ No Specific ​ Specific ​ Total ​ Unpaid ​ Specific ​ ​ Valuation ​ Valuation ​ Recorded ​ Principal ​ Valuation March 31, 2022 ​ Allowance ​ Allowance ​ Investment ​ Balance ​ Allowance ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial business ​ $ 100 ​ $ — ​ $ 100 ​ $ 143 ​ $ — Commercial real estate ​ 122 ​ ​ — ​ ​ 122 ​ ​ 178 ​ — Land ​ — ​ ​ — ​ ​ — ​ ​ — ​ — Multi-family ​ — ​ ​ — ​ ​ — ​ ​ — ​ — Consumer ​ 259 ​ ​ 236 ​ ​ 495 ​ ​ 603 ​ 8 Total ​ $ 481 ​ $ 236 ​ $ 717 ​ $ 924 ​ $ 8 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial business ​ $ 120 ​ $ — ​ $ 120 ​ $ 157 ​ $ — Commercial real estate ​ 1,468 ​ ​ — ​ ​ 1,468 ​ ​ 1,556 ​ — Land ​ 710 ​ ​ — ​ ​ 710 ​ ​ 740 ​ — Multi-family ​ 753 ​ ​ — ​ ​ 753 ​ ​ 856 ​ — Consumer ​ 278 ​ ​ 252 ​ ​ 530 ​ ​ 643 ​ 11 Total ​ $ 3,329 ​ $ 252 ​ $ 3,581 ​ $ 3,952 ​ $ 11 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year ended ​ Year ended ​ Year ended ​ ​ March 31, 2022 ​ March 31, 2021 ​ March 31, 2020 ​ ​ ​ Interest ​ ​ Interest ​ ​ Interest ​ ​ ​ ​ ​ Recognized ​ ​ ​ ​ Recognized ​ ​ ​ ​ Recognized ​ ​ Average ​ on ​ Average ​ on ​ Average ​ on ​ ​ Recorded ​ Impaired ​ Recorded ​ Impaired ​ Recorded ​ Impaired ​ ​ Investment Loans ​ Investment Loans ​ Investment Loans ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial business ​ $ 110 ​ $ — ​ $ 130 ​ $ — ​ $ 150 ​ $ 62 Commercial real estate ​ 660 ​ ​ 16 ​ ​ 2,008 ​ ​ 61 ​ ​ 2,420 ​ ​ 40 Land ​ — ​ ​ — ​ ​ 713 ​ ​ 40 ​ ​ 720 ​ ​ 90 Multi-family ​ — ​ ​ — ​ ​ 1,313 ​ ​ 77 ​ ​ 1,573 ​ ​ — Consumer ​ 514 ​ ​ 24 ​ ​ 494 ​ ​ 29 ​ ​ 494 ​ ​ 29 Total ​ $ 1,284 ​ $ 40 ​ $ 4,658 ​ $ 207 ​ $ 5,357 ​ $ 221
Schedule of TDRs by interest accrual status	​ The following table presents TDRs by interest accrual status at the dates indicated (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2022 ​ March 31, 2021 ​ Accrual Nonaccrual Total Accrual Nonaccrual Total ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial business ​ $ — ​ $ 100 ​ $ 100 ​ $ — ​ $ 120 ​ $ 120 Commercial real estate ​ — ​ ​ 122 ​ ​ 122 ​ 1,324 ​ ​ 144 ​ ​ 1,468 Land ​ — ​ ​ — ​ ​ — ​ 710 ​ ​ — ​ ​ 710 Multi-family ​ — ​ ​ — ​ ​ — ​ 753 ​ ​ — ​ ​ 753 Consumer ​ 495 ​ ​ — ​ ​ 495 ​ 530 ​ ​ — ​ ​ 530 Total ​ $ 495 ​ $ 222 ​ $ 717 ​ $ 3,317 ​ $ 264 ​ $ 3,581

PREMISES AND EQUIPMENT (Tables)

PREMISES AND EQUIPMENT (Tables)	12 Months Ended
	Mar. 31, 2022
PREMISES AND EQUIPMENT
Schedule of premises and equipment	Premises and equipment consisted of the following at the dates indicated (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, ​ ​ 2022 ​ 2021 ​ ​ ​ ​ ​ ​ ​ Land $ 4,714 $ 5,247 Buildings and improvements ​ 17,030 ​ 18,097 Leasehold improvements ​ 3,998 ​ 3,123 Furniture and equipment ​ 10,765 ​ 10,734 Construction in progress ​ — ​ 32 Total ​ 36,507 ​ 37,233 Less accumulated depreciation and amortization ​ (19,341) ​ (19,409) Premises and equipment, net ​ $ 17,166 ​ $ 17,824 ​

DEPOSITS (Tables)

DEPOSITS (Tables)	12 Months Ended
	Mar. 31, 2022
DEPOSITS
Schedule of deposit accounts	Deposit accounts consisted of the following at the dates indicated (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, March 31, Account Type ​ 2022 ​ 2021 Non-interest-bearing ​ $ 494,831 ​ $ 435,098 Interest-bearing checking ​ 287,861 ​ 258,014 Money market ​ 299,738 ​ 240,554 Savings accounts ​ 340,076 ​ 291,769 Certificates of deposit ​ 111,372 ​ 120,625 Total ​ $ 1,533,878 ​ $ 1,346,060 ​
Schedule of maturities of certificates of deposit for future years	Scheduled maturities of certificates of deposit for future years ending March 31 are as follows (in thousands): ​ ​ ​ ​ ​ Year Ending March 31, : ​ 2023 ​ $ 77,179 2024 ​ 19,519 2025 ​ 9,951 2026 ​ 767 2027 ​ 2,913 Thereafter ​ 1,043 Total ​ $ 111,372 ​
Schedule of interest expense by deposit type	Interest expense by deposit type was as follows for the years indicated (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year Ended March 31, ​ 2022 2021 2020 Interest-bearing checking ​ $ 87 ​ $ 85 ​ $ 100 Money market ​ 150 ​ 153 ​ 229 Savings accounts ​ 247 ​ 418 ​ 1,054 Certificates of deposit ​ 940 ​ 1,888 ​ 1,507 Total ​ $ 1,424 ​ $ 2,544 ​ $ 2,890

JUNIOR SUBORDINATED DEBENTURES

JUNIOR SUBORDINATED DEBENTURES (Tables)	12 Months Ended
	Mar. 31, 2022
JUNIOR SUBORDINATED DEBENTURES
Schedule of summary of the terms and amounts outstanding of the debentures	The following table is a summary of the terms and the amounts outstanding of the Debentures at March 31, 2022 (dollars in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Issuance Trust Issuance Date Amount Outstanding Rate Type Initial Rate Current Rate Maturity Date ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Riverview Bancorp Statutory Trust I 12/2005 ​ $ 7,217 Variable (1) 5.88 % 2.19 % 3/2036 Riverview Bancorp Statutory Trust II 06/2007 ​ 15,464 Variable (2) 7.03 % 2.18 % 9/2037 Merchants Bancorp Statutory Trust I (4) 06/2003 ​ 5,155 Variable (3) 4.16 % 4.07 % 6/2033 ​ ​ ​ ​ 27,836 ​ ​ ​ ​ ​ ​ ​ ​ Fair value adjustment (4) ​ ​ ​ (1,003) Total Debentures ​ ​ ​ $ 26,833 ​ (1) The trust preferred securities reprice quarterly based on the three-month LIBOR plus 1.36% . (2) The trust preferred securities reprice quarterly based on the three-month LIBOR plus 1.35% . (3) The trust preferred securities reprice quarterly based on the three-month LIBOR plus 3.10 % . (4) Amount, net of accretion, attributable to a prior year’s business combination.

INCOME TAXES (Tables)

INCOME TAXES (Tables)	12 Months Ended
	Mar. 31, 2022
INCOME TAXES
Schedule of provision for income taxes	Provision for income taxes consisted of the following for the periods indicated (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year Ended March 31 ​ 2022 2021 2020 Current ​ $ 5,446 ​ $ 4,410 ​ $ 5,404 Deferred ​ 1,010 ​ (1,429) ​ (574) Total ​ $ 6,456 ​ $ 2,981 ​ $ 4,830 ​
Schedule of deferred tax assets and deferred tax liabilities	The tax effects of temporary differences that give rise to significant portions of deferred tax assets and deferred tax liabilities are as follows at the dates indicated (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, March 31, ​ 2022 2021 Deferred tax assets: ​ ​ ​ ​ ​ ​ Deferred compensation ​ $ 57 ​ $ 75 Allowance for loan losses ​ 3,588 ​ 4,725 Accrued expenses ​ 170 ​ 212 Accumulated depreciation and amortization ​ 881 ​ 862 Deferred gain on sale ​ 52 ​ 90 Deferred income ​ ​ 107 ​ ​ — Purchase accounting ​ 74 ​ 101 Net unrealized loss on investment securities available for sale ​ 3,141 ​ 50 Operating lease liabilities ​ ​ 1,993 ​ ​ 2,204 Other ​ 420 ​ 412 Total deferred tax assets ​ 10,483 ​ 8,731 Deferred tax liabilities: ​ ​ FHLB stock dividend ​ (38) ​ (38) Prepaid expenses ​ (171) ​ (214) Operating lease ROU assets ​ ​ (1,898) ​ ​ (2,108) Loan fees/costs ​ (875) ​ (952) Total deferred tax liabilities ​ (2,982) ​ (3,312) Deferred tax assets, net ​ $ 7,501 ​ $ 5,419
Schedule of reconciliation of effective income tax rate with the federal statutory tax rate	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year Ended March 31, ​ ​ 2022 2021 2022 ​ Statutory federal income tax rate 21.0 % 21.0 % 21.0 % State and local income tax rate 3.0 3.0 3.0 ​ ESOP market value adjustment (0.1) (0.1) (0.1) ​ BOLI (0.7) (1.5) (1.0) ​ Other, net (0.4) (0.3) 0.6 ​ Effective federal income tax rate 22.8 % 22.1 % 23.5 %

EMPLOYEE BENEFIT PLANS (Tables)

EMPLOYEE BENEFIT PLANS (Tables)	12 Months Ended
	Mar. 31, 2022
EMPLOYEE BENEFIT PLANS
Schedule of activity related to options under all plans	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year Ended March 31, ​ 2022 ​ 2021 ​ 2020 ​ ​ Weighted ​ Weighted ​ Weighted ​ ​ ​ ​ Average ​ ​ ​ Average ​ ​ ​ Average ​ ​ Number of ​ Exercise ​ Number of ​ Exercise ​ Number of ​ Exercise ​ Shares Price Shares Price Shares Price Balance, beginning of period 23,332 ​ $ 2.78 43,332 ​ $ 2.69 101,332 ​ $ 3.26 Options exercised (6,000) ​ 2.78 (20,000) ​ 2.58 (58,000) ​ 3.69 Balance, end of period 17,332 ​ $ 2.78 23,332 ​ $ 2.78 43,332 ​ $ 2.69
Schedule of additional information regarding stock options outstanding	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Options Outstanding ​ Options Exercisable ​ Weighted Avg ​ Weighted ​ Weighted ​ ​ Remaining ​ ​ ​ Average ​ ​ ​ Average Range of ​ Contractual ​ ​ ​ Exercise ​ ​ ​ Exercise Exercise Price ​ Life (years) ​ Number ​ Price ​ Number ​ Price ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ $1.00 - $3.00 1.29 17,332 ​ $ 2.78 17,332 ​ $ 2.78
Schedule of information of stock options outstanding	The following table presents information on stock options outstanding, less estimated forfeitures, as of March 31, 2022 and 2021: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2022 ​ March 31, 2021 Stock options fully vested and expected to vest: ​ ​ ​ Number ​ ​ 17,332 ​ 23,332 Weighted average exercise price ​ $ 2.78 ​ $ 2.78 Aggregate intrinsic value (1) ​ $ 83,000 ​ $ 97,000 Weighted average contractual term of options (years) ​ 1.29 ​ 2.29 Stock options fully vested and currently exercisable: ​ ​ ​ ​ Number ​ 17,332 ​ 23,332 Weighted average exercise price ​ $ 2.78 ​ $ 2.78 Aggregate intrinsic value (1) ​ $ 83,000 ​ $ 97,000 Weighted average contractual term of options (years) ​ 1.29 ​ 2.29 ​ (1) The aggregate intrinsic value of a stock option in the table above represents the total pre-tax intrinsic value (the amount by which the current market value of the underlying stock exceeds the exercise price) that would have been received by the option holders had all option holders exercised. This amount changes based on changes in the market value of the Company’s stock.
Schedule of unvested restricted stock activity	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Time Based Performance Based Total ​ ​ Number ​ Weighted ​ Number ​ Weighted ​ Number ​ Weighted ​ ​ of ​ Average ​ of ​ Average ​ of ​ Average ​ ​ Unvested ​ Grant Date ​ Unvested ​ Grant Date ​ Unvested ​ Grant Date ​ Shares Fair Value Shares Fair Value Shares Fair Value Balance, beginning of period 45,616 ​ $ 6.57 96,772 ​ $ 5.27 142,388 ​ $ 5.69 Granted 15,274 ​ 7.08 54,011 ​ 7.06 69,285 ​ 7.06 Forfeited (4,417) ​ 5.82 (16,559) ​ 5.55 (20,976) ​ 5.61 Vested (29,618) ​ 7.43 (12,732) ​ 8.35 (42,350) ​ 7.71 Balance, end of period 26,855 ​ $ 6.02 121,492 ​ $ 5.70 148,347 ​ $ 5.76

SHAREHOLDERS' EQUITY AND REGU_2

SHAREHOLDERS' EQUITY AND REGULATORY CAPITAL REQUIREMENTS (Tables)	12 Months Ended
	Mar. 31, 2022
Shareholders Equity And Regulatory Capital Requirements [Abstract]
Schedule of actual and required minimum capital amounts and ratios	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ "Well Capitalized" ​ ​ ​ ​ ​ ​ ​ ​ For Capital ​ Under Prompt ​ ​ ​ Actual Adequacy Purposes Corrective Action March 31, 2022 Amount Ratio Amount Ratio Amount Ratio ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Total Capital: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ (To Risk-Weighted Assets) ​ $ 168,486 ​ 16.38 % $ 82,305 ​ 8.0 % $ 102,881 ​ 10.0 % Tier 1 Capital: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ (To Risk-Weighted Assets) ​ ​ 155,601 ​ 15.12 ​ 61,728 ​ 6.0 ​ 82,305 ​ 8.0 ​ Common equity tier 1 Capital: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ (To Risk-Weighted Assets) ​ ​ 155,601 ​ 15.12 ​ 46,296 ​ 4.5 ​ 66,872 ​ 6.5 ​ Tier 1 Capital (Leverage): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ (To Average Tangible Assets) ​ ​ 155,601 ​ 9.19 ​ 67,763 ​ 4.0 ​ 84,704 ​ 5.0 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ "Well Capitalized" ​ ​ ​ ​ ​ ​ ​ ​ For Capital ​ Under Prompt ​ ​ ​ Actual Adequacy Purposes Corrective Action March 31, 2021 Amount Ratio Amount Ratio Amount Ratio ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Total Capital: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ (To Risk-Weighted Assets) ​ $ 151,555 17.35 % $ 69,879 8.0 % $ 87,349 10.0 % Tier 1 Capital: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ (To Risk-Weighted Assets) ​ ​ 140,529 16.09 ​ 52,409 6.0 ​ 69,879 8.0 ​ Common equity tier 1 Capital: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ (To Risk-Weighted Assets) ​ ​ 140,529 16.09 ​ 39,307 4.5 ​ 56,777 6.5 ​ Tier 1 Capital (Leverage): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ (To Average Tangible Assets) ​ ​ 140,529 9.63 ​ 58,344 4.0 ​ 72,930 5.0 ​

EARNINGS PER SHARE (Tables)

EARNINGS PER SHARE (Tables)	12 Months Ended
	Mar. 31, 2022
EARNINGS PER SHARE
Schedule of basic and diluted earnings per share	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year Ended March 31, (Dollars and share data in thousands, except per share data) 2022 2021 2020 Basic EPS computation: ​ ​ ​ Numerator-net income ​ $ 21,820 ​ $ 10,472 ​ $ 15,748 Denominator-weighted average common shares outstanding ​ 22,213 ​ 22,296 ​ 22,708 Basic EPS ​ $ 0.98 ​ $ 0.47 ​ $ 0.69 Diluted EPS computation: ​ ​ ​ Numerator-net income ​ $ 21,820 ​ $ 10,472 ​ $ 15,748 Denominator-weighted average common shares outstanding ​ 22,213 ​ 22,296 ​ 22,708 Effect of dilutive stock options ​ 12 ​ 17 ​ 36 Weighted average common shares and common stock equivalents ​ 22,225 ​ 22,313 ​ 22,744 Diluted EPS ​ $ 0.98 ​ $ 0.47 ​ $ 0.69

FAIR VALUE MEASUREMENTS (Tables

FAIR VALUE MEASUREMENTS (Tables)	12 Months Ended
	Mar. 31, 2022
FAIR VALUE MEASUREMENTS
Schedule of assets that are measured at estimated fair value on a recurring basis	The following tables present assets that are measured at estimated fair value on a recurring basis at the dates indicated (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Total Estimated ​ Estimated Fair Value Measurements Using March 31, 2022 Fair Value Level 1 Level 2 Level 3 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Investment securities available for sale: ​ ​ ​ ​ Municipal securities ​ $ 39,604 ​ $ — ​ $ 39,604 ​ $ — Agency securities ​ 40,705 ​ — ​ 40,705 ​ — Real estate mortgage investment conduits ​ 32,717 ​ — ​ 32,717 ​ — Residential mortgage-backed securities ​ 16,945 ​ — ​ 16,945 ​ — Other mortgage-backed securities ​ 35,811 ​ — ​ 35,811 ​ — Total assets measured at fair value on a recurring basis ​ $ 165,782 ​ $ — ​ $ 165,782 ​ $ — ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Total Estimated Estimated Fair Value Measurements Using March 31, 2021 Fair Value Level 1 Level 2 Level 3 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Investment securities available for sale: ​ ​ ​ ​ Municipal securities ​ $ 23,566 ​ $ — ​ $ 23,566 ​ $ — Agency securities ​ 25,315 ​ — ​ 25,315 ​ — Real estate mortgage investment conduits ​ 55,815 ​ — ​ 55,815 ​ — Residential mortgage-backed securities ​ 72,248 ​ — ​ 72,248 ​ — Other mortgage-backed securities ​ 39,360 ​ — ​ 39,360 ​ — Total assets measured at fair value on a recurring basis ​ $ 216,304 ​ $ — ​ $ 216,304 ​ $ —
Schedule of assets that are measured at estimated fair value on a nonrecurring basis	The following tables present assets that are measured at estimated fair value on a nonrecurring basis at the dates indicated (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Total ​ Estimated Fair Value ​ ​ Estimated ​ Measurements Using March 31, 2022 Fair Value Level 1 Level 2 Level 3 ​ ​ ​ ​ ​ ​ ​ ​ ​ Impaired loans ​ $ 228 ​ $ — ​ $ — ​ $ 228 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Impaired loans ​ $ 241 ​ $ — ​ $ — ​ $ 241
Schedule of quantitative information about Level 3 inputs for financial instruments measured at fair value on a nonrecurring basis	The following table presents quantitative information about Level 3 inputs for financial instruments measured at fair value on a nonrecurring basis at March 31, 2022 and 2021: ​ ​ ​ ​ ​ ​ ​ ​ ​ Valuation Significant Unobservable ​ ​ ​ Technique ​ Inputs ​ Range ​ ​ ​ ​ ​ ​ ​ Impaired loans Appraised Adjustment for market conditions N/A (1) ​ ​ Discounted cash flows ​ Discount rate ​ 5.375 % - 8.000% ​ (1) There were no adjustments to appraised values of impaired loans as of March 31, 2022 and 2021.
Schedule of carrying amount and estimated fair value of financial instruments	The carrying amounts and estimated fair values of financial instruments are as follows at the dates indicated (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Carrying ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Estimated March 31, 2022 ​ Amount Level 1 ​ Level 2 ​ Level 3 Fair Value ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Assets: ​ ​ ​ ​ ​ Cash and cash equivalents ​ $ 241,424 ​ $ 241,424 ​ $ — ​ $ — ​ $ 241,424 Certificates of deposit held for investment ​ 249 ​ — ​ 253 ​ — ​ 253 Investment securities available for sale ​ 165,782 ​ — ​ 165,782 ​ — ​ 165,782 Investment securities held to maturity ​ 253,100 ​ — ​ 236,029 ​ — ​ 236,029 Loans receivable, net ​ 975,885 ​ — ​ — ​ 962,893 ​ 962,893 FHLB stock ​ 2,019 ​ — ​ 2,019 ​ — ​ 2,019 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Liabilities: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Certificates of deposit ​ 111,372 ​ — ​ 109,860 ​ — ​ 109,860 Junior subordinated debentures ​ 26,833 ​ — ​ — ​ 16,046 ​ 16,046 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Carrying ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Estimated March 31, 2021 ​ Amount ​ Level 1 ​ Level 2 ​ Level 3 ​ Fair Value ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Assets: ​ ​ ​ ​ ​ Cash and cash equivalents ​ $ 265,408 ​ $ 265,408 ​ $ — ​ $ — ​ $ 265,408 Certificates of deposit held for investment ​ 249 ​ — ​ 262 ​ — ​ 262 Investment securities available for sale ​ 216,304 ​ — ​ 216,304 ​ — ​ 216,304 Investment securities held to maturity ​ 39,574 ​ — ​ 38,220 ​ — ​ 38,220 Loans receivable, net ​ 924,057 ​ — ​ — ​ 920,102 ​ 920,102 FHLB stock ​ 1,722 ​ — ​ 1,722 ​ — ​ 1,722 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Liabilities: ​ ​ ​ ​ ​ Certificates of deposit ​ 120,625 ​ — ​ 121,610 ​ — ​ 121,610 Junior subordinated debentures ​ 26,748 ​ — ​ — ​ 14,434 ​ 14,434 ​ ​

REVENUE FROM CONTRACTS WITH C_2

REVENUE FROM CONTRACTS WITH CUSTOMERS (Tables)	12 Months Ended
	Mar. 31, 2022
REVENUE FROM CONTRACTS WITH CUSTOMERS
Schedule of non-interest income disaggregated by type of service	The following table includes the Company’s non-interest income disaggregated by type of service (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year Ended March 31, ​ 2022 2021 2020 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Asset management fees ​ $ 4,107 ​ $ 3,646 ​ $ 4,408 Debit card and ATM fees ​ 3,499 ​ 3,103 ​ 3,102 Deposit related fees ​ 1,634 ​ 1,514 ​ 2,212 Loan related fees ​ 1,247 ​ 1,229 ​ 605 BOLI (1) ​ 800 ​ 813 ​ 864 Net gains on sales of loans held for sale (1) ​ — ​ 28 ​ 252 FHLMC loan servicing fees (1) ​ 85 ​ 94 ​ 147 BOLI death benefit in excess of cash surrender value (1) ​ ​ 500 ​ ​ — ​ ​ — Other, net ​ 872 ​ 663 ​ 770 Total non-interest income, net ​ $ 12,744 ​ $ 11,090 ​ $ 12,360 ​ (1) Not within the scope of ASC 606

COMMITMENTS AND CONTINGENCIES (

COMMITMENTS AND CONTINGENCIES (Tables)	12 Months Ended
	Mar. 31, 2022
COMMITMENTS AND CONTINGENCIES
Schedule of significant off-balance sheet commitments	Significant off-balance sheet commitments are listed below at the dates indicated (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Contract or Notional ​ ​ Amount ​ ​ March 31, ​ March 31, ​ 2022 2021 Commitments to extend credit: ​ ​ Adjustable-rate ​ $ 17,125 ​ $ 6,156 Fixed-rate ​ 2,895 ​ 6,522 Standby letters of credit ​ 1,780 ​ 1,999 Undisbursed loan funds and unused lines of credit ​ 137,460 ​ 134,781 Total ​ $ 159,260 ​ $ 149,458

LEASES (Tables)

LEASES (Tables)	12 Months Ended
	Mar. 31, 2022
LEASES
Schedule of lease right-of-use assets and lease liabilities	The table below presents the ROU assets and lease liabilities recorded in the consolidated balance sheet at the dates indicated (dollars in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, ​ March 31, Classification in the Leases 2022 2021 consolidated balance sheets Finance lease ROU assets ​ $ 1,355 $ 1,432 Financing lease ROU assets Finance lease liability ​ $ 2,283 $ 2,329 Finance lease liability Finance lease remaining lease term ​ 17.68 years 18.68 years ​ Finance lease discount rate ​ 7.16 % 7.16 % ​ ​ ​ ​ ​ ​ ​ ​ ​ Operating lease ROU assets ​ $ 7,907 $ 8,782 Prepaid expenses and other assets Operating lease liabilities ​ $ 8,306 $ 9,201 Accrued expenses and other liabilities Operating lease weighted-average remaining lease term ​ 7.02 years 7.87 years ​ Operating lease weighted-average discount rate ​ 1.81 % 1.77 %
Schedule of lease costs for finance and operating leases	The table below presents certain information related to the lease costs for operating leases, which are recorded in occupancy and depreciation in the accompanying consolidated statements of income at the dates indicated (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year ended ​ Year ended ​ Year ended Lease Costs March 31, 2022 March 31, 2021 ​ March 31, 2020 Finance lease amortization of ROU asset ​ $ 77 ​ $ 77 ​ $ 77 Finance lease interest on lease liability ​ 165 ​ 168 ​ ​ 171 Operating lease costs ​ 1,266 ​ 1,312 ​ ​ 1,508 Variable lease costs ​ 209 ​ 209 ​ ​ 209 Total lease cost (1) ​ $ 1,717 ​ $ 1,766 ​ $ 1,965 ​ (1) Income related to sub-lease activity is not significant and not presented herein .
Schedule of reconciliation of the undiscounted cash flows related to the Company's lease liabilities	​ The following table reconciles the undiscounted cash flows for the periods presented related to the Company’s lease liabilities as of March 31, 2022 (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ Year Ending March 31: Operating Finance ​ ​ Leases ​ Lease 2023 ​ $ 1,352 ​ $ 215 2024 ​ 1,370 ​ 219 2025 ​ 1,375 ​ 222 2026 ​ 1,125 ​ 226 2027 ​ 1,116 ​ 230 Thereafter ​ 2,531 ​ 2,944 Total minimum lease payments ​ 8,869 ​ 4,056 Less: amount of lease payment representing interest ​ (563) ​ (1,773) Lease liabilities ​ $ 8,306 ​ $ 2,283

RIVERVIEW BANCORP, INC. (PARE_2

RIVERVIEW BANCORP, INC. (PARENT COMPANY ONLY) (Tables)	12 Months Ended
	Mar. 31, 2022
RIVERVIEW BANCORP, INC. (PARENT COMPANY ONLY)
Schedule of condensed balance sheet	BALANCE SHEETS AS OF MARCH 31, 2022 AND 2021 ​ ​ ​ ​ ​ ​ ​ ​ (In thousands) 2022 2021 ASSETS ​ ​ Cash and cash equivalents ​ $ 10,867 ​ $ 10,006 Investment in the Bank ​ 173,223 ​ 168,064 Other assets ​ 1,321 ​ 1,454 TOTAL ASSETS ​ $ 185,411 ​ $ 179,524 LIABILITIES AND SHAREHOLDERS’ EQUITY ​ ​ Accrued expenses and other liabilities ​ $ 112 ​ $ 64 Dividend payable ​ 1,217 ​ 1,118 Borrowings ​ 26,833 ​ 26,748 Shareholders' equity ​ 157,249 ​ 151,594 TOTAL LIABILITIES AND SHAREHOLDERS’ EQUITY ​ $ 185,411 ​ $ 179,524
Schedule of condensed income statement	STATEMENTS OF INCOME FOR THE YEARS ENDED MARCH 31, 2022, 2021 AND 2020 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ (In thousands) 2022 2021 2020 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ INCOME: ​ ​ ​ Interest on investment securities and other short-term investments ​ $ 16 ​ $ 17 ​ $ 33 Total income ​ 16 ​ 17 ​ 33 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ EXPENSE: ​ ​ ​ ​ ​ ​ Management service fees paid to the Bank ​ 143 ​ 143 ​ 143 Other expenses ​ 670 ​ 731 ​ 1,233 Total expense ​ 813 ​ 874 ​ 1,376 LOSS BEFORE INCOME TAXES AND EQUITY ​ ​ ​ ​ ​ ​ IN UNDISTRIBUTED INCOME OF THE BANK ​ (797) ​ (857) ​ (1,343) BENEFIT FOR INCOME TAXES ​ (167) ​ (180) ​ (282) LOSS OF PARENT COMPANY ​ (630) ​ (677) ​ (1,061) EQUITY IN UNDISTRIBUTED INCOME OF THE BANK ​ 22,450 ​ 11,149 ​ 16,809 NET INCOME ​ $ 21,820 ​ $ 10,472 ​ $ 15,748
Schedule of condensed cash flow statement	STATEMENTS OF CASH FLOWS FOR THE YEARS ENDED MARCH 31, 2022, 2021 AND 2020 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ (In thousands) 2022 2021 2020 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ CASH FLOWS FROM OPERATING ACTIVITIES: ​ ​ ​ Net income ​ $ 21,820 ​ $ 10,472 ​ $ 15,748 Adjustments to reconcile net income to net cash used in operating activities: ​ ​ ​ ​ ​ ​ Equity in undistributed income of the Bank ​ (22,450) ​ (11,149) ​ (16,809) Amortization ​ 85 ​ 86 ​ 87 Provision for deferred income taxes ​ 2 ​ — ​ — Stock-based compensation ​ ​ 319 ​ ​ 396 ​ ​ 346 Changes in assets and liabilities: ​ ​ ​ ​ ​ ​ Other assets ​ 131 ​ 224 ​ (278) Accrued expenses and other liabilities ​ 48 ​ (417) ​ 364 Net cash used in operating activities ​ (45) ​ (388) ​ (542) ​ ​ ​ ​ CASH FLOWS FROM INVESTING ACTIVITIES: ​ ​ ​ Dividend from the Bank ​ 7,500 ​ 6,000 ​ 11,500 Net cash provided by investing activities ​ 7,500 ​ 6,000 ​ 11,500 ​ ​ ​ ​ ​ ​ ​ CASH FLOWS FROM FINANCING ACTIVITIES: ​ ​ ​ ​ ​ ​ Dividends paid ​ (4,670) ​ (4,478) ​ (4,075) Proceeds from exercise of stock options ​ 16 ​ 50 ​ 227 Repurchase of common stock ​ ​ (1,940) ​ ​ (1,447) ​ ​ (1,019) Net cash used in financing activities ​ (6,594) ​ (5,875) ​ (4,867) NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS ​ 861 ​ (263) ​ 6,091 ​ ​ ​ ​ ​ ​ ​ CASH AND CASH EQUIVALENTS, BEGINNING OF YEAR ​ 10,006 ​ 10,269 ​ 4,178 ​ ​ ​ ​ ​ ​ ​ CASH AND CASH EQUIVALENTS, END OF YEAR ​ $ 10,867 ​ $ 10,006 ​ $ 10,269
Schedule of quarterly financial information	SELECTED QUARTERLY FINANCIAL DATA (UNAUDITED): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ (Dollars in thousands, except per share data) ​ Three Months Ended Fiscal 2022: March 31 December 31 September 30 June 30 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Interest and dividend income ​ $ 12,389 ​ $ 12,551 ​ $ 12,965 ​ $ 11,920 Interest expense ​ 483 ​ 492 ​ 589 ​ 636 Net interest income ​ 11,906 ​ 12,059 ​ 12,376 ​ 11,284 Recapture of loan losses ​ (650) ​ ​ (1,275) ​ ​ (1,100) ​ ​ (1,600) Non-interest income, net ​ 2,966 ​ 3,116 ​ 3,074 ​ 3,588 Non-interest expense ​ 10,115 ​ 9,279 ​ 8,187 ​ 9,137 Income before income taxes ​ 5,407 ​ 7,171 ​ 8,363 ​ 7,335 Provision for income taxes ​ 1,282 ​ 1,661 ​ 1,933 ​ 1,580 ​ ​ ​ ​ ​ Net income ​ $ 4,125 ​ $ 5,510 ​ $ 6,430 ​ $ 5,755 ​ ​ ​ ​ ​ Basic earnings per common share (1) ​ $ 0.19 ​ $ 0.25 ​ $ 0.29 ​ $ 0.26 ​ ​ ​ ​ ​ ​ ​ ​ ​ Diluted earnings per common share (1) ​ $ 0.19 ​ $ 0.25 ​ $ 0.29 ​ $ 0.26 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Fiscal 2021: ​ ​ ​ ​ Interest and dividend income ​ $ 11,865 ​ $ 12,292 ​ $ 11,949 ​ $ 12,238 Interest expense ​ 669 ​ 763 ​ 885 ​ 1,110 Net interest income ​ 11,196 ​ 11,529 ​ 11,064 ​ 11,128 Provision for loan losses ​ — ​ — ​ 1,800 ​ 4,500 Non-interest income, net ​ 2,836 ​ 2,812 ​ 2,819 ​ 2,623 Non-interest expense ​ 9,626 ​ 9,107 ​ 8,836 ​ 8,685 Income before income taxes ​ 4,406 ​ 5,234 ​ 3,247 ​ 566 Provision for income taxes ​ 992 ​ 1,199 ​ 704 ​ 86 ​ ​ ​ ​ ​ Net income ​ $ 3,414 ​ $ 4,035 ​ $ 2,543 ​ $ 480 ​ ​ ​ ​ ​ Basic earnings per common share (1) ​ $ 0.15 ​ $ 0.18 ​ $ 0.11 ​ $ 0.02 ​ ​ ​ ​ ​ ​ Diluted earnings per common share (1) ​ $ 0.15 ​ $ 0.18 ​ $ 0.11 ​ $ 0.02 ​ (1) Quarterly earnings per common share may vary from annual earnings per common share due to rounding .

SUMMARY OF SIGNIFICANT ACCOUN_3

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details)	12 Months Ended
	Mar. 31, 2022USD ($)itemsegment	Mar. 31, 2021USD ($)
Accounting Policies [Abstract]
Number of branches in rural and suburban communities | item	17
Number of operating segments | segment	2
PCI loans	$ 0	$ 0
Minimum percentage of monthly payments charged off for consumer installment loan	75.00%
REO	$ 0	$ 0
Mortgage loans secured by residential real estate	$ 0

SUMMARY OF SIGNIFICANT ACCOUN_4

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Additional Information (Details) - USD ($)	1 Months Ended		12 Months Ended
	Oct. 31, 2020	Dec. 31, 2019	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020	Nov. 30, 2019
Summary Of Significant Accounting Policies [Line Items]
Number of shares additional issued	500
Additional Shares exercised	500
Assets Held-in-trust			$ 1,300,000,000	$ 1,300,000,000
Operating lease right-of-use assets			7,907,000	8,782,000
Operating lease liabilities			8,306,000	9,201,000
Loans and Leases Receivable, Gross, Total			990,408,000	943,235,000
Loans Issued Under Coronavirus Aid, Relief, and Economic Security Act [Member]
Summary Of Significant Accounting Policies [Line Items]
Loans and Leases Receivable, Gross, Total			$ 0
Core Deposit Intangibles | Merchants Bancorp
Summary Of Significant Accounting Policies [Line Items]
Estimated amortized period of Core Deposit Intangibles			10 years
Core Deposit Intangibles, gross			$ 1,400,000	1,400,000
Accumulated amortization			868,000	744,000
Estimated amortization expense of Core Deposit Intangibles for fiscal years ended March 31, 2023			116,000
Estimated amortization expense of Core Deposit Intangibles for fiscal years ended March 31, 2024			108,000
Estimated amortization expense of Core Deposit Intangibles for fiscal years ended March 31, 2025			100,000
Estimated amortization expense of Core Deposit Intangibles for fiscal years ended March 31, 2026			93,000
Estimated amortization expense of Core Deposit Intangibles for fiscal years ended March 31, 2027			$ 78,000
Building and improvements | Maximum
Summary Of Significant Accounting Policies [Line Items]
Estimated useful life			45 years
Furniture and equipment | Minimum
Summary Of Significant Accounting Policies [Line Items]
Estimated useful life			3 years
Furniture and equipment | Maximum
Summary Of Significant Accounting Policies [Line Items]
Estimated useful life			20 years
Leasehold improvements | Minimum
Summary Of Significant Accounting Policies [Line Items]
Estimated useful life			15 years
Leasehold improvements | Maximum
Summary Of Significant Accounting Policies [Line Items]
Estimated useful life			25 years
Trust Company
Summary Of Significant Accounting Policies [Line Items]
Number of shares issued		1,500
Number of stock options exercised		1,500
Non controlling Interest			$ 212,000	154,000
Net income attributable to the noncontrolling interest			$ 19,000	$ 10,000	$ 5,000
Trust Company | Riverview Community Bank
Summary Of Significant Accounting Policies [Line Items]
Ownership percentage			97.30%			100.00%
Trust Company | Riverview Trust Company's President And Chief Executive Officer
Summary Of Significant Accounting Policies [Line Items]
Noncontrolling interest percentage			2.70%

RESTRICTED ASSETS (Details)

RESTRICTED ASSETS (Details) - USD ($)	Mar. 31, 2022	Mar. 31, 2021
Other Restricted Assets [Abstract]
Minimum reserve balance	$ 0	$ 0

INVESTMENT SECURITIES - Availab

INVESTMENT SECURITIES - Available for sale (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Mar. 31, 2021
INVESTMENT SECURITIES
Amortized Cost	$ 178,874	$ 216,514
Gross Unrealized Gains	57	2,301
Gross Unrealized Losses	(13,149)	(2,511)
Estimated Fair Value	165,782	216,304
Municipal securities
INVESTMENT SECURITIES
Amortized Cost	44,104	23,883
Gross Unrealized Gains	14	238
Gross Unrealized Losses	(4,514)	(555)
Estimated Fair Value	39,604	23,566
Agency securities
INVESTMENT SECURITIES
Amortized Cost	43,848	25,996
Gross Unrealized Gains	1	5
Gross Unrealized Losses	(3,144)	(686)
Estimated Fair Value	40,705	25,315
Real estate mortgage investment conduits
INVESTMENT SECURITIES
Amortized Cost	35,563	55,826
Gross Unrealized Gains	1	469
Gross Unrealized Losses	(2,847)	(480)
Estimated Fair Value	32,717	55,815
Residential mortgage-backed securities
INVESTMENT SECURITIES
Amortized Cost	17,368	71,787
Gross Unrealized Gains	13	1,075
Gross Unrealized Losses	(436)	(614)
Estimated Fair Value	16,945	72,248
Other mortgage-backed securities
INVESTMENT SECURITIES
Amortized Cost	37,991	39,022
Gross Unrealized Gains	28	514
Gross Unrealized Losses	(2,208)	(176)
Estimated Fair Value	$ 35,811	$ 39,360

INVESTMENT SECURITIES - Held to

INVESTMENT SECURITIES - Held to maturity (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Mar. 31, 2021
INVESTMENT SECURITIES
Amortized Cost	$ 253,100	$ 39,574
Gross Unrealized Losses	(17,071)	(1,354)
Estimated Fair Value	236,029	38,220
Municipal securities
INVESTMENT SECURITIES
Amortized Cost	10,368	10,391
Gross Unrealized Losses	(1,422)	(509)
Estimated Fair Value	8,946	9,882
Agency securities
INVESTMENT SECURITIES
Amortized Cost	45,277	7,688
Gross Unrealized Losses	(2,450)	(220)
Estimated Fair Value	42,827	7,468
Real estate mortgage investment conduits
INVESTMENT SECURITIES
Amortized Cost	39,394	9,207
Gross Unrealized Losses	(2,457)	(141)
Estimated Fair Value	36,937	9,066
Residential mortgage-backed securities
INVESTMENT SECURITIES
Amortized Cost	137,343	6,175
Gross Unrealized Losses	(8,883)	(119)
Estimated Fair Value	128,460	6,056
Other mortgage-backed securities
INVESTMENT SECURITIES
Amortized Cost	20,718	6,113
Gross Unrealized Losses	(1,859)	(365)
Estimated Fair Value	$ 18,859	$ 5,748

INVESTMENT SECURITIES - Contrac

INVESTMENT SECURITIES - Contractual maturities, Available for sale (Details) $ in Thousands	Mar. 31, 2022USD ($)
Available for Sale, Amortized Cost
Due in one year or less	$ 2,002
Due after one year through five years	14,073
Due after five years through ten years	63,995
Due after ten years	98,804
Total, Amortized Cost	178,874
Available for Sale, Estimated Fair Value
Due in one year or less	2,004
Due after one year through five years	13,339
Due after five years through ten years	59,735
Due after ten years	90,704
Total, Estimated Fair Value	$ 165,782

INVESTMENT SECURITIES - Contr_2

INVESTMENT SECURITIES - Contractual maturities, Held to maturity (Details) $ in Thousands	Mar. 31, 2022USD ($)
Held to Maturity, Amortized Cost
Due after one year through five years	$ 24,344
Due after five years through ten years	39,407
Due after ten years	189,349
Total, Amortized Cost	253,100
Held to Maturity, Estimated Fair Value
Due after one year through five years	23,559
Due after five years through ten years	36,305
Due after ten years	176,165
Total, Estimated Fair Value	$ 236,029

INVESTMENT SECURITIES - Fair va

INVESTMENT SECURITIES - Fair value of impaired investment securities (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Mar. 31, 2021
INVESTMENT SECURITIES
Less than 12 months, Estimated Fair Value	$ 120,499	$ 105,317
Less than 12 months, Unrealized Losses	(9,798)	(2,460)
12 months or longer, Estimated Fair Value	35,740	2,225
12 months or longer, Unrealized Losses	(3,351)	(51)
Total, Estimated Fair Value	156,239	107,542
Total, Unrealized Losses	(13,149)	(2,511)
Debt Securities, Held to maturity
Less than 12 months, Estimated fair value	192,642	38,199
Less than 12 months, unrealized losses	(12,552)	(1,354)
12 months or longer, Estimated Fair Value	40,417
12 months or longer, Unrealized Losses	(4,519)
Total Estimated fair value	233,059	38,199
Total, Unrealized Losses	(17,071)	(1,354)
Municipal securities
INVESTMENT SECURITIES
Less than 12 months, Estimated Fair Value	32,767	17,529
Less than 12 months, Unrealized Losses	(4,293)	(555)
12 months or longer, Estimated Fair Value	3,282
12 months or longer, Unrealized Losses	(221)
Total, Estimated Fair Value	36,049	17,529
Total, Unrealized Losses	(4,514)	(555)
Debt Securities, Held to maturity
Less than 12 months, Estimated fair value	5,911	9,882
Less than 12 months, unrealized losses	(816)	(509)
12 months or longer, Estimated Fair Value	3,036
12 months or longer, Unrealized Losses	(606)
Total Estimated fair value	8,947	9,882
Total, Unrealized Losses	(1,422)	(509)
Agency securities
INVESTMENT SECURITIES
Less than 12 months, Estimated Fair Value	22,288	23,306
Less than 12 months, Unrealized Losses	(1,565)	(686)
12 months or longer, Estimated Fair Value	16,414
12 months or longer, Unrealized Losses	(1,579)
Total, Estimated Fair Value	38,702	23,306
Total, Unrealized Losses	(3,144)	(686)
Debt Securities, Held to maturity
Less than 12 months, Estimated fair value	35,930	7,468
Less than 12 months, unrealized losses	(1,708)	(220)
12 months or longer, Estimated Fair Value	6,897
12 months or longer, Unrealized Losses	(742)
Total Estimated fair value	42,827	7,468
Total, Unrealized Losses	(2,450)	(220)
Real estate mortgage investment conduits
INVESTMENT SECURITIES
Less than 12 months, Estimated Fair Value	17,334	25,462
Less than 12 months, Unrealized Losses	(1,310)	(480)
12 months or longer, Estimated Fair Value	15,275
12 months or longer, Unrealized Losses	(1,537)
Total, Estimated Fair Value	32,609	25,462
Total, Unrealized Losses	(2,847)	(480)
Debt Securities, Held to maturity
Less than 12 months, Estimated fair value	26,233	9,066
Less than 12 months, unrealized losses	(1,715)	(141)
12 months or longer, Estimated Fair Value	7,735
12 months or longer, Unrealized Losses	(742)
Total Estimated fair value	33,968	9,066
Total, Unrealized Losses	(2,457)	(141)
Residential mortgage-backed securities
INVESTMENT SECURITIES
Less than 12 months, Estimated Fair Value	15,702	33,164
Less than 12 months, Unrealized Losses	(436)	(614)
Total, Estimated Fair Value	15,702	33,164
Total, Unrealized Losses	(436)	(614)
Debt Securities, Held to maturity
Less than 12 months, Estimated fair value	111,096	6,035
Less than 12 months, unrealized losses	(7,160)	(119)
12 months or longer, Estimated Fair Value	17,363
12 months or longer, Unrealized Losses	(1,723)
Total Estimated fair value	128,459	6,035
Total, Unrealized Losses	(8,883)	(119)
Other mortgage-backed securities
INVESTMENT SECURITIES
Less than 12 months, Estimated Fair Value	32,408	5,856
Less than 12 months, Unrealized Losses	(2,194)	(125)
12 months or longer, Estimated Fair Value	769	2,225
12 months or longer, Unrealized Losses	(14)	(51)
Total, Estimated Fair Value	33,177	8,081
Total, Unrealized Losses	(2,208)	(176)
Debt Securities, Held to maturity
Less than 12 months, Estimated fair value	13,472	5,748
Less than 12 months, unrealized losses	(1,153)	(365)
12 months or longer, Estimated Fair Value	5,386
12 months or longer, Unrealized Losses	(706)
Total Estimated fair value	18,858	5,748
Total, Unrealized Losses	$ (1,859)	$ (365)

INVESTMENT SECURITIES - Additio

INVESTMENT SECURITIES - Additional information (Details) - USD ($)	3 Months Ended	12 Months Ended
	Dec. 31, 2021	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
INVESTMENT SECURITIES
Available for sale securities transferred to held to maturity	$ 85,800,000
Unrealized after tax gain	18,000
Gains (losses) recognized at time of transfer	$ 0
Proceeds from the sale of investment securities		$ 0	$ 0	$ 17,800,000
Gross realized gains on sales of investment securities		0	0	$ 30,000
Investment securities available for sale
INVESTMENT SECURITIES
Pledged as collateral at amortized cost		1,300,000	5,300,000
Pledged as collateral at fair value		1,200,000	5,400,000
Investment securities held to maturity
INVESTMENT SECURITIES
Pledged as collateral at amortized cost		13,700,000	3,100,000
Pledged as collateral at fair value		$ 12,600,000	$ 3,000,000

LOANS RECEIVABLE - Loans receiv

LOANS RECEIVABLE - Loans receivable, excluding loans held for sale (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019
LOANS RECEIVABLE
Total loans	$ 990,408	$ 943,235
Less: Allowance for loan losses	14,523	19,178	$ 12,624	$ 11,457
Loans receivable, net	975,885	924,057
Commercial Business
LOANS RECEIVABLE
Total loans	228,091	265,145
Commercial Real Estate
LOANS RECEIVABLE
Total loans	582,837	543,467
Land
LOANS RECEIVABLE
Total loans	11,556	14,040
Multi-Family
LOANS RECEIVABLE
Total loans	60,211	45,014
Real Estate Construction
LOANS RECEIVABLE
Total loans	24,160	16,990
Commercial Real Estate Portfolio Segment
LOANS RECEIVABLE
Total loans	906,855	884,656
Commercial Real Estate Portfolio Segment | Commercial Business
LOANS RECEIVABLE
Total loans	228,091	265,145
Less: Allowance for loan losses	2,422	2,416	2,008	1,808
Commercial Real Estate Portfolio Segment | Commercial Real Estate
LOANS RECEIVABLE
Total loans	582,837	543,467
Less: Allowance for loan losses	9,037	14,089	6,421	5,053
Commercial Real Estate Portfolio Segment | Land
LOANS RECEIVABLE
Total loans	11,556	14,040
Less: Allowance for loan losses	168	233	230	254
Commercial Real Estate Portfolio Segment | Multi-Family
LOANS RECEIVABLE
Total loans	60,211	45,014
Less: Allowance for loan losses	845	638	854	728
Commercial Real Estate Portfolio Segment | Real Estate Construction
LOANS RECEIVABLE
Total loans	24,160	16,990
Less: Allowance for loan losses	393	294	1,149	1,457
Consumer
LOANS RECEIVABLE
Total loans	83,553	58,579
Less: Allowance for loan losses	943	852	$ 1,363	$ 1,447
Consumer | Real estate one-to-four family
LOANS RECEIVABLE
Total loans	82,006	56,405
Consumer | Other installment
LOANS RECEIVABLE
Total loans	1,547	2,174
PPP | Commercial Real Estate Portfolio Segment
LOANS RECEIVABLE
Total loans	$ 3,100	$ 93,400

LOANS RECEIVABLE - Aggregate lo

LOANS RECEIVABLE - Aggregate loans to officers and directors (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Loans to Officers and Directors
Beginning balance	$ 5,308	$ 625	$ 778
Originations	32	8,174	977
Principal repayments	(1,550)	(3,491)	(1,130)
Ending balance	$ 3,790	$ 5,308	$ 625

LOANS RECEIVABLE - Additional i

LOANS RECEIVABLE - Additional information (Details)	12 Months Ended
	Mar. 31, 2022USD ($)item	Mar. 31, 2021USD ($)item
LOANS RECEIVABLE
Net deferred loan fees	$ 4,500,000	$ 6,600,000
Number of Loans to Foreign Domiciled Businesses or Foreign Countries | item	0	0
Discount on Loans receivable	$ 371,000	$ 722,000
Premiums On Loans Receivable.	$ 2,400,000
Premiums On Loans Receivable		956,000
Percentage of loans and extensions of credit outstanding	15.00%
Loans pledged as collateral	$ 567,700,000
Total loans	990,408,000	943,235,000
Commercial Real Estate Portfolio Segment
LOANS RECEIVABLE
Total loans	906,855,000	884,656,000
Consumer
LOANS RECEIVABLE
Total loans	83,553,000	58,579,000
PPP
LOANS RECEIVABLE
Net deferred loan fees	99,000	2,700,000
PPP | Commercial Real Estate Portfolio Segment
LOANS RECEIVABLE
Total loans	$ 3,100,000	93,400,000
Raw Land Loans [Member] | Commercial Real Estate Portfolio Segment
LOANS RECEIVABLE
Maximum loan-to-value ratio	65.00%
Land and Land Improvements [Member] | Commercial Real Estate Portfolio Segment
LOANS RECEIVABLE
Maximum loan-to-value ratio	75.00%
Real estate one-to-four family | Consumer
LOANS RECEIVABLE
Total loans	$ 82,006,000	56,405,000
Maximum loan-to-value ratio	80.00%
Real estate one-to-four family | Consumer | Minimum
LOANS RECEIVABLE
Terms of maturity	15 years
Real estate one-to-four family | Consumer | Maximum
LOANS RECEIVABLE
Terms of maturity	30 years
Commercial Real Estate
LOANS RECEIVABLE
Total loans	$ 582,837,000	543,467,000
Commercial Real Estate | Commercial Real Estate Portfolio Segment
LOANS RECEIVABLE
Total loans	$ 582,837,000	$ 543,467,000
Commercial Real Estate | Commercial Real Estate Portfolio Segment | Minimum
LOANS RECEIVABLE
Maximum loan-to-value ratio	65.00%
Commercial Real Estate | Commercial Real Estate Portfolio Segment | Maximum
LOANS RECEIVABLE
Maximum loan-to-value ratio	80.00%

ALLOWANCE FOR LOAN LOSSES - Rec

ALLOWANCE FOR LOAN LOSSES - Reconciliation of the allowance for loan losses (Details) - USD ($) $ in Thousands	3 Months Ended						12 Months Ended
	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Reconciliation of the allowance for loan losses
Beginning balance				$ 19,178		$ 12,624	$ 19,178	$ 12,624	$ 11,457
Provision for (recapture of) loan losses	$ (650)	$ (1,275)	$ (1,100)	(1,600)	$ 1,800	4,500	(4,625)	6,300	1,250
Charge-offs							(86)	(124)	(146)
Recoveries							56	378	63
Ending balance	14,523						14,523	19,178	12,624
Commercial Real Estate Portfolio Segment | Commercial Business
Reconciliation of the allowance for loan losses
Beginning balance				2,416		2,008	2,416	2,008	1,808
Provision for (recapture of) loan losses							75	398	264
Charge-offs							(69)		(64)
Recoveries								10
Ending balance	2,422						2,422	2,416	2,008
Commercial Real Estate Portfolio Segment | Commercial Real Estate
Reconciliation of the allowance for loan losses
Beginning balance				14,089		6,421	14,089	6,421	5,053
Provision for (recapture of) loan losses							(5,052)	7,336	1,368
Recoveries								332
Ending balance	9,037						9,037	14,089	6,421
Commercial Real Estate Portfolio Segment | Land
Reconciliation of the allowance for loan losses
Beginning balance				233		230	233	230	254
Provision for (recapture of) loan losses							(65)	3	(24)
Ending balance	168						168	233	230
Commercial Real Estate Portfolio Segment | Multi-Family
Reconciliation of the allowance for loan losses
Beginning balance				638		854	638	854	728
Provision for (recapture of) loan losses							207	(216)	126
Ending balance	845						845	638	854
Commercial Real Estate Portfolio Segment | Real Estate Construction
Reconciliation of the allowance for loan losses
Beginning balance				294		1,149	294	1,149	1,457
Provision for (recapture of) loan losses							99	(855)	(308)
Ending balance	393						393	294	1,149
Consumer
Reconciliation of the allowance for loan losses
Beginning balance				852		1,363	852	1,363	1,447
Provision for (recapture of) loan losses							52	(423)	(65)
Charge-offs							(17)	(124)	(82)
Recoveries							56	36	63
Ending balance	943						943	852	1,363
Unallocated
Reconciliation of the allowance for loan losses
Beginning balance				$ 656		$ 599	656	599	710
Provision for (recapture of) loan losses							59	57	(111)
Ending balance	$ 715						$ 715	$ 656	$ 599

ALLOWANCE FOR LOAN LOSSES - Imp

ALLOWANCE FOR LOAN LOSSES - Impaired Financing Receivables (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Mar. 31, 2021
Allowance for loan losses
Individually Evaluated for Impairment	$ 8	$ 11
Collectively Evaluated for Impairment	14,515	19,167
Total	14,523	19,178
Recorded investment in loans
Individually Evaluated for Impairment	717	3,581
Collectively Evaluated for Impairment	989,691	939,654
Total	990,408	943,235
Commercial Real Estate Portfolio Segment | Commercial Business
Allowance for loan losses
Collectively Evaluated for Impairment	2,422	2,416
Total	2,422	2,416
Recorded investment in loans
Individually Evaluated for Impairment	100	120
Collectively Evaluated for Impairment	227,991	265,025
Total	228,091	265,145
Commercial Real Estate Portfolio Segment | Commercial Real Estate
Allowance for loan losses
Collectively Evaluated for Impairment	9,037	14,089
Total	9,037	14,089
Recorded investment in loans
Individually Evaluated for Impairment	122	1,468
Collectively Evaluated for Impairment	582,715	541,999
Total	582,837	543,467
Commercial Real Estate Portfolio Segment | Land
Allowance for loan losses
Collectively Evaluated for Impairment	168	233
Total	168	233
Recorded investment in loans
Individually Evaluated for Impairment		710
Collectively Evaluated for Impairment	11,556	13,330
Total	11,556	14,040
Commercial Real Estate Portfolio Segment | Multi-Family
Allowance for loan losses
Collectively Evaluated for Impairment	845	638
Total	845	638
Recorded investment in loans
Individually Evaluated for Impairment		753
Collectively Evaluated for Impairment	60,211	44,261
Total	60,211	45,014
Commercial Real Estate Portfolio Segment | Real Estate Construction
Allowance for loan losses
Collectively Evaluated for Impairment	393	294
Total	393	294
Recorded investment in loans
Collectively Evaluated for Impairment	24,160	16,990
Total	24,160	16,990
Consumer
Allowance for loan losses
Individually Evaluated for Impairment	8	11
Collectively Evaluated for Impairment	935	841
Total	943	852
Recorded investment in loans
Individually Evaluated for Impairment	495	530
Collectively Evaluated for Impairment	83,058	58,049
Total	83,553	58,579
Unallocated
Allowance for loan losses
Collectively Evaluated for Impairment	715	656
Total	$ 715	$ 656

ALLOWANCE FOR LOAN LOSSES - Unf

ALLOWANCE FOR LOAN LOSSES - Unfunded Loan Commitments (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Allowance for unfunded loan commitments
Beginning balance	$ 509	$ 474	$ 469
Net change in allowance for unfunded loan commitments	(85)	35	5
Ending Balance	$ 424	$ 509	$ 474

ALLOWANCE FOR LOAN LOSSES - Ana

ALLOWANCE FOR LOAN LOSSES - Analysis of loans by aging category (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Mar. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual	$ 291	$ 395
Total Past Due and Non-accrual	30,152	812
Current	960,256	942,423
Total Loans Receivable	990,408	943,235
30 To 89 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	8,053	241
90 Days and Greater Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	21,808	176
Commercial Business
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	228,091	265,145
Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	582,837	543,467
Land
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	11,556	14,040
Multi-Family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	60,211	45,014
Real Estate Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	24,160	16,990
Commercial Real Estate Portfolio Segment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	906,855	884,656
Commercial Real Estate Portfolio Segment | Commercial Business
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual	118	182
Total Past Due and Non-accrual	29,679	455
Current	198,412	264,690
Total Loans Receivable	228,091	265,145
Commercial Real Estate Portfolio Segment | Commercial Business | 30 To 89 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	7,753	98
Commercial Real Estate Portfolio Segment | Commercial Business | 90 Days and Greater Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	21,808	175
Commercial Real Estate Portfolio Segment | Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual	122	144
Total Past Due and Non-accrual	122	144
Current	582,715	543,323
Total Loans Receivable	582,837	543,467
Commercial Real Estate Portfolio Segment | Land
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	11,556	14,040
Total Loans Receivable	11,556	14,040
Commercial Real Estate Portfolio Segment | Multi-Family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	60,211	45,014
Total Loans Receivable	60,211	45,014
Commercial Real Estate Portfolio Segment | Real Estate Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due and Non-accrual	291
Current	23,869	16,990
Total Loans Receivable	24,160	16,990
Commercial Real Estate Portfolio Segment | Real Estate Construction | 30 To 89 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	291
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual	51	69
Total Past Due and Non-accrual	60	213
Current	83,493	58,366
Total Loans Receivable	83,553	58,579
Consumer | 30 To 89 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	$ 9	143
Consumer | 90 Days and Greater Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current		$ 1

ALLOWANCE FOR LOAN LOSSES - Cre

ALLOWANCE FOR LOAN LOSSES - Credit Quality Indicators (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Mar. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	$ 990,408	$ 943,235
Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	976,208	893,055
Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	7,795	42,493
Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	6,405	7,687
Commercial Business
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	228,091	265,145
Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	582,837	543,467
Land
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	11,556	14,040
Multi-Family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	60,211	45,014
Real Estate Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	24,160	16,990
Commercial Real Estate Portfolio Segment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	906,855	884,656
Commercial Real Estate Portfolio Segment | Commercial Business
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	228,091	265,145
Commercial Real Estate Portfolio Segment | Commercial Business | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	227,435	264,564
Commercial Real Estate Portfolio Segment | Commercial Business | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	511	399
Commercial Real Estate Portfolio Segment | Commercial Business | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	145	182
Commercial Real Estate Portfolio Segment | Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	582,837	543,467
Commercial Real Estate Portfolio Segment | Commercial Real Estate | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	569,417	494,010
Commercial Real Estate Portfolio Segment | Commercial Real Estate | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	7,211	42,045
Commercial Real Estate Portfolio Segment | Commercial Real Estate | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	6,209	7,412
Commercial Real Estate Portfolio Segment | Land
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	11,556	14,040
Commercial Real Estate Portfolio Segment | Land | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	11,556	14,040
Commercial Real Estate Portfolio Segment | Multi-Family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	60,211	45,014
Commercial Real Estate Portfolio Segment | Multi-Family | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	60,138	44,941
Commercial Real Estate Portfolio Segment | Multi-Family | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	73	49
Commercial Real Estate Portfolio Segment | Multi-Family | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable		24
Commercial Real Estate Portfolio Segment | Real Estate Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	24,160	16,990
Commercial Real Estate Portfolio Segment | Real Estate Construction | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	24,160	16,990
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	83,553	58,579
Consumer | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	83,502	58,510
Consumer | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	$ 51	$ 69

ALLOWANCE FOR LOAN LOSSES - Ave

ALLOWANCE FOR LOAN LOSSES - Average recorded investment in impaired loans (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Mar. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment with No Specific Valuation Allowance	$ 481	$ 3,329
Recorded Investment with Specific Valuation Allowance	236	252
Total Recorded Investment	717	3,581
Unpaid Principal Balance	924	3,952
Related Specific Valuation Allowance	8	11
Commercial Real Estate Portfolio Segment | Commercial Business
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment with No Specific Valuation Allowance	100	120
Total Recorded Investment	100	120
Unpaid Principal Balance	143	157
Commercial Real Estate Portfolio Segment | Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment with No Specific Valuation Allowance	122	1,468
Total Recorded Investment	122	1,468
Unpaid Principal Balance	178	1,556
Commercial Real Estate Portfolio Segment | Land
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment with No Specific Valuation Allowance		710
Total Recorded Investment		710
Unpaid Principal Balance		740
Commercial Real Estate Portfolio Segment | Multi-Family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment with No Specific Valuation Allowance		753
Total Recorded Investment		753
Unpaid Principal Balance		856
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment with No Specific Valuation Allowance	259	278
Recorded Investment with Specific Valuation Allowance	236	252
Total Recorded Investment	495	530
Unpaid Principal Balance	603	643
Related Specific Valuation Allowance	$ 8	$ 11

ALLOWANCE FOR LOAN LOSSES - I_2

ALLOWANCE FOR LOAN LOSSES - Impaired Loans, Average Recorded Investment and Interest Recognized (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Recorded Investment	$ 1,284	$ 4,658	$ 5,357
Interest Recognized on Impaired Loans	40	207	221
Commercial Real Estate Portfolio Segment | Commercial Business
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Recorded Investment	110	130	150
Interest Recognized on Impaired Loans			62
Commercial Real Estate Portfolio Segment | Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Recorded Investment	660	2,008	2,420
Interest Recognized on Impaired Loans	16	61	40
Commercial Real Estate Portfolio Segment | Land
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Recorded Investment		713	720
Interest Recognized on Impaired Loans		40	90
Commercial Real Estate Portfolio Segment | Multi-Family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Recorded Investment		1,313	1,573
Interest Recognized on Impaired Loans		77
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Recorded Investment	514	494	494
Interest Recognized on Impaired Loans	$ 24	$ 29	$ 29

ALLOWANCE FOR LOAN LOSSES - TDR

ALLOWANCE FOR LOAN LOSSES - TDRs by Interest Accrual Status (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Mar. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accrual	$ 495	$ 3,317
Nonaccrual	222	264
Total	717	3,581
Commercial Real Estate Portfolio Segment | Commercial Business
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual	100	120
Total	100	120
Commercial Real Estate Portfolio Segment | Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accrual		1,324
Nonaccrual	122	144
Total	122	1,468
Commercial Real Estate Portfolio Segment | Land
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accrual		710
Total		710
Commercial Real Estate Portfolio Segment | Multi-Family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accrual		753
Total		753
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accrual	495	530
Total	$ 495	$ 530

ALLOWANCE FOR LOAN LOSSES - Add

ALLOWANCE FOR LOAN LOSSES - Additional information (Details)	12 Months Ended
	Mar. 31, 2022USD ($)item	Mar. 31, 2021USD ($)item	Mar. 31, 2020USD ($)
ALLOWANCE FOR LOAN LOSSES
Interest income foregone on non-accrual loans	$ 24,000	$ 49,000	$ 75,000
Post-modification outstanding recorded investment amount		$ 129,000
Number of TDR loans default | item	0	1

PREMISES AND EQUIPMENT (Details

PREMISES AND EQUIPMENT (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Mar. 31, 2021
PREMISES AND EQUIPMENT
Total	$ 36,507	$ 37,233
Less accumulated depreciation and amortization	(19,341)	(19,409)
Premises and equipment, net	17,166	17,824
Land
PREMISES AND EQUIPMENT
Total	4,714	5,247
Buildings and improvements
PREMISES AND EQUIPMENT
Total	17,030	18,097
Leasehold improvements
PREMISES AND EQUIPMENT
Total	3,998	3,123
Furniture and equipment
PREMISES AND EQUIPMENT
Total	$ 10,765	10,734
Construction in progress
PREMISES AND EQUIPMENT
Total		$ 32

PREMISES AND EQUIPMENT - Additi

PREMISES AND EQUIPMENT - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
PREMISES AND EQUIPMENT
Depreciation and amortization expense	$ 1.5	$ 1.4	$ 1.3

GOODWILL (Details)

GOODWILL (Details)	Oct. 31, 2021USD ($)	Mar. 31, 2022item
GOODWILL
Number of Reporting Units | item		2
Goodwill impairment | $	$ 0

DEPOSITS - Summary of Deposit A

DEPOSITS - Summary of Deposit Accounts (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Mar. 31, 2021
DEPOSITS
Non-interest-bearing	$ 494,831	$ 435,098
Interest-bearing checking	287,861	258,014
Money market	299,738	240,554
Savings accounts	340,076	291,769
Certificates of deposit	111,372	120,625
Total	$ 1,533,878	$ 1,346,060

DEPOSITS - Maturities of certif

DEPOSITS - Maturities of certificates of deposit for future years (Details) $ in Thousands	Mar. 31, 2022USD ($)
DEPOSITS
2023	$ 77,179
2024	19,519
2025	9,951
2026	767
2027	2,913
Thereafter	1,043
Total	$ 111,372

DEPOSITS - Interest Expense by

DEPOSITS - Interest Expense by Deposit Type (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
DEPOSITS
Interest-bearing checking	$ 87	$ 85	$ 100
Money market	150	153	229
Savings accounts	247	418	1,054
Certificates of deposit	940	1,888	1,507
Total	$ 1,424	$ 2,544	$ 2,890

DEPOSITS - Additional Informati

DEPOSITS - Additional Information (Details) - USD ($) $ in Millions	Mar. 31, 2022	Mar. 31, 2021
DEPOSITS
Time deposits more than 250,000	$ 32.7	$ 31.7

JUNIOR SUBORDINATED DEBENTURE_2

JUNIOR SUBORDINATED DEBENTURES (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
JUNIOR SUBORDINATED DEBENTURES
Amount Outstanding	$ 27,836
Fair value adjustment	(1,003)
Total Debentures	$ 26,833	$ 26,748
Riverview Bancorp Statutory Trust I
JUNIOR SUBORDINATED DEBENTURES
Issuance Date	Dec. 1, 2005
Amount Outstanding	$ 7,217
Rate Type	Variable
Initial Rate	5.88%
Current Rate	2.19%
Maturity Date	3/2036
Riverview Bancorp Statutory Trust II
JUNIOR SUBORDINATED DEBENTURES
Issuance Date	Jun. 1, 2007
Amount Outstanding	$ 15,464
Rate Type	Variable
Initial Rate	7.03%
Current Rate	2.18%
Maturity Date	9/2037
Merchants Bancorp Statutory Trust I
JUNIOR SUBORDINATED DEBENTURES
Issuance Date	Jun. 1, 2003
Amount Outstanding	$ 5,155
Rate Type	Variable
Initial Rate	4.16%
Current Rate	4.07%
Maturity Date	6/2033

JUNIOR SUBORDINATED DEBENTURE_3

JUNIOR SUBORDINATED DEBENTURES - Additional Information (Details)	12 Months Ended
	Mar. 31, 2022USD ($)item	Mar. 31, 2021USD ($)
JUNIOR SUBORDINATED DEBENTURES
Maximum number of consecutive quarters for deferred payment of each debenture | item	20
Debentures issued to grantor trusts	$ 26,800,000	$ 26,700,000
Common securities issued by grantor trusts	$ 836,000	$ 836,000
Riverview Bancorp Statutory Trust I
JUNIOR SUBORDINATED DEBENTURES
Description of variable rate	three-month LIBOR
Interest basis spread on variable rate	1.36%
Riverview Bancorp Statutory Trust II
JUNIOR SUBORDINATED DEBENTURES
Description of variable rate	three-month LIBOR
Interest basis spread on variable rate	1.35%
Merchants Bancorp Statutory Trust I
JUNIOR SUBORDINATED DEBENTURES
Description of variable rate	three-month LIBOR
Interest basis spread on variable rate	3.10%

INCOME TAXES - Components of In

INCOME TAXES - Components of Income Tax Expense (Benefit) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
INCOME TAXES
Current									$ 5,446	$ 4,410	$ 5,404
Deferred									1,010	(1,429)	(574)
Total	$ 1,282	$ 1,661	$ 1,933	$ 1,580	$ 992	$ 1,199	$ 704	$ 86	$ 6,456	$ 2,981	$ 4,830

INCOME TAXES - Deferred Tax Ass

INCOME TAXES - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Mar. 31, 2021
Deferred tax assets:
Deferred compensation	$ 57	$ 75
Allowance for loan losses	3,588	4,725
Accrued expenses	170	212
Accumulated depreciation and amortization	881	862
Deferred gain on sale	52	90
Deferred income	107
Purchase accounting	74	101
Net unrealized loss on investment securities available for sale	3,141	50
Operating lease liabilities	1,993	2,204
Other	420	412
Total deferred tax assets	10,483	8,731
Deferred tax liabilities:
FHLB stock dividend	(38)	(38)
Prepaid expenses	(171)	(214)
Operating lease ROU assets	(1,898)	(2,108)
Loan fees/costs	(875)	(952)
Total deferred tax liabilities	(2,982)	(3,312)
Deferred tax assets, net	$ 7,501	$ 5,419

INCOME TAXES - Effective Income

INCOME TAXES - Effective Income Tax Rate Reconciliation (Details)	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
INCOME TAXES
Statutory federal income tax rate	21.00%	21.00%	21.00%
State and local income tax rate	3.00%	3.00%	3.00%
ESOP market value adjustment	(0.10%)	(0.10%)	(0.10%)
BOLI	(0.70%)	(1.50%)	(1.00%)
Other, net	(0.40%)	(0.30%)	0.60%
Effective federal income tax rate	22.80%	22.10%	23.50%

INCOME TAXES - Additional Infor

INCOME TAXES - Additional Information (Details) - USD ($)	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
INCOME TAXES
Federal corporate income tax rate	21.00%	21.00%	21.00%
Base year allowance for loan losses	$ 2,200,000	$ 2,200,000
Unrecognized deferred tax liability	528,000	528,000
Unrecognized tax benefits	0	0
Income tax accrued interest and penalties	$ 0	$ 0

EMPLOYEE BENEFIT PLANS - Activi

EMPLOYEE BENEFIT PLANS - Activity related to options under all plans (Details) - $ / shares	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Number of Shares
Balance, beginning of year	23,332	43,332	101,332
Options exercised	(6,000)	(20,000)	(58,000)
Balance, end of year	17,332	23,332	43,332
Weighted Average Exercise Price
Balance, beginning of year	$ 2.78	$ 2.69	$ 3.26
Options exercised	2.78	2.58	3.69
Balance, end of year	$ 2.78	$ 2.78	$ 2.69

EMPLOYEE BENEFIT PLANS - Additi

EMPLOYEE BENEFIT PLANS - Additional information regarding options outstanding, by exercise price range (Details) - Stock options - $1.00 - $3.00	12 Months Ended
	Mar. 31, 2022$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of Exercise Price, lower	$ 1
Range of Exercise Price, upper	$ 3
Weighted Avg Remaining Contractual Life (years)	1 year 3 months 14 days
Options Outstanding, Number | shares	17,332
Options Outstanding, Weighted Average Exercise Price	$ 2.78
Options Exercisable, Number | shares	17,332
Options Exercisable, Weighted Average Exercise Price	$ 2.78

EMPLOYEE BENEFIT PLANS - Stock

EMPLOYEE BENEFIT PLANS - Stock Options Outstanding, less estimated forfeitures (Details) - USD ($)	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Stock options fully vested and expected to vest:
Number	17,332	23,332
Weighted average exercise price	$ 2.78	$ 2.78
Aggregate intrinsic value (1)	$ 83,000	$ 97,000
Weighted average contractual term of options (years)	1 year 3 months 14 days	2 years 3 months 14 days
Stock options fully vested and currently exercisable:
Number	17,332	23,332
Weighted average exercise price	$ 2.78	$ 2.78
Aggregate intrinsic value (1)	$ 83,000	$ 97,000
Weighted average contractual term of options (years)	1 year 3 months 14 days	2 years 3 months 14 days

EMPLOYEE BENEFIT PLANS - Restri

EMPLOYEE BENEFIT PLANS - Restricted Stock Activity (Details) - $ / shares	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Time Based
Number of Unvested Shares
Balance, beginning of period	45,616
Granted	15,274	19,453
Forfeited	(4,417)
Vested	(29,618)
Balance, end of period	26,855	45,616
Weighted Average Grant Date Fair Value
Balance, beginning of period	$ 6.57
Granted	7.08
Forfeited	5.82
Vested	7.43
Balance, end of period	$ 6.02	$ 6.57
Performance Based
Number of Unvested Shares
Balance, beginning of period	96,772
Granted	54,011	71,310
Forfeited	(16,559)
Vested	(12,732)
Balance, end of period	121,492	96,772
Weighted Average Grant Date Fair Value
Balance, beginning of period	$ 5.27
Granted	7.06
Forfeited	5.55
Vested	8.35
Balance, end of period	$ 5.70	$ 5.27
Restricted stock
Number of Unvested Shares
Balance, beginning of period	142,388
Granted	69,285	90,763
Forfeited	(20,976)
Vested	(42,350)
Balance, end of period	148,347	142,388
Weighted Average Grant Date Fair Value
Balance, beginning of period	$ 5.69
Granted	7.06
Forfeited	5.61
Vested	7.71
Balance, end of period	$ 5.76	$ 5.69

EMPLOYEE BENEFIT PLANS - Addi_2

EMPLOYEE BENEFIT PLANS - Additional Information (Details) - USD ($)	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options exercised (in shares)	6,000	20,000	58,000
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of stock options granted	0	0	0
Stock options | Trust Company | President and Chief Executive Officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based Compensation Expense		$ 44,000
Restricted stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense	$ 401,000	348,000
Stock based Compensation Expense	$ 319,000	$ 352,000	$ 302,000
Number of stock awards granted	69,285	90,763
Shares cancelled	20,976
Restricted stock | Weighted average
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	1 year 6 months 10 days	1 year 7 months 17 days
Performance Based
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of stock awards granted	54,011	71,310
Shares cancelled	16,559
Time Based
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of stock awards granted	15,274	19,453
Shares cancelled	4,417
Retirement Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expenses related to plan	$ 529,000	$ 525,000	$ 561,000
Directors' and Executive Officers' Deferred Compensation Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Deferred compensation plan annual interest rate	2.97%	3.61%	4.46%
Aggregate liability under the plan	$ 237,000	$ 312,000
Stock Option Plans
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum term	10 years
Vesting period	Zero to five years
Number of shares reserved for common stock	1,800,000
Unrecognized compensation expense	$ 0
Stock based Compensation Expense	0	0	$ 0
Total intrinsic value of stock options exercised	$ 25,000	$ 68,000	$ 238,000
Stock Option Plans | President and Chief Executive Officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of stock options granted	500
Stock Option Plans | Trust Company | President and Chief Executive Officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of stock options granted	0	0	0
Stock options exercised (in shares)	500	500

EMPLOYEE BENEFIT PLANS - Employ

EMPLOYEE BENEFIT PLANS - Employee stock ownership plan (Details)	12 Months Ended
	Mar. 31, 2022USD ($)itemshares	Mar. 31, 2021USD ($)itemshares	Mar. 31, 2020USD ($)itemshares
Employee stock ownership plan [Abstract]
Number of hours of service | item	1,000	1,000	1,000
Bank purchased common stock on open market and contributed such shares to ESOP	25,000	5,354	43,545
Unreleased ESOP shares to participants			19,000
Expense related to ESOP | $	$ 192,000	$ 96,000	$ 195,000
Shares released and allocated to participants	387,588	394,316

SHAREHOLDERS' EQUITY AND REGU_3

SHAREHOLDERS' EQUITY AND REGULATORY CAPITAL REQUIREMENTS - Compliance with Regulatory Capital Requirements under Banking Regulations (Details) $ in Thousands	Mar. 31, 2022USD ($)	Mar. 31, 2021USD ($)
Shareholders Equity And Regulatory Capital Requirements [Abstract]
Total capital to risk weighted assets actual amount	$ 168,486	$ 151,555
Total capital to risk weighted assets actual ratio	16.38	17.35
Total capital to risk weighted assets for capital adequacy purposes amount	$ 82,305	$ 69,879
Total capital to risk weighted assets for capital adequacy purposes ratio	8	8
Total capital to risk weighted assets for capital adequacy purposes well capitalized under prompt corrective action amount	$ 102,881	$ 87,349
Total capital to risk weighted assets for capital adequacy purposes well capitalized under prompt corrective action ratio	10	10
Tier 1 to risk weighted assets actual amount	$ 155,601	$ 140,529
Tier 1 to risk weighted assets actual ratio	15.12	16.09
Tier 1 to risk weighted assets for capital adequacy purposes amount	$ 61,728	$ 52,409
Tier 1to risk weighted assets for capital adequacy purposes ratio	6	6
Tier 1 to risk weighted assets well capitalized under prompt corrective action amount	$ 82,305	$ 69,879
Tier 1 to risk weighted assets well capitalized under prompt corrective action ratio	8	8
Common equity Tier 1 capital to risk weighted assets actual amount	$ 155,601	$ 140,529
Common equity Tier 1 capital to risk weighted assets actual ratio	15.12	16.09
Common equity Tier 1 to risk weighted assets for capital adequacy purposes amount	$ 46,296	$ 39,307
Common equity Tier 1 to risk weighted assets for capital adequacy purposes ratio	4.5	4.5
Common equity Tier 1 to risk weighted assets well capitalized under prompt corrective action amount	$ 66,872	$ 56,777
Common equity Tier 1 to risk weighted assets well capitalized under prompt corrective action ratio	6.5	6.5
Tier 1 capital leverage to average tangible assets actual amount	$ 155,601	$ 140,529
Tier 1 capital leverage to average tangible assets actual ratio	9.19	9.63
Tier 1 capital leverage to average tangible assets for capital adequacy purposes amount	$ 67,763	$ 58,344
Tier 1 capital leverage to average tangible assets for capital adequacy purposes ratio	4	4
Tier 1 capital leverage to average tangible assets well capitalized under prompt corrective action amount	$ 84,704	$ 72,930
Tier 1 capital leverage to average tangible assets well capitalized under prompt corrective action ratio	5	5

EARNINGS PER SHARE - Earnings P

EARNINGS PER SHARE - Earnings Per Share, Basic and Diluted (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Basic EPS computation:
Numerator-net income (in dollars)	$ 4,125	$ 5,510	$ 6,430	$ 5,755	$ 3,414	$ 4,035	$ 2,543	$ 480	$ 21,820	$ 10,472	$ 15,748
Denominator-weighted average common shares outstanding									22,213,029	22,296,195	22,707,624
Basic EPS (in dollars per share)	$ 0.19	$ 0.25	$ 0.29	$ 0.26	$ 0.15	$ 0.18	$ 0.11	$ 0.02	$ 0.98	$ 0.47	$ 0.69
Diluted EPS computation:
Numerator-net income (in dollars)	$ 4,125	$ 5,510	$ 6,430	$ 5,755	$ 3,414	$ 4,035	$ 2,543	$ 480	$ 21,820	$ 10,472	$ 15,748
Denominator-weighted average common shares outstanding									22,213,029	22,296,195	22,707,624
Effect of dilutive stock options									12,000	17,000	36,000
Weighted average common shares and common stock equivalents									22,224,947	22,312,831	22,744,045
Diluted EPS (in dollars per share)	$ 0.19	$ 0.25	$ 0.29	$ 0.26	$ 0.15	$ 0.18	$ 0.11	$ 0.02	$ 0.98	$ 0.47	$ 0.69

EARNINGS PER SHARE - Additional

EARNINGS PER SHARE - Additional information (Details) - USD ($)	Dec. 20, 2021	Apr. 17, 2020	Mar. 31, 2022	Dec. 20, 2021	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020	Jun. 30, 2021	Feb. 29, 2020
EARNINGS PER SHARE
Antidilutive securities excluded from computation of earnings per share, amount					0	0	0
Stock repurchased					$ 1,940,000	$ 1,447,000	$ 1,019,000
Repurchase program
EARNINGS PER SHARE
Maximum number of common shares to be repurchased									500,000
Maximum shares repurchase amount			$ 5,000,000		$ 5,000,000			$ 5,000,000
Stock repurchased			$ 216,000	$ 1,700,000
Shares repurchased		295,900					204,100
Average price	$ 6.89	$ 4.85	$ 7.63				$ 4.94

FAIR VALUE MEASUREMENTS - Estim

FAIR VALUE MEASUREMENTS - Estimated Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Transfers of assets from level 1 to level 2	$ 0	$ 0
Transfers of assets from level 2 to level 1	0	0
Transfers of assets into level 3	0	0
Transfers of assets out of level 3	0	0
Recurring basis
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value on a recurring basis	165,782	216,304
Recurring basis | Municipal securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value on a recurring basis	39,604	23,566
Recurring basis | Agency securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value on a recurring basis	40,705	25,315
Recurring basis | Real estate mortgage investment conduits
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value on a recurring basis	32,717	55,815
Recurring basis | Residential mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value on a recurring basis	16,945	72,248
Recurring basis | Other mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value on a recurring basis	35,811	39,360
Recurring basis | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value on a recurring basis	165,782	216,304
Recurring basis | Level 2 | Municipal securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value on a recurring basis	39,604	23,566
Recurring basis | Level 2 | Agency securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value on a recurring basis	40,705	25,315
Recurring basis | Level 2 | Real estate mortgage investment conduits
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value on a recurring basis	32,717	55,815
Recurring basis | Level 2 | Residential mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value on a recurring basis	16,945	72,248
Recurring basis | Level 2 | Other mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value on a recurring basis	$ 35,811	$ 39,360

FAIR VALUE MEASUREMENTS - Asset

FAIR VALUE MEASUREMENTS - Assets Measured at Fair Value on a Non-recurring Basis (Details) - Nonrecurring basis - Impaired loans - USD ($) $ in Thousands	Mar. 31, 2022	Mar. 31, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total nonrecurring assets measured at fair value	$ 228	$ 241
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total nonrecurring assets measured at fair value	$ 228	$ 241

FAIR VALUE MEASUREMENTS - Level

FAIR VALUE MEASUREMENTS - Level 3 inputs for financial instruments measured at fair value (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired Loans Valuation Technique [Extensible Enumeration]	us-gaap:ValuationTechniqueDiscountedCashFlowMember	us-gaap:ValuationTechniqueDiscountedCashFlowMember
Impaired Loans Measurement Input [Extensible Enumeration]	us-gaap:MeasurementInputDiscountRateMember	us-gaap:MeasurementInputDiscountRateMember
Adjustments to the appraised values of impaired loans	$ 0	$ 0
Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	5.375%	5.375%
Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	8.00%	8.00%

FAIR VALUE MEASUREMENTS - Carry

FAIR VALUE MEASUREMENTS - Carrying Amount and Estimated Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Mar. 31, 2021
Carrying Value | Cash and cash equivalents
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	$ 241,424	$ 265,408
Carrying Value | Certificates of deposit held for investment
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	249	249
Carrying Value | Investment securities available for sale
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	165,782	216,304
Carrying Value | Investment securities held to maturity
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	253,100	39,574
Carrying Value | Loans Receivable.
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	975,885	924,057
Carrying Value | FHLB stock
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	2,019	1,722
Carrying Value | Certificates of deposit
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liabilities	111,372	120,625
Carrying Value | Junior subordinated debentures.
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liabilities	26,833	26,748
Total Estimated Fair Value | Cash and cash equivalents
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	241,424	265,408
Total Estimated Fair Value | Certificates of deposit held for investment
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	253	262
Total Estimated Fair Value | Investment securities available for sale
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	165,782	216,304
Total Estimated Fair Value | Investment securities held to maturity
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	236,029	38,220
Total Estimated Fair Value | Loans Receivable.
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	962,893	920,102
Total Estimated Fair Value | FHLB stock
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	2,019	1,722
Total Estimated Fair Value | Certificates of deposit
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liabilities	109,860	121,610
Total Estimated Fair Value | Junior subordinated debentures.
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liabilities	16,046	14,434
Level 1 | Cash and cash equivalents
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	241,424	265,408
Level 2 | Certificates of deposit held for investment
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	253	262
Level 2 | Investment securities available for sale
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	165,782	216,304
Level 2 | Investment securities held to maturity
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	236,029	38,220
Level 2 | FHLB stock
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	2,019	1,722
Level 2 | Certificates of deposit
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liabilities	109,860	121,610
Level 3 | Loans Receivable.
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	962,893	920,102
Level 3 | Junior subordinated debentures.
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liabilities	$ 16,046	$ 14,434

REVENUE FROM CONTRACTS WITH C_3

REVENUE FROM CONTRACTS WITH CUSTOMERS (Details) - USD ($)	3 Months Ended								12 Months Ended
	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Revenue from External Customer [Line Items]
BOLI									$ 800,000	$ 813,000	$ 864,000
Net gains on sales of loans held for sale										28,000	252,000
Contract with customer liability	$ 0				$ 0				0	0
Revenue remaining performance obligation	0				0				0	0
FHLMC loan servicing fees									85,000	94,000	147,000
Total non-interest income, net	$ 2,966,000	$ 3,116,000	$ 3,074,000	$ 3,588,000	$ 2,836,000	$ 2,812,000	$ 2,819,000	$ 2,623,000	12,744,000	11,090,000	12,360,000
Asset management fees.
Revenue from External Customer [Line Items]
Non-interest income									4,107,000	3,646,000	4,408,000
Debit card and ATM fees
Revenue from External Customer [Line Items]
Non-interest income									3,499,000	3,103,000	3,102,000
Deposit related fees
Revenue from External Customer [Line Items]
Non-interest income									1,634,000	1,514,000	2,212,000
Loan related fees
Revenue from External Customer [Line Items]
Non-interest income									1,247,000	1,229,000	605,000
BOLI Death Benefit In Excess Of Cash Surrender Value
Revenue from External Customer [Line Items]
Non-interest income									500,000
BOLI death benefit in excess of cash surrender value									500,000
Other, net
Revenue from External Customer [Line Items]
Non-interest income									$ 872,000	$ 663,000	$ 770,000

COMMITMENTS AND CONTINGENCIES -

COMMITMENTS AND CONTINGENCIES - Significant Off-balance Sheet Commitments (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Mar. 31, 2021
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Total	$ 159,260	$ 149,458
Commitments to originate loans: | Adjustable-rate
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Total	17,125	6,156
Commitments to originate loans: | Fixed-rate
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Total	2,895	6,522
Standby letters of credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Total	1,780	1,999
Undisbursed loan funds and unused lines of credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Total	$ 137,460	$ 134,781

COMMITMENTS AND CONTINGENCIES_2

COMMITMENTS AND CONTINGENCIES - Additional Information (Details)	12 Months Ended
	Mar. 31, 2022USD ($)
COMMITMENTS AND CONTINGENCIES
Threshold limit for honoring of commitments	45 days
Commitments to sell	$ 0
Loans under warranty	44,100,000
Allowance for FHLMC loans	$ 12,000

LEASES - Lease Right-of-use Ass

LEASES - Lease Right-of-use Assets and Lease Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Mar. 31, 2021
LEASES
Finance lease right-of-use asset	$ 1,355	$ 1,432
Finance lease liability	$ 2,283	$ 2,329
Finance lease remaining lease term	17 years 8 months 4 days	18 years 8 months 4 days
Finance lease discount rate	7.16%	7.16%
Operating lease right-of-use assets	$ 7,907	$ 8,782
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Prepaid Expense and Other Assets.	Prepaid Expense and Other Assets.
Operating lease liabilities	$ 8,306	$ 9,201
Operating Lease, Liability, Statement of Financial Position [Extensible List]	us-gaap:AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent	us-gaap:AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent
Operating lease weighted-average remaining lease term	7 years 7 days	7 years 10 months 13 days
Operating lease weighted-average discount rate	1.81%	1.77%

LEASES - Lease Costs for Operat

LEASES - Lease Costs for Operating Leases (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
LEASES
Finance lease amortization of ROU asset	$ 77	$ 77	$ 77
Finance lease interest on lease liability	165	168	171
Operating lease costs	1,266	1,312	1,508
Variable lease costs	209	209	209
Total lease cost	$ 1,717	$ 1,766	$ 1,965

LEASES - Undiscounted Cash Flow

LEASES - Undiscounted Cash Flows (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Mar. 31, 2021
Operating Leases
2023	$ 1,352
2024	1,370
2025	1,375
2026	1,125
2027	1,116
Thereafter	2,531
Total minimum lease payments	8,869
Less: amount of lease payment representing interest	(563)
Lease liabilities	$ 8,306	$ 9,201
Operating Lease, Liability, Statement of Financial Position [Extensible List]	us-gaap:AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent	us-gaap:AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent
Finance Lease
2023	$ 215
2024	219
2025	222
2026	226
2027	230
Thereafter	2,944
Total minimum lease payments	4,056
Less: amount of lease payment representing interest	(1,773)
Lease liabilities	$ 2,283	$ 2,329

LEASES - Additional Information

LEASES - Additional Information (Details) - USD ($)	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
LEASES
Operating lease	$ 1,500,000	$ 1,500,000	$ 1,700,000
ROU lease assets obtained in exchange for operating lease liabilities	$ 441,000	$ 6,148,000	$ 5,603,000

RIVERVIEW BANCORP, INC. (PARE_3

RIVERVIEW BANCORP, INC. (PARENT COMPANY ONLY) - BALANCE SHEETS (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Mar. 31, 2021
ASSETS
Cash and cash equivalents	$ 241,424	$ 265,408
TOTAL ASSETS	1,740,096	1,549,158
LIABILITIES AND SHAREHOLDERS' EQUITY
Accrued expenses and other liabilities	19,298	21,906
Shareholders' equity	157,249	151,594
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	1,740,096	1,549,158
RIVERVIEW BANCORP, INC. (PARENT COMPANY ONLY).
ASSETS
Cash and cash equivalents	10,867	10,006
Investment in the Bank	173,223	168,064
Other assets	1,321	1,454
TOTAL ASSETS	185,411	179,524
LIABILITIES AND SHAREHOLDERS' EQUITY
Accrued expenses and other liabilities	112	64
Dividend payable	1,217	1,118
Borrowings	26,833	26,748
Shareholders' equity	157,249	151,594
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$ 185,411	$ 179,524

RIVERVIEW BANCORP, INC. (PARE_4

RIVERVIEW BANCORP, INC. (PARENT COMPANY ONLY) - STATEMENTS OF INCOME (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
EXPENSE:
Total expense	$ 10,115	$ 9,279	$ 8,187	$ 9,137	$ 9,626	$ 9,107	$ 8,836	$ 8,685	$ 36,718	$ 36,254	$ 36,263
LOSS BEFORE INCOME TAXES AND EQUITY IN UNDISTRIBUTED INCOME OF THE BANK	5,407	7,171	8,363	7,335	4,406	5,234	3,247	566	28,276	13,453	20,578
BENEFIT FOR INCOME TAXES	1,282	1,661	1,933	1,580	992	1,199	704	86	6,456	2,981	4,830
NET INCOME	4,125	$ 5,510	$ 6,430	$ 5,755	3,414	$ 4,035	$ 2,543	$ 480	21,820	10,472	15,748
RIVERVIEW BANCORP, INC. (PARENT COMPANY ONLY)
INCOME:
Interest on investment securities and other short-term investments									16	17	33
Total income									16	17	33
EXPENSE:
Management service fees paid to the Bank									143	143	143
Other expenses									670	731	1,233
Total expense									813	874	1,376
LOSS BEFORE INCOME TAXES AND EQUITY IN UNDISTRIBUTED INCOME OF THE BANK									(797)	(857)	(1,343)
BENEFIT FOR INCOME TAXES									(167)	(180)	(282)
LOSS OF PARENT COMPANY									(630)	(677)	(1,061)
EQUITY IN UNDISTRIBUTED INCOME OF THE BANK	$ 22,450				$ 11,149				22,450	11,149	16,809
NET INCOME									$ 21,820	$ 10,472	$ 15,748

RIVERVIEW BANCORP, INC. (PARE_5

RIVERVIEW BANCORP, INC. (PARENT COMPANY ONLY) - STATEMENTS OF CASH FLOWS (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 4,125	$ 5,510	$ 6,430	$ 5,755	$ 3,414	$ 4,035	$ 2,543	$ 480	$ 21,820	$ 10,472	$ 15,748
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Stock based compensation									319	396	346
Changes in assets and liabilities:
Net cash used in operating activities									16,463	24,167	15,917
CASH FLOWS FROM INVESTING ACTIVITIES:
Net cash provided by investing activities									(221,659)	(150,247)	(878)
CASH FLOWS FROM FINANCING ACTIVITIES:
Dividends paid									(4,670)	(4,478)	(4,075)
Proceeds from exercise of stock options									16	50	227
Repurchase of common stock									(1,940)	(1,447)	(1,019)
Net cash used in financing activities									181,212	349,520	3,979
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS									(23,984)	223,440	19,018
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD				265,408				41,968	265,408	41,968	22,950
CASH AND CASH EQUIVALENTS, END OF PERIOD	241,424				265,408				241,424	265,408	41,968
RIVERVIEW BANCORP, INC. (PARENT COMPANY ONLY)
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income									21,820	10,472	15,748
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Equity in undistributed income of the Bank									(22,450)	(11,149)	(16,809)
Amortization									85	86	87
Provision for deferred income taxes									2
Stock based compensation									319	396	346
Changes in assets and liabilities:
Other assets									131	224	(278)
Accrued expenses and other liabilities									48	(417)	364
Net cash used in operating activities									(45)	(388)	(542)
CASH FLOWS FROM INVESTING ACTIVITIES:
Dividend from the Bank									7,500	6,000	11,500
Net cash provided by investing activities									7,500	6,000	11,500
CASH FLOWS FROM FINANCING ACTIVITIES:
Dividends paid									(4,670)	(4,478)	(4,075)
Proceeds from exercise of stock options									16	50	227
Repurchase of common stock									(1,940)	(1,447)	(1,019)
Net cash used in financing activities									(6,594)	(5,875)	(4,867)
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS									861	(263)	6,091
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD				$ 10,006				$ 10,269	10,006	10,269	4,178
CASH AND CASH EQUIVALENTS, END OF PERIOD	$ 10,867				$ 10,006				$ 10,867	$ 10,006	$ 10,269

RIVERVIEW BANCORP, INC. (PARE_6

RIVERVIEW BANCORP, INC. (PARENT COMPANY ONLY) - SELECTED QUARTERLY FINANCIAL DATA (UNAUDITED) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
SELECTED QUARTERLY FINANCIAL DATA (UNAUDITED):
Interest and dividend income	$ 12,389	$ 12,551	$ 12,965	$ 11,920	$ 11,865	$ 12,292	$ 11,949	$ 12,238	$ 49,825	$ 48,344	$ 50,495
Interest expense	483	492	589	636	669	763	885	1,110	2,200	3,427	4,764
Net interest income	11,906	12,059	12,376	11,284	11,196	11,529	11,064	11,128	47,625	44,917	45,731
Provision for loan losses	(650)	(1,275)	(1,100)	(1,600)			1,800	4,500	(4,625)	6,300	1,250
Non-interest income, net	2,966	3,116	3,074	3,588	2,836	2,812	2,819	2,623	12,744	11,090	12,360
Non-interest expense	10,115	9,279	8,187	9,137	9,626	9,107	8,836	8,685	36,718	36,254	36,263
Income before income taxes	5,407	7,171	8,363	7,335	4,406	5,234	3,247	566	28,276	13,453	20,578
Provision for income taxes	1,282	1,661	1,933	1,580	992	1,199	704	86	6,456	2,981	4,830
Net income	$ 4,125	$ 5,510	$ 6,430	$ 5,755	$ 3,414	$ 4,035	$ 2,543	$ 480	$ 21,820	$ 10,472	$ 15,748
Basic earnings per common share (1)	$ 0.19	$ 0.25	$ 0.29	$ 0.26	$ 0.15	$ 0.18	$ 0.11	$ 0.02	$ 0.98	$ 0.47	$ 0.69
Diluted earnings per common share (1)	$ 0.19	$ 0.25	$ 0.29	$ 0.26	$ 0.15	$ 0.18	$ 0.11	$ 0.02	$ 0.98	$ 0.47	$ 0.69