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ALLOWANCE FOR LOAN LOSSES: Schedule of Credit Quality Indicators (Details 3) - USD ($) $ in Thousands	Dec. 31, 2017	Mar. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	$ 797,327	$ 779,432
Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	777,559	756,388
Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	13,163	13,036
Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	6,605	10,008
Doubtful
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	0	0
Loss
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	0	0
Commercial Business
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	130,960	107,371
Commercial Business | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	126,764	102,113
Commercial Business | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	1,771	2,063
Commercial Business | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	2,425	3,195
Commercial Business | Doubtful
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	0	0
Commercial Business | Loss
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	0	0
Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	441,903	447,071
Commercial Real Estate | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	429,613	430,923
Commercial Real Estate | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	9,197	10,426
Commercial Real Estate | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	3,093	5,722
Commercial Real Estate | Doubtful
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	0	0
Commercial Real Estate | Loss
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	0	0
Land
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	12,469	15,875
Land | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	11,699	15,074
Land | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	0	0
Land | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	770	801
Land | Doubtful
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	0	0
Land | Loss
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	0	0
Multi-Family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	61,851	43,715
Multi-Family | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	59,645	43,156
Multi-Family | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	2,195	547
Multi-Family | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	11	12
Multi-Family | Doubtful
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	0	0
Multi-Family | Loss
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	0	0
Real Estate Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	40,743	46,157
Real Estate Construction | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	40,743	46,157
Real Estate Construction | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	0	0
Real Estate Construction | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	0	0
Real Estate Construction | Doubtful
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	0	0
Real Estate Construction | Loss
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	0	0
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	109,401	119,243
Consumer | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	109,095	118,965
Consumer | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	0	0
Consumer | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	306	278
Consumer | Doubtful
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	0	0
Consumer | Loss
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	$ 0	$ 0

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.10(3))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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