ALLOWANCE FOR LOAN LOSSES: Impaired Loans, Average Recorded Investment and Interest Recognized (Details 6) - USD ($) $ in Thousands	12 Months Ended
Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Recorded Investment	$ 9,016	$ 13,118	$ 18,262
Interest Recognized on Impaired Loans	294	502	644
Commercial and construction \| Commercial business
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Recorded Investment	930	255	542
Interest Recognized on Impaired Loans	41	10	17
Commercial and construction \| Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Recorded Investment	4,185	8,823	13,130
Interest Recognized on Impaired Loans	101	337	456
Commercial and construction \| Land
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Recorded Investment	781	801	801
Interest Recognized on Impaired Loans	0	0	0
Commercial and construction \| Multi-family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Recorded Investment	1,668	1,710	1,842
Interest Recognized on Impaired Loans	90	93	99
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Recorded Investment	1,452	1,529	1,947
Interest Recognized on Impaired Loans	$ 62	$ 62	$ 72

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Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5212-111524

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 17
-URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5258-111524

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Amount of interest income recognized that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired.

+ References

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