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ALLOWANCE FOR LOAN LOSSES: Impaired Financing Receivables (Details 4) - USD ($) $ in Thousands	Sep. 30, 2017	Mar. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment with No Specific Valuation Allowance	$ 6,475	$ 10,697
Recorded Investment with Specific Valuation Allowance	2,247	1,169
Total Recorded Investment	8,722	11,866
Unpaid Principal Balance	10,126	13,351
Related Specific Valuation Allowance	150	88
Commercial Business
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment with No Specific Valuation Allowance	1,117	294
Total Recorded Investment	1,117	294
Unpaid Principal Balance	1,336	301
Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment with No Specific Valuation Allowance	2,609	7,604
Recorded Investment with Specific Valuation Allowance	1,095
Total Recorded Investment	3,704	7,604
Unpaid Principal Balance	4,628	8,806
Related Specific Valuation Allowance	71
Land
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment with No Specific Valuation Allowance	780	801
Total Recorded Investment	780	801
Unpaid Principal Balance	800	807
Multi-Family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment with No Specific Valuation Allowance	1,669	1,692
Total Recorded Investment	1,669	1,692
Unpaid Principal Balance	1,797	1,826
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment with No Specific Valuation Allowance	300	306
Recorded Investment with Specific Valuation Allowance	1,152	1,169
Total Recorded Investment	1,452	1,475
Unpaid Principal Balance	1,565	1,611
Related Specific Valuation Allowance	$ 79	$ 88

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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 14A
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953550-111524

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+ 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 (a)(3)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5212-111524

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+ 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 (a)(4)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5212-111524

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 14A
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953550-111524

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 14A
-Subparagraph (b)
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