Allowance for Loan Losses: Financing Receivables, Aging of loans (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Mar. 31, 2015
Financing Receivable Recorded Investment, 30 to 89 days past due	$ 855	$ 1,486
Financing Receivable Recorded Investment, 90 days and greater, past due	14
Financing Receivable, Recorded Investment, Nonaccrual Status	3,757	5,318
Financing Receivable Recorded Investment, Past Due and Non-accrual	4,626	6,804
Financing Receivable, Recorded Investment, Current	591,271	572,968
Loans and Leases Receivable, Gross	595,897	579,772
Commercial business
Financing Receivable Recorded Investment, 30 to 89 days past due	195	359
Financing Receivable Recorded Investment, Past Due and Non-accrual	195	359
Financing Receivable, Recorded Investment, Current	77,943	76,827
Loans and Leases Receivable, Gross	78,138	77,186
Commercial Real Estate
Financing Receivable Recorded Investment, 30 to 89 days past due	222	225
Financing Receivable, Recorded Investment, Nonaccrual Status	2,525	3,291
Financing Receivable Recorded Investment, Past Due and Non-accrual	2,747	3,516
Financing Receivable, Recorded Investment, Current	328,691	296,175
Loans and Leases Receivable, Gross	331,438	299,691
Land
Financing Receivable, Recorded Investment, Nonaccrual Status	801	801
Financing Receivable Recorded Investment, Past Due and Non-accrual	801	801
Financing Receivable, Recorded Investment, Current	13,301	14,557
Loans and Leases Receivable, Gross	14,102	15,358
Multi-Family
Financing Receivable, Recorded Investment, Current	34,989	30,457
Loans and Leases Receivable, Gross	34,989	30,457
Real estate construction
Financing Receivable, Recorded Investment, Current	17,304	30,498
Loans and Leases Receivable, Gross	17,304	30,498
Consumer
Financing Receivable Recorded Investment, 30 to 89 days past due	438	902
Financing Receivable Recorded Investment, 90 days and greater, past due	14
Financing Receivable, Recorded Investment, Nonaccrual Status	431	1,226
Financing Receivable Recorded Investment, Past Due and Non-accrual	883	2,128
Financing Receivable, Recorded Investment, Current	119,043	124,454
Loans and Leases Receivable, Gross	$ 119,926	$ 126,582

Financing receivables that are less than 90 days past due but more than 29 days past due.

No definition available.

Name:	fil_FinancingReceivableRecordedInvestment30To89DaysPastDue
Namespace Prefix:	fil_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Financing receivables that are past due 90 days or greater (past due), as of the indicated date.

+ References

No definition available.

+ Details

Name:	fil_FinancingReceivableRecordedInvestment90DaysAndGreaterPastDue
Namespace Prefix:	fil_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Represents the monetary amount of Financing Receivable Recorded Investment (Past Due and Non-accrual), as of the indicated date.

+ References

No definition available.

+ Details

Name:	fil_FinancingReceivableRecordedInvestmentPastDueAndNonAccrual
Namespace Prefix:	fil_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Financing receivables that are current.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 7A

-URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953401-111524

+ Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Recorded investment in financing receivables that are on nonaccrual status as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 7

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=49124121&loc=d3e5111-111524

+ Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=28367877&loc=d3e4428-111522

+ Details

Name:	us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

Name:	us-gaap_FinancialInstrumentAxis=fil_CommercialBusinessMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancialInstrumentAxis=fil_CommercialRealEstate1Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancialInstrumentAxis=fil_Land1Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancialInstrumentAxis=fil_MultiFamilyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancialInstrumentAxis=fil_RealEstateConstructionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancialInstrumentAxis=fil_TotalConsumerMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: