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ALLOWANCE FOR LOAN LOSSES: Financing Receivables, Aging of Loans (Details 2) - USD ($) $ in Thousands | Sep. 30, 2018 | Mar. 31, 2018
--- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Non-accrual | $ 2,283 | $ 2,418
Total Past Due and Non-accrual | 2,975 | 2,938
Current | 846,867 | 808,438
Total Loans Receivable | 849,842 | 811,376
30-89 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Past Due | 692 | 520
90 Days and Greater Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Past Due | 0 | 0
Commercial and construction |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans Receivable | 751,540 | 706,270
Commercial and construction | Commercial business |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Non-accrual | 168 | 178
Total Past Due and Non-accrual | 296 | 185
Current | 155,191 | 137,487
Total Loans Receivable | 155,487 | 137,672
Commercial and construction | Commercial business | 30-89 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Past Due | 128 | 7
Commercial and construction | Commercial business | 90 Days and Greater Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Past Due | 0 | 0
Commercial and construction | Commercial real estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Non-accrual | 1,135 | 1,200
Total Past Due and Non-accrual | 1,298 | 1,200
Current | 461,079 | 449,397
Total Loans Receivable | 462,377 | 450,597
Commercial and construction | Commercial real estate | 30-89 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Past Due | 163 | 0
Commercial and construction | Commercial real estate | 90 Days and Greater Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Past Due | 0 | 0
Commercial and construction | Land |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Non-accrual | 740 | 763
Total Past Due and Non-accrual | 740 | 763
Current | 15,199 | 14,574
Total Loans Receivable | 15,939 | 15,337
Commercial and construction | Land | 30-89 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Past Due | 0 | 0
Commercial and construction | Land | 90 Days and Greater Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Past Due | 0 | 0
Commercial and construction | Multi-family |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Non-accrual | 0 | 0
Total Past Due and Non-accrual | 0 | 0
Current | 54,942 | 63,080
Total Loans Receivable | 54,942 | 63,080
Commercial and construction | Multi-family | 30-89 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Past Due | 0 | 0
Commercial and construction | Multi-family | 90 Days and Greater Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Past Due | 0 | 0
Commercial and construction | Real estate construction |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Non-accrual | 0 | 0
Total Past Due and Non-accrual | 0 | 0
Current | 62,795 | 39,584
Total Loans Receivable | 62,795 | 39,584
Commercial and construction | Real estate construction | 30-89 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Past Due | 0 | 0
Commercial and construction | Real estate construction | 90 Days and Greater Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Past Due | 0 | 0
Consumer |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Non-accrual | 240 | 277
Total Past Due and Non-accrual | 641 | 790
Current | 97,661 | 104,316
Total Loans Receivable | 98,302 | 105,106
Consumer | 30-89 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Past Due | 401 | 513
Consumer | 90 Days and Greater Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Past Due | $ 0 | $ 0

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