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ALLOWANCE FOR LOAN LOSSES: Impaired Loans, Average Recorded Investment and Interest Recognized (Details 5) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Average Recorded Investment | $ 6,180 | $ 8,758 | $ 6,694 | $ 9,794
Interest Recognized on Impaired Loans | 48 | 72 | 102 | 161
Commercial and construction | Commercial business |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Average Recorded Investment | 170 | 1,116 | 448 | 842
Interest Recognized on Impaired Loans | 0 | 4 | 0 | 23
Commercial and construction | Commercial real estate |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Average Recorded Investment | 2,576 | 3,723 | 2,678 | 5,017
Interest Recognized on Impaired Loans | 16 | 31 | 32 | 61
Commercial and construction | Land |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Average Recorded Investment | 745 | 786 | 751 | 791
Interest Recognized on Impaired Loans | 0 | 0 | 0 | 0
Commercial and construction | Multi-family |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Average Recorded Investment | 1,625 | 1,675 | 1,632 | 1,680
Interest Recognized on Impaired Loans | 22 | 22 | 44 | 46
Consumer |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Average Recorded Investment | 1,064 | 1,458 | 1,185 | 1,464
Interest Recognized on Impaired Loans | $ 10 | $ 15 | $ 26 | $ 31

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