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ALLOWANCE FOR LOAN LOSSES: Schedule of TDRs by Interest Accrual Status (Details 7) - USD ($) $ in Thousands	Mar. 31, 2017	Mar. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accrual	$ 9,429	$ 11,845
Nonaccrual	2,437	2,090
Total	11,866	13,935
Commercial and construction | Commercial business
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accrual		192
Nonaccrual	294
Total	294	192
Commercial and construction | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accrual	6,262	8,244
Nonaccrual	1,342	1,289
Total	7,604	9,533
Commercial and construction | Land
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accrual
Nonaccrual	801	801
Total	801	801
Commercial and construction | Multi-family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accrual	1,692	1,731
Nonaccrual
Total	1,692	1,731
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accrual	1,475	1,678
Nonaccrual
Total	$ 1,475	$ 1,678

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