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ALLOWANCE FOR LOAN LOSSES: Schedule of TDRs by Interest Accrual Status (Details 6) - USD ($) $ in Thousands	Jun. 30, 2017	Mar. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accrual	$ 6,387	$ 9,429
Nonaccrual	2,406	2,437
Total	8,793	11,866
Commercial Business
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accrual	822
Nonaccrual	292	294
Total	1,114	294
Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accrual	2,420	6,262
Nonaccrual	1,323	1,342
Total	3,743	7,604
Land
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accrual
Nonaccrual	791	801
Total	791	801
Multi-Family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accrual	1,681	1,692
Nonaccrual
Total	1,681	1,692
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accrual	1,464	1,475
Nonaccrual
Total	$ 1,464	$ 1,475

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