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Loans Receivable, Net - Impaired Loans (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Mar. 31, 2018 | Mar. 31, 2017
Impaired Financing Receivable, Recorded Investment |  |
Impaired Financing Receivable, Recorded Investment | $ 13,037 | $ 14,693
Impaired Financing Receivable, Unpaid Principal Balance |  |
Impaired Financing Receivable, Unpaid Principal Balance | 14,621 | 16,141
Impaired Financing Receivable, Related Allowance | 315 | 361
Impaired Financing Receivable, Average Recorded Investment |  |
Impaired Financing Receivable, Average Recorded Investment | 13,842 | 16,082
Impaired Financing Receivable, Interest Income, Cash Basis Method |  |
Impaired Financing Receivable, Interest Income, Cash Basis Method | 100 | 210
One-to-four family |  |
Impaired Financing Receivable, Recorded Investment |  |
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 5,439 | 3,416
Impaired Financing Receivable, with Related Allowance, Recorded Investment | 1,065 | 2,091
Impaired Financing Receivable, Unpaid Principal Balance |  |
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance | 6,862 | 4,210
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance | 1,065 | 2,215
Impaired Financing Receivable, Related Allowance | 145 | 306
Impaired Financing Receivable, Average Recorded Investment |  |
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment | 5,375 | 3,151
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment | 1,078 | 2,128
Impaired Financing Receivable, Interest Income, Cash Basis Method |  |
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method | 36 | 14
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method | 0 | 5
Multifamily |  |
Impaired Financing Receivable, Recorded Investment |  |
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 964 | 1,596
Impaired Financing Receivable, with Related Allowance, Recorded Investment | 741 | 6
Impaired Financing Receivable, Unpaid Principal Balance |  |
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance | 1,122 | 2,081
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance | 741 | 6
Impaired Financing Receivable, Related Allowance | 75 | 6
Impaired Financing Receivable, Average Recorded Investment |  |
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment | 1,340 | 1,747
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment | 248 | 1
Impaired Financing Receivable, Interest Income, Cash Basis Method |  |
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method | 34 | 6
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method | 0 | 0
Commercial real estate |  |
Impaired Financing Receivable, Recorded Investment |  |
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 1,539 | 993
Impaired Financing Receivable, with Related Allowance, Recorded Investment | 0 | 2,502
Impaired Financing Receivable, Unpaid Principal Balance |  |
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance | 1,539 | 993
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance | 0 | 2,502
Impaired Financing Receivable, Related Allowance | 0 | 6
Impaired Financing Receivable, Average Recorded Investment |  |
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment | 2,075 | 1,774
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment | 541 | 1,427
Impaired Financing Receivable, Interest Income, Cash Basis Method |  |
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method | 28 | 17
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method | 0 | 0
Business |  |
Impaired Financing Receivable, Recorded Investment |  |
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 611 | 1,923
Impaired Financing Receivable, with Related Allowance, Recorded Investment | 2,678 | 2,164
Impaired Financing Receivable, Unpaid Principal Balance |  |
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance | 611 | 1,968
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance | 2,681 | 2,164
Impaired Financing Receivable, Related Allowance | 95 | 41
Impaired Financing Receivable, Average Recorded Investment |  |
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment | 827 | 3,667
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment | 2,358 | 2,187
Impaired Financing Receivable, Interest Income, Cash Basis Method |  |
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method | 0 | 142
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method | 2 | 26
Consumer |  |
Impaired Financing Receivable, Recorded Investment |  |
Impaired Financing Receivable, with Related Allowance, Recorded Investment | 0 | 2
Impaired Financing Receivable, Unpaid Principal Balance |  |
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance | 0 | 2
Impaired Financing Receivable, Related Allowance | 0 | 2
Impaired Financing Receivable, Average Recorded Investment |  |
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment | 0 | 1
Impaired Financing Receivable, Interest Income, Cash Basis Method |  |
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method | $ 0 | $ 0

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