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Loans Receivable Held for Investment - Loans Individually Evaluated for Impairment by Loan Type (Details) - USD ($) $ in Thousands | Sep. 30, 2018 | Dec. 31, 2017
--- | --- | ---
Impaired loans |  |
Unpaid Principal Balance | $ 10,250 | $ 11,193
Recorded Investment | 8,425 | 9,305
Allowance for Loan Losses Allocated, With an allowance recorded | 424 | 585
Single family |  |
Impaired loans |  |
Unpaid Principal Balance, With an allowance recorded | 614 | 627
Recorded Investment, With an allowance recorded | 614 | 627
Allowance for Loan Losses Allocated, With an allowance recorded | 55 | 100
Multi-family |  |
Impaired loans |  |
Unpaid Principal Balance, With no related allowance recorded | 326 |
Unpaid Principal Balance, With an allowance recorded |  | 333
Recorded Investment, With no related allowance recorded | 326 |
Recorded Investment, With an allowance recorded |  | 333
Allowance for Loan Losses Allocated, With an allowance recorded |  | 1
Church |  |
Impaired loans |  |
Unpaid Principal Balance, With no related allowance recorded | 4,697 | 5,140
Unpaid Principal Balance, With an allowance recorded | 4,549 | 5,028
Recorded Investment, With no related allowance recorded | 2,872 | 3,291
Recorded Investment, With an allowance recorded | 4,549 | 4,989
Allowance for Loan Losses Allocated, With an allowance recorded | 365 | 479
Commercial - other |  |
Impaired loans |  |
Unpaid Principal Balance, With an allowance recorded | 64 | 65
Recorded Investment, With an allowance recorded | 64 | 65
Allowance for Loan Losses Allocated, With an allowance recorded | $ 4 | $ 5

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