Loans Receivable Held for Investment - Activity in the Allowance for Loan Losses by Loan Type (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Allowance for loan losses:
Beginning balance	$ 4,183	$ 4,392	$ 4,069	$ 4,603
Provision for (recapture of) loan losses		(300)		(650)
Recoveries		154	114	293
Ending balance	4,183	4,246	4,183	4,246
Single family
Allowance for loan losses:
Beginning balance	588	330	594	367
Provision for (recapture of) loan losses	(71)	(40)	(77)	(77)
Recoveries		30		30
Ending balance	517	320	517	320
Multi-family
Allowance for loan losses:
Beginning balance	2,508	2,711	2,300	2,659
Provision for (recapture of) loan losses	148	8	356	60
Ending balance	2,656	2,719	2,656	2,719
Commercial real estate
Allowance for loan losses:
Beginning balance	65	75	71	215
Provision for (recapture of) loan losses	(4)	2	(10)	(138)
Ending balance	61	77	61	77
Church
Allowance for loan losses:
Beginning balance	1,005	1,250	1,081	1,337
Provision for (recapture of) loan losses	(80)	(270)	(270)	(496)
Recoveries		124	114	263
Ending balance	925	1,104	925	1,104
Construction
Allowance for loan losses:
Beginning balance	11	9	17	8
Provision for (recapture of) loan losses	7		1	1
Ending balance	18	9	18	9
Commercial - other
Allowance for loan losses:
Beginning balance	6	16	6	17
Provision for (recapture of) loan losses		1
Ending balance	$ 6	17	$ 6	$ 17
Consumer
Allowance for loan losses:
Beginning balance		1
Provision for (recapture of) loan losses		$ (1)

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of recovery of financing receivables doubtful of collection that were previously charged off.

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Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

+ References

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Amount of expense related to estimated loss from loan and lease transactions.

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