Loans Receivable Held for Investment - Activity in the Allowance for Loan Losses by Loan Type (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Allowance for loan losses:
Beginning balance	$ 4,183	$ 4,246	$ 4,069	$ 4,603
Provision for (recapture of) loan losses	(1,000)	(300)	(1,000)	(950)
Recoveries		267	114	560
Ending balance	3,183	4,213	3,183	4,213
Single family
Allowance for loan losses:
Beginning balance	517	320	594	367
Provision for (recapture of) loan losses	(120)	219	(197)	142
Recoveries				30
Ending balance	397	539	397	539
Multi-family
Allowance for loan losses:
Beginning balance	2,656	2,719	2,300	2,659
Provision for (recapture of) loan losses	(791)	(297)	(435)	(237)
Ending balance	1,865	2,422	1,865	2,422
Commercial real estate
Allowance for loan losses:
Beginning balance	61	77	71	215
Provision for (recapture of) loan losses	(6)	(4)	(16)	(142)
Ending balance	55	73	55	73
Church
Allowance for loan losses:
Beginning balance	925	1,104	1,081	1,337
Provision for (recapture of) loan losses	(87)	(214)	(357)	(710)
Recoveries		267	114	530
Ending balance	838	1,157	838	1,157
Construction
Allowance for loan losses:
Beginning balance	18	9	17	8
Provision for (recapture of) loan losses	3	5	4	6
Ending balance	21	14	21	14
Commercial - other
Allowance for loan losses:
Beginning balance	6	17	6	17
Provision for (recapture of) loan losses	(1)	(9)	(1)	(9)
Ending balance	5	$ 8	5	$ 8
Consumer
Allowance for loan losses:
Provision for (recapture of) loan losses	2		2
Ending balance	$ 2		$ 2

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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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