Loans Receivable Held for Investment - Activity in the Allowance for Loan Losses by Loan Type (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2017	Dec. 31, 2016
Allowance for loan losses:
Beginning balance	$ 4,603	$ 4,828
Provision for (recapture of) loan losses	(1,100)	(550)
Recoveries	566	325
Ending balance	4,069	4,603
Single family
Allowance for loan losses:
Beginning balance	367	597
Provision for (recapture of) loan losses	197	(277)
Recoveries	30	47
Ending balance	594	367
Multi-family
Allowance for loan losses:
Beginning balance	2,659	1,658
Provision for (recapture of) loan losses	(359)	1,001
Ending balance	2,300	2,659
Commercial real estate
Allowance for loan losses:
Beginning balance	215	469
Provision for (recapture of) loan losses	(144)	(502)
Recoveries		248
Ending balance	71	215
Church
Allowance for loan losses:
Beginning balance	1,337	2,083
Provision for (recapture of) loan losses	(792)	(768)
Recoveries	536	22
Ending balance	1,081	1,337
Construction
Allowance for loan losses:
Beginning balance	8	3
Provision for (recapture of) loan losses	9	5
Ending balance	17	8
Commercial - other
Allowance for loan losses:
Beginning balance	17	18
Provision for (recapture of) loan losses	(11)	(9)
Recoveries		8
Ending balance	$ 6	$ 17

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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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