Loans Receivable Held for Investment - Allowance for loan losses and recorded investment in loans by type of loans and based on impairment method (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015	Mar. 31, 2015	Dec. 31, 2014
Ending allowance balance attributable to loans:
Individually evaluated for impairment	$ 809	$ 995
Collectively evaluated for impairment	3,725	3,833
Total ending allowance balance	4,534	4,828	$ 7,671	$ 8,465
Loans:
Loans individually evaluated for impairment	14,912	15,784
Loans collectively evaluated for impairment	309,503	293,215
Gross loans receivable	324,415	308,999
Single family
Ending allowance balance attributable to loans:
Individually evaluated for impairment	131	134
Collectively evaluated for impairment	397	463
Total ending allowance balance	528	597	1,164	1,174
Loans:
Loans individually evaluated for impairment	939	963
Loans collectively evaluated for impairment	123,726	130,632
Gross loans receivable	124,665	131,595
Multi-family
Ending allowance balance attributable to loans:
Individually evaluated for impairment	2	1
Collectively evaluated for impairment	1,864	1,657
Total ending allowance balance	1,866	1,658	2,741	2,726
Loans:
Loans individually evaluated for impairment	972	1,440
Loans collectively evaluated for impairment	142,995	118,186
Gross loans receivable	143,967	119,626
Commercial real estate
Ending allowance balance attributable to loans:
Individually evaluated for impairment	91	88
Collectively evaluated for impairment	353	381
Total ending allowance balance	444	469	436	496
Loans:
Loans individually evaluated for impairment	1,939	1,924
Loans collectively evaluated for impairment	9,141	9,488
Gross loans receivable	11,080	11,412
Church
Ending allowance balance attributable to loans:
Individually evaluated for impairment	570	756
Collectively evaluated for impairment	1,106	1,327
Total ending allowance balance	1,676	2,083	3,314	4,047
Loans:
Loans individually evaluated for impairment	10,995	11,390
Loans collectively evaluated for impairment	33,081	34,359
Gross loans receivable	44,076	45,749
Construction
Ending allowance balance attributable to loans:
Collectively evaluated for impairment	3	3
Total ending allowance balance	3	3	4	7
Loans:
Loans collectively evaluated for impairment	332	343
Gross loans receivable	332	343
Commercial - other
Ending allowance balance attributable to loans:
Individually evaluated for impairment	15	16
Collectively evaluated for impairment	2	2
Total ending allowance balance	17	18	11	12
Loans:
Loans individually evaluated for impairment	67	67
Loans collectively evaluated for impairment	222	203
Gross loans receivable	289	270
Consumer
Ending allowance balance attributable to loans:
Total ending allowance balance			$ 1	$ 3
Loans:
Loans collectively evaluated for impairment	6	4
Gross loans receivable	$ 6	$ 4

No definition available.

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- Definition

The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.

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- Definition

Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.

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The balance of financing receivables that were collectively evaluated for impairment.

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The balance of financing receivables that were individually evaluated for impairment.

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- Definition

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

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953423-111524

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953423-111524

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.7(d))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (b)(1)(ii)
-URI http://asc.fasb.org/extlink&oid=6379141&loc=d3e15032-111544

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 6
-Section L
-Subsection 1

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- Definition

Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=28367877&loc=d3e4428-111522

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