Fair Value - Carrying Amounts and Fair Values of Financial Instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Financial Assets:
Cash and cash equivalents	$ 35,991	$ 67,839
Securities available-for-sale, at fair value	15,209	14,140
Loans receivable held for investment	327,441	306,643
Accrued interest receivable	1,091	1,077
Federal Home Loan Bank stock	2,573	2,573
Financial Liabilities:
Deposits	252,816	265,495
Federal Home Loan Bank advances	73,728	73,441
Junior subordinated debentures	3,164	3,117
Accrued interest payable	54	52
Quoted Prices in Active Markets for Identical Assets (Level 1)
Financial Assets:
Cash and cash equivalents	35,991	67,839
Securities available-for-sale, at fair value	2,008	1,973
Accrued interest receivable	63	63
Federal Home Loan Bank stock	2,573	2,573
Significant Other Observable Unobservable Inputs (Level 2)
Financial Assets:
Securities available-for-sale, at fair value	13,201	12,167
Accrued interest receivable	34	31
Financial Liabilities:
Deposits	252,816	265,495
Federal Home Loan Bank advances	73,728	73,441
Accrued interest payable	48	46
Significant Unobservable Inputs (Level 3)
Financial Assets:
Loans receivable held for investment	327,441	306,643
Accrued interest receivable	994	983
Financial Liabilities:
Junior subordinated debentures	3,164	3,117
Accrued interest payable	6	6
Carrying Value
Financial Assets:
Cash and cash equivalents	35,991	67,839
Securities available-for-sale, at fair value	15,209	14,140
Loans receivable held for investment	319,881	304,171
Accrued interest receivable	1,091	1,077
Federal Home Loan Bank stock	2,573	2,573
Financial Liabilities:
Deposits	257,409	272,614
Federal Home Loan Bank advances	72,000	72,000
Junior subordinated debentures	5,100	5,100
Accrued interest payable	$ 54	$ 52