Carrying Amounts and Fair Values of Financial Instruments (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Financial Assets:
Cash and cash equivalents	$ 75,774	$ 64,360
Securities available-for-sale	12,180	13,378
Loans receivable held for sale	15,306	19,051
Loans receivable held for investment	234,852	252,043
Accrued interest receivable	1,176	1,250
Financial Liabilities:
Deposits	244,197	(253,155)
Federal Home Loan Bank advances	84,397	(84,769)
Junior subordinated debentures	(5,061)	(4,852)
Other borrowings	(4,353)	(4,205)
Accrued interest payable	(1,878)	(1,614)
Advance payments by borrowers for taxes and insurance	(332)	(711)
Fair Value, Inputs, Level 1
Financial Assets:
Cash and cash equivalents	75,774	64,360
Securities available-for-sale	0	0
Loans receivable held for sale	0	0
Loans receivable held for investment	0	0
Accrued interest receivable	0	0
Financial Liabilities:
Deposits	0	0
Federal Home Loan Bank advances	0	0
Junior subordinated debentures	0	0
Other borrowings	0	0
Accrued interest payable	0	0
Advance payments by borrowers for taxes and insurance	0	0
Fair Value, Inputs, Level 2
Financial Assets:
Cash and cash equivalents	0	0
Securities available-for-sale	12,180	13,378
Loans receivable held for sale	0	0
Loans receivable held for investment	0	0
Accrued interest receivable	59	42
Financial Liabilities:
Deposits	244,197	(253,155)
Federal Home Loan Bank advances	84,397	(84,769)
Junior subordinated debentures	0	0
Other borrowings	0	0
Accrued interest payable	(137)	(87)
Advance payments by borrowers for taxes and insurance	(332)	(711)
Fair Value, Inputs, Level 3
Financial Assets:
Cash and cash equivalents	0	0
Securities available-for-sale	0	0
Loans receivable held for sale	15,306	19,051
Loans receivable held for investment	234,852	252,043
Accrued interest receivable	1,117	1,208
Financial Liabilities:
Deposits	0	0
Federal Home Loan Bank advances	0	0
Junior subordinated debentures	(5,061)	(4,852)
Other borrowings	(4,353)	(4,205)
Accrued interest payable	(1,741)	(1,527)
Advance payments by borrowers for taxes and insurance	0	0
Carrying Value
Financial Assets:
Cash and cash equivalents	75,774	64,360
Securities available-for-sale	12,180	13,378
Loans receivable held for sale	15,306	19,051
Loans receivable held for investment	235,107	251,723
Federal Home Loan Bank stock	3,737	3,901
Accrued interest receivable	1,176	1,250
Financial Liabilities:
Deposits	(247,648)	(257,071)
Federal Home Loan Bank advances	(79,500)	(79,500)
Junior subordinated debentures	(6,000)	(6,000)
Other borrowings	(5,000)	(5,000)
Accrued interest payable	(2,171)	(1,941)
Advance payments by borrowers for taxes and insurance	$ (332)	$ (711)

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This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents Available-for-sale Securities which consist of all investments in certain debt and equity securities neither classified as trading or held-to-maturity securities. A debt security represents a creditor relationship with an enterprise. Debt securities include, among other items, US Treasury securities, US government securities, municipal securities, corporate bonds, convertible debt, commercial paper, and all securitized debt instruments. An equity security represents an ownership interest in an enterprise or the right to acquire or dispose of an ownership interest in an enterprise at fixed or determinable prices. Equity securities include, among other things, common stock, certain preferred stock, warrant rights, call options, and put options, but do not include convertible debt. An entity may opt to provide the reader with additional narrative text to better understand the nature of investments in debt and equity securities which are categorized as Available-for-sale.

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