Allowance for Loan Losses - Schedule of Impairment on Allowance for Loan Losses, by Class of Loans (Detail) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Allowance for Loan Losses:
Allowance for loan losses, Beginning balance	$ 1,864,788	$ 2,181,000
Charge-offs		(5,000)
Recoveries	1,000	2,000
Provision
Allowance for loan losses, Ending balance	1,865,783	2,178,000
Loans individually evaluated for impairment	197,000	596,000
Loans collectively evaluated for impairment	1,669,000	1,582,000
Commercial and Other Loans [Member]
Allowance for Loan Losses:
Allowance for loan losses, Beginning balance	260,000	179,000
Charge-offs
Provision	(5,000)
Allowance for loan losses, Ending balance	255,000	179,000
Loans individually evaluated for impairment	23,000	22,000
Loans collectively evaluated for impairment	232,000	157,000
Commercial Real Estate [Member]
Allowance for Loan Losses:
Allowance for loan losses, Beginning balance	1,315,000	1,762,000
Charge-offs
Provision
Allowance for loan losses, Ending balance	1,315,000	1,762,000
Loans individually evaluated for impairment	174,000	574,000
Loans collectively evaluated for impairment	1,141,000	1,188,000
Consumer Real Estate [Member]
Allowance for Loan Losses:
Allowance for loan losses, Beginning balance	263,000	193,000
Charge-offs
Provision	6,000
Allowance for loan losses, Ending balance	269,000	193,000
Loans collectively evaluated for impairment	269,000	193,000
Consumer Loans [Member]
Allowance for Loan Losses:
Allowance for loan losses, Beginning balance	27,000	47,000
Charge-offs		(5,000)
Recoveries	1,000	2,000
Provision	(1,000)
Allowance for loan losses, Ending balance	27,000	44,000
Loans collectively evaluated for impairment	$ 27,000	$ 44,000