Detailed Activity in Allowance for Loan Losses by Portfolio Segment (Detail) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	$ 8,077,499	$ 6,954,269
Provision for possible loan losses	361,368	174,509
Chargeoffs	119,340	338,013
Recoveries	42,045	43,810
Net Chargeoffs	77,295	294,203
Ending Balance	8,361,572	6,834,575
Loans individually evaluated for impairment	2,636,352	1,375,805
Loans collectively evaluated for impairment	5,725,220	5,458,770
Ending Balance	8,361,572	6,834,575
Real Estate Loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	4,705,753	4,629,559
Provision for possible loan losses	239,280	742,220
Chargeoffs	61,040	276,473
Recoveries	15,155	14,520
Net Chargeoffs	45,885	261,953
Ending Balance	4,899,148	5,109,826
Loans individually evaluated for impairment	1,075,733	1,321,099
Loans collectively evaluated for impairment	3,823,415	3,788,727
Ending Balance	4,899,148	5,109,826
Business Loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	2,767,409	1,554,698
Provision for possible loan losses	139,578	(537,313)
Chargeoffs	22,760	1,404
Recoveries	2,283	7,126
Net Chargeoffs	20,477	(5,722)
Ending Balance	2,886,510	1,023,107
Loans individually evaluated for impairment	1,560,619	54,706
Loans collectively evaluated for impairment	1,325,891	968,401
Ending Balance	2,886,510	1,023,107
Consumer Loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	604,337	770,012
Provision for possible loan losses	(17,490)	(30,398)
Chargeoffs	35,540	60,136
Recoveries	24,607	22,164
Net Chargeoffs	10,933	37,972
Ending Balance	575,914	701,642
Loans collectively evaluated for impairment	575,914	701,642
Ending Balance	$ 575,914	$ 701,642