Loans and Allowance for Loan Losses - Loans Individually Evaluated for Impairment by Class of Loans (Detail) (USD $)	3 Months Ended	12 Months Ended
	Mar. 31, 2014	Dec. 31, 2013
Financing Receivable, Allowance for Credit Losses [Line Items]
Without a valuation allowance	$ 4,375,785	$ 4,005,212
With a valuation allowance	4,672,717	6,310,835
Recorded investment in impaired loans	9,048,502	10,316,047
Unpaid principal balance of impaired loans	10,417,949	11,703,940
Valuation allowance related to impaired loans	910,366	1,090,060
Average investment in impaired loans	9,517,648	13,614,384
Interest income recognized on impaired loans	91,928	537,410
Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Without a valuation allowance	47,141	47,141
With a valuation allowance	1,841,634	1,854,068
Recorded investment in impaired loans	1,888,775	1,901,209
Unpaid principal balance of impaired loans	1,928,622	1,941,056
Valuation allowance related to impaired loans	77,948	86,958
Average investment in impaired loans	1,893,901	1,878,458
Interest income recognized on impaired loans	24,832	101,112
Residential 1-4 Family [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Without a valuation allowance	3,279,634	3,285,685
With a valuation allowance	1,013,937	2,535,890
Recorded investment in impaired loans	4,293,571	5,821,575
Unpaid principal balance of impaired loans	4,685,598	6,232,048
Valuation allowance related to impaired loans	178,949	545,126
Average investment in impaired loans	4,970,480	8,658,167
Interest income recognized on impaired loans	41,407	353,260
Commercial Real Estate and Multi-Family [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Without a valuation allowance	243,965	247,422
With a valuation allowance	440,024	202,175
Recorded investment in impaired loans	683,989	449,597
Unpaid principal balance of impaired loans	683,989	449,597
Valuation allowance related to impaired loans	323,023	85,175
Average investment in impaired loans	526,466	880,839
Interest income recognized on impaired loans	6,320	55,697
Construction and Land [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Without a valuation allowance	659,691	346,571
With a valuation allowance	1,122,909	1,468,722
Recorded investment in impaired loans	1,782,600	1,815,293
Unpaid principal balance of impaired loans	2,719,703	2,752,396
Valuation allowance related to impaired loans	255,311	303,752
Average investment in impaired loans	1,792,634	1,869,016
Interest income recognized on impaired loans	15,348	7,275
Consumer and Other [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Without a valuation allowance	145,354	78,393
With a valuation allowance	254,213	249,980
Recorded investment in impaired loans	399,567	328,373
Unpaid principal balance of impaired loans	400,037	328,843
Valuation allowance related to impaired loans	75,135	69,049
Average investment in impaired loans	334,167	327,904
Interest income recognized on impaired loans	$ 4,021	$ 20,066