Investment Securities - Aggregate Amortized Cost and Market Values of Investment Securities Portfolio by Contractual Maturity (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
Schedule of Available-for-sale Securities [Line Items]
Due in one year or less, Amortized Cost	$ 5,882,454
Due after one year through five years, Amortized Cost	15,851,356
Due after five through ten years, Amortized Cost	15,416,075
Due after ten years, Amortized Cost	2,572,003
Amortized Cost	39,721,888	36,277,498
Due in one year or less, Fair Value	5,881,588
Due after one year through five years, Fair Value	15,785,063
Due after five through ten years, Fair Value	14,539,307
Due after ten years, Fair Value	2,316,038
Fair Value	$ 38,521,996	$ 36,700,520