Accumulated Other Comprehensive Income (Loss) - Accumulated Other Comprehensive Income Components (Detail) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Securities available for sale :
Net securities gains (losses) reclassified into earnings	$ 92	$ 14
Other-than-temporary losses reclassified into earnings	49,318
Related income tax expense (benefit)	(105,948)	(84,116)
Net effect on accumulated other comprehensive income (loss) for the period	446,256	381,337
Reclassification out of Accumulated Other Comprehensive Income [Member]
Securities available for sale :
Net effect on accumulated other comprehensive income (loss) for the period	31,000
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Net Unrealized Investment Gain (Loss) [Member]
Securities available for sale :
Net securities gains (losses) reclassified into earnings
Other-than-temporary losses reclassified into earnings	49,000
Related income tax expense (benefit)	(18,000)
Net effect on accumulated other comprehensive income (loss) for the period	$ 31,000