Stock-Based Compensation Plans - Additional Information (Detail) (USD $)	1 Months Ended	12 Months Ended
	Feb. 21, 2013	Dec. 31, 2013	Dec. 31, 2012
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Stock-based compensation expense	$ 36,750	$ 122,429	$ 2,924
Additional options granted under plan		89,500
Expected life		5 years
Unrecognized compensation expenses related to stock options		$ 1.08
Historical dividend yield		3.60%
Expected stock price volatility		33.80%
Risk-free interest rate		0.86%
Stock price volatility, risk free interest period		5 years
Officers
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Additional options granted under plan	7,000
2003 Incentive Stock Option Plan
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Shares available for grant		385,000
Number of stock-based compensation plans			4
Number of stock-based compensation plans expired			2
Unrecognized compensation expense related to stock options		$ 0
2008 Non Employee Directors Stock Option Plan
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Additional options granted under plan		89,500	0
Options vested		89,500