Stock-Based Compensation - Additional Information (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended			0 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	May 31, 2011	Apr. 30, 2014 Subsequent Event [Member]	Apr. 30, 2014 Non-Qualified Stock Options [Member] Subsequent Event [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized under Omnibus Incentive Plan			1,000,000
Stock options life, years					10 years
Stock options vesting period, years				3 years
Stock options granted to selected employees					172,000
Fair market value of fully vested shares as of the grant date	$ 25
Shares of common stock issued to non-employee directors				12,500
Stock-based compensation expense	351	296
Income tax benefit from stock-based compensation expense	$ 123	$ 104