Capital Stock - Additional Information (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
Equity [Abstract]
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	50,000,000	50,000,000
Common stock, shares issued	19,855,430	19,513,476
Common stock, shares outstanding	18,597,180	18,255,226
Preferred stock, shares authorized	10,000,000
Preferred stock, par value	$ 0.01
Preferred stock, shares outstanding	0	0
Preferred stock, shares issued	0