Capital Stock - Additional Information (Detail) - $ / shares	Dec. 31, 2015	Dec. 31, 2014
Equity [Abstract]
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	50,000,000	50,000,000
Common stock, shares issued	20,388,396	20,155,936
Common stock, shares outstanding	19,130,146	18,897,686
Preferred stock, shares authorized	10,000,000
Preferred stock, par value	$ 0.01
Preferred stock, shares outstanding	0