Stock Incentive Plans - Summary of the Non-vested Options (Detail) (USD $)	3 Months Ended
	Mar. 31, 2014
Options
Options, Granted	12,000
Weighted-average exercise price
Weighted-average exercise price, Granted	$ 9.95
Weighted-average exercise price, Forfeited	$ 17.35
Non-vested options [Member]
Options
Options, Non-vested, Beginning balance	372,507
Options, Granted	12,000
Options, Vested	(22,125)
Options, Forfeited	(24,664)
Options, Non-vested, Ending balance	337,718
Weighted-average exercise price
Weighted-average exercise price, Beginning balance	$ 13.57
Weighted-average exercise price, Granted	$ 9.95
Weighted-average exercise price, Vested	$ 22.93
Weighted-average exercise price, Forfeited	$ 17.52
Weighted-average exercise price, Ending balance	$ 12.54