Stock-Based Compensation and Stock Purchase Plans - Stock Appreciation Rights - Additional Information (Detail) (Stock Appreciation Rights (SARs) [Member], USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Schedule Of Share Based Compensation Arrangements [Line Items]
Option vesting period	3 years
Exercisable SARs		74,997	83,000
Weighted-average exercise price of SARs exercisable	$ 4.91	$ 4.60	$ 4.60
Granted, Shares	213,996	707,202	0
Number of options issued	250,000
Options issued, exercise price	$ 10.8
Consecutive trading days for options to vest	10 days
Percent of fair market value of Company's common stock on exercise date less exercise price of $10.80	100.00%
Intrinsic value	$ 0	$ 0.3	$ 0
Total fair value of awards vested	0.8	0.3	0.2
Unrecognized compensation cost	$ 1.2
Expected weighted average period of recognizing compensation cost	1 year 9 months 18 days
Minimum [Member]
Schedule Of Share Based Compensation Arrangements [Line Items]
Average closing price of common stock	$ 25