Stock-Based Compensation and Stock Purchase Plans - SAR Award Transactions under Stock-Based Employee Compensation Plans (Detail) (Stock Appreciation Rights (SARs) [Member], USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Stock Appreciation Rights (SARs) [Member]
SAR award transactions under stock-based employee compensation plans
Unvested Outstanding, shares, beginning balance	932,202
Granted, Shares	213,996	707,202	0
Exercised, Shares	0
Cancelled, Shares	(19,000)
Unvested Outstanding, shares, ending balance	1,127,198	932,202
SARs exercisable at end of the year, shares	394,394
Weighted-Average Exercise Price, beginning balance	$ 4.99
Weighted-Average Exercise Price, Granted	$ 4.80
Weighted-Average Exercise Price, Exercised
Weighted-Average Exercise Price, Cancelled	$ (5.12)
Weighted-Average Exercise Price, ending balance	$ 4.95	$ 4.99
SARs exercisable at end of the year, Weighted Average Exercise Price	$ 4.91	$ 4.60	$ 4.60
SARs outstanding as of December 31, 2013	3 years 3 months 4 days
SARs exercisable as of December 31, 2013	2 years 10 months 2 days
SARs outstanding, Aggregate Intrinsic Value	$ 0
SARs exercisable at end of the year, Aggregate Intrinsic Value	$ 0