Income Taxes - Provision (Benefit) for Income Taxes (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Current
Federal
State	600,000	600,000	400,000
Foreign	200,000	300,000	600,000
Gross	800,000	900,000	1,000,000
Deferred
Federal	(121,600,000)	4,800,000	4,400,000
State	(13,300,000)	400,000	400,000
Gross	(134,900,000)	5,200,000	4,800,000
Total provision (benefit) for taxes	$ (134,137,000)	$ 6,112,000	$ 5,790,000