Details of Certain Balance Sheet Accounts - Other Long-Term Obligations (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Details Of Certain Balance Sheet Accounts [Abstract]
Uncertain tax benefits accrued	$ 3,900,000	$ 400,000	$ 0
Deferred compensation plan liability	3,400,000	3,400,000
Other	1,200,000	900,000
Other long-term obligations	$ 8,511,000	$ 4,671,000