Accounts Receivable - Schedule of Changes in Low Yield Compensation Reserve (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Accounts, Notes, Loans and Financing Receivable [Line Items]
Ending balance	$ (1,951)	$ (3,206)	$ (1,511)
Low yield compensation reserve [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance	(3,206)	(1,511)	(2,134)
Addition to reserve	(1,868)	(3,074)	(841)
Payment made	3,150	1,519	1,468
Translation adjustments	(27)	(140)	(4)
Ending balance	$ (1,951)	$ (3,206)	$ (1,511)