Income Taxes - Reconciliation of Income Tax Computed at Federal Statutory Rate to Income Before Taxes (Detail)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Effective Income Tax Rate Continuing Operations Tax Rate Reconciliation [Abstract]
U.S. Federal statutory rate	(34.00%)	(34.00%)	35.00%
State taxes net of federal benefit	(5.50%)	(8.90%)	5.20%
Permanent differences			(0.60%)
Foreign rate differential and transactional tax	(0.70%)	(3.80%)	(1.40%)
Impact of foreign tax holiday	(1.80%)	(10.40%)
Valuation allowance	26.90%		(5.90%)
Other	0.60%	1.10%	(2.00%)
Effective income tax rate	(14.50%)	(56.00%)	30.30%