Reconciliations Between Statutory Federal Income Tax Rate and Effective Rate (Detail)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Disclosure - Reconciliations Between Statutory Federal Income Tax Rate and Effective Rate (Detail) [Line Items]
Statutory Federal income tax rate	34.00%	34.00%	34.00%
Increase (Decrease) resulting from:
U.S. Taxes on foreign income, net of taxes paid credit	(1.70%)	4.50%
NOL’s recognized upon change in tax law		(2.90%)
Domestic and foreign state and local tax, net of federal benefit	3.60%	3.70%	7.20%
Nondeductible expenses	1.40%	1.60%	2.80%
Nondeductible acquisition transaction expenses			5.00%
Withholding taxes			1.70%
Nondeductible stock option compensation	(0.50%)		0.50%
Research and development credits	(2.30%)	(5.30%)	(6.90%)
Effect of different tax rates of foreign jurisdictions	(10.80%)	(10.50%)	(3.20%)
Nontaxable derivative gains			(5.20%)
Other tax exempt income		(0.50%)	(8.50%)
Other	0.30%	1.00%	2.00%
Effective rate	24.00%	25.60%	29.40%