Income Taxes (Details)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Reconciliation between the U.S. federal statutory tax rate and effective tax rate
Statutory rate	35.00%	35.00%
State taxes	1.20%	7.70%
Taxes on foreign earnings	(8.40%)	(9.90%)
Credits and net operating loss utilization	(1.30%)	(3.30%)
Purchased intangible assets	1.50%	1.10%
Manufacturing deduction	(2.00%)	(22.70%)
Permanent items	0.30%	5.50%
Other	0.50%	(0.20%)
Effective tax rate	26.80%	13.20%