Income Taxes (Effective Income Tax Rates Reconciliation) (Details)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Schedule Of Effective Income Tax Rates Reconciliation [Line Items]
Statutory tax rate	35.00%	35.00%	35.00%
State income taxes, net of federal benefit	1.00%	0.30%	(0.30%)
Tax impact of foreign subsidiaries	(2.60%)	(4.00%)	(6.90%)
Tax holiday	(23.50%)	(12.70%)	(15.20%)
Passive income exemption	(2.90%)	(3.20%)	(3.50%)
Acquisition contingent earnout liability adjustments	(0.60%)	(4.60%)	(5.00%)
Effective Income Tax Rate Reconciliation, Tax Credit, Research, Percent	(1.00%)	(1.10%)	(1.20%)
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Percent	0.80%	0.00%	0.00%
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Percent	(2.20%)	0.00%	0.00%
Effective Income Tax Rate Reconciliation, Prior Year True-ups, Percent	3.20%	(4.30%)	1.20%
Effective Income Tax Rate Reconciliation, Uncertain Tax Positions, Percent	0.10%	12.70%	9.70%
Effective Income Tax Rate Reconciliation, Other Adjustments, Percent	0.80%	(0.20%)	1.70%
Effective tax rate from ongoing operations	8.10%	17.90%	15.50%