Annual report pursuant to Section 13 and 15(d)

Income Taxes - Schedule of Earnings (Loss) before Income Taxes and Income Tax Expense (Benefit) (Detail)

v3.6.0.2
Income Taxes - Schedule of Earnings (Loss) before Income Taxes and Income Tax Expense (Benefit) (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Schedule Of Allocation Of Income Tax Expense Benefit [Line Items]      
Earnings (loss) before income taxes $ 359,484 $ 333,497 $ 191,380
Income tax expense $ 74,125 $ 72,450 $ 39,184
Effective tax rate 20.60% 21.70% 20.50%
Domestic [Member]      
Schedule Of Allocation Of Income Tax Expense Benefit [Line Items]      
Earnings (loss) before income taxes $ 105,589 $ 136,726 $ 82,778
Income tax expense 44,654 52,173 32,500
Peoples Republic of China [Member]      
Schedule Of Allocation Of Income Tax Expense Benefit [Line Items]      
Earnings (loss) before income taxes 72,584 49,027 15,201
Income tax expense 11,720 11,084 1,179
Jersey [Member]      
Schedule Of Allocation Of Income Tax Expense Benefit [Line Items]      
Earnings (loss) before income taxes 146,880 123,721 77,555
Non-benefited loss operations [Member]      
Schedule Of Allocation Of Income Tax Expense Benefit [Line Items]      
Earnings (loss) before income taxes (16,189) (16,719) (13,021)
Income tax expense 12 164  
Other jurisdictions [Member]      
Schedule Of Allocation Of Income Tax Expense Benefit [Line Items]      
Earnings (loss) before income taxes 50,620 40,742 28,867
Income tax expense $ 17,739 $ 9,029 $ 5,505