Annual report pursuant to Section 13 and 15(d)

Income Taxes - Additional Information (Detail)

v3.8.0.1
Income Taxes - Additional Information (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Income Taxes [Line Items]        
Corporate income tax rate percent   35.00%    
Net one-time non-cash provisional income tax benefit   $ 44,889    
Measurement period for analysis of changes in tax act   1 year    
Deemed reptriated foreign earnings   $ 352,632    
Net transition tax on deemed repatriated foreign earnings   14,512    
Undistributed foreign earnings     $ 251,439 $ 316,346
Valuation allowance against deferred assets – non-current   35,246 14,524  
Gross unrecognized tax benefits, including interest and penalties   20,232 18,190  
Unrecognized tax benefit that if recognized would impact effective tax rate   20,232 18,190  
Accrued for interest and penalties   $ 5,288 $ 4,111  
Foreign | Significant Portion of Tax Credit Carryforwards        
Income Taxes [Line Items]        
Tax credit carryforwards expiring year   2024    
State | Minimum        
Income Taxes [Line Items]        
Net operating losses carried forward expiring period   5 years    
State | Maximum        
Income Taxes [Line Items]        
Net operating losses carried forward expiring period   20 years    
Net operating losses carried forward expiring year   2037    
Scenario Forecast        
Income Taxes [Line Items]        
Corporate income tax rate percent 21.00%