XML 68 R57.htm IDEA: XBRL DOCUMENT v3.20.2
Income Taxes - Additional Information (Detail) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Dec. 31, 2019
Income Tax Disclosure [Line Items]          
Effective tax rate expense (benefit) 68.50% 17.30% 22.90% 6.20%  
Income tax benefit, result of CARES act of 2020     $ 7,400    
Effective tax rate reduction related to transfer pricing study   29.10%   29.10%  
Deferred tax assets, gross $ 59,767   59,767   $ 56,177
Valuation allowance established against deferred tax assets 52,194   52,194   48,616
Deferred tax assets 7,573   7,573   7,561
Domestic [Member]          
Income Tax Disclosure [Line Items]          
Valuation allowance established against deferred tax assets 3,600   3,600    
Deferred tax assets, gross 50,164   50,164   46,266
Valuation allowance established against deferred tax assets $ 50,164   $ 50,164   $ 46,266