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Income Taxes - Summary of Supplemental Balance Sheet Information Related to Deferred Tax Assets (Detail) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Operating Loss Carryforwards [Line Items]    
Deferred Tax Assets $ 56,177  
Valuation Allowance (48,616)  
Net Deferred Tax Assets 7,561 $ 37,187
Domestic [Member]    
Operating Loss Carryforwards [Line Items]    
Deferred Tax Assets 46,266  
Valuation Allowance (46,266)  
International [Member]    
Operating Loss Carryforwards [Line Items]    
Deferred Tax Assets 9,911  
Valuation Allowance (2,350)  
Net Deferred Tax Assets $ 7,561