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Income Taxes - Narrative (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Income Tax Disclosure [Abstract]      
Effective tax rate 24.70% 24.10% 24.90%
Increase (decrease) in other deferred liability $ 22,600    
Net operating loss carryforwards 74,274 $ 71,724  
Operating Loss Carryforwards [Line Items]      
Valuation allowance, amount 61,089 57,790  
State Tax Net Operating Losses      
Operating Loss Carryforwards [Line Items]      
Valuation allowance, amount $ 51,600 $ 49,400  
Percent of deferred tax asset for which valuation allowance has been recognized 100.00% 100.00%  
Foreign Tax Net Operating Losses      
Operating Loss Carryforwards [Line Items]      
Valuation allowance, amount $ 9,500 $ 8,400  
Percent of deferred tax asset for which valuation allowance has been recognized 42.00% 38.00%