Annual report pursuant to Section 13 and 15(d)

Income Taxes - Additional Information (Detail)

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Income Taxes - Additional Information (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Income Taxes Disclosure [Line Items]    
Net deferred tax assets $ 11,305 $ 13,103
Net tax receivable 1,653 1,265
Net deferred tax liabilities relating to non-controlling interests $ 30 31
Income tax settlement The amount recognized is measured as the largest amount of benefit that is greater than 50% likely of being realized upon ultimate settlement.  
Federal    
Income Taxes Disclosure [Line Items]    
Net tax receivable $ 949 939
State and Local Jurisdiction    
Income Taxes Disclosure [Line Items]    
Net tax receivable $ 704 $ 326