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Fair Value Disclosures (Tables)
 12 Months Ended
Dec. 31, 2020
Fair Value Disclosures [Abstract]  
Fair value disclosures
    As of December 31, 2020
      Quoted Market Prices in Active Markets
(Level 1)		       Internal Models with Significant Observable
Market Parameters
(Level 2)		       Internal Models
with Significant Unobservable
Market Parameters
(Level 3)		       Total Fair Value
Reported in
Financial Statements		  
                                 
Mutual Funds   $ 1,228     $ —       $ —       $ 1,228  

 

    As of December 31, 2019
      Quoted Market Prices in Active Markets
(Level 1)		       Internal Models with Significant Observable
Market Parameters
(Level 2)		       Internal Models
with Significant Unobservable
Market Parameters
(Level 3)		      

Total Fair Value

Reported in

Financial Statements

  
                                 
Mutual Funds   $ 1,176     $ —       $ —       $ 1,176