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Description of Business, Basis of Presentation, Corporate Transactions, Significant Accounting Policies, and Recent Accounting Pronouncements (Tables)
 12 Months Ended
Dec. 31, 2019
Accounting Policies [Abstract]  
Summary of Restricted Cash Balance The following table summarizes the restricted cash balance as of December 31, 2019 and 2018 (in thousands):
 December 31, 2019December 31, 2018
HUF funds$627  $9  
Certificate of deposits705  432  
Liability Deposit250  —  
 $1,582  $441