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Preferred Stock - Additional Information (Detail) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2023
Apr. 11, 2018
Jun. 30, 2023
Jun. 30, 2023
Jun. 30, 2022
May 10, 2023
Dec. 31, 2022
Class of Stock [Line Items]              
Fair value of preferred stock consideration   $ 132,750          
Percentage of outstanding common stock 4.99%            
Shares issued in connection with settlement of the deferred consideration     $ 45 $ 45      
Preferred stock issuance costs       97 $ 0    
Additional paid in capital [Member]              
Class of Stock [Line Items]              
Shares issued in connection with settlement of the deferred consideration       $ 86,801      
Preferred stock issuance costs $ 97            
Series C Preferred Stock [Member]              
Class of Stock [Line Items]              
Common stock equivalents 0   0 0      
Series C Redeemable Convertible Preferred Stock [Member]              
Class of Stock [Line Items]              
Preferred stock, shares issued 13,087.000   13,087.000 13,087.000   13,087 13,087.000
Series C Redeemable Convertible Preferred Stock [Member] | SPA Agreement [Member]              
Class of Stock [Line Items]              
Common stock equivalents 13,087,000   13,087,000 13,087,000      
Fair value of preferred stock consideration $ 86,898   $ 86,898 $ 86,898      
Preferred stock, shares issued 13,087,000   13,087,000 13,087,000      
Share Price $ 6.64   $ 6.64 $ 6.64      
Series A Preferred Stock [Member]              
Class of Stock [Line Items]              
Other redemption rights unrelated to stockholder approval       Temporary equity classification is required for redeemable instruments for which redemption triggers are outside of the issuer’s control. ETFS Capital has the right to redeem all the Series A Preferred Stock specified to be converted during the period of time specified in the Series A Certificate of Designations in the event that: (a) the number of shares of the Company’s common stock authorized by its certificate of incorporation is insufficient to permit the Company to convert all of the Series A Preferred Stock requested by ETFS Capital to be converted; or (b) ETFS Capital does not, upon completion of a change of control of the Company, receive the same amount per Series A Preferred Stock as it would have received had each outstanding Series A Preferred Stock been converted into common stock immediately prior to the change of control. However, the Company will not be obligated to make any such redemption payments to the extent such payments would be a breach of any covenant or obligation the Company owes to any of its secured creditors or is otherwise prohibited by applicable law.      
Preferred stock redemption value $ 103,480   $ 103,480 $ 103,480     $ 77,969
Acquisition of ETFS Business [Member] | Preferred Stock [Member] | Series A Preferred Stock [Member]              
Class of Stock [Line Items]              
Shares issued in business acquisition   14,750          
Acquisition of ETFS Business [Member] | Common Stock [Member]              
Class of Stock [Line Items]              
Common stock equivalents   14,750,000          
Series of Individually Immaterial Business Acquisitions [Member]              
Class of Stock [Line Items]              
Acquisition price per share   $ 9