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Related Party Transactions - Narrative (Details)
¥ in Millions
3 Months Ended 12 Months Ended
Jan. 13, 2023
USD ($)
Dec. 28, 2022
CNY (¥)
Nov. 29, 2022
USD ($)
Nov. 29, 2022
CNY (¥)
Oct. 20, 2022
USD ($)
shares
Jun. 30, 2022
USD ($)
shares
Dec. 31, 2023
USD ($)
entity
shares
Dec. 31, 2022
USD ($)
shares
Aug. 31, 2023
USD ($)
Apr. 06, 2023
USD ($)
Mar. 19, 2023
USD ($)
Dec. 13, 2022
USD ($)
Nov. 09, 2022
USD ($)
Nov. 09, 2022
CNY (¥)
Jun. 07, 2022
USD ($)
Mar. 31, 2022
USD ($)
Feb. 09, 2022
Related Party Transaction [Line Items]                                  
Amount due from related parties             $ 0 $ 90,000                  
Principal amount             $ 18,923,000 $ 17,978,000                  
Option exercise (in shares) | shares             0 579                  
Repayments to third parties             $ 1,439,000 $ 128,000                  
Common stock issuance               $ 2,886,000                  
Disposal group, not discontinued operation, gain (loss) on disposal, statement of income or comprehensive income               Loss on disposal of subsidiaries, net                  
Seven Stars Energy Ptd. Ltd.                                  
Related Party Transaction [Line Items]                                  
Loss on disposal               $ 200,000                  
Percentage of ownership interest                                 51.00%
Shandong                                  
Related Party Transaction [Line Items]                                  
Ownership interest disposed (as percent)     80.00% 80.00%                          
Proceeds from disposal     $ 500,000 ¥ 2.7                          
Orangegrid Note Receivable                                  
Related Party Transaction [Line Items]                                  
Notes receivable provided | ¥   ¥ 0.4                              
Percent fee   15.00%                              
Orangegrid Note Receivable | Timios Holdings Corp                                  
Related Party Transaction [Line Items]                                  
Proceeds from convertible debt | ¥   ¥ 0.1                              
CRP Meccanica S.r.l., CRP Service S.r.l., CRP Technology S.r.l.                                  
Related Party Transaction [Line Items]                                  
Number of related party entities | entity             4                    
CRP Meccanica S.r.l., CRP Service S.r.l., CRP Technology S.r.l. | Energica                                  
Related Party Transaction [Line Items]                                  
Cost of revenue from related party             $ 100,000 600,000                  
Related Party                                  
Related Party Transaction [Line Items]                                  
Other current liabilities             1,419,000 1,927,000                  
Promissory note due             2,348,000 2,021,000                  
Related Party | Third Party Promissory Note                                  
Related Party Transaction [Line Items]                                  
Principal amount                             $ 1,000,000    
Interest rate (as percent)                             6.00%    
Transfer price               400,000                  
Impairment of promissory note               600,000                  
Related Party | Glory Connection                                  
Related Party Transaction [Line Items]                                  
Other current liabilities             200,000 200,000                  
Related Party | Tree Technologies                                  
Related Party Transaction [Line Items]                                  
Amount due from related parties               300,000                  
Related Party | Tree Technologies | Senior Convertible Note                                  
Related Party Transaction [Line Items]                                  
Principal amount             10,500,000                    
Related Party | Shandong                                  
Related Party Transaction [Line Items]                                  
Promissory note due                         $ 300,000 ¥ 2.2      
Management | Energica                                  
Related Party Transaction [Line Items]                                  
Amount due from related parties                               $ 1,800,000  
Option exercise (in shares) | shares           800,000                      
Options exercise           $ 1,300,000                      
Fair value of consideration transferred           $ 3,100,000                      
Management | CRP Meccanica S.r.l., CRP Service S.r.l., CRP Technology S.r.l.                                  
Related Party Transaction [Line Items]                                  
Other current liabilities             1,400,000 1,300,000                  
Immediate Family Member of Management or Principal Owner | March 2023 Promissory Note                                  
Related Party Transaction [Line Items]                                  
Principal amount                     $ 2,000,000            
Interest rate (as percent)                     20.00%            
Variable interest rate (as percent)                     2.00%            
Promissory note due             2,300,000                    
Immediate Family Member of Management or Principal Owner | December 2022 Promissory Note                                  
Related Party Transaction [Line Items]                                  
Principal amount                       $ 2,000,000          
Interest rate (as percent)                       20.00%          
Secured collateral                       $ 2,400,000          
Repayment of notes receivable from related party $ 100,000                                
Nonrelated Party                                  
Related Party Transaction [Line Items]                                  
Other current liabilities             13,181,000 9,287,000                  
Promissory note due             14,615,000 9,578,000                  
Nonrelated Party | Third Party Promissory Note                                  
Related Party Transaction [Line Items]                                  
Principal amount                   $ 1,000,000              
Interest rate (as percent)                   20.00%              
Variable interest rate (as percent)                   2.00%              
Promissory note due             1,100,000                    
Repayments to third parties             200,000                    
Chief Executive Officer                                  
Related Party Transaction [Line Items]                                  
Common stock issuance (in shares) | shares         400,000                        
Common stock issuance         $ 100,000                        
Chief Executive Officer | August 2023 Promissory Note                                  
Related Party Transaction [Line Items]                                  
Principal amount                 $ 50,000                
Interest rate (as percent)                 7.00%                
Minority Shareholder | Shandong                                  
Related Party Transaction [Line Items]                                  
Ownership interest disposed (as percent)     70.00% 70.00%                          
Proceeds from disposal     $ 400,000 ¥ 2.4                          
Third Party | Shandong                                  
Related Party Transaction [Line Items]                                  
Ownership interest disposed (as percent)     10.00% 10.00%                          
Proceeds from disposal     $ 100,000 ¥ 0.3                          
Loss on disposal               100,000                  
Borrowing from Dr. Wu. and his affiliates | Former Board Of Directors Chairman                                  
Related Party Transaction [Line Items]                                  
Amount due from related parties             200,000 200,000                  
Other current liabilities             $ 700,000 $ 700,000