Contingent Consideration - Significant Inputs and Assumptions (Details)	Jun. 30, 2022 lease	Dec. 31, 2021 lease
Risk-free interest rate | DBOT
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Contingent consideration liability, measurement input	0.1	0.016
Risk-free interest rate | Solectrac
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Contingent consideration liability, measurement input	0.019
Expected volatility | DBOT
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Contingent consideration liability, measurement input	30	0.30
Expected volatility | Solectrac
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Contingent consideration liability, measurement input	0.250
Expected discount rate | Solectrac
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Contingent consideration liability, measurement input	0.187
Expected term (years) | DBOT
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Contingent consideration liability, measurement input	0.08	0.25
Expected dividend yield | DBOT
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Contingent consideration liability, measurement input	0	0
Weighted-average cost of capital | Tree Technologies
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Contingent consideration liability, measurement input	15.0	15.0
Probability | Tree Technologies | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Contingent consideration liability, measurement input	5	5
Probability | Tree Technologies | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Contingent consideration liability, measurement input	10	10