Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements (Narrative) (Details)

v3.21.2
Fair Value Measurements (Narrative) (Details)
6 Months Ended
Jun. 30, 2021
Discount rate [Member]  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Discount rate 21.00%
Whinstone US, LLC [Member] | Discount rate [Member]  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Discount rate 21.00%
Whinstone US, LLC [Member] | Standard & Poor's [Member]  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Discount rate 2.50%