Quarterly report pursuant to Section 13 or 15(d)

Organization and Accounting Policies (Assets and Liabilities Measured on Recurring Basis) (Details)

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Organization and Accounting Policies (Assets and Liabilities Measured on Recurring Basis) (Details) - USD ($)
$ in Thousands
Mar. 31, 2021
Dec. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
SARs liability $ 2,792 $ 2,289
Derivative liability 4,244  
Contingent payment 5,000  
SARs liability 73 193
Liabilities 12,109 2,482
Level 2 [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
SARs liability 2,792 2,289
Derivative liability 4,244  
Contingent payment 5,000  
SARs liability 73 193
Liabilities $ 12,109 $ 2,482