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