Related Party Transactions (Narrative) (Details) - USD ($) $ in Thousands		1 Months Ended		3 Months Ended	6 Months Ended
	Sep. 30, 2020	Oct. 31, 2020	Sep. 30, 2020	Sep. 30, 2020	Dec. 31, 2020	Jun. 30, 2021	Jun. 30, 2020	[1]
Related Party Transaction [Line Items]
Disgorgement proceeds recorded as an increase to additional paid-in capital					$ 98
Taxes payable					$ 984		$ 16,157
Value Capital Partners (Pty) Ltd [Member]
Related Party Transaction [Line Items]
Disgorgement proceeds recorded as an increase to additional paid-in capital				$ 100
Tax on capital contribution from shareholders			$ 20
Disgorgement proceeds received from related party	$ 120	$ 20
Value Capital Partners (Pty) Ltd [Member] | Forecast [Member]
Related Party Transaction [Line Items]
Taxes payable						$ 20

[1] Derived from audited financial statements.