Accounts Receivable (Schedule of Changes in Allowance for Credit Losses for Accounts Receivable) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2020 USD ($)
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Noncurrent receivables expected credit losses, beginning balance	$ 0
Charges	(71)
Currency translation	3
Other	0
Noncurrent receivables expected credit losses, ending balance	(274)
Cumulative Effect, Period of Adoption, Adjustment
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Noncurrent receivables expected credit losses, beginning balance	$ (206)