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Revenue Sources and Concentration of Sales (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Revenues	$ 203,050	$ 108,447
Accounts Receivable, Net, Current	9,571	9,421
Sales Revenue, Net [Member] | Customer Concentration Risk [Member] | Customers Outside of US [Member]
Revenues	$ 0	$ 1,350
Sales Revenue, Net [Member] | Customer Concentration Risk [Member] | Largest Customer [Member]
Concentration Risk, Percentage	46.00%	44.00%
Sales Revenue, Net [Member] | Customer Concentration Risk [Member] | Second Largest Customer [Member]
Concentration Risk, Percentage	12.00%	21.00%
Sales Revenue, Net [Member] | Customer Concentration Risk [Member] | Third Largest Customer [Member]
Concentration Risk, Percentage	8.00%	12.00%
Accounts Receivable [Member] | Customer Concentration Risk [Member]
Accounts Receivable, Net, Current		$ 9,421
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Largest Customer [Member]
Accounts Receivable, Net, Current	$ 9,571
Concentration Risk, Percentage	62.00%	48.00%
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Second Largest Customer [Member]
Concentration Risk, Percentage		28.00%

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Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current.

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