Revenue (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2022	Jun. 30, 2022
Disaggregation of Revenue [Line Items]
Consolidated revenue	$ 265	$ 709
Redemption Of Non-Cash Credits [Member]
Disaggregation of Revenue [Line Items]
Consolidated revenue	100	400
Cash Purchases [Member]
Disaggregation of Revenue [Line Items]
Consolidated revenue	$ 200	$ 300

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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+ Details