Allowance for Doubtful Accounts (Activity in Allowance for Doubtful Accounts) (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Reversal of provision for doubtful accounts	$ (4)	$ (1)
Allowance For Doubtful Accounts [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning Balance	4	5
Reversal of provision for doubtful accounts	$ (4)	(1)
Ending Balance		$ 4