Nature Of Business And Significant Accounting Policies (Narrative) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2024 USD ($) ShareBasedCompensationPlan Customer Number	Dec. 31, 2023 USD ($) Customer
Schedule of Significant Accounting Policies [Line Items]
Cash equivalents	$ 7,980	$ 7,926
Trade receivables, allowance for credit losses	11	11
Nonfinancial or financial items measured on a nonrecurring basis	0
Advertising expense	42	46
Research and development expense	1,013	973
Valuation allowance on deferred tax assets	$ 311	279
Number of company compensation plans | ShareBasedCompensationPlan	1
Other-than-temporary impairments recognized	$ 0	$ 0
Number Of Non-Publicly Traded Companies | Number	2
Number of banks has deposit accounts of the reporting entity | Number	2
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Aggregate customers of entity
Schedule of Significant Accounting Policies [Line Items]
Number of customers | Customer	0	0
Concentration risk percentage	10.00%	10.00%