Other Financial Statement Data (Schedule Of Inventories) (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Balance Sheet Related Disclosures [Abstract]
Raw materials and purchased parts	$ 19,802	$ 18,013
Work in process	1,763	1,655
Finished goods	6,684	6,859
Demonstration inventories, net	1,396	1,075
Total inventories	$ 29,645	$ 27,602

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Amount before valuation and LIFO reserves of completed merchandise or goods expected to be sold within one year or operating cycle, if longer.

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Amount before valuation and LIFO reserves of merchandise or goods in the production process expected to be completed within one year or operating cycle, if longer.

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