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The Company and its Significant Accounting Policies (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2021 USD ($) segment shares	Dec. 31, 2020 USD ($)
The Company and its Significant Accounting Policies
Foreign currency transaction and translation losses	$ 40	$ 104
Number of reportable segments | segment	1
Period of warranty from date of shipment	1 year
Extended warranty minimum period	1 year
Stock-based compensation awards outstanding | shares	0
Cash to purchase of marketable securities	$ 1,900

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Amount before tax of foreign currency transaction realized and unrealized gain (loss) recognized in the income statement.

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Cash paid to purchase debt and equity securities, classified as operating activities, during the period; includes trading securities and any other investments classified as operating.

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Number of options outstanding, including both vested and non-vested options.

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