Significant Market Segments And Customers (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022
Significant market segments
Accounts receivable	$ 10,901	$ 6,259
Sales \| International sales \| Rest of World
Significant market segments
Direct sales percentage of sales	9.00%	9.00%
Sales \| DaVita \| Customer concentration
Significant market segments
Direct sales percentage of sales	47.00%	46.00%
Sales \| Baxter \| Customer concentration
Significant market segments
Direct sales percentage of sales	0.00%	29.00%
Accounts receivable \| DaVita
Significant market segments
Accounts receivable	$ 2,100	$ 1,900
Accounts receivable \| Baxter
Significant market segments
Accounts receivable	$ 0	$ 2,300

Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current.

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