Amount of accumulated undistributed earnings (deficit).

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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+ Details

Overview and Basis of Presentation (Details Narrative) - USD ($) $ in Thousands	Oct. 31, 2013	Jun. 30, 2023	Dec. 31, 2022
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Accumulated deficit		$ 88,515	$ 83,011
Short-term investments on hand		$ 4,700
Harvard Bioscience Plan [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Proceeds from contributions	$ 15,000