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Stockholder's Equity Schedule of Stock Based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based payment	$ 742	$ 1,033	$ 1,547	$ 1,907
Cost of product sales
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based payment	34	61	74	102
Research and development
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based payment	137	196	290	368
Sales, marketing and support
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based payment	139	212	293	394
General and administrative
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based payment	$ 432	$ 564	$ 890	$ 1,043

X

- Definition

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5047-113901

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