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Stock Award Plans - Stock Based Compensation Expense Recognized in Accompanying Consolidated Statements of Operations by Category (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation	$ 6,511	$ 6,203
Cost of Goods Sold
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation	446	601
Research and development
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation	338	356
Selling, General and Administrative Expenses
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation	5,101	4,508
Cost of Revenue - Collaborations and Services
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation	$ 626	$ 738

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
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5047-113901

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
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-Section S99
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=115993241&loc=d3e301413-122809

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-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)(i)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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+ References

No definition available.

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