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Component of Property and Equipment (Detail) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2017 | Dec. 31, 2016
Property Plant And Equipment [Line Items] |  |
Manufacturing equipment | $ 12,104 | $ 10,086
Lab equipment | 6,686 | 6,280
Computer equipment | 4,760 | 4,010
Furniture and fixtures | 1,629 | 1,566
Leasehold improvements | 10,873 | 8,942
Assets in progress | 1,176 | 2,298
Property, Plant and Equipment, Gross | 37,228 | 33,182
Less accumulated depreciation and amortization | (20,609) | (16,008)
Total | $ 16,619 | $ 17,174
Manufacturing Equipment | Minimum |  |
Property Plant And Equipment [Line Items] |  |
Estimated Useful Lives (In years) | 5 years |
Manufacturing Equipment | Maximum |  |
Property Plant And Equipment [Line Items] |  |
Estimated Useful Lives (In years) | 14 years |
Lab Equipment | Minimum |  |
Property Plant And Equipment [Line Items] |  |
Estimated Useful Lives (In years) | 5 years |
Lab Equipment | Maximum |  |
Property Plant And Equipment [Line Items] |  |
Estimated Useful Lives (In years) | 13 years |
Computer Equipment |  |
Property Plant And Equipment [Line Items] |  |
Estimated Useful Lives (In years) | 3 years |
Furniture and Fixtures | Minimum |  |
Property Plant And Equipment [Line Items] |  |
Estimated Useful Lives (In years) | 3 years |
Furniture and Fixtures | Maximum |  |
Property Plant And Equipment [Line Items] |  |
Estimated Useful Lives (In years) | 13 years |
Leasehold Improvements | Minimum |  |
Property Plant And Equipment [Line Items] |  |
Estimated Useful Lives (In years) | 5 years |
Leasehold Improvements | Maximum |  |
Property Plant And Equipment [Line Items] |  |
Estimated Useful Lives (In years) | 8 years |

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- Definition Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.14) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Amount before accumulated depreciation of equipment commonly used in offices and stores that have no permanent connection to the structure of a building or utilities. Examples include, but are not limited to, desks, chairs, tables, and bookcases. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 + Details
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- Definition Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.13) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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