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v3.19.2

Leases - Operating Lease Arrangements (Details) $ in Thousands | 1 Months Ended |
--- | --- | ---
Mar. 31, 2018 USD ($) ft² item $ / ft² | Jan. 31, 2016 ft² | Dec. 31, 2018
CMO |  |  |
Lessee, Lease, Description [Line Items] |  |  |
Square of feet of space |  | 3,267 |
Term of lease extension option |  | 2 years |
Advance written notice termination period |  | 2 years |
Vehicle leases |  |  |
Lessee, Lease, Description [Line Items] |  |  |
Lease term |  |  | 12 months
Stoughton, Massachusetts |  |  |
Lessee, Lease, Description [Line Items] |  |  |
Rent-free term | 4 months |  |
Square of feet of space | 50,678 |  |
Lease term | 10 years |  |
Number of renewal periods | item | 2 |  |
Term of lease extension option | 5 years |  |
Base rent | $ | $ 1,214 |  |
Annual base rent per rentable square foot | $ / ft² | 23.95 |  |
Canton, Massachusetts |  |  |
Lessee, Lease, Description [Line Items] |  |  |
Square of feet of space | 9,660 |  |
Term of lease extension option | 5 years |  |
Maximum | Stoughton, Massachusetts |  |  |
Lessee, Lease, Description [Line Items] |  |  |
Increase in annual base rent | 3.10% |  |
Minimum | Stoughton, Massachusetts |  |  |
Lessee, Lease, Description [Line Items] |  |  |
Increase in annual base rent | 2.50% |  |

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- Definition Rent-free portion of the term of the lessee's leasing arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Cost of operating lease per rentable square foot. + References No definition available. + Details
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- Definition Term of lessee's operating lease renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918673-209980 + Details
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- Definition Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918673-209980 + Details
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