Additional license fees, upon achievement of certain milestones.

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- Definition

Commitments and contingencies.

+ References

No definition available.

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- Definition

Lease agreement termination date.

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No definition available.

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- Definition

Lease commencement month and year.

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No definition available.

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- Definition

Lease expiration period.

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- Definition

Lessee leasing arrangements capital leases term of contract.

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- Definition

License agreements development milestones payment.

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No definition available.

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- Definition

Office space under capital lease.

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No definition available.

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- Definition

Office space under lease.

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No definition available.

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- Definition

Patent expiration period.

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No definition available.

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- Definition

Upfront licensing fee paid.

+ References

No definition available.

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- Definition

A general description of the lessee's leasing arrangements including, but not limited to, the following: a) the basis on which contingent rental payments are determined; (b) the existence and terms of renewal or purchase options and escalation clauses; (c) restrictions imposed by lease agreements, such as those concerning dividends, additional debt, and further leasing.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 440
-SubTopic 10
-Section 25
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6394851&loc=SL2265659-115463

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 10
-Section 15
-Paragraph 17
-URI http://asc.fasb.org/extlink&oid=51672649&loc=d3e32400-112679

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6452660&loc=d3e36991-112694

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- Definition

Number of entity's patents that another entity has allegedly infringed.

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No definition available.

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- Definition

Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
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- Definition

The minimum amount the entity agreed to spend under the long-term purchase commitment.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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Commitments and Contingencies - Additional Information (Detail) $ in Millions		1 Months Ended			12 Months Ended
	Aug. 12, 2016 ft²	Feb. 28, 2017 USD ($)	Dec. 31, 2015 USD ($)	Sep. 30, 2015 Patent	Mar. 31, 2017 USD ($)	Dec. 31, 2016 ft²	Apr. 30, 2014 USD ($)
Commitments and Contingencies [Line Items]
Purchase price of property amount			$ 16.5
License agreement, upfront payment							$ 1.5
License agreement, maximum agreed additional payments upon achievement of development milestones							$ 4.5
Magnetic Clutch Patents
Commitments and Contingencies [Line Items]
Patents allegedly infringed upon, number \| Patent				2
Pigtail Patents
Commitments and Contingencies [Line Items]
Patents allegedly infringed upon, number \| Patent				2
Patent One
Commitments and Contingencies [Line Items]
Patent expiration period					2020-09
Patent Two
Commitments and Contingencies [Line Items]
Patent expiration period					2020-12
Patent Three
Commitments and Contingencies [Line Items]
Patent expiration period					2021-10
Research and Development Expenses
Commitments and Contingencies [Line Items]
License agreement, development milestones payment					$ 0.8
Europe
Commitments and Contingencies [Line Items]
Purchase price of property amount		$ 12.6
Lease Agreements
Commitments and Contingencies [Line Items]
Office space under capital lease \| ft²	163,560
Lease agreement termination date	Aug. 31, 2026
Lease description					The Company has options to extend the initial term for three separate periods of five years each.
Capital lease term					15 years
Lease Agreements \| Massachusetts
Commitments and Contingencies [Line Items]
Annual rent expense					$ 0.2
Lease expiration period					2022-07
Lease Agreements \| Germany
Commitments and Contingencies [Line Items]
Annual rent expense					$ 0.3
Lease expiration period					2024-05
Lease commencement period					2017-05
Lease Agreements \| Japan
Commitments and Contingencies [Line Items]
Annual rent expense					$ 0.9
Lease Agreements \| Europe
Commitments and Contingencies [Line Items]
Office space under lease \| ft²						33,000