XML 115 R97.htm IDEA: XBRL DOCUMENT v3.8.0.1

Segment and Geographic Information - Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	$ 747,950	$ 520,753	$ 450,557
Long-lived assets	80,539	56,311	55,894
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	179,914	136,611	119,781
Long-lived assets	53,983	40,404	40,742
Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	323,879	231,731	199,127
Long-lived assets	22,437	12,981	12,498
Greater China [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	103,406	63,471	54,137
Long-lived assets	1,594	994	873
Other [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	140,751	88,940	77,512
Long-lived assets	$ 2,525	$ 1,932	$ 1,781

X

- Definition

Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 41
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e9038-108599

+ Details

Name:	us-gaap_NoncurrentAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Aggregate revenue during the period from the sale of goods in the normal course of business, after deducting returns, allowances and discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1(a))
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

+ Details

Name:	us-gaap_SalesRevenueGoodsNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Details

Name:	us-gaap_StatementGeographicalAxis=country_US
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementGeographicalAxis=us-gaap_EuropeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementGeographicalAxis=cgnx_GreaterChinaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementGeographicalAxis=cgnx_OtherGeographicAreaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: