XML 43 R81.htm IDEA: XBRL DOCUMENT
v3.19.3.a.u2

Segment and Geographic Information - Summary of Operations by Segment and Geographical Area (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Segment revenue: |  |  |  |  |  |  |  |  |  |  |
Revenue | $ 158,153 | $ 150,462 | $ 145,031 | $ 135,270 | $ 126,090 | $ 119,125 | $ 110,296 | $ 98,575 | $ 588,916 | $ 454,086 | $ 316,861
Segment income (loss) from operations: |  |  |  |  |  |  |  |  |  |  |
Total income from operations | $ 13,635 | $ 9,704 | $ 3,548 | $ 7,435 | $ 6,902 | $ 5,877 | $ 3,953 | $ 6,459 | 34,322 | 23,191 | 15,274
United States |  |  |  |  |  |  |  |  |  |  |
Segment revenue: |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 555,007 | 437,166 | 307,472
Segment income (loss) from operations: |  |  |  |  |  |  |  |  |  |  |
Total income from operations |  |  |  |  |  |  |  |  | 73,872 | 58,387 | 41,586
International |  |  |  |  |  |  |  |  |  |  |
Segment revenue: |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 33,909 | 16,920 | 9,389
Segment income (loss) from operations: |  |  |  |  |  |  |  |  |  |  |
Total income from operations |  |  |  |  |  |  |  |  | $ (39,550) | $ (35,196) | $ (26,312)

X
- Definition The net result for the period of deducting operating expenses from operating revenues. + References No definition available. + Details
Name: | us-gaap_OperatingIncomeLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130543-203045 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045 + Details
Name: | us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_SegmentReportingInformationOperatingIncomeLossAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_SegmentReportingInformationRevenueAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=carg_UnitedStatesSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=carg_InternationalSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |