XML 62 R51.htm IDEA: XBRL DOCUMENT
v3.19.1

Revenue Recognition - Additional Information (Details) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2019 USD ($)
Revenue Recognition And Deferred Revenue [Abstract] |
Aggregate amount of transaction price allocated to material rights that remain unsatisfied | $ 1,383
Revenue expected to be recognized in next 9 months | 58.00%
Revenue expected to be recognized in 2020 | 21.00%
Revenue expected to be recognized in 2021 | 12.00%
Revenue expected to be recognized in 2022 | 5.00%
Revenue expected to be recognized in 2023 | 4.00%

X
- Definition Deferred revenue expected to be recognized in remainder of fiscal year. + References No definition available. + Details
Name: | thrm_DeferredRevenueExpectedToBeRecognizedRemainderOfFiscalYear
Namespace Prefix: | thrm_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Deferred revenue expected to be recognized in year five. + References No definition available. + Details
Name: | thrm_DeferredRevenueExpectedToBeRecognizedYearFive
Namespace Prefix: | thrm_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Deferred revenue expected to be recognized in year four. + References No definition available. + Details
Name: | thrm_DeferredRevenueExpectedToBeRecognizedYearFour
Namespace Prefix: | thrm_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Deferred revenue expected to be recognized in year three. + References No definition available. + Details
Name: | thrm_DeferredRevenueExpectedToBeRecognizedYearThree
Namespace Prefix: | thrm_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Deferred revenue expected to be recognized in year two. + References No definition available. + Details
Name: | thrm_DeferredRevenueExpectedToBeRecognizedYearTwo
Namespace Prefix: | thrm_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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

X
- Definition Amount of transaction price allocated to performance obligation that has not been recognized as revenue. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 13 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130556-203045 + Details
Name: | us-gaap_RevenueRemainingPerformanceObligation
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant