XML 91 R81.htm IDEA: XBRL DOCUMENT
v3.21.2

Commitments and Contingencies Warranty Expense (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020
Commitments and Contingencies Disclosure [Abstract] |  |  |  |
Total warranty expense | $ 950 | $ 2,428 | $ 4,242 | $ 8,321

X
- Definition Product Warranty Expense (Benefit) + References No definition available. + Details
Name: | itri_ProductWarrantyExpenseBenefit
Namespace Prefix: | itri_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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