XML 65 R75.htm IDEA: XBRL DOCUMENT
v3.20.1

Commitments and Contingencies Warranty Expense (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2020 | Mar. 31, 2019
Commitments and Contingencies Disclosure [Abstract] |  |
Total warranty expense | $ 1,763 | $ 1,779

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