XML 84 R102.htm IDEA: XBRL DOCUMENT
v3.19.3.a.u2

Defined Contribution, Bonus, and Profit Sharing Plans - Schedule of Bonus and Profit Sharing Plans Expense (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Defined Contribution, Bonus, and Profit Sharing [Abstract] |  |  |
Bonus and profit sharing plans expense | $ 48,435 | $ 15,466 | $ 40,005

X
- Definition Expense recognized in the period related to bonus and profit sharing plans and other awards for employee achievement. + References No definition available. + Details
Name: | itri_BonusAndProfitSharingPlansAndAwardsExpense
Namespace Prefix: | itri_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Defined Contribution, Bonus, and Profit Sharing [Abstract] + References No definition available. + Details
Name: | itri_DefinedContributionBonusAndProfitSharingAbstract
Namespace Prefix: | itri_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration