v2.4.1.9

Segment Information Revenues By Region (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Dec. 31, 2013 | Sep. 30, 2013 | Jun. 30, 2013 | Mar. 31, 2013 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Revenues from External Customers [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total revenues | $ 510,095 us-gaap_SalesRevenueNet | $ 496,454 us-gaap_SalesRevenueNet | $ 489,353 us-gaap_SalesRevenueNet | $ 474,795 us-gaap_SalesRevenueNet | $ 523,526 us-gaap_SalesRevenueNet | $ 495,491 us-gaap_SalesRevenueNet | $ 482,175 us-gaap_SalesRevenueNet | $ 447,536 us-gaap_SalesRevenueNet | $ 1,970,697 us-gaap_SalesRevenueNet | $ 1,948,728 us-gaap_SalesRevenueNet | $ 2,178,178 us-gaap_SalesRevenueNet
United States and Canada [Member] |  |  |  |  |  |  |  |  |  |  |
Revenues from External Customers [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total revenues |  |  |  |  |  |  |  |  | 899,399 us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = itri_UnitedStatesAndCanadaMember | 851,295 us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = itri_UnitedStatesAndCanadaMember | 1,014,739 us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = itri_UnitedStatesAndCanadaMember
EMEA [Member] |  |  |  |  |  |  |  |  |  |  |
Revenues from External Customers [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total revenues |  |  |  |  |  |  |  |  | 848,502 us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = us-gaap_EMEAMember | 858,026 us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = us-gaap_EMEAMember | 878,615 us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = us-gaap_EMEAMember
Other Countries [Member] |  |  |  |  |  |  |  |  |  |  |
Revenues from External Customers [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total revenues |  |  |  |  |  |  |  |  | $ 222,796 us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = itri_OtherCountriesMember | $ 239,407 us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = itri_OtherCountriesMember | $ 284,824 us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = itri_OtherCountriesMember

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- Definition Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 + Details
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