v2.4.0.6

Restructuring Restructuring (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2013
Restructuring [Abstract] |
Schedule of Restructuring and Related Costs [Table Text Block] | The total expected restructuring costs, the costs recognized in prior periods, the restructuring costs recognized during the three months ended March 31, 2013, and the remaining expected restructuring costs as of March 31, 2013 are as follows:
| Total Expected Costs at March 31, 2013 |  | Costs Recognized in Prior Periods |  | Costs Recognized During the Three Months Ended March 31, 2013 |  | Remaining Costs to be Recognized at March 31, 2013
| (in thousands)
Employee severance costs | $ | 47,658 |  |  | $ | 44,196 |  |  | $ | 84 |  |  | $ | 3,378 |
Asset impairments | 20,331 |  |  | 20,305 |  |  | 26 |  |  | — |
Other restructuring costs | 7,480 |  |  | 5,246 |  |  | 903 |  |  | 1,331 |
Total | $ | 75,469 |  |  | $ | 69,747 |  |  | $ | 1,013 |  |  | $ | 4,709 |
Segments: |  |  |  |  |  |  |
Energy | $ | 52,930 |  |  | $ | 53,190 |  |  | $ | (1,150 | ) |  | $ | 890 |
Water | 16,042 |  |  | 14,556 |  |  | 609 |  |  | 877 |
Corporate unallocated | 6,497 |  |  | 2,001 |  |  | 1,554 |  |  | 2,942 |
Total | $ | 75,469 |  |  | $ | 69,747 |  |  | $ | 1,013 |  |  | $ | 4,709 |
Schedule of Restructuring Reserve by Type of Cost [Table Text Block] | The following table summarizes the activity within the restructuring related balance sheet accounts during the three months ended March 31, 2013:
| Accrued Employee Severance |  | Asset Impairments & Net Loss on Sale or Disposal |  | Other Accrued Costs |  | Total
| (in thousands)
Beginning balance, January 1, 2013 | $ | 14,498 |  |  | $ | — |  |  | $ | 3,216 |  |  | $ | 17,714 |
Costs incurred and charged to expense | 84 |  |  | 26 |  |  | 903 |  |  | 1,013 |
Cash payments | (2,190 | ) |  | — |  |  | (432 | ) |  | (2,622 | )
Non-cash items | — |  |  | (26 | ) |  | — |  |  | (26 | )
Effect of change in exchange rates | (472 | ) |  | — |  |  | (8 | ) |  | (480 | )
Ending balance, March 31, 2013 | $ | 11,920 |  |  | $ | — |  |  | $ | 3,679 |  |  | $ | 15,599 |
Fair Value Measurements, Nonrecurring [Table Text Block] | The following table includes assets that were measured at fair value on a nonrecurring basis as of March 31, 2013 and December 31, 2012, and the related losses recognized during the period:
| Net Carrying Value |  | Fair Value Measurement (Level 3) |  | Total Loss Recognized in Period
| (in thousands)
March 31, 2013 |  |  |  |  |
Long-lived assets held for sale | $ | 3,064 |  |  | $ | 3,064 |  |  | $ | — |
December 31, 2012 |  |  |  |  |
Long-lived assets held for sale | $ | 3,184 |  |  | $ | 3,184 |  |  | $ | 2 |

X
- Details
Name: | itri_RestructuringAbstract
Namespace Prefix: | itri_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of assets and liabilities by class, including financial instruments measured at fair value that are classified in shareholders' equity, if any, that are measured at fair value on a nonrecurring basis in periods after initial recognition (for example, impaired assets). Disclosures may include, but are not limited to: (a) the fair value measurements recorded and the reasons for the measurements and (b) the level within the fair value hierarchy in which the fair value measurements are categorized in their entirety (levels 1, 2, 3). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 157 -Paragraph 33 -Subparagraph a, b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19296-110258 + Details
Name: | us-gaap_FairValueAssetsMeasuredOnNonrecurringBasisTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of restructuring and related costs by type of restructuring including the description of the restructuring costs, such as the expected cost; the costs incurred during the period; the cumulative costs incurred as of the balance sheet date; the income statement caption within which the restructuring charges recognized for the period are included; and changes to an entity's restructuring reserve that occurred during the period associated with the exit from or disposal of business activities or restructurings for each major type of cost. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 146 -Paragraph 20 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.P.4) -URI http://asc.fasb.org/extlink&oid=6394695&loc=d3e140904-122747 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 5.P.3) -URI http://asc.fasb.org/extlink&oid=6394695&loc=d3e140864-122747 + Details
Name: | us-gaap_ScheduleOfRestructuringAndRelatedCostsTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of an entity's restructuring reserve that occurred during the period associated with the exit from or disposal of business activities or restructurings for each major type of cost. This element may also include a description of any reversal and other adjustment made during the period to the amount of an accrued liability for restructuring activities. This element may be used to encapsulate the roll forward presentations of an entity's restructuring reserve by type of cost and in total, and explanation of changes that occurred in the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 5.P.4(b)(2)) -URI http://asc.fasb.org/extlink&oid=6394695&loc=d3e140904-122747 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 146 -Paragraph 20 -Subparagraph b(2) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
Name: | us-gaap_ScheduleOfRestructuringReserveByTypeOfCostTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration