Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Revenues	$ 571,640	$ 563,691
Cost of revenues	388,535	378,713
Gross profit	183,105	184,978
Operating expenses
Sales and marketing	49,856	44,478
Product development	44,356	40,142
General and administrative	36,570	34,672
Amortization of intangible assets	11,913	15,597
Restructuring expense	789	0
Total operating expenses	143,484	134,889
Operating Income (Loss)	39,621	50,089
Other income (expense)
Interest income	193	308
Interest expense	(2,437)	(12,114)
Other income (expense), net	(2,176)	(1,590)
Total other income (expense)	(4,420)	(13,396)
Income (Loss) Before Income Taxes	35,201	36,693
Income tax (provision) benefit	(9,629)	(9,567)
Net income	25,572	27,126
Net income attributable to noncontrolling interests	219	6
Net income (loss) attributable to Itron, Inc.	$ 25,353	$ 27,120
Earnings (loss) per common share-Basic	$ 0.64	$ 0.67
Earnings (loss) per common share-Diluted	$ 0.63	$ 0.66
Weighted average common shares outstanding-Basic	39,913	40,546
Weighted average common shares outstanding-Diluted	40,216	41,045