Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Income Statement [Abstract]
Revenues	$ 477,592	$ 497,590
Cost of revenues	320,367	334,387
Gross profit	157,225	163,203
Operating expenses
Sales and marketing	41,468	40,767
Product development	40,868	45,346
General and administrative	37,246	45,069
Amortization of intangible assets	4,549	6,210
Restructuring	3,052	2,237
Total operating expenses	127,183	139,629
Operating income	30,042	23,574
Other income (expense)
Interest income	269	271
Interest expense	(2,674)	(2,918)
Other income (expense), net	(2,576)	(1,517)
Total other income (expense)	(4,981)	(4,164)
Income before income taxes	25,061	19,410
Income tax provision	(9,047)	(8,626)
Net income	16,014	10,784
Net income attributable to noncontrolling interests	169	695
Net income attributable to Itron, Inc.	$ 15,845	$ 10,089
Earnings per common share - Basic	$ 0.41	$ 0.27
Earnings per common share - Diluted	$ 0.40	$ 0.26
Weighted average common shares outstanding - Basic	38,474	38,059
Weighted average common shares outstanding - Diluted	39,215	38,376