Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Income Statement [Abstract]
Revenues	$ 503,082	$ 513,024	$ 980,674	$ 1,010,614
Cost of revenues	325,222	343,319	645,589	677,706
Gross profit	177,860	169,705	335,085	332,908
Operating expenses
Sales and marketing	44,753	39,376	86,221	80,143
Product development	43,111	43,354	83,979	88,700
General and administrative	43,161	45,328	80,407	90,397
Amortization of intangible assets	4,970	7,796	9,519	14,006
Restructuring	5,043	(1,622)	8,095	615
Total operating expenses	141,038	134,232	268,221	273,861
Operating income	36,822	35,473	66,864	59,047
Other income (expense)
Interest income	470	221	739	492
Interest expense	(2,876)	(2,735)	(5,550)	(5,653)
Other income (expense), net	(2,849)	(264)	(5,425)	(1,781)
Total other income (expense)	(5,255)	(2,778)	(10,236)	(6,942)
Income before income taxes	31,567	32,695	56,628	52,105
Income tax provision	(16,560)	(12,193)	(25,607)	(20,819)
Net income	15,007	20,502	31,021	31,286
Net income attributable to noncontrolling interests	910	585	1,079	1,280
Net income attributable to Itron, Inc.	$ 14,097	$ 19,917	$ 29,942	$ 30,006
Earnings per common share - Basic	$ 0.36	$ 0.52	$ 0.78	$ 0.79
Earnings per common share - Diluted	$ 0.36	$ 0.52	$ 0.76	$ 0.78
Weighted average common shares outstanding - Basic	38,683	38,236	38,579	38,147
Weighted average common shares outstanding - Diluted	39,332	38,516	39,274	38,446