Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Revenues
Revenues	$ 624,474	$ 595,962	$ 1,874,087	$ 1,789,073
Cost of revenues
Cost of revenues	428,070	398,865	1,299,206	1,235,544
Gross profit	196,404	197,097	574,881	553,529
Operating expenses
Sales, general and administrative	83,666	89,556	264,640	332,833
Research and development	50,612	47,239	150,551	162,298
Amortization of intangible assets	16,095	17,960	48,185	53,699
Restructuring	6,592	666	7,685	82,908
Total operating expenses	156,965	155,421	471,061	631,738
Operating income (loss)	39,439	41,676	103,820	(78,209)
Other income (expense)
Interest income	517	431	1,379	1,725
Interest expense	(12,868)	(14,171)	(39,899)	(44,320)
Other income (expense), net	(2,759)	(2,434)	(6,463)	(2,598)
Total other income (expense)	(15,110)	(16,174)	(44,983)	(45,193)
Income (loss) before income taxes	24,329	25,502	58,837	(123,402)
Income tax benefit (provision)	(6,152)	(5,715)	(20,692)	1,692
Net income (loss)	18,177	19,787	38,145	(121,710)
Net income (loss) attributable to noncontrolling interests	1,330	(95)	3,759	1,417
Net income (loss) attributable to Itron, Inc.	$ 16,847	$ 19,882	$ 34,386	$ (123,127)
Earnings (loss) per common share - Basic (in dollars per share)	$ 0.43	$ 0.51	$ 0.87	$ (3.14)
Earnings (loss) per common share - Diluted (in dollars per share)	$ 0.42	$ 0.50	$ 0.86	$ (3.14)
Weighted average common shares outstanding - Basic (in shares)	39,478	39,340	39,508	39,177
Weighted average common shares outstanding - Diluted (in shares)	39,903	39,909	39,884	39,177
Product [Member]
Revenues
Revenues	$ 552,897	$ 525,716	$ 1,663,794	$ 1,578,740
Cost of revenues
Cost of revenues	389,778	357,194	1,176,913	1,106,586
Service [Member]
Revenues
Revenues	71,577	70,246	210,293	210,333
Cost of revenues
Cost of revenues	$ 38,292	$ 41,671	$ 122,293	$ 128,958