Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Revenues
Revenues	$ 635,037	$ 585,890	$ 1,249,613	$ 1,193,111
Cost of revenues
Cost of revenues	443,823	409,313	871,136	836,679
Gross profit	191,214	176,577	378,477	356,432
Operating expenses
Sales, general and administrative	88,259	88,863	180,974	243,277
Research and development	49,449	54,775	99,939	115,059
Amortization of intangible assets	16,117	17,999	32,090	35,739
Restructuring	(6,169)	(5,623)	1,093	82,242
Total operating expenses	147,656	156,014	314,096	476,317
Operating income (loss)	43,558	20,563	64,381	(119,885)
Other income (expense)
Interest income	534	633	862	1,294
Interest expense	(13,496)	(14,645)	(27,031)	(30,149)
Other income (expense), net	(2,060)	1,003	(3,704)	(164)
Total other income (expense)	(15,022)	(13,009)	(29,873)	(29,019)
Income (loss) before income taxes	28,536	7,554	34,508	(148,904)
Income tax benefit (provision)	(8,419)	(3,781)	(14,540)	7,407
Net income (loss)	20,117	3,773	19,968	(141,497)
Net income attributable to noncontrolling interests	671	1,116	2,429	1,512
Net income (loss) attributable to Itron, Inc.	$ 19,446	$ 2,657	$ 17,539	$ (143,009)
Earnings (loss) per common share - Basic (in dollars per share)	$ 0.49	$ 0.07	$ 0.44	$ (3.66)
Earnings (loss) per common share - Diluted (in dollars per share)	$ 0.49	$ 0.07	$ 0.44	$ (3.66)
Weighted average common shares outstanding - Basic (in shares)	39,389	39,243	39,523	39,095
Weighted average common shares outstanding - Diluted (in shares)	39,686	39,789	39,875	39,095
Product [Member]
Revenues
Revenues	$ 566,047	$ 515,914	$ 1,110,897	$ 1,053,024
Cost of revenues
Cost of revenues	401,033	366,542	787,135	749,392
Service [Member]
Revenues
Revenues	68,990	69,976	138,716	140,087
Cost of revenues
Cost of revenues	$ 42,790	$ 42,771	$ 84,001	$ 87,287