Consolidated Statements of Operations - USD ($) shares in Thousands	12 Months Ended
	Dec. 31, 2018		Dec. 31, 2017		Dec. 31, 2016
Total revenues	$ 2,376,117,000		$ 2,018,197,000		$ 2,013,186,000
Total cost of revenues	1,645,798,000		1,341,446,000		1,350,654,000
Gross profit	730,319,000		676,751,000		662,532,000
Operating expenses
Sales, general and administrative	423,210,000		325,264,000		319,571,000
Product development	207,905,000		169,407,000		167,766,000
Amortization of intangible assets	71,713,000		20,785,000		25,112,000
Restructuring	77,183,000		6,418,000		49,090,000
Total operating expenses	780,011,000		521,874,000		561,539,000
Operating income (loss)	(49,692,000)		154,877,000		100,993,000
Other income (expense)
Interest income	2,153,000		2,126,000		865,000
Interest expense	(58,203,000)		(13,845,000)		(13,521,000)
Other income (expense), net	(3,409,000)		(8,583,000)		(3,710,000)
Total other income (expense)	(59,459,000)		(20,302,000)		(16,366,000)
Income (loss) before income taxes	(109,151,000)		134,575,000		84,627,000
Income tax benefit (provision)	12,570,000		(74,326,000)		(49,574,000)
Net income (loss)	(96,581,000)		60,249,000		35,053,000
Net income attributable to noncontrolling interests	2,669,000		2,951,000		3,283,000
Net income (loss) attributable to Itron, Inc.	$ (99,250,000)		$ 57,298,000		$ 31,770,000
Earnings (loss) per common share - Basic (in dollars per share)	$ (2.53)	[1]	$ 1.48	[1]	$ 0.83
Earnings (loss) per common share - Diluted (in dollars per share)	$ (2.53)	[1]	$ 1.45	[1]	$ 0.82
Weighted average common shares outstanding - Basic (in shares)	39,244		38,655		38,207
Weighted average common shares outstanding - Diluted (in shares)	39,244		39,387		38,643
Product [Member]
Total revenues	$ 2,095,458,000		$ 1,813,925,000		$ 1,830,070,000
Total cost of revenues	1,476,498,000		1,204,127,000		1,236,977,000
Service [Member]
Total revenues	280,659,000		204,272,000		183,116,000
Total cost of revenues	$ 169,300,000		$ 137,319,000		$ 113,677,000

[1] The sum of the quarterly EPS data presented in the table may not equal the annual results due to rounding and the impact of dilutive securities on the annual versus the quarterly EPS calculations.