Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Revenues
Revenues	$ 519,574	$ 598,415
Cost of revenues
Cost of revenues	352,530	426,849
Gross profit	167,044	171,566
Operating expenses
Sales, general and administrative	75,992	80,498
Research and development	51,727	53,781
Amortization of intangible assets	8,973	11,165
Restructuring	(1,980)	(248)
Loss on sale of business	(1,392)	0
Total operating expenses	136,104	145,196
Operating income	30,940	26,370
Other income (expense)
Interest income	542	553
Interest expense	(10,475)	(11,277)
Other income (expense), net	(2,766)	1,066
Total other income (expense)	(12,699)	(9,658)
Income before income taxes	18,241	16,712
Income tax provision	(4,661)	(7,550)
Net income	13,580	9,162
Net income attributable to noncontrolling interests	977	478
Net income attributable to Itron, Inc.	$ 12,603	$ 8,684
Earnings (loss) per common share - Basic (in dollars per share)	$ 0.30	$ 0.22
Earnings (loss) per common share - Diluted (in dollars per share)	$ 0.30	$ 0.21
Weighted average common shares outstanding - Basic (in shares)	41,526	40,043
Weighted average common shares outstanding - Diluted (in shares)	41,964	40,474
Product [Member]
Revenues
Revenues	$ 442,804	$ 528,137
Cost of revenues
Cost of revenues	307,691	384,681
Service [Member]
Revenues
Revenues	76,770	70,278
Cost of revenues
Cost of revenues	$ 44,839	$ 42,168