Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (56,877)	$ 52,415	$ (96,581)
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	21,082	(2,953)	(28,841)
Foreign currency translation adjustment reclassified to net income on sale of business	52,074	2,443	0
Net unrealized gain (loss) on derivative instruments, designated as cash flow hedges	(898)	(1,924)	235
Pension benefit obligation adjustment	6,112	5,933	(2,779)
Total other comprehensive income (loss), net of tax	66,146	(8,367)	(25,827)
Total comprehensive income (loss), net of tax	9,269	44,048	(122,408)
Comprehensive income attributable to noncontrolling interests, net of tax	1,078	3,409	2,669
Comprehensive income (loss) attributable to Itron, Inc.	$ 8,191	$ 40,639	$ (125,077)