Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Statement of Comprehensive Income [Abstract]
Net income	$ 13,580	$ 9,162
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	(15,012)	(25,445)
Net unrealized gain (loss) on derivative instruments, designated as cash flow hedges	2,528	(767)
Pension benefit obligation adjustment	701	1,001
Total other comprehensive income (loss), net of tax	(11,783)	(25,211)
Total comprehensive income (loss), net of tax	1,797	(16,049)
Comprehensive income attributable to noncontrolling interests, net of tax	977	478
Comprehensive income (loss) attributable to Itron, Inc.	$ 820	$ (16,527)