Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Statement of Comprehensive Income [Abstract]
Net loss	$ (1,010)	$ (25,058)	$ (19,875)	$ (78,383)
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	(7,764)	13,988	(17,118)	(147)
Foreign currency translation adjustment reclassified to net income (loss) on sale of business	0	(14)	0	52,074
Net unrealized gain (loss) on derivative instruments, designated as cash flow hedges	510	(1)	1,818	(2,157)
Pension benefit obligation adjustment	687	(159)	2,087	889
Total other comprehensive income (loss), net of tax	(6,567)	13,814	(13,213)	50,659
Total comprehensive income (loss), net of tax	(7,577)	(11,244)	(33,088)	(27,724)
Comprehensive income attributable to noncontrolling interests, net of tax	859	299	2,514	1,092
Comprehensive income (loss) attributable to Itron, Inc.	$ (8,436)	$ (11,543)	$ (35,602)	$ (28,816)