Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 20,117	$ 3,773	$ 19,968	$ (141,497)
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	5,187	(34,160)	2,801	(17,860)
Net unrealized gain (loss) on derivative instruments, designated as cash flow hedges	(1,634)	486	(1,499)	1,655
Pension benefit obligation adjustment	183	401	654	815
Total other comprehensive income (loss), net of tax	3,736	(33,273)	1,956	(15,390)
Total comprehensive income (loss), net of tax	23,853	(29,500)	21,924	(156,887)
Comprehensive income (loss) attributable to noncontrolling interests, net of tax	671	1,116	2,429	1,512
Comprehensive income (loss) attributable to Itron, Inc.	$ 23,182	$ (30,616)	$ 19,495	$ (158,399)