Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 18,177	$ 19,787	$ 38,145	$ (121,710)
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	(13,902)	(678)	(11,101)	(18,538)
Net unrealized gain (loss) on derivative instruments, designated as cash flow hedges	695	908	(804)	2,563
Pension benefit obligation adjustment	502	392	1,156	1,207
Total other comprehensive income (loss), net of tax	(12,705)	622	(10,749)	(14,768)
Total comprehensive income (loss), net of tax	5,472	20,409	27,396	(136,478)
Comprehensive income (loss) attributable to noncontrolling interests, net of tax	1,330	(95)	3,759	1,417
Comprehensive income (loss) attributable to Itron, Inc.	$ 4,142	$ 20,504	$ 23,637	$ (137,895)