Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Statement of Comprehensive Income [Abstract]
Net loss	$ (149)	$ (145,270)
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	(2,386)	16,300
Net unrealized gain (loss) on derivative instruments, designated as cash flow hedges	135	1,169
Pension benefit obligation adjustment	471	414
Total other comprehensive income (loss), net of tax	(1,780)	17,883
Total comprehensive income (loss), net of tax	(1,929)	(127,387)
Comprehensive income attributable to noncontrolling interests, net of tax	1,758	396
Comprehensive income (loss) attributable to Itron, Inc.	$ (3,687)	$ (127,783)