Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Statement of Comprehensive Income [Abstract]
Net income	$ 15,007	$ 20,502	$ 31,021	$ 31,286
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustment	20,447	(8,380)	35,463	1,726
Net unrealized gain (loss) on derivative instruments, designated as cash flow hedges	(231)	(1,126)	61	(3,732)
Pension benefit obligation adjustment	193	(291)	594	(609)
Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, Net of Tax	193	(291)	594	(609)
Total other comprehensive income (loss), net of tax	20,409	(9,797)	36,118	(2,615)
Total comprehensive income, net of tax	35,416	10,705	67,139	28,671
Comprehensive income attributable to noncontrolling interests, net of tax	910	585	1,079	1,280
Comprehensive income attributable to Itron, Inc.	$ 34,506	$ 10,120	$ 66,060	$ 27,391