Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Statement of Comprehensive Income [Abstract]
Net income	$ 16,014	$ 10,784
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustment	15,016	10,106
Net unrealized gain (loss) on derivative instruments, designated as cash flow hedges	292	(2,606)
Pension benefit obligation adjustment	401	(318)
Total other comprehensive income (loss), net of tax	15,709	7,182
Total comprehensive income, net of tax	31,723	17,966
Comprehensive income attributable to noncontrolling interests, net of tax	169	695
Comprehensive income attributable to Itron, Inc.	$ 31,554	$ 17,271