CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Statement of Comprehensive Income [Abstract]
Net income	$ 28,163	$ 10,792
Other comprehensive income/(loss), before tax:
Foreign currency translation adjustments	(11,514)	(37,722)
Employee benefit plan activity	1,116	901
Other comprehensive income/(loss)	(10,398)	(36,821)
Income tax expense related to items of other comprehensive income/(loss)	(232)	(185)
Other comprehensive income/(loss), net of tax	(10,630)	(37,006)
Comprehensive income	17,533	(26,214)
Less: Comprehensive income/(loss) attributable to noncontrolling interests	218	154
Comprehensive income attributable to Franklin Electric Co., Inc.	$ 17,315	$ (26,368)