CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Income Statement [Abstract]
Net sales	$ 351,190	$ 348,416	$ 926,225	$ 994,471
Cost of sales	226,893	230,793	604,489	667,624
Gross profit	124,297	117,623	321,736	326,847
Selling, general, and administrative expenses	75,472	74,500	223,409	226,581
Restructuring expense	441	404	2,189	1,735
Operating income	48,384	42,719	96,138	98,531
Interest expense	(1,130)	(2,037)	(3,496)	(6,674)
Other income/(expense), net	(463)	(250)	(1,062)	(303)
Foreign exchange income/(expense)	(140)	2,082	(84)	2,166
Income before income taxes	46,651	42,514	91,496	93,720
Income tax expense	8,076	8,439	17,327	17,706
Net income	38,575	34,075	74,169	76,014
Less: Net (income)/expense attributable to noncontrolling interests	(203)	(168)	(503)	(306)
Net income attributable to Franklin Electric Co., Inc.	$ 38,372	$ 33,907	$ 73,666	$ 75,708
Income per share:
Basic	$ 0.82	$ 0.73	$ 1.58	$ 1.62
Diluted	$ 0.82	$ 0.72	$ 1.57	$ 1.61