Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Net sales	$ 1,173,563	$ 1,070,667	$ 3,061,033	$ 2,958,997
Costs of goods sold	701,294	694,880	1,896,824	1,982,290
Gross profit	472,269	375,787	1,164,209	976,707
Operating expenses:
Selling and service	145,310	117,929	382,049	334,360
Research and development	56,936	43,312	160,342	129,074
General and administrative	77,242	83,052	209,392	199,108
Amortization of intangibles	24,157	26,718	73,698	78,934
Total operating expenses	303,645	271,011	825,481	741,476
Income from operations	168,624	104,776	338,728	235,231
Other (expense) income:
Interest expense	(22,910)	(24,707)	(69,833)	(72,862)
Investment income	1,757	1,160	5,286	2,789
Change in fair value of investment	5,198	0	(2,938)	0
Loss on extinguishment of debt	(4,861)	0	(4,861)	0
Other, net	(577)	(1,167)	(1,949)	(1,664)
Total other expense, net	(21,393)	(24,714)	(74,295)	(71,737)
Income before provision for income taxes	147,231	80,062	264,433	163,494
Provision for income taxes	33,453	19,428	65,124	43,184
Net income	113,778	60,634	199,309	120,310
Net income attributable to noncontrolling interests	36	257	220	2,305
Net income attributable to Generac Holdings Inc.	$ 113,742	$ 60,377	$ 199,089	$ 118,005
Net income attributable to Generac Holdings Inc. per common share - basic: (in dollars per share)	$ 1.91	$ 0.98	$ 3.29	$ 1.74
Weighted average common shares outstanding - basic: (in shares)	59,493,640	61,368,440	59,720,597	61,552,949
Net income attributable to Generac Holdings Inc. per common share - diluted: (in dollars per share)	$ 1.89	$ 0.97	$ 3.25	$ 1.72
Weighted average common shares outstanding - diluted: (in shares)	60,312,393	62,091,163	60,475,478	62,362,743
Comprehensive income attributable to Generac Holdings Inc.	$ 129,284	$ 37,041	$ 186,245	$ 141,463