Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Net sales	$ 998,197	$ 1,000,420	$ 1,887,470	$ 1,888,330
Costs of goods sold	622,636	671,999	1,195,530	1,287,410
Gross profit	375,561	328,421	691,940	600,920
Operating expenses:
Selling and service	128,153	115,743	236,739	216,431
Research and development	53,996	43,942	103,406	85,762
General and administrative	65,386	56,371	132,150	116,056
Amortization of intangibles	24,791	26,393	49,541	52,216
Total operating expenses	272,326	242,449	521,836	470,465
Income from operations	103,235	85,972	170,104	130,455
Other (expense) income:
Interest expense	(23,318)	(25,160)	(46,923)	(48,155)
Investment income	1,841	941	3,529	1,629
Change in fair value of investment	(2,117)	0	(8,136)	0
Other, net	(950)	(331)	(1,372)	(497)
Total other expense, net	(24,544)	(24,550)	(52,902)	(47,023)
Income before provision for income taxes	78,691	61,422	117,202	83,432
Provision for income taxes	19,638	15,907	31,671	23,756
Net income	59,053	45,515	85,531	59,676
Net income (loss) attributable to noncontrolling interests	(62)	317	184	2,048
Net income attributable to Generac Holdings Inc.	$ 59,115	$ 45,198	$ 85,347	$ 57,628
Net income attributable to Generac Holdings Inc. per common share - basic: (in dollars per share)	$ 0.99	$ 0.7	$ 1.38	$ 0.76
Weighted average common shares outstanding - basic: (in shares)	59,880,336	61,721,614	59,854,131	61,645,341
Net income attributable to Generac Holdings Inc. per common share - diluted: (in dollars per share)	$ 0.97	$ 0.7	$ 1.36	$ 0.75
Weighted average common shares outstanding - diluted: (in shares)	60,641,740	62,348,184	60,559,904	62,429,911
Comprehensive income attributable to Generac Holdings Inc.	$ 34,397	$ 69,060	$ 56,961	$ 104,422