Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Net sales	$ 475,915	$ 470,353
Costs of goods sold	303,595	308,178
Gross profit	172,320	162,175
Operating expenses:
Selling and service	55,139	47,289
Research and development	18,649	13,609
General and administrative	27,889	24,762
Amortization of intangibles	7,781	5,342
Total operating expenses	109,458	91,002
Income from operations	62,862	71,173
Other (expense) income:
Interest expense	(9,053)	(10,272)
Investment income	960	914
Other, net	(1,914)	(1,061)
Total other expense, net	(10,007)	(10,419)
Income before provision for income taxes	52,855	60,754
Provision for income taxes	9,444	14,985
Net income	43,411	45,769
Net income attributable to noncontrolling interests	(1,049)	908
Net income attributable to Generac Holdings Inc.	$ 44,460	$ 44,861
Net income attributable to Generac Holdings Inc. per common share - basic: (in dollars per share)	$ 0.69	$ 0.77
Weighted average common shares outstanding - basic: (in shares)	62,126,481	61,762,260
Net income attributable to Generac Holdings Inc. per common share - diluted: (in dollars per share)	$ 0.68	$ 0.76
Weighted average common shares outstanding - diluted: (in shares)	63,283,737	62,223,638
Comprehensive income attributable to Generac Holdings Inc.	$ (3,098)	$ 39,527