CONDENSED CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED) - USD ($)	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Income Statement [Abstract]
Net sales	$ 105,413,000	$ 75,673,000
Cost of goods sold	71,124,000	54,047,000
Gross profit	34,289,000	21,626,000
Operating expenses:
Selling expense	9,337,000	6,400,000
General and administrative expense (including $0.6 million associated with variable interest entity for both the three months ended March 31, 2022 and 2021)	15,461,000	11,455,000
Total operating expenses	24,798,000	17,855,000
Operating income	9,491,000	3,771,000
Other income (expense)
Rental income (including $0.2 million associated with variable interest entity for both the three months ended March 31, 2022 and 2021)	238,000	246,000
Other (expense) income	(82,000)	106,000
Gain (loss) on foreign currency transactions	133,000	(165,000)
Interest income, net (including $0.9 million and $0.8 million associated with variable interest entity for the three months ended March 31, 2022 and 2021, respectively)	840,000	278,000
Total other income	1,129,000	465,000
Income before provision for income taxes	10,620,000	4,236,000
Provision for income taxes	2,677,000	1,186,000
Net income	7,943,000	3,050,000
Net income attributable to noncontrolling interest	1,276,000	1,270,000
Net income attributable to Karat Packaging Inc.	$ 6,667,000	$ 1,780,000
Basic and diluted earnings per share:
Basic (in dollars per share)	$ 0.34	$ 0.12
Diluted (in dollars per share)	$ 0.34	$ 0.12
Weighted average common shares outstanding, basic (in shares)	19,807,584	15,167,000
Weighted average common shares outstanding, diluted (in shares)	19,901,384	15,403,000