CONSOLIDATED STATEMENTS OF INCOME - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Income Statement [Abstract]
Net sales	$ 364,244,000	$ 295,518,000
Cost of goods sold	256,417,000	206,393,000
Gross profit	107,827,000	89,125,000
Operating expenses:
Selling expenses	32,261,000	22,186,000
General and administrative expenses (including $2.5 million and $2.0 million associated with variable interest entity for the years ended December 31, 2021 and 2020, respectively)	52,421,000	39,242,000
Total operating expenses	84,682,000	61,428,000
Operating income	23,145,000	27,697,000
Other income (expenses)
Rental income (including $0.9 million and $0.3 million associated with variable interest entity for the years ended December 31, 2021 and 2020, respectively)	931,000	322,000
Other income	259,000	72,000
Loss on foreign currency transactions	(412,000)	(688,000)
Gain on sale of asset	0	16,000
Interest expense, net (including $0.5 million and $2.9 million associated with variable interest entity for the years ended December 31, 2021 and 2020, respectively)	(1,395,000)	(5,492,000)
Gain on forgiveness of debt	5,000,000	0
Total other income (expenses)	4,383,000	(5,770,000)
Income before provision for income taxes	27,528,000	21,927,000
Provision for income taxes	5,089,000	5,259,000
Net income	22,439,000	16,668,000
Net income (loss) attributable to noncontrolling interest	1,661,000	(849,000)
Net income attributable to Karat Packaging Inc.	$ 20,778,000	$ 17,517,000
Basic and diluted earnings per share:
Basic (in dollars per share)	$ 1.13	$ 1.15
Diluted (in dollars per share)	$ 1.12	$ 1.13
Weighted average common shares outstanding, basic (in shares)	18,409,243	15,176,809
Weighted average common shares outstanding, diluted (in shares)	18,566,260	15,447,809