CONDENSED CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Income Statement [Abstract]
Net sales	$ 134,742	$ 124,516	$ 387,991	$ 352,126
Cost of goods sold	89,611	81,598	224,174	219,339
Gross profit	45,131	42,918	163,817	132,787
Operating expenses
Selling expenses	18,001	13,798	48,481	41,925
General and administrative expenses (including $670 and $724 associated with variable interest entity for the three months ended September 30, 2026 and 2025, respectively; $1,986 and $2,186 associated with variable interest entity for the nine months ended September 30, 2026 and 2025, respectively)	22,310	20,950	64,390	58,622
(Gain) loss, net, on disposal of property and equipment	(52)	(403)	8	(703)
Total operating expenses	40,259	34,345	112,879	99,844
Operating income	4,872	8,573	50,938	32,943
Other income (expenses)
Rental income (including $364 and $370 associated with variable interest entity for the three months ended September 30, 2026 and 2025, respectively; $1,083 and $1,177 associated with variable interest entity for the nine months ended September 30, 2026 and 2025, respectively)	718	710	2,132	2,241
Other income, net (including $0 associated with variable interest entity for both the three months ended September 30, 2026 and 2025; $76 and $0 associated with variable interest entity for the nine months ended September 30, 2026 and 2025, respectively)	7	67	151	29
Gain (loss) on foreign currency transactions	156	681	327	(1,947)
Interest income (including $3 and $120 associated with variable interest entity for the three months ended September 30, 2026 and 2025, respectively; $8 and $431 associated with variable interest entity for the nine months ended September 30, 2026 and 2025, respectively)	518	415	1,965	1,657
Interest expense (including ($374) and ($505) associated with variable interest entity for the three months ended September 30, 2026 and 2025, respectively; ($1,135) and ($1,514) associated with variable interest entity for the nine months ended September 30, 2026 and 2025, respectively)	(420)	(539)	(1,254)	(1,569)
Total other income, net	979	1,334	3,321	411
Income before provision for income taxes	5,851	9,907	54,259	33,354
Provision for income taxes	1,125	2,304	12,743	7,884
Net income	4,726	7,603	41,516	25,470
Net income attributable to noncontrolling interest	331	278	1,049	802
Net income attributable to Karat Packaging Inc.	$ 4,395	$ 7,325	$ 40,467	$ 24,668
Basic and diluted earnings per share:
Basic (in dollars per share)	$ 0.22	$ 0.36	$ 2.03	$ 1.23
Diluted (in dollars per share)	$ 0.22	$ 0.36	$ 2.01	$ 1.22
Weighted average common shares outstanding, basic (in shares)	19,958,578	20,091,476	19,956,814	20,062,277
Weighted average common shares outstanding, diluted (in shares)	20,198,857	20,201,285	20,126,446	20,197,218