CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY (UNAUDITED) - USD ($) $ in Thousands	Total	Total Stockholders’ Equity Attributable to Karat Packaging Inc.	Common Stock	Treasury Stock	Additional Paid-in Capital	Retained Earnings	Noncontrolling Interest
Balance at the beginning of period (in shares) at Dec. 31, 2024			20,059,505
Balance at the beginning of period at Dec. 31, 2024	$ 162,199	$ 155,569	$ 20	$ (248)	$ 89,457	$ 66,340	$ 6,630
Treasury stock, balance at the beginning of period (in shares) at Dec. 31, 2024				(23,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividends declared	(9,017)	(9,017)				(9,017)
Stock-based compensation	346	346			346
Global Wells membership interest tax withholding	(132)						(132)
Net income	6,815	6,409				6,409	406
Balance at the end of period (in shares) at Mar. 31, 2025			20,059,505
Balance at the end of period at Mar. 31, 2025	160,211	153,307	$ 20	$ (248)	89,803	63,732	6,904
Treasury stock, balance at the end of period (in shares) at Mar. 31, 2025				(23,000)
Balance at the beginning of period (in shares) at Dec. 31, 2024			20,059,505
Balance at the beginning of period at Dec. 31, 2024	$ 162,199	155,569	$ 20	$ (248)	89,457	66,340	6,630
Treasury stock, balance at the beginning of period (in shares) at Dec. 31, 2024				(23,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Repurchases of common stock, including excise tax (in shares)	0
Net income	$ 25,470
Balance at the end of period (in shares) at Sep. 30, 2025			20,120,505
Balance at the end of period at Sep. 30, 2025	161,586	154,481	$ 20	$ (248)	90,800	63,909	7,105
Treasury stock, balance at the end of period (in shares) at Sep. 30, 2025				(23,000)
Balance at the beginning of period (in shares) at Mar. 31, 2025			20,059,505
Balance at the beginning of period at Mar. 31, 2025	160,211	153,307	$ 20	$ (248)	89,803	63,732	6,904
Treasury stock, balance at the beginning of period (in shares) at Mar. 31, 2025				(23,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividends declared	(9,031)	(9,031)				(9,031)
Issuance of common stock upon vesting of restricted stock units (in shares)			35,800
Stock-based compensation	445	445			445
Exercise of stock options (in shares)			10,350
Exercise of stock options	195	195			195
Global Wells membership interest tax withholding	(166)	(3)				(3)	(163)
Net income	11,052	10,934				10,934	118
Balance at the end of period (in shares) at Jun. 30, 2025			20,105,655
Balance at the end of period at Jun. 30, 2025	162,706	155,847	$ 20	$ (248)	90,443	65,632	6,859
Treasury stock, balance at the end of period (in shares) at Jun. 30, 2025				(23,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividends declared	$ (9,043)	(9,043)				(9,043)
Issuance of common stock upon vesting of restricted stock units (in shares)			9,000
Repurchases of common stock, including excise tax (in shares)	0
Stock-based compensation	$ 253	253			253
Exercise of stock options (in shares)			5,850
Exercise of stock options	104	104			104
Global Wells membership interest tax withholding	(37)	(5)				(5)	(32)
Net income	7,603	7,325				7,325	278
Balance at the end of period (in shares) at Sep. 30, 2025			20,120,505
Balance at the end of period at Sep. 30, 2025	$ 161,586	154,481	$ 20	$ (248)	90,800	63,909	7,105
Treasury stock, balance at the end of period (in shares) at Sep. 30, 2025				(23,000)
Balance at the beginning of period (in shares) at Dec. 31, 2025	19,962,131		20,122,505
Balance at the beginning of period at Dec. 31, 2025	$ 156,870	149,417	$ 20	$ (3,246)	90,939	61,704	7,453
Treasury stock, balance at the beginning of period (in shares) at Dec. 31, 2025	(160,374)			(160,374)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividends declared	$ (8,983)	(8,983)				(8,983)
Stock-based compensation	242	242			242
Exercise of stock options (in shares)			1,600	63,757
Exercise of stock options	30	30			30
Global Wells membership interest tax withholding	(127)						(127)
Net income	7,141	6,741				6,741	400
Balance at the end of period (in shares) at Mar. 31, 2026			20,124,105
Balance at the end of period at Mar. 31, 2026	$ 155,173	147,447	$ 20	$ (3,246)	91,211	59,462	7,726
Treasury stock, balance at the end of period (in shares) at Mar. 31, 2026				(160,374)
Balance at the beginning of period (in shares) at Dec. 31, 2025	19,962,131		20,122,505
Balance at the beginning of period at Dec. 31, 2025	$ 156,870	149,417	$ 20	$ (3,246)	90,939	61,704	7,453
Treasury stock, balance at the beginning of period (in shares) at Dec. 31, 2025	(160,374)			(160,374)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Repurchases of common stock, including excise tax (in shares)	(74,000)
Exercise of stock options (in shares)	65,357
Net income	$ 41,516
Balance at the end of period (in shares) at Sep. 30, 2026	19,995,478		20,156,605
Balance at the end of period at Sep. 30, 2026	$ 171,393	163,244	$ 20	$ (5,238)	93,654	74,808	8,149
Treasury stock, balance at the end of period (in shares) at Sep. 30, 2026	(161,127)			(161,127)
Balance at the beginning of period (in shares) at Mar. 31, 2026			20,124,105
Balance at the beginning of period at Mar. 31, 2026	$ 155,173	147,447	$ 20	$ (3,246)	91,211	59,462	7,726
Treasury stock, balance at the beginning of period (in shares) at Mar. 31, 2026				(160,374)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividends declared	(8,970)	(8,970)				(8,970)
Issuance of common stock upon vesting of restricted stock units (in shares)			32,500
Repurchases of common stock, including excise tax (in shares)				(73,510)
Repurchases of common stock, including excise tax	(2,003)	(2,003)		$ (2,003)
Stock-based compensation	596	596			596
Global Wells membership interest tax withholding	(170)	70				70	(240)
Net income	29,649	29,331				29,331	318
Balance at the end of period (in shares) at Jun. 30, 2026			20,156,605
Balance at the end of period at Jun. 30, 2026	174,275	166,471	$ 20	$ (5,249)	91,807	79,893	7,804
Treasury stock, balance at the end of period (in shares) at Jun. 30, 2026				(233,884)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividends declared	$ (9,395)	(9,395)				(9,395)
Issuance of common stock upon vesting of restricted stock units (in shares)				9,000
Repurchases of common stock, including excise tax (in shares)	0
Repurchases of common stock, including excise tax	$ 11	11		$ 11
Stock-based compensation	655	655			655
Exercise of stock options	1,192	1,192			1,192
Global Wells membership interest tax withholding	(71)	(85)				(85)	14
Net income	$ 4,726	4,395				4,395	331
Balance at the end of period (in shares) at Sep. 30, 2026	19,995,478		20,156,605
Balance at the end of period at Sep. 30, 2026	$ 171,393	$ 163,244	$ 20	$ (5,238)	$ 93,654	$ 74,808	$ 8,149
Treasury stock, balance at the end of period (in shares) at Sep. 30, 2026	(161,127)			(161,127)