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, 2021			19,827,417
Balance at the beginning of period at Dec. 31, 2021	$ 132,025	$ 122,900	$ 20	$ (248)	$ 83,694	$ 39,434	$ 9,125
Treasury stock, balance at the beginning of period (in shares) at Dec. 31, 2021				(23,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	611	611			611
Exercise of common stock options (in shares)			5,000
Exercise of common stock options	51	51			51
Noncontrolling interest tax withholding	(387)	0					(387)
Net income	7,943	6,667				6,667	1,276
Balance at the end of period (in shares) at Mar. 31, 2022			19,832,417
Balance at the end of period at Mar. 31, 2022	140,243	130,229	$ 20	$ (248)	84,356	46,101	10,014
Treasury stock, balance at the end of period (in shares) at Mar. 31, 2022				(23,000)
Balance at the beginning of period (in shares) at Dec. 31, 2021			19,827,417
Balance at the beginning of period at Dec. 31, 2021	132,025	122,900	$ 20	$ (248)	83,694	39,434	9,125
Treasury stock, balance at the beginning of period (in shares) at Dec. 31, 2021				(23,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	21,296
Balance at the end of period (in shares) at Sep. 30, 2022			19,832,417
Balance at the end of period at Sep. 30, 2022	154,082	143,832	$ 20	$ (248)	85,519	58,541	10,250
Treasury stock, balance at the end of period (in shares) at Sep. 30, 2022				(23,000)
Balance at the beginning of period (in shares) at Mar. 31, 2022			19,832,417
Balance at the beginning of period at Mar. 31, 2022	140,243	130,229	$ 20	$ (248)	84,356	46,101	10,014
Treasury stock, balance at the beginning of period (in shares) at Mar. 31, 2022				(23,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	565	565			565
Noncontrolling interest tax withholding	(487)						(487)
Net income	7,200	6,344				6,344	856
Balance at the end of period (in shares) at Jun. 30, 2022			19,832,417
Balance at the end of period at Jun. 30, 2022	147,521	137,138	$ 20	$ (248)	84,921	52,445	10,383
Treasury stock, balance at the end of period (in shares) at Jun. 30, 2022				(23,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon vesting of‎ restricted stock units, net shares withheld to‎ cover taxes (in shares)			0
Issuance of common stock upon vesting of‎ restricted stock units, net shares withheld to‎ cover taxes	598	598			598
Stock-based compensation	(190)						(190)
Net income	6,153	6,096				6,096	57
Balance at the end of period (in shares) at Sep. 30, 2022			19,832,417
Balance at the end of period at Sep. 30, 2022	$ 154,082	143,832	$ 20	$ (248)	85,519	58,541	10,250
Treasury stock, balance at the end of period (in shares) at Sep. 30, 2022				(23,000)
Balance at the beginning of period (in shares) at Dec. 31, 2022	19,885,005		19,908,005
Balance at the beginning of period at Dec. 31, 2022	$ 151,933	141,682	$ 20	$ (248)	85,792	56,118	10,251
Treasury stock, balance at the beginning of period (in shares) at Dec. 31, 2022	(23,000)			(23,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon vesting of‎ restricted stock units, net shares withheld to‎ cover taxes (in shares)			2,452
Issuance of common stock upon vesting of‎ restricted stock units, net shares withheld to‎ cover taxes	$ (14)	(14)			(14)
Stock-based compensation	277	277			277
Net income	9,186	9,005				9,005	181
Balance at the end of period (in shares) at Mar. 31, 2023			19,910,457
Balance at the end of period at Mar. 31, 2023	$ 161,382	150,950	$ 20	$ (248)	86,055	65,123	10,432
Treasury stock, balance at the end of period (in shares) at Mar. 31, 2023				(23,000)
Balance at the beginning of period (in shares) at Dec. 31, 2022	19,885,005		19,908,005
Balance at the beginning of period at Dec. 31, 2022	$ 151,933	141,682	$ 20	$ (248)	85,792	56,118	10,251
Treasury stock, balance at the beginning of period (in shares) at Dec. 31, 2022	(23,000)			(23,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of common stock options (in shares)	5,800
Net income	$ 29,003
Balance at the end of period (in shares) at Sep. 30, 2023	19,893,839		19,916,839
Balance at the end of period at Sep. 30, 2023	$ 164,753	154,165	$ 20	$ (248)	86,620	67,773	10,588
Treasury stock, balance at the end of period (in shares) at Sep. 30, 2023	(23,000)			(23,000)
Balance at the beginning of period (in shares) at Mar. 31, 2023			19,910,457
Balance at the beginning of period at Mar. 31, 2023	$ 161,382	150,950	$ 20	$ (248)	86,055	65,123	10,432
Treasury stock, balance at the beginning of period (in shares) at Mar. 31, 2023				(23,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividends declared	(6,965)	(6,965)				(6,965)
Issuance of common stock upon vesting of‎ restricted stock units, net shares withheld to‎ cover taxes (in shares)			582
Issuance of common stock upon vesting of‎ restricted stock units, net shares withheld to‎ cover taxes	(4)	(4)			(4)
Stock-based compensation	216	216			216
Net income	10,677	10,502				10,502	175
Balance at the end of period (in shares) at Jun. 30, 2023			19,911,039
Balance at the end of period at Jun. 30, 2023	165,306	154,699	$ 20	$ (248)	86,267	68,660	10,607
Treasury stock, balance at the end of period (in shares) at Jun. 30, 2023				(23,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividends declared	(9,952)	(9,952)				(9,952)
Stock-based compensation	250	250			250
Exercise of common stock options (in shares)			5,800
Exercise of common stock options	103	103			103
Noncontrolling interest tax withholding	(94)						(94)
Net income	$ 9,140	9,065				9,065	75
Balance at the end of period (in shares) at Sep. 30, 2023	19,893,839		19,916,839
Balance at the end of period at Sep. 30, 2023	$ 164,753	$ 154,165	$ 20	$ (248)	$ 86,620	$ 67,773	$ 10,588
Treasury stock, balance at the end of period (in shares) at Sep. 30, 2023	(23,000)			(23,000)