CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY (UNAUDITED) - USD ($)	Total	Common Stock	Treasury Stock	Total Stockholders’ Equity attributable to Karat Packaging Inc	Additional Paid-in Capital	Retained Earnings	Noncontrolling Interest
Balance at the beginning of period (in shares) at Dec. 31, 2019		15,190,000	0
Balance at the beginning of period at Dec. 31, 2019	$ 24,054,000	$ 15,000	$ 0	$ 15,741,000	$ 13,981,000	$ 1,745,000	$ 8,313,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	567,000			2,451,000		2,451,000	(1,884,000)
Balance at the end of period (in shares) at Mar. 31, 2020		15,190,000	0
Balance at the end of period at Mar. 31, 2020	24,621,000	$ 15,000	$ 0	18,192,000	13,981,000	4,196,000	6,429,000
Balance at the beginning of period (in shares) at Dec. 31, 2019		15,190,000	0
Balance at the beginning of period at Dec. 31, 2019	24,054,000	$ 15,000	$ 0	15,741,000	13,981,000	1,745,000	8,313,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	10,508,000
Balance at the end of period (in shares) at Jun. 30, 2020		15,190,000	(10,000)
Balance at the end of period at Jun. 30, 2020	33,848,000	$ 15,000	$ (107,000)	27,550,000	13,981,000	13,661,000	6,298,000
Balance at the beginning of period (in shares) at Mar. 31, 2020		15,190,000	0
Balance at the beginning of period at Mar. 31, 2020	24,621,000	$ 15,000	$ 0	18,192,000	13,981,000	4,196,000	6,429,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Treasury stock acquired (in shares)			(10,000)
Treasury stock acquired	(107,000)		$ (107,000)	(107,000)
Cash dividends	(607,000)			(607,000)		(607,000)
Net income (loss)	9,941,000			10,072,000		10,072,000	(131,000)
Balance at the end of period (in shares) at Jun. 30, 2020		15,190,000	(10,000)
Balance at the end of period at Jun. 30, 2020	$ 33,848,000	$ 15,000	$ (107,000)	27,550,000	13,981,000	13,661,000	6,298,000
Balance at the beginning of period (in shares) at Dec. 31, 2020	15,167,000	15,190,000	(23,000)
Balance at the beginning of period at Dec. 31, 2020	$ 39,868,000	$ 15,000	$ (248,000)	32,404,000	13,981,000	18,656,000	7,464,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	3,050,000			1,780,000		1,780,000	1,270,000
Balance at the end of period (in shares) at Mar. 31, 2021		15,190,000	(23,000)
Balance at the end of period at Mar. 31, 2021	$ 42,918,000	$ 15,000	$ (248,000)	34,184,000	13,981,000	20,436,000	8,734,000
Balance at the beginning of period (in shares) at Dec. 31, 2020	15,167,000	15,190,000	(23,000)
Balance at the beginning of period at Dec. 31, 2020	$ 39,868,000	$ 15,000	$ (248,000)	32,404,000	13,981,000	18,656,000	7,464,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	$ 12,388,000
Balance at the end of period (in shares) at Jun. 30, 2021	19,709,500	19,732,500	(23,000)
Balance at the end of period at Jun. 30, 2021	$ 120,088,000	$ 20,000	$ (248,000)	111,599,000	81,808,000	30,019,000	8,489,000
Balance at the beginning of period (in shares) at Mar. 31, 2021		15,190,000	(23,000)
Balance at the beginning of period at Mar. 31, 2021	42,918,000	$ 15,000	$ (248,000)	34,184,000	13,981,000	20,436,000	8,734,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock in connection with our initial public offering, net of issuance costs of $5,088,000 (in shares)		4,542,500
Issuance of common stock in connection with our initial public offering, net of issuance costs of $5,088,000	67,592,000	$ 5,000		67,592,000	67,587,000
Stock-based compensation	240,000			240,000	240,000
Net income (loss)	$ 9,338,000			9,583,000		9,583,000	(245,000)
Balance at the end of period (in shares) at Jun. 30, 2021	19,709,500	19,732,500	(23,000)
Balance at the end of period at Jun. 30, 2021	$ 120,088,000	$ 20,000	$ (248,000)	$ 111,599,000	$ 81,808,000	$ 30,019,000	$ 8,489,000