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, 2020			15,190,000	23,000
Balance at the beginning of period at Dec. 31, 2020	$ 39,868	$ 32,404	$ 15	$ (248)	$ 13,981	$ 18,656	$ 7,464
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	3,050	1,780				1,780	1,270
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	34,184	$ 15	$ (248)	13,981	20,436	8,734
Balance at the beginning of period (in shares) at Dec. 31, 2021	19,804,417		19,827,417	23,000
Balance at the beginning of period at Dec. 31, 2021	$ 132,025	122,900	$ 20	$ (248)	83,694	39,434	9,125
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)						(387)
Net income	$ 7,943	6,667				6,667	1,276
Balance at the end of period (in shares) at Mar. 31, 2022	19,809,417		19,832,417	23,000
Balance at the end of period at Mar. 31, 2022	$ 140,243	$ 130,229	$ 20	$ (248)	$ 84,356	$ 46,101	$ 10,014