Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Earnings Per Share Reconciliation [Abstract]
Net income attributable to Karat Packaging Inc.	$ 9,100	$ 10,502	$ 15,266	$ 19,507
Weighted average number of common shares in issue (in shares)	19,994,250	19,886,585	19,981,928	19,887,023
Basic earnings per share (in dollars per share)	$ 0.46	$ 0.53	$ 0.76	$ 0.98
Weighted Average Number of Shares Outstanding, Diluted [Abstract]
Net income attributable to Karat Packaging Inc.	$ 9,100	$ 10,502	$ 15,266	$ 19,507
Weighted average number of common shares in issue (in shares)	19,994,250	19,886,585	19,981,928	19,887,023
Dilutive shares
Stock options and restricted stock units (in shares)	120,000	67,000	113,000	60,000
Adjusted weighted average number of common shares (in shares)	20,113,842	19,953,510	20,094,664	19,947,155
Diluted earnings per share (in dollars per share)	$ 0.45	$ 0.53	$ 0.76	$ 0.98
Potentially dilutive shares excluded from diluted earnings per share calculation (in shares)	0	420,000	10,000	427,000