Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Earnings Per Share Reconciliation [Abstract]
Net income attributable to Karat Packaging Inc.	$ 6,741	$ 6,409
Weighted average number of common shares outstanding (in shares)	19,963,224	20,036,505
Basic earnings per share (in dollars per share)	$ 0.34	$ 0.32
Weighted Average Number of Shares Outstanding, Diluted [Abstract]
Net income attributable to Karat Packaging Inc.	$ 6,741	$ 6,409
Weighted average number of common shares outstanding (in shares)	19,963,224	20,036,505
Dilutive shares
Stock options and restricted stock units (in shares)	110,000	162,000
Adjusted weighted average number of common shares (in shares)	20,073,479	20,198,654
Diluted earnings per share (in dollars per share)	$ 0.34	$ 0.32
Potentially dilutive shares excluded from diluted earnings per share calculation (in shares)	18,666	0