Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Earnings Per Share Reconciliation [Abstract]
Net income attributable to Karat Packaging Inc.	$ 31,478	$ 29,975
Weighted average shares (in shares)	20,057,549	20,002,211
Basic earnings per share (in dollars per share)	$ 1.57	$ 1.50
Weighted Average Number of Shares Outstanding, Diluted [Abstract]
Net income attributable to Karat Packaging Inc.	$ 31,478	$ 29,975
Weighted average shares (in shares)	20,057,549	20,002,211
Dilutive shares
Stock options and restricted stock units (in shares)	122,000	122,000
Total dilutive shares (in shares)	20,180,070	20,124,284
Diluted earnings per share (in dollars per share)	$ 1.56	$ 1.49
Potentially dilutive shares excluded from diluted earnings per share calculation (in shares)	161	4,803