Accumulated Other Comprehensive Income (Loss) and Shareholders' Equity - Schedule of Shares Repurchased and Settled (Details) - USD ($) $ / shares in Units, $ in Thousands, shares in Millions	12 Months Ended
	Dec. 28, 2024	Dec. 30, 2023	Dec. 31, 2022
Accumulated Other Comprehensive Income (Loss) [Line Items]
Purchase of HNI Corporation common stock	$ (65,800)	$ (300)	$ (65,200)
Common Stock
Accumulated Other Comprehensive Income (Loss) [Line Items]
Shares repurchased (in shares)	1.3	0.0	1.7
Average price per share (in dollars per share)	$ 50.86	$ 41.98	$ 38.11
Cash purchase price	$ (66,000)	$ (400)	$ (63,900)
Purchases unsettled as of year end	200	100	0
Prior year purchases settled in current year	(100)	0	(1,300)
Purchase of HNI Corporation common stock	$ (65,800)	$ (300)	$ (65,200)